DPMS XPQ Multi-Function Power Meter User Manual 1087-332 POWER INSTRUMENTS
POWER INSTRUMENTS Copyright 2008© V1.0 This manual may not be reproduced in whole or in part by any means, without the expressed written consent of AMETEK. The information contained in this document is believed to be accurate at the time of publication, however, AMETEK assumes no responsibility for any errors which may appear here and reserves the right to make changes without notice. Please ask your local representative for the latest product specifications before ordering.
DPMS XPQ User Manual Please read this manual carefully before installation, operation and maintenance of the DPMS XPQ meter. The following symbols are used in this user’s manual and on the DPMS XPQ meter to alert the danger or to prompt in the operating or setting process. Danger symbol, Failure to observe the information may result in injury or death. Alert symbol, Alert to potential danger. Observe the information after the symbol to avoid possible injury or death.
POWER INSTRUMENTS content Chapter 1 Introduction……………………………………………………………………………6 Purpose..................................………………………………………………………7 Application Area..............................………………………………………………………9 Function......................................………………………..……………………………9 Comparison......................................………………………………………….………10 Chapter 2 Installation……………………………………………………………………………12 Appearance and Dimensions……………………..……………………………………13 Installation Method…………………………………………………….……….….
DPMS XPQ User Manual Getting Started! Congratulations! You have received an advanced, versatile, multifunction power meter, also known as a Remote terminal unit (RTU), which will greatly benefit your power system. When you open the package, you will find the following items. 1. DPMS XPQ meter 1 2. 14-Pin terminal 2 3. Installation clips 4 4. User’s operation manual 1 5.
Chapter 1 Introduction Purpose Application Area Functions DPMS XPQ Series 5
DPMS XPQ User Manual Purpose Powerful Multifunction Power Meter The DPMS XPQ series multifunction power meter is the new generation of the very popular DPMS. It has more functions and higher accuracy.
POWER INSTRUMENTS Remote Power Control The main function of the DPMS XPQ is measurement, but it also has some flexible I/O functions. This makes the meter very useful as a distributed RTU (metering, monitoring, remote controlling in one unit). Power Quality Analysis With the powerful digital signal processing ability, the DPMS XPQ intelligent power meter can be used as an online power quality analysis instrument.
DPMS XPQ User Manual Application Area Power Distribution Automation Intelligent Electric Switch Gear Industry Automation Building Automation Energy Management System Large UPS System Function Multifunction, High Accuracy The DPMS XPQ sSeries multifunction Intelligent power meter is powerful in data collecting and processing.
POWER INSTRUMENTS EEprom, which will maintain its content after the meter is powered off. With the backlight of the LCD, the display can be easily read in a dim environment. The back light “on” time is selectable. Multiple Wiring Modes The DPMS XPQ can easily be used in either: high voltage, low voltage, three phase three wires, three phase four wires or a single phase system. High safety, high stability, the DPMS XPQ was designed according to industrial standards.
DPMS XPQ User Manual Harmonics THD Phases and all phase Voltage harmonic analysis current harmonic analysis Function Sequence phase angle Energy MAX/MIN Voltage eligibility SOE log Alarm log Waveform log Trending log System status Alarm Others 10 D Real time Current month TOU Previous month TOU Accumulative TOU Frozen Real time Current month TOU Accumulative TOU Current Previous Daily, Monthly, Yearly, Frozen, Accumulative ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● E F G ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
Chapter 2 Installation Appearance and Dimensions Installation Method Wiring 11
DPMS XPQ User Manual Note: Before trying to operate the meter, note the functions according to its pattern. The installation method is introduced in this chapter. Please read this chapter carefully before beginning installation work. Appearance and Dimensions 6 3 7 2 8 1 5 4 Fig 2.1 Appearance of the DPMS XPQ PART NAME DESCRIPTION 1. Enclosure The DPMS XPQ enclosures are made of high strength anticombustible engineered plastic 2.
POWER INSTRUMENTS Dimensions Front 43.00 96.00 96.00 Side 38.50 55.00 96.00 Fig 2.2 Dimensions Installation Method Environmental Before installation, please check the environment temperature and humidity to ensure the DPMS XPQ meter is being placed where optimum performance will occur. Temperature Operation: -25 - 70 deg. Storage: -40 - 85 deg.
DPMS XPQ User Manual The meter should be installed in a dry and dust free environment and avoid heat, radiation and high electrical noise sources. Maximum Altitude: 2,000m Site Requirement: Indoor Use Installation Steps Normally, meters are installed on the panel of switch gear. 1. First, cut a square hole on the panel of the switch gear. The cutting size is in fig 2.3 Unit (mm) 0.5 90± 0.0 Cut panel 0.5 90± 0.0 Fig 2.3 Panel Cutting 2.
POWER INSTRUMENTS 3. Finally, install clips back on the meter from the backside and push the clip tightly so that the meter is affixed on the panel. panel Fig 2.5 Use the clips to affix the meter on the panel c a Space required for Installation The space around the meter should be large enough so that the meter removal, terminal strip wiring and wire arrangement could be done easily. The recommended minimum space around the meter is shown in Table 2.2 and Fig 2.6. d Panel f b e g panel Fig 2.
DPMS XPQ User Manual Environment Temperature Minimum Distance(mm) a b c d e ＜50℃ 25 25 38 38 64 ≥50℃ 38 38 51 51 76 f 25 38 g 25 38 Table 2.2 Minimum Space Wiring Terminal Strips There are three terminal strips on the back: Voltage & Current input, Auxiliary and Extend. Only the DPMS XPQ with the PRIO option has the Extend Terminal Strip. The 1, 2 and 3 are used to represent each phase of a three phase system. They have the same meaning with A, B and C or R, S and T in a three phase system.
POWER INSTRUMENTS Extend Terminal Strip Fig 2.7 Terminal Strips DANEROUS Only qualified personnel should do the wire connection work. Make sure the power supply is off and all the wires are powerless. Failure to observe this may result in severe injury or death. Safety Earth Connection Before doing the meter wiring connection, please make sure that the switch gear has a safety Earth system. Connect the meter safety earth terminal to the switch gear safety earth system.
DPMS XPQ User Manual Note 1A FUSE Make sure the power supply voltage is the same as what the meter needs for its auxiliary power. Power Supply Ground 20 L 22 N Acuvim-X 24 G Fig 2.8 Wiring of Power Supply A fuse (typical 1A/250Vac) should be used in the auxiliary power supply loop. No.24 terminal must be connected to the safety earth system of switchgear.
POWER INSTRUMENTS used. A fuse (typical 1A/250Vac) should be used in the voltage input loop. A PT should be used to transform the high voltage into the measurement range of the meter if it is used in a high voltage system. The wire gauge of the input voltage should be AWG16~12 or 1.3~2.0mm2. Note: In no circumstances should the PT secondary be shorted. The PT secondary should be well grounded at one end. Current Input In a practical engineering application, CTs should be installed in the measuring loop.
DPMS XPQ User Manual The voltage and current input wiring mode can be set separately in the meter parameter setting process. The voltage wiring mode could be 3-phase 4-line Wye (3LN), 3-phase 4-line 2PT Wye mode (2LN) and 3-phase 3-line open delta (2LL). The current input wiring mode could be 3CT, 2CT and 1CT. Any voltage mode could be grouped with one of the current modes.
POWER INSTRUMENTS Fig 2.10b 3LN with 3PT 3-Phase 3-Line direct connection mode (3LN) In a 3-Phase 3-Line system, power line A, B and C are connected to V1, V2 and V3 directly. Vn is floated. The voltage input mode of the DPMS XPQ should be set to 3LN. Acuvim-X Fig 2.
DPMS XPQ User Manual 3-Phase 4-Line 2PT mode (2LN) In some 3-Phase 4-Line Wye systems, 2PT Wye mode is often used as in fig 2.12. It is supposed that the 3 phases of the power system are balanced. The voltage of V2 is calculated according to V1 and V3. The voltage input mode of the DPMS XPQ should be set to 2LN for 2PT voltage input wiring mode. Fig 2.12 2LN with 2PTs 3-Phase 3-Line open Delta Mode (2LL) Open delta wiring mode is often used in high voltage systems.
POWER INSTRUMENTS Current Input Wiring 3CT All current input of a three phase system can be viewed as 3CT, whether there are 2 CTs or 3 CTs on the input side. The current input mode of the DPMS XPQ should be set to 3CT for this current input wiring mode. Fig 2.14 3CT-a Fig 2.
DPMS XPQ User Manual 2CT The difference in fig. 2.16 and fig. 2.15 is that there is not current input in the I21 and I22 terminals. The I2 value is calculated from formula i1+i2+i3=0. The current input mode of the DPMS XPQ should be set to 2CT for this current input wiring mode. Fig 2.16 2CT 1CT If it is a three phase balanced system, a 1 CT connection method can be used. The other two currents are calculated according to the balance supposing. Fig 2.
POWER INSTRUMENTS Frequently used wiring method The voltage and current wiring method are put together in one drawing. The DPMS XPQ meter will display normally only if the setting of the meter is associated with the wiring of the voltage and current input. 1. 3LN, 3CT with 3 CTs Fig 2.
DPMS XPQ User Manual 2. 3LN, 3CT with 2 CTs Fig 2.19 3LN, 3CT with 2 CTs 3. 2LN, 2CT Fig 2.
POWER INSTRUMENTS 4. 2LN, 1CT Acuvim-X Fig 2.21 2LN, 1CT Fig 2.21 2LN, 1CT 5. 2LL, 3CT Fig 2.
DPMS XPQ User Manual 6. 2LL, 2CT Fig 2.23 2LL, 2CT 7. 2LL, 1CT 28 Fig 2.
POWER INSTRUMENTS 8. Single Phase 2 Line (Wiring mode setting 3LN, 3CT) Fig 2.25 Single Phase 2 Lines 9. Single Phase 3 Line (Wiring mode setting 3LN, 3CT) Fig 2.
DPMS XPQ User Manual Wiring of Digital Inputs There are two digital inputs of wet contact in the standard DPMS XPQ. The terminals of the two digital inputs are DI1+, DI1- (15, 16) and DI2+, DI2- (17, 18). Additional two digital inputs are optional. The terminals of the two additional digital inputs are DI3+, DI3-(25, 26) and DI4+, DI4-(27, 28). The circuit drawing of the digital input is simplified in fig 2.27. Optical Isolator Acuvim-X fig 2.
POWER INSTRUMENTS Acuvim-X Relay Output (RO) Fig 2.28 Digital Input with Auxiliary Power Fig 2.28 Digital Input with Auxiliary Power There are two additional relay output options for the DPMS XPQ. The terminals are R11, R12 (31, 32) and R21, R22 (33, 34). These two relay outputs are used for remote control electric switches in the power system. The relay type is mechanical Form A contact with 3A/250Vac or 3A/30Vdc. A mediate relay is recommended in the output circuit shown in fig 2.29.
DPMS XPQ User Manual There are two mode selections for relay output, one is latching, and the other is momentary. For the latching mode, the relay can be used to output two states, on or off. For the momentary mode, the output of the relay changes from off to on for a period of time Ton and then goes off. Ton can be set from 503000ms. The wire for relay output should be between AWG22 (0.5mm2)~AWG16 (1.3mm2). Digital Output (DO) There are two digital outputs as an option.
POWER INSTRUMENTS programmed as energy pulse output. For example, DO1 is used as energy pulse output and DO2 is used as reactive energy pulse output. The pulse width and pulse constant can be set. When the digital output is used as an over limit alarm output, the upper and lower limit of the parameter, time interval and output port can be set. A drawing of the alarming output with beeper is in fig 2.31. Photo -Mos Power Supply Acuvim -X Beeper fig 2.31 Do Alarming Circult Fig 2.
DPMS XPQ User Manual overall length of the RS485 cable connecting all devices can not exceed 1200m (4000ft). The DPMS XPQ is used as a slave device of a master like a PC, PLC, data collector or RTU. If the master does not have an RS485 communication port, a converter has to be used. Normally a RS232/RS485 or USB/RS485 is adopted. The topology of RS485 net can be line, circle and star. 1. Line The connection from master to meter is one by one in the RS485 net as in fig 2.32.
POWER INSTRUMENTS 232 /485 Converter Master PC Acuvim-X Acuvim-X Acuvim-X Acuvim-X Acuvim-X Acuvim-X fig 2.31 Circle Mode Fig 2.33 Circle mode 3. Star The connection for RS485 net is in Wye mode. An anti-signal reflecting resistor may be needed in each line. 232/485 Converter Master PC Acuvim-X Acuvim-X Acuvim-X Acuvim-X Acuvim-X Acuvim-X Fig 2.34 Star mode fig 2.
DPMS XPQ User Manual Recommendations for high quality communication: Good quality shielded twisted pair of AWG22 (0.6mm2) or larger is very important. The shield of each segment of the RS485 cable must be connected to the ground at one end only. Keep communication cables as far away as possible from sources of electrical noise. Use an RS232/RS485 or USB/RS485 converter with optical isolated output and surge protection.
Chapter 3 Meter Operation and Parameter Setting Display Panel and Keys Metering Data Reading Statistics Display Meter Parameter Setting Energy Parameter Setting Voltage Eligibility Parameter Setting 37
DPMS XPQ User Manual Detailed human-machine interface of the meter will be described in this chapter. It includes how to get the metering data and how to do the parameter setting. This chapter is based on the DPMS XPQ-G, but other patterns can be operated the same way. Display Panel and Key There is one display panel and four keys in the front of meter. All the display segments are illustrated in fig 3.1. 1 13 3 4 7 5 6 2 1 2 3 4 5 6 7 8 8 12 9 Fig 3.1 All Display Segments 10 11 fig 3.
POWER INSTRUMENTS Table 3.1 Display Panel description SN 1 2 3 4 5 6 7 8 9 10 11 12 13 Display Description Item label letter, MAX, MIN, Demand, PF and F Item label: U: voltage, I: current, P: power, q: reactive power, S: apparent power, PF: power factor, F: frequency, MAX: Maximum value, MIN: Minimum Value, Demand:Demand value, Avg: average value, I with N: neutral current, PF, F, Avg and N indicate the data in the fourth line.
DPMS XPQ User Manual There are four keys on the front panel, labeled as H, P, E and V/A from left to right. Use these four keys to read metering data and set the parameters. Metering Data Reading Normally, it displays the metering data, such as voltage, current, power etc. There are several key patterns: press H, P, E, V/A and press key P and key V/A simultaneously. V/A Three phase Voltage & avg V/A Three phase Current & avg Press V/A to read voltage and current in the metering area.
POWER INSTRUMENTS P Three phase power Press P, to display power related data. The screen will scroll to the next display as you press P each time. It will go back to the first screen if you press P at the last screen.
DPMS XPQ User Manual H THD of phase or line power H THD of line current H Unbalance factor H Voltage Eligibility Press H, to display power quality data, including THD, unbalance factor and voltage eligibility. The screen will scroll to the next display as you press H each time. It will go back to the first screen if you press H at the last screen. The following table shows you how it scrolls: Note 1: Some patterns do not have these functions so the key function and display are invalid.
POWER INSTRUMENTS E Consumption energy E Meter running time Generation energy E E Total energy Time. Format: hh:mm:ss. E E Net energy E The absorption reactive energy E The generation reactive energy E Total reactive energy E Net reactive energy E Consumption energy of sharp time E Consumption energy of peak time Date.
DPMS XPQ User Manual Statistics Display Press the P and V/A keys simultaneously, the Max and Min value of metering data will be displayed on the screen. The time stamp can be accessed through the communication port. P is used to change the display between MAX and MIN, V/A is used to scroll the screen. The screen will scroll to the next display as you press V/A each time. It will go back to the first screen if you press V/A at the last screen. It will exit whenever you press P and V/A Keys simultaneously.
POWER INSTRUMENTS Note The secondary of the PT can not be shorted, otherwise it may cause severe damage to the instrument. Meter Parameter Setting Under the metering data display mode, press the H and V/A key simultaneously, to get into the meter parameter setting mode. Most of the settings can be done through the keys on the panel. In the meter parameter setting mode, press H to move the cursor. Right moves one digit each time. Press P for increasing and press E for decreasing.
DPMS XPQ User Manual P + V/A Access code page V/A 01: Address setting V/A 02: Baud rate setting V/A 03: Voltage input wiring V/A 04: Current input wiring V/A 05: PT primary V/A 06: PT secondary V/A 07: CT primary 01: It is any digit from 1 - 247. 02: 1200, 2400, 4800, 9600, 19200, 38400bps are available. 03: Voltage input could be one of three modes, 3LN, 2LN and 2LL. (Refer to chapter 2) 04: could be one of the three modes, 3CT, 2CT and 1CT. (Refer to chapter 2) 05: PT1 value is an integer from 50.
POWER INSTRUMENTS V/A 08: DO mode setting V/A 09: DO1 output item V/A 10: 09: DO2 output item V/A 11:The DO pulse width V/A 12: Energy pulse rate V/A 13: Relay 1 mode V/A 14: Relay 1 closing time reactive energy and generation of reactive energy respectively. 10: The same as DO1 for setting, and they don’t affect each other. 11: The DO pulse width is an integer from 1 - 50. One digit is 20ms. 12: Pulse rate means the energy value per pulse. It can be an integer of 1 - 6000. One digit is 0.1kWh or 0.
DPMS XPQ User Manual V/A 15: Relay 2 mode V/A 16: Relay 2 closing time V/A 17: Display back light “ on” time V/A 18: MAX Statistic time mode V/A 19: Clearance of the Max and Min value V/A 20: Demand calculation mode V/A 21: Demand period V/A 22: Demand subinterval press any key if it is “off”. 18: 0 and 1 stands for current month and current day respectively.
POWER INSTRUMENTS ON to OFF; “3” stands for trigger at any change. V/A 23: Clearance of peak demand V/A 24: Clearance of peak demand memory V/A 25: DI synchronization triggering demand V/A 26: DI synchronization triggering mode V/A 27: Current I1 direction V/A 28: Current I2 direction V/A 29: Current I3 direction 27, 28, and 29: To adjust polarity of the current, the three currents direction can be set as “Negative” which means reversing 180 degrees and “Positive” which means normal.
DPMS XPQ User Manual V/A 30: Alarming enable V/A 31: Backlight flashing V/A 32: Relay for alarming V/A 33: Alarming records enable V/A 34: Alarming output to DO1 V/A 35: Alarming output to DO2 V/A 36: Alarming output to RO1 V/A 37: Alarming output to RO2 50 output to DO2. On the panel, it is set as decimal but in the register it is binary, so it needs conversion. 36, 37: The same as DO1 and DO2. 38: Two alarm rules can be logically “and” by controlling the logic switch.
POWER INSTRUMENTS V/A 38: Logical and between alarm rules 44: This is the last screen of the setting page. The access code can be changed on this page. It is important to remember the new access code.
DPMS XPQ User Manual Energy Parameter setting Pressing H and E simultaneously under the metering data display mode will enter the energy settings page. The key operation is the same as in other setting pages. You need to press H and E simultaneously to exit this mode.
POWER INSTRUMENTS V/A 07: Freezing at once setting V/A 07: This screen will display only when you select the “at once”. 08: Freezing time setting 08: Set your time of freezing on this screen when you select the “assign” mode. V/A 09: There are two modes of clearance: “assign” means 09: TOU clearance mode selection clear at an assigned time, this will skip the 10th screen to the 11th to set the time. “At once” means clear at once after you finish the 10th screen.
DPMS XPQ User Manual Voltage Eligibility Parameter Setting Pressing H and P simultaneously under the metering data display mode will enter the voltage eligibility statistics setting page. The operation of keys is the same as in other setting pages. You need to press H and P simultaneously to exit this mode. Whether the voltage is eligible or not is according to whether the measured voltage is within the limitations set by the user.
POWER INSTRUMENTS V/A 03: High limit of U2 (U23) 03, 04: when the meter is set to “2LL”, it is U23 and U2 for others. V/A 04: Low limit of U2 (U23) V/A 05: High limit of U3 (U31) V/A 06: Low limit of U3 (U31) V/A 07: Voltage Eligibility clearance mode 05, 06: when the meter is set to “2LL”, it is U31 and U3 for others. 07: There are two modes of clearance: “assign” means clear at an assigned time, this will skip the 8th screen to the 9th to set the time.
DPMS XPQ User Manual V/A 09: Voltage Eligibility clearing date setting V/A 10: Voltage Eligibility clearing time setting V/A 11: Voltage Eligibility freezing mode setting V/A 12: Freezing at once setting V/A 13: Freezing date setting V/A 14: Freezing time setting 56 09, 10: Set the time for the “assign” mode. 11: It only freezes real time measurement. There are two modes. “Assign” means pointing a time to freeze, “at once” means freezing right now.
Chapter 4 Function and Software Functionality and Utility Software 57
DPMS XPQ User Manual The DPMS XPQ can measure almost all the parameters in the power system. Some of its functions may not be demonstrated by simply pressing the keys, hence, the software to go with it. We’ll introduce functions with the help of the software interface in this chapter. The version of the software you buy may be advanced and it may differ somewhere, please refer to the manual that goes with it.
POWER INSTRUMENTS Note1: It should be clear that there is a defined correspondence between the real value and communication value. For more detail, please refer to chapter 5. Note 2: Settings related to measurements are in system settings. Harmonics It can measure and analyze THD, Harmonics (2nd to 31st), even HD, odd HD, Crest Factor, THFF, K factor etc. Values excluding harmonic ratios are shown in the figure below: Fig 4.
DPMS XPQ User Manual A chart in the software is shown below: Phase angle Fig 4.3 Voltage Spectrum Phase angle indicates the angle between U1 and other voltage and current parameters. It ranges from 0 - 360 degrees. This function is to help you find out the relationship between all input signals avoiding incorrect wiring. When it is set to “2LL”, it gives the phase angle of u23, i1, i2, i3 corresponding to u12 and u2, u3, i1, i2, i3 corresponding to u1 for other settings.
POWER INSTRUMENTS Fig 4.4 Phase Angles Current direction adjustment The right current direction is from port 1 to port 2. To adjust polarity of current, the three currents direction can be set as “Negative” which means reversing 180 degrees and “Positive” which means normal. Sequence component and unbalance analysis The DPMS XPQ will do some sequential analysis for the input signal.
DPMS XPQ User Manual Max/Min Fig 4.5 Sequence Component The meter can record statistics of the maximum and minimum values of phase/line voltages, currents, power, reactive power, apparent power, power factor, frequency, demand, unbalance factor, THD as well as the time they occur. The statistic period can be set as “month” or “day”. All the data will be stored in nonvolatile memory so that they will not be lost when the power is off.
POWER INSTRUMENTS The following figure is an example: Demand Fig 4.
DPMS XPQ User Manual power demand, current demand of I1, current demand of I2, current demand of I3, current demand of average current, consumption power predictive demand, generation power predictive demand, absorption reactive power predictive demand, generation reactive power predictive demand, and apparent power predictive demand. The values calculated include last period values, current period values, peak demands and their occurring time.
POWER INSTRUMENTS calculation and the demands update at the end of each period. Synchronization demand When it is set as a fixed window, rolling window or thermal demand, the period can be synchronized via communication port or by changes of DI. DI Synchronization demand Changes to DI can trigger the synchronization of the demand period. The set is as follows. 1. Select a method from fixed window, rolling window or thermal demand. 2.
DPMS XPQ User Manual Here is an example: Fig 4.
POWER INSTRUMENTS Fig 4.8 Demand Setting Energy Various kinds of energy will be accumulated. The settings are explained in other chapters, so please refer to chapter 3 and chapter 5 carefully. Real time energy: the accumulation of energy for the kWh, kVARh and kVAh since cleared last time.
DPMS XPQ User Manual Fig 4.9 Real-Time Energy TOU You can point some different time block to go with different rates (sharp, peak, valley and normal). The meter will calculate the fee according to its inner clock and the settings. So it charges different fees for different rates.
POWER INSTRUMENTS The following is an example: Fig 4.10 Current Month TOU Calculating mode 1. You can select calculating mode from a fundamental base or all-wave base by pressing a key or via communication. Fundamental based calculating is to accumulate energy ignoring harmonics while all-wave based calculating is to accumulate energy including fundamental and harmonics. 2.
DPMS XPQ User Manual Mode 1: S = P 2 + Q 2 + D2 The following figure shows how to set it: Fig 4.11 Energy Setting Freezing This is to backup the accumulated TOU, current TOU, and real time energy at some time point without affecting the existing data. You can use the freeze data for the statistic applications, with all the values recorded at the same time, enhance the accuracy and efficiency. Freezing can be set automatically or manually making the application very flexible.
POWER INSTRUMENTS Fig 4.12 Cumulative TOU TOU calendar: There are four schedules and each schedule has 8 time intervals. Each interval can charge one of the four rates: sharp, peak, valley and normal.
DPMS XPQ User Manual You can adjust the calendar to satisfy different uses. To ensure the validity of the calendar setting, the meter will check its rationality strictly. If there is no mistake in the calendar and the TOU function is enabled, TOU accumulation will begin. Requirement of the time format: 1. Schedules must be selected in turn. For example, if you use two schedules, you should enable the first and then the second. 2. The sum of all schedules must be one year.
POWER INSTRUMENTS Fig 4.13 TOU Schedules Setting Pulse Energy Output The two digital outputs can be used as energy pulse output and cannot be used as the alarming outputs at the same time. The output energy can be selected among all kinds of energy and reactive energy. Pulse constant and pulse width can be set to meet your requirements. Pulse constant is the kWh a pulse stands for, pulse width is the pulse duration. When the accumulated energy reaches the pulse constant, there will be a pulse on DO.
DPMS XPQ User Manual Pulse width ranges from 1 - 50 (integer) with a unit of 20ms. The narrowest interval between two pulses is 20ms. In practice the pulse width and the pulse ratio are selected according to system power. The relation of the two parameters should be satisfied by the following expression, In the expression, the Pmax is the maximum power or reactive power. The unit is kW or kVAR. Recommend pulse ratio is 3 to 5 times the right side value Pulse radio > of the above expression.
POWER INSTRUMENTS Event alarming When the metering data is over the pre-setting limit and over pre-setting time interval, the over limit alarming will be picked up. The over limit value and time will be recorded and the maximum number of records is 16. The digital output (DO) and RO1, RO2 can be used as a trigger to light or sound alarming. Alarming can also trigger waveform capturing.
DPMS XPQ User Manual “Delay time” indicates the time period that the event keeps happening after the setting equation or in equation is satisfied, which is used to confirm the event. Its value ranges from 0 - 6000 (integer) with a unit of 10ms. There is no delay when it is set to be 0, so the event triggers alarming at once. For example, if it is set to be 20, delay is 20*10=200ms. “Waveform triggering” refers to whether waveform capture works when the set event occurs.
POWER INSTRUMENTS 2. Global settings The addresses of all global variables are 101dH~1024H and 103dH in system parameters discussed in chapter 5. “Alarming enable” determines whether the alarming function of this meter works. Only when it is set as “1”, the alarming function enables. When “Alarming flash enable“ is set to “1”, the backlight will flash when an alarm happens. “Alarming records enable setting” determines whether it records.
DPMS XPQ User Manual “Alarming output to RO2” decides which alarm will be output to RO2. It is set the same as RO1. “Alarming output to DO1 setting”: When “Digital output mode” is set to “1”, DO1 can be used as an alarming output. Which alarm will be output to RO2 is set here. You need to do the same as what you do in setting RO1. “Alarming output to DO2 setting”: The same as “Alarming output to DO1 setting”. “Logical and between alarming setting”: The 16 alarming records are divided into 8 groups.
POWER INSTRUMENTS no output. The CT primary value of I1 is 200A. The primary voltage of U1 is 10000V, PT2 is 100V. Then let’s look how all the related registers are set. The first record: According to the table, the serial number of I1 is 9 ((14d8H)= 9); Conditions in equation 1 determine the high limit. So “comparison mode” (14d9H) = 1(>). CT1 is 200A, according to the relationship between the communication value and numerical value. I=Rx X(CT1/5)/1000, so I1 is 180A.
DPMS XPQ User Manual Fig 4.15 Alarm Setting Event alarming setting There are 16 of records to be stored. But they are not corresponding to setting records, they record in cycle. The latest event will cover the oldest one. It begins from the 1st record when the power is turned on. When over range parameters resume to normal, the time and value will be recorded as an event as well. So you can work out the continuous time of over range by checking the changing time. Here is the 1st record.
POWER INSTRUMENTS address 1540H 1541H 1542H 1543H~1549H parameter First group: alarming status First group: parameter number First group: over range or reset value First group: occur time: yyyy mm:dd:hh: mm:ss:ms range 0~65536 0~246 Related with parameters time Table 4-3 alarming status of the 1st record “alarming status” indicates information of the current status. It is a 16-bit unsigned integer. Serial number is stored in the high 8 bits. Bit1 indicates logical and. Bit1=1,yes; Bit1=0,no.
DPMS XPQ User Manual Fig 4.16 Alarm Log SOE Function There are 4 DI inputs, it can record changing information of DIs. The time resolution is 1ms. It can also determine whether to enable waveform capture and which kind of triggering by setting “DI triggering waveform capture mode” in system parameters. Its register forms a 16-bit unsigned integer. Bit1,bit0=DI1; Bit3,bit2=DI2;Bit5,bit4=DI3; Bit7,bit6=DI4.
POWER INSTRUMENTS on and it works in a cycle. The data won’t lose during power off SOE will set bit0 of “system status” to be 1. At the same time, corresponding flags will be set to 1 to indicate new data. The meter sets flag of SOE but does not clear it. It should be cleared after controller has read the data, then bit0 of system parameters will be set to 0. Here is an example: Fig 4.
DPMS XPQ User Manual Waveform record The DPMS XPQ can record 5 cycles of waveforms both before and after the trigger point of the entire 6 input channels (U1, U2, U3, I1, I2 and I3). There are 16 points for each cycle and a maximum of 5 waveform records. There are three reasons for waveform triggering: DI changes, alarming and manual triggering. Please refer to related chapters for more details. Format: w1~w7 recording time (w1:yyyy; w2:mm; w3:dd; w4:hh; w5:mm; w6:ss; w7:ms).
POWER INSTRUMENTS Here is an example: Fig 4.18 Waveform Log Trending records The DPMS XPQ-G takes records of frequency, UA (or UAB), IA, UB (or UBC), IB, UC(or UCA), IC at a fixed interval. So the controller can draw trending charts easily. The time interval can be 1~60 minutes, with the default of 60. It can take 336 records in all and recurs after it is full. It takes the occurring time of the latest record and there are no time stamps for other records.
DPMS XPQ User Manual not be changed. “Trending record backup pointer” is used by the controller, it stores the serial number that the controller will read, it can not be changed by the meter either. It is used to compare “trending record pointer” with input data from the controller, when the two are equal, bit4 of “system status” will be cleared ensuring all data has been read by the controller. Bit4 of “system status” will be set to 1 when there is a new record.
POWER INSTRUMENTS Voltage Eligibility The DPMS XPQ-G can take the statistics of voltage eligibility, then give out a great amount of data. Eligibility = (1-overlimit time/Measuring time)*100% The upper and lower limits of voltage can be set according to the user. When voltage is out of range, it is not eligible. Three limitations of voltages of the phase or line can be set respectively. The format of the setting value and communication value is the same. They are all set according to input voltages.
DPMS XPQ User Manual Fig 4.
Chapter 5 Communication Introducing Modbus Protocol Format of Communication Data Address Table Application Details 89
DPMS XPQ User Manual This chapter mainly discusses how to handle the meter via the communication port using software. To master this chapter, you should be familiar with Modbus and have read the other chapters in this manual. Once you have completed these steps you will have mastered the function and application of this product. This chapter includes: Modbus protocol, the format of communication and data address tables and application details.
POWER INSTRUMENTS Framing Address 8-Bits Function 8-Bits Data N×8-Bits Check 16-Bits Table5.1 Data Frame Format Address Field The address field of a message frame contains eight bits. Valid slave device addresses are 0~247 decimal. A master addresses a slave by placing the slave address in the address field of the message. When the slave sends its response, it places its own address in this address field of the response to let the master know which slave is responding.
DPMS XPQ User Manual register addresses, the quantity of items to be handled, and the count of actual data bytes in the field. For example, if the master requests a slave to read a group of holding registers (function code 03), the data field specifies the starting register and how many registers are to be read.
POWER INSTRUMENTS the CRC. Start and stop bits, and the parity bit, do not apply to the CRC. During generation of the CRC, each 8-bit character is exclusive ORed with the register contents. Then the result is shifted in the direction of the least significant bit (LSB), with a zero filled into the most significant bit (MSB) position. The LSB is extracted and examined. If the LSB was a 1, the register is then exclusive ORed with a preset, fixed value. If the LSB was a 0, no exclusive OR takes place.
DPMS XPQ User Manual CRC16 Hi: CRC high byte CRC16 Lo: CRC low byte 1. Read Status of Relay (Function Code 01) This function code is used to read status. 1=On, 0=Off; There are 2 Relays. The Address of each Relay is Relay1=0000H and Relay2=0001H. The following query is to read Relay Status of meter number 17. Query Addr Fun 11H relay start relay start relay #of reg hi reg lo regs hi 01H 00H 00H 00H relay #of regs lo 02H CRC 16 CRC 16 Hi Lo BFH 5BH Table 5.
POWER INSTRUMENTS 2. Read the Status of DI (Function Code 02) 1=On, 0=Off. There are 4 DIs. The Address of each DI is DI1=0000H, DI2=0001H, DI3=0002H and DI4=0003H. The following query is to read the 4 DI Status of Number 17 DPMS XPQ. Query Addr Fun 11H 02H DI start addr hi 00H DI start addr lo 00H DI num hi 00H DI num lo 04H CRC 16 Hi 7BH CRC 16 Lo 59H Table 5.
DPMS XPQ User Manual 3. Read Data (Function Code 03) Query This function allows the master to obtain the measurement results of the meter.Table 5.8 is an example to read the 3 measured data (F, V1 and V2) from slave device number 17, the data address of F is 0130H, V1 is 0131H and V2 is 0132H. Addr Fun 11H 03H Response Data start Data start Data #of regs hi addr lo addr hi 01H 30H 00H Data #of regs lo 03H CRC 16 regs Hi 06H CRC 16 regs Lo A8H Table 5.
POWER INSTRUMENTS The example below is a request to meter number 17 to turn on Relay1. Addr Fun 11H 05H DO addr hi 00H DO addr lo 00H Value hi FFH Value lo 00H CRC 16 Hi 8EH CRC 16 Lo AAH Table5.10 Control Relay Query Message Response The normal response to the command request is to retransmit the message as received after the relay status has been altered. Addr Fun 11H 05H Relay addr Relay addr Value hi lo hi 00H 00H FFH Value lo 00H CRC Hi 8EH CRC Lo AAH Table5.
DPMS XPQ User Manual Response The normal response to a preset Multi-Register request includes the meter's address, function code, data start register, the number of registers, and error checking. Addr fun 11H 10H Data start Data start addr lo addr hi 01H 56H Data Data register hi register lo 00H 02H CRC high CRC low A2H B4H Table5.13 Preset Multi-Registers Response Message Data Address Table and Application Details There are several rules to follow in using the meter: 1.
POWER INSTRUMENTS parameters relationship System parameters Numerical value equals to communication value Run time T=Rx/100 Clock Numerical value equals to communication value Energy Ep=Rx/10 Reactive energy Eq=Rx/10 Apparent energy Es=Rx/10 Voltage U=Rx X (PT1 / PT2) /10 Current demand I=Rx X(CT1/5) /1000 Power demand P=Rx X (PT1 / PT2) X (CT1/5) Reactive power Q=Rx X (PT1 / PT2) X(CT1/5) demand Apparent power S=Rx X (PT1 / PT2) X (CT1/5) demand unit No unit Format code F1 Hour Unit of time F2 F3 kWh
DPMS XPQ User Manual System Parameter Setting System parameters determine how the meter works. You should understand it clearly by referring to chapters 3 and 4. Function code: 03H for Reading, 10H for Presetting, data type: word. Format code: F1.
POWER INSTRUMENTS 1011H 1012H 1013H Relay2 Pulse Width LCD Back light Time Demand Slid Window Time 200 1 15 1014H Max/Min Clean oah 1015H 1016H 1017H 1018H Max/min statistics time Clear demand memory Clear demand peak Demand calculating mode 0 1 1 1 1019H 101AH Demand secondary period Current I1 direction 5 0 101BH Current I2 direction 0 101CH Current I3 direction 0 101DH 101EH Alarming enable Use of relay 0 0 101FH 1020H 1021H 1022H 1023H Alarming records enable Alarming output to DO
DPMS XPQ User Manual 1028H 1029H 102AH 102BH 15 Only1 works Only 1 works Only 1 works 1: assigned time 0: end of month 1~31 0 0~23 0 0~59 0 0~59 1030H TOU monthly accounting time : minute TOU monthly accounting time : second Energy freezing mode 0 1031H 1032H 1033H 1034H 1035H Freezing at once Freezing time : hour Freezing time : minute Freezing time : second TOU energy clear mode 1 0 0 0 0 1036H 1037H 1038H 1039H 103AH 103BH TOU energy clear at once TOU clear time : month TOU clear time :
POWER INSTRUMENTS 103FH 1040H 1041H Apparent power measuring mode DI triggering demand synchronization enable DI triggering condition 1 0,1 0 0~4 1 1~3 To know more about these parameters, please refer to chapters 3 and 4. System Status Parameter “System status” indicates what events happened in the meter, what kinds of flags are read by the user and to be the index of the storage of the events. Flags should be clear after being read by the controller, otherwise new data will not store properly.
DPMS XPQ User Manual Read-only Record Pointer and its Status “Pointer” is the index number of the addresses of coming-up records.” 0”stands for the first group of records,”1” stands for the second group of records and so on. The data type is “word”. The pointer and its status are produced by the meter, the controller can only read them but not change them.
POWER INSTRUMENTS Date and Time Table Function code: 03 for Reading, 16 for Presetting. Address 1080H 1081H 1082H 1083H 1084H 1085H Parameter Year Month Day Hour minute second Range 2000~2099 1~12 1~31 0~23 0~59 0~59 Format code F3 F3 F3 F3 F3 F3 Energy Measurement All the addresses of energy registers are here. There are lots of registers including calendar setting, real time energy, energy freezing, current month TOU and last month TOU registers. Their relationship is shown below: Statistics: 1.
DPMS XPQ User Manual Start time of first schedule: mm:dd:hh:mm:ss End time of first schedule: mm:dd:hh:mm:ss Time F3 Time F3 1091H 1092H~1094H 1095H~1097H 1098H First interval enable or not Start time of first interval: hh:mm:ss End time of first interval: hh:mm:ss Fee type of first interval 1099H~10A0H 10A1H~10A0H 10A9H~10A8H 10B1H~10B0H 10B9H~10B8H 10C1H~10C0H 10C9H~10C8H 10D1H~10D0H 111CH~1166H 1167H~11B1H The second interval The third interval The fourth interval The fifth interval The sixth in
POWER INSTRUMENTS 11B4H~11C3H In series, they are generation energy, 0~99999999.9 inductive energy, capacitive energy, absolute sum of imp and exp energy, algebraic sum of imp and exp energy, absolute sum of the reactive energy, algebraic sum of reactive energy, Apparent energy. F4 F5 F6 Energy Freezing Energy freezing is to copy real time energy, current month TOU energy, andaccumulating TOU energy without affecting any existing data and record the freezing time as well.
DPMS XPQ User Manual energy(valley), Phase B inductive energy(valley), Phase B consumption energy(normal), Phase B generation energy(normal), Phase B inductive energy(normal), Phase C consumption energy(sharp), Phase C generation energy(sharp), Phase C inductive energy(sharp), Phase C capacitive energy(sharp), Phase C consumption energy(peak), Phase C generation energy(peak), Phase C inductive energy(peak), Phase C consumption energy(valley), Phase C generation energy(valley), Phase C inductive energy(vall
POWER INSTRUMENTS TOU of Current Month TOU of current month is stored here. It refreshes every second and clears at the balance time. Function code: 03H for Reading, 10H for writing.
DPMS XPQ User Manual Alarming Records There are 16 groups of records with the same format. Function code: 03H for Reading, 10H for writing. Please refer to chapter 4 for more details.
POWER INSTRUMENTS Function code: 03H for Reading, 10H for writing. Please refer to chapter 4 for more details.
DPMS XPQ User Manual Voltage Eligibility Function code: 03H for Reading, 10H for writing, data type: word.
POWER INSTRUMENTS 32D6H,32D7H Day: eligible time of three phase 32D8H~32E1H month: same as day 32E2H~32EBH Year: same as day 32ECH~32F5H Accumulation: same as day The following are statistics of Voltage Eligibility 32F6H,32F7H Day: eligibility of UA(UAB) 32F8H,32F9H Day: eligibility of UB(UBC) 32FAH,32FBH Day: eligibility of UC(UCA) 32FCH,32FDH Day: eligibility of three phase 32FEH~3305H month: same as day 3306H~330DH Year: same as day 330EH~3314H Accumulation: same as day 0.0~3.402823E +38 F24 0.0~3.
DPMS XPQ User Manual 3372H~337BH Year: same as day The following are statistics of Voltage Eligibility 337CH,337DH Day: eligibility of UA(UAB) 337EH,337FH Day: eligibility of UB(UBC) 3380H,3381H Day: eligibility of UC(UCA) 3382H,3383H Day: eligibility of three phase 3384H~338BH month: same as day 338CH~3393H Year: same as day 0.0~3.
POWER INSTRUMENTS Address 4000H,4001H 4002H,4003H 4004H,4005H 4006H,4007H 4008H,4009H 400aH,400bH 400cH,400dH 400eH,400fH 4010H,4011H Parameter Frequency Phase voltage Phase voltage Phase voltage Average voltage Line voltage Line voltage Line voltage Average line voltage Relationship F=Rx / 100 V1 U=Rx X (PT1 / PT2) V2 U=Rx X (PT1 / PT2) V3 U=Rx X (PT1 / PT2) Vvavg U=Rx X (PT1 / PT2) V12 U=Rx X (PT1 / PT2) V23 U=Rx X (PT1 / PT2) V31 U=Rx X (PT1 / PT2) Vlavg U=Rx X (PT1 / PT2) 4012H,4013H 4014H,4015H 401
DPMS XPQ User Manual 402cH,402dH 402eH,402fH 4030H,4031H 4032H,4033H 4034H,4035H 4036H,4037H 4038H,4039H 403aH,403bH 403cH,403dH 403eH,403fH 4040H,4041H Phase A Apparent power Sa Phase B Apparent power Sb Phase C Apparent power Sc System Apparent power Sa Phase A power factor PFa Phase B power factor PFb Phase C power factor PFc System power factor PFsum Voltage unbalance factor U_unbl Current unbalance factor I_unbl Load characteristic(R/L/ C) S=Rx X (PT1 / PT2) X (CT1/5) S=Rx X (PT1 / PT2) X (CT1/5) S=
POWER INSTRUMENTS 4043H THD_V1 of V2(V23) 0~10000 F15 4044H THD_V1 of V3(V31) 0~10000 F15 4045H THD_V 0~10000 F15 4046H THD_I1 0~10000 F15 4047H THD_I2 0~10000 F15 4048H THD_I3 0~10000 F15 4049H THD_I 0~10000 F15 Voltage Harmonics, evenHD, oddHD, Crest Factor, TIF, K factor are shown as below 404aH~4067H Harmonics of V1(V12) (the 2nd to 31st) 0~10000 F16 4068H evenHD of V1(V12) 0~10000 F17 4069H OddHD of V1(V12) 0~10000 F18 406aH Crest Factor of V1(V12) 0~65535 F19 406bH TIF of V1(V12) 0~10000 F21 406cH~40
DPMS XPQ User Manual 4124H 4125H 4126H 4127H~412cH 412dH~4135H 4136H~413eH 413fH~4147H 4148H~4150H 4151H~4159H 415Ah~4162H 4163H~416bH 416Ch~4174H 4175H~417dH 417Eh~4186H 4187H~418fH 4190H~4198H 4199H~41a1H 118 0~32767 Last positive power demand of phase A Current positive power demand of 0~32767 phase A 0~32767 Peak positive power demand of phase A time Occur time of Peak positive power demand: yyyy:mm:dd:hh:mm:ss positive power demand of phase B(like positive power demand of A phase ) positive power dem
POWER INSTRUMENTS 41a2H~41aaH Inductive power demand of three phase(like positive power demand of A phase ) 41abH~41b3H capacitive power demand of three phase(like positive power demand of A phase ) 41b4H~41bcH Apparent power demand of three phase(like positive power demand of A phase ) 41bdH~41c5H I1 demand(like positive power demand of A phase ) 41c6H~41ceH I2 demand(like positive power demand of A phase ) 41cfH~41d7H I3 demand(like positive power demand of A phase ) 41d8H~41e0H average current demand(l
DPMS XPQ User Manual MAX/MIN record MAX/MIN and related time. Function code: 03H for Reading.
POWER INSTRUMENTS 4241H MAX of frequency 0~7000 F13 4242H~4247H Occur time: yyyy:mm:dd:hh:mm:ss time F3 4248H MAX of power demand -32768~32767 F9 4249H~424eH Occur time: yyyy:mm:dd:hh:mm:ss time F3 424fH MAX of reactive power demand -32768~32767 F10 4250H~4255H Occur time: yyyy:mm:dd:hh:mm:ss time F3 4256H MAX of apparent power demand 0~65535 F11 4257H~425cH Occur time: yyyy:mm:dd:hh:mm:ss time F3 425dH MAX of voltage unbalance factor 0~65535 F14 425eH~4263H Occur time: yyyy:mm:dd:hh:mm:ss time F3 4264H MA
DPMS XPQ User Manual Sequence Component U1 (U12), I1 consist of real and complex parts. They have positive sequence, negative sequence and zero sequence. Data type is “int”. Function code: 03H for Reading.
POWER INSTRUMENTS 44b8H 44b9H 44baH 44bbH 44bcH phase angle of I3 to V1 phase angle of V23 to V12 phase angle of I1 to V12 phase angle of I2 to V12 phase angle of I3 to V12 0~3600 0~3600 0~3600 0~3600 0~3600 F22 F22 F22 F22 F22 DI Status: Current DI Status, Function code: 02H for Reading.
DPMS XPQ User Manual 124
Appendix Appendix A Technical Data and Specifications Appendix B Ordering Information 125
DPMS XPQ User Manual Appendix A Technical data and specifications Input Ratings Voltage Input Voltage rating Frequency range Overload Voltage range through PT PT burden Measuring Current Input Current rating Current range Overload CT burden Measuring 126 40~230VAC LN, 60~400VAC L-L with 20% over range Category III, Pollution degree 2 45~65Hz 2 times for continue, 2500Vac for 1 Sec (None recurrence) 500KV highest at primary side <0.2VA True RMS 5Amp AC nominal F.S. input with 20% over range.
POWER INSTRUMENTS Accuracy Parameter Voltage1 Current2 Power Reactive Power Apparent Power Power Factor Frequency Energy Reactive Energy THD Unbalance Factor Drift with Temperature Stability Accuracy 0.2% 0.2% 0.5% 0.5% 0.5% 0.5% 0.2% 0.5% 0.5% 1.0% 0.5% Less than 100ppm/℃ 0.5‰/year Note: 1. Accuracy of directly measured voltage: 0.2%, Accuracy of indirectly measured (Calculated) voltage: 0.5% 2. Accuracy of directly measured current: 0.2%, Accuracy of indirectly measured (Calculated) current: 0.
DPMS XPQ User Manual Digital Input (DI) Optical Isolation Isolate voltage Input Type Input resistance Input voltage range Close voltage Max input current DI Aux Power Resolving power of SOE 2500Vac rms Wet contact (Contact with power supply) 2K ohm (typical) 5~30Vdc > 10Vdc 20mA 15Vdc/60mA 1ms Digital Output (DO) Output Form Optical Isolation Max Positive Voltage Max Positive Current Photo-MOS, NO 2500Vac rms 100Vdc 50mA Relay Output (Relay) Output Form Contact Resistance Max Break Voltage Max Break Cu
POWER INSTRUMENTS Suitable Conditions Dimensions (mm) Protection Level Weight (g) Temperature Power Consumption 96x96x72 (Cut -out90x90) IP52 (Front) IP20 ( Cover) 350 -25℃~70℃, Metering -10℃~70℃, Display -40℃~85℃, Storage 0~95% Non-condensing 100-240Vac (±10%,50~60Hz) 100-300Vdc (±10%) 3W Communication Port Type Protocol Baud Rate RS485, Half Duplex, Optical Isolated Modbus RTU 1200~38400bps Humidity Power Supply 129
DPMS XPQ User Manual Appendix B ORDERING INFORMATION DPMS XPQ D-------DPMS XPQ-D E-------DPMS XPQ-E F-------DPMS XPQ-F G------DPMS XPQ-G D: Base unit with metering measurement package and 4 digital inputs, 2 solid-state digital outputs, 2 relay outputs, RS-485 Comm port w/Modbus. E: Base unit with PQ trending package (min/max), 4 digital inputs, 2 solid-state digital outputs, 2 relay outputs, RS-485 Comm port w/ Modbus.
Experience the Power AMETEK Power Instruments 255 North Union Street, Rochester NY, 14605 U.S.A. 585-263-7700 Tel. 585-454-7805 Fax power.sales@ametek.com www.ametekpower.
