` User Manual 905U-K Wireless I/O For 905U-1,2,3,4, C and G products, refer to separate User Manuals ELPRO Technologies Pty Ltd, 9/12 Billabong Street, Stafford Q 4053, Australia. Tel: +61 7 33528600 Fax: +61 7 33528677 Email: sales@elprotech.com Web: www.elprotech.
905K Radio Telemetry Module User Manual Thank you for your selection of the 905U product. We trust it will give you many years of valuable service. ATTENTION! Incorrect termination of supply wires may cause internal damage and will void warranty. To ensure this product enjoys a long life, double check ALL your connections with the user’s manual before turning the power on. CAUTION: This device should not be operated within 8 inches (20cm) of people, in accordance with CFR 47 Section 1.
User Manual FCC Notice: 905U-K Wireless I/O Module This Users Manual is for the ELPRO 905U-K wireless I/O module. This device complies with Part 15.247 of the FCC Rules. Operation is subject to the following two conditions: 1) This device may not cause harmful interference and 2) This device must accept any interference received, including interference that may cause undesired operation.
905K Radio Telemetry Module User Manual Important Notice ELPRO products are designed to be used in industrial environments, by experienced industrial engineering personnel with adequate knowledge of safety design considerations. ELPRO radio products are used on unprotected license-free radio bands with radio noise and interference.
User Manual Limited Warranty, Disclaimer and Limitation of Remedies ELPRO products are warranted to be free from manufacturing defects for a period of 2 years from the effective date of purchase. The effective date of purchase is decided solely by ELPRO Technologies.
905K Radio Telemetry Module User Manual 905U-K Radio Telemetry Module USER MANUAL 1 OVERVIEW ---------------------------------------------------------------------------------------- 8 1.1 Input Signals .................................................................................................................... 8 1.2 Power Supply ................................................................................................................... 9 1.3 Radio Transmitter ................................
User Manual 4 CONFIGURATION ------------------------------------------------------------------------------ 34 4.1 I/O Mapping ................................................................................................................... 35 4.2 Update Transmission Times .......................................................................................... 36 4.3 Digital Inputs ................................................................................................................. 36 4.
905K Radio Telemetry Module 1 User Manual OVERVIEW Note: Please refer to separate User Manuals for the 905U-1,2,3,4 and -C products. The 905U-K product will be referred to as the “905K” for the rest of this manual to clearly delineate it from the other 905U products. The 905K radio telemetry module is an economical solution for the remote monitoring of process signals. The 905K can connect to digital, pulse or analog signals from process transducers, and transmit these signal values by radio.
User Manual Examples: electricity metering, fluid flow, raingauge, level from a shaft encoder Analog continuously variable signals (0-20mA, 4-20mA, 0-10mA, 0-10V) Examples: measured tank level, measured process temperature Some internal signals may also be transmitted to outputs in the network: • Setpoint Status (digital signal set or reset depending upon the value of the analog signal compared to a high and a low setpoint value configured in the 905K) • Supply Low Voltage (digital signal set when supply v
905K Radio Telemetry Module User Manual configuration software is required and is provided with each order. Configuring a module requires the entering of “input mappings” and setting operating parameters for each input. An “input mapping” links an input signal to an output channel at a remote module (or a “destination address”). An input mapping is entered for each input signal (external and internal) which is used. Mappings may be inverted such that the output is the reverse value of the input.
User Manual 2 OPERATION 2.1 Normal Operation Once configured using the 905K configuration software, the 905K module will normally be in “sleep” mode to conserve power. During sleep mode, the microprocessor controller powers down, and the analog loop supply is turned off. The microprocessor will automatically “wake up” and revert to full operation if a digital/pulse input changes (on to off, or off to on), or every 0.5 seconds to check if a timed update transmission is due to be sent.
905K Radio Telemetry Module User Manual message three times, then paralysis will not stop this. Depending on the type of input signal (digital, pulse or analog), the 905K must determine what type of signal change is required to send a transmission: 2.4 Inputs 2.4.1 Digital Inputs A digital input can be an external digital input or an internal status input (setpoint status or low voltage alarm).
User Manual transmitted for the update time. If an update time of zero is selected, then no update messages will be sent. The maximum pulse input is: 300Hz for contact or NPN inputs (1 msec minimum on-time and off-time), or 10KHz (30 µsec minimum on-time and off-time) for TTL inputs. Up to 50KHz can be achieved on PI2 provided the divider is set such that the scaled count rate is less than 10KHz (see below). There is no minimum pulse rate.
905K Radio Telemetry Module User Manual • After each transmission, another transmission for that input is disabled for the paralysis time (0 – 127.5 sec). • PI2 can be scaled by a configurable divider. The diagnostics functions of the 905K allow the user to manually set the counter values to any value (refer section 5 of this manual). On initial start-up of the modules, the counter values will be zeroed.
User Manual below. 2.4.5 Analog Inputs The analog input can measure from 0 – 24mA or 0 – 10VDC. Current or voltage input can be selected by an internal selector (refer Installation section of this manual). The mA input can be used for conventional 4-20mA signals or 0-10mA or 0-20mA. The voltage input can be used for 0-5 or 0-10VDC signals. The 905K unit is factory configured for a 4-20mA signal, however the user can calibrate the unit for other ranges. The measurement resolution is 12 bit.
905K Radio Telemetry Module User Manual When the 905K takes a measurement, it will transmit the analog value if the value has changed by more than the pre-configured sensitivity since the last transmission. The sensitivity can be configured from 0.1% to 75% with a default value of 3%. If the change in the signal since the last transmitted value is less than the sensitivity, then the 905K will not transmit the analog value.
User Manual • Analog value is transmitted if the measured value has increased by the configured sensitivity amount since the last transmission • Analog value is transmitted if the input value has not been transmitted within the update time (10 seconds – 7 days) • There is no paralysis time for the analog input. 2.4.6 Setpoint Status The setpoint status is an internal status value, calculated by comparing the analog input to two configurable setpoint values.
905K Radio Telemetry Module User Manual spare output on the 905U. The unused input can be an internal input such as the Low Voltage status or Setpoint status, or even the analog input as this can also be mapped to a digital output. Configure the 905K so that the digital output at the 905U is normally on - you can configure an input to output mapping to be inverted or direct.
User Manual Probability of successful transmission 100% 90% 80% 70% 60% 50% 40% 30% Transmissions per message 20% 1 10 % 2 0% 0 1000 2000 3000 Messages Per Hour 3 4 5 This assumes that the radio path is reliable and that there is no other radio users on this radio channel. If intermediate repeaters are used, then each repeated message should be counted as another message. We suggest that you use two transmissions per message - with a higher number for a small number of high priority inputs.
905K Radio Telemetry Module Quiescent Each radio transmission Analog input measurement (per measurement) User Manual Voltage Supply ∆ volts (6 – 30) mA BU-5 Battery Pack mAHr 0.14 700 300 180 150 10 3.4 per day 0.005 per transmission 355 / ∆ 0.040 x w-time per measurement.
User Manual No. of “on” update messages per year Total messages for digital input Pulse input Update time = 2 (twice per year) * 16 (4 hours @ 15 min update) = 32 = 4 + 364 + 32 1 day = 400 Sensitivity 50 Average pulse rate is 1 pulse per hour, with peak rate of 20 per hour, for 10 hours, three times per year. No. of change messages (normal rate) = 0 (time for 50 pulses is more than the update time) No.
905K Radio Telemetry Module Expected battery life is User Manual = 1782 mAHr = 1700/1782 = 0.95 year Note that battery life is shortened during configuration or diagnostics. When the serial cable is connected to the 905K, the module does not revert to sleep mode and the power consumption is considerably increased. These periods should be minimised if you are using a battery pack. 2.
User Manual 3 HARDWARE INSTALLATION WARNING! 110/220/240V mains power must NOT be connected to any input terminal of the 905K module! The 905K module is housed in a weatherproof enclosure with external power and input signals connected via a weatherproof connector at the bottom of the module. Wires of up to 0.75 sqmm may be connected by soldering to the female connector supplied with the unit. The antenna/coaxial cable connector is a SMA female at the top of the module.
905K Radio Telemetry Module User Manual 3.1 How to mount the 905K To mount the 905K, remove the four screws in the top plate, and carefully remove the cover. The two mounting holes should now be visible. For Class I Div 2 areas in North America, the 905K must be installed inside another enclosure. It is important to effectively earth the unit to help prevent radio noise and static electricity damage. The preferred method is to earth the module using the mounting screws to connect to an earthed surface.
User Manual referred to as a repeater. This module may also have input/output (I/O) signals connected to it and form part of the I/O network. An antenna must be connected to each 905K module using the SMA connector at the top of the enclosure. It is important to weatherproof this connection by wrapping with waterproofing tape (for example 3M 23 tape).
905K Radio Telemetry Module User Manual 3.2.1 Dipole and Collinear antennas. A collinear antenna transmits the same amount of radio power in all directions - as such that are easy to install and use. The dipole antenna with integral 15 ‘ cable does not require any additional coaxial cable, however a cable must be used with the collinear antennas. Collinear and dipole antennas should be mounted vertically, preferably 1 metre away from a wall or mast to obtain maximum range. 3.2.2 Yagi antenna.
User Manual 3.3 Connection Plug External power and input signals are connected using a 7-pin weatherproof plug, provided with the module. The plug needs to be assembled as per the following diagram. External supply connection is not required when using the BU-5 battery pack.
905K Radio Telemetry Module User Manual PL1-K Plug Lead The PL1-K plug lead assembly is a 1 metre (3’) cable pre-terminated to the connector plug. The connector connections are: Red Supply voltage + Blue DIN1 Green DIN2 Yellow Analog loop supply White AIN + Black AIN – Drain wire with sleeve Common 3.4 Power Supply Installation 3.4.1 External Power The 905K module will accept an external supply of 6 - 30 volts DC. An external supply with a battery and battery charger is suitable.
User Manual 3.4.2 Battery Pack BU-5 The BU-5 can be installed underneath the 905K or beside it. The BU-5 uses the same type of enclosure as the 905K and is mounted in the same way. The BU-5 has a “cable tail” which plugs into the 905K. The input wiring is then connected to a socket on the BU-5. The lid of the BU-5 can be rotated to suit installation. A second BU-5 can be connected to the first in a similar manner. The input wiring for the 905K is then connected to the socket on the second BU-5.
905K Radio Telemetry Module User Manual Operation of the 905K will stop during battery change, however configuration of the module will not be lost when batteries are removed, so no special procedure is required when changing batteries of the same type. Batteries should be inserted as per the drawing - with the BU-5 aligned such that the cable comes out of the top of the module. The BU-5 can be mounted in any direction. The enclosure lid can be rotated.
User Manual ⊂ DIN1 ⊂DIN2 905U-K NPN ⊂ GND Inputs can be voltage free contact or open-collector transistor Inputs do not have any surge protection. If the sensor or switch is mounted a long way from the 905K module, external isolation such as a relay may be required for surge protection. 3.5.2 Shaft Encoder Connections DIN1 DIN1 ⊂ COUNT DIN2 ⊂ DIRECTION PHASE 1 905U-K PHASE 2 DIN2 ⊂ 905U-K GND GND ⊂ ⊂ INCREMENTAL SHAFT ENCODER 3.5.
905K Radio Telemetry Module User Manual Voltage Input Voltage inputs are connected to the AI+ and AI- connections. The maximum voltage signal that can be measured is 10V. The analog signal is set up for a 4-20mA signal in the factory. To use a voltage input, change the jumpers (old version) or slide switch (new version) inside the module: 1. Remove the lid from the unit. 2.
User Manual 3.5.4 RS232 serial port An RS232 port is provided for connection of a PC for configuration and diagnostics. To access the serial port DB9 connector, remove the front cover from the module by unscrewing the four screws in the front panel. The serial port is a 9 pin DB9 male and provides for connection to a terminal or to a PC for configuration, field testing and for factory testing. Communication is via standard RS-232 signals.
905K Radio Telemetry Module 4 User Manual CONFIGURATION The 905K module is configured by creating a configuration file on a PC and downloading to the 905K via the RS232 serial port. You will require the configuration software, and a serial cable refer to the previous section for details on the cable. The configuration software is supplied as "free-ware" on the Product Catalog CD supplied with each order. The configuration software for the 905K is the same as the software for the 905U.
User Manual 4.1 I/O Mapping Enter I/O mappings as per the 905U manual. In the following example, a digital input at a 905K is mapped to DO1 of 905U#3. The analog input of the 905K is mapped to AO2 of the same module. DIN1 DO1 (DIN1 from #14) 905K 905U-1 AIN #3 AO2 (AIN from #14) #14 DO3 (SP inv from #14) #4 905U-1 AO1 (AIN from #14) The setpoint status of the 905K is mapped (inverted) to DO3 of 905U#4, using 905U#3 as a repeater. The 905K AI is also mapped to AO1 of this module.
905K Radio Telemetry Module User Manual 4.2 Update Transmission Times Each input signal has an update time. If a change has not occurred for this input within this time, then a transmission is set for this input after the update time has expired. Each input signal has its own timer - when a transmission occurs for this input (either a change transmission or an update transmission) the timer is reset to zero. If the timer reaches the Update Time value, then a update transmission occurs.
User Manual time - this is to prevent overcrowding of the radio channel. An example could be a system monitoring environmental alarms. Normally there would be few change messages, but under abnormal conditions, a lot of change messages could be generated in a short time period. The paralysis time will allow each module to send the first change message, but subsequent change messages are disabled during the paralysis time.
905K Radio Telemetry Module User Manual Consider the above example, with 905K #14. This module is mounted on a water tank, and the analog input is a level transducer. The 905K is powered by a BU-5 battery pack and to conserve power, a measurement is taken every 30 minutes (1800 sec). The transducer requires a warm-up time of 7 seconds to achieve accuracy, so a value of 10 seconds is chosen.
User Manual The supply voltage also has user-configurable setpoints to determine the Supply Low Volts alarm. These setpoints can be set from the SetPoint option. The 905K module will shut-down when the supply voltage reaches 90% of the “low volts” value. We recommend the following setpoint values: Battery Type Low Volts Setpoint Shut-down Voltage BU-5 Battery Pack 6.0 5.4 12V “Gell-cell” 11.2 10.0 man_905K_1.10.
905K Radio Telemetry Module User Manual 4.7 Pulse Inputs Each 905K has two pulse inputs. Each pulse input has 2 x 16 bit counters and a calculated pulse rate value. The 2 x 16 bit counters are a base counter which increments on each pulse, and an “HI” counter which increments each time the base counter overflows. Either or both counters can be transmitted, although each is transmitted individually. There are several configurable parameters for pulse inputs.
User Manual Example 1: A turbine meter is connected to a 905K with a pulse signal of 15 pulses per gallon. The normal flow rate is 30 gallons/sec - that is, the normal pulse signal is 450Hz (15x30). The flow signal is connected to PI2, and divider of 15 is selected such that the pulse count is scaled to units of gallons. Both PI2 counters are transmitted to a 905C module for interfacing to a HMI package. The HMI will read both counter values and calculate a 32 bit totalized flow value. man_905K_1.10.
905K Radio Telemetry Module User Manual Example 2: A system of tipping bucket raingauges is installed to monitor rainfall in a catchment area. Each raingauge provides a pulse signal to a 905K - each pulse represents 1/100th inch of rain. The user wants a transmission at each pulse.
User Manual 4.7.2 Shaft Encoder Inputs If the pulse inputs are connected to a shaft encoder (incremental or quadrature types), then the Shaft Encoder Inputs option should be selected. The 905K will then look at both pulse input signals and calculate a “position” value for the shaft encoder. If an incremental encoder is used, then the correct counter value will be stored in the PI1 counter. If a quadrature encoder is used, the value will be stored in the PI2 counter.
905K Radio Telemetry Module User Manual rate to be X Hz, then the analog value will be 100% at X Hz increasing, and 0% value at X Hz decreasing. 4.8 Number of Transmissions This parameter allows you to select the number of transmissions for each message. For example, if 3 is selected, then each message will be transmitted three times. The time between each transmission will be a random time between 0.5 and 4 seconds. The valid choices for this option are 1 - 5. 4.
User Manual 4.10 Loading Configuration from a Module Care should be taken when loading a configuration from a module. It is easy to lose the system address and unit address. We suggest that you first view the system address and unit address you can do this via the “Unit Options” menu. Note these addresses before loading the configuration. When you upload the configuration, the program will check if you want to load the addresses from the module.
905K Radio Telemetry Module 5 User Manual DIAGNOSTICS AND TESTING 5.1 System Problems Most problems relate to incorrect configuration, or radio path problems. Before installing the 905K module, "bench-test" its operation with the receiving 905U module alongside. If the 905K does not work properly in this test, it will not work properly installed. If problems are found, check the configuration.
User Manual 5.3.1 Read Inputs This option provides a display of the measured input signals in the 905K, both internal and external. Digital inputs (internal and external) are displayed as "ON" or "OFF", the pulse input accumulated count values are displayed and the analog input value is displayed in mA or V. The displayed values will only update when you select the “Update” box. Note that the analog input value is only updated when the configured analog sample occurs.
905K Radio Telemetry Module User Manual into the module. 5.3.3 Calibrating Analog Input The 905K will be calibrated for a 4-20mA signal in the factory. You can calibrate for a different input signal. 1. If you are using a voltage signal, first set the internal “jumpers” as per section 3.5.3 2. Select the “AIN Calibration” box on the main display. The “AIN Range Selection” box will display. 3. If you wish to calibrate to 4-20mA, 0-5V or 0-10V, simply select the range on the left side of the box.
User Manual display, then “Clear Calibration” at the “Analog Calibration” display. 5.3.4 Tone Reversals This feature turns the radio transmitter on continuously for radio path testing. A series of 1 and 0 data bits is transmitted. If the 905K is powered from a battery supply, this testing will draw a lot of power. To do radio path testing, refer to the 905U User Manual. 5.3.5 Firmware Version The feature will display the firmware (software) version of the 905K module. man_905K_1.10.
905K Radio Telemetry Module 6 User Manual SPECIFICATIONS General EMC approval FCC Part 15 Radio standards USA FCC Part 15.247 902 – 928 MHz, 1 Watt Canada RSS-210 Housing 160 x 64 x 36mm NEMA 4 (IP66), except for Class I Div 2 areas in North America. I/O & Power Connection Industrial-grade painted aluminium Weatherproof bayonet connector Suitable for 18 gauge (0.
User Manual Radio Transmitter Frequency 902 - 928 Mhz 250 kHz channel spacing Transmit power 1 Watt Expected line-of-sight range 20 Miles + @ 4W EIRP USA/Canada (subject to local conditions) 15 km @ 1W EIRP Australia / New Zealand Range may be extended by using up to 5 intermediate 905U modules as repeaters, Antenna Connector SMA coaxial Serial Ports RS232 Port DB9 female DCE 9600 baud, no parity, 8 data bits, 1 stop bit Digital Inputs 2 inputs Suitable for voltage free contacts NPN trans
905K Radio Telemetry Module Network Configurations User Manual Max. number of 905U-K inputs is >20,000 if 905U-C/G modules are used as receivers.
User Manual 7 WARRANTY We are pleased that you have purchased this product. ELPRO products are warranted to be free from manufacturing defects for a period of 2 years from the effective date of purchase. The effective date of purchase is decided solely by ELPRO Technologies.
