937CU-AIHLP-DC1 Installation Instructions HART Loop Converter
Bul. 937C HART Loop Converter Installation Instructions Symbols Used Danger! This symbol indicates an imminent danger. Non-observance will result in personal injury or death. Warning Warning This symbol warns of possible danger. Failure to heed this warning may result in personal injury or death, or property damage, including destruction. Warning! This symbol indicates a possible fault or danger. Non-observance may cause personal injury or serious property damage.
Bul. 937C HART Loop Converter Installation Instructions Safety Notes The HART Loop Converter must only be operated by trained personnel in accordance with this handbook. Attention Warning Attention Attention The protection of operating personnel and of the system is only ensured if the devices are used in accordance with their intended purpose. Any other type of operation than that described in this manual places the safety and functionality of the devices and systems connected to them in question.
Bul. 937C HART Loop Converter Installation Instructions Reference to further documentation Laws, standards, or directives applicable to the intended use must be observed. In relation to hazardous areas, Directive 1999/92/EC must be observed. The corresponding data sheets, declarations of conformity, EC-type-examination certificates, certificates and Control Drawings if applicable (see data sheet) are an integral part of this document. You can find this information under www.ab.com.
Bul. 937C HART Loop Converter Installation Instructions Improper Use Protection of the operating personnel and the overall system is not ensured if the product is not being used according to its intended purpose. The equipment is not suitable for isolating signals in high current applications unless this is noted separately in the corresponding datasheet.
Bul. 937C HART Loop Converter Installation Instructions The respective peak values of the field device and the associated apparatus with regard to explosion protection should be considered when connecting intrinsically safe field devices with intrinsically safe circuits of associated apparatus (verification of intrinsic safety). Make sure to observe IEC/EN 60079-14 and IEC/EN 60079-25.
Bul. 937C HART Loop Converter Installation Instructions Product Specifications Function The HART Loop Converter is an isolated barrier suitable for intrinsically safe applications The device supplies field devices and can be connected in parallel to existing HART circuits. The device analyzes up to four HART variables (PV, SV, TV, QV). Three HART variables can be transformed into varying current signals from these four HART variables.
Product Specifications Bul.
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Product Specifications Bul. 937C HART Loop Converter Installation Instructions Dimensions Housing 119 mm (4.7'') 58 mm (2.28'') 46 mm (1.82'') 115 mm (4.5'') 104 mm (4.1'') 40 mm (1.6") Number of terminal blocks max. 10 Dimension drawing with screw terminals When using screw terminals with test sockets the device is 124 mm (4.9 in) in height. When using spring terminals the device is 131 mm (5.16 in) in height.
Bul. 937C HART Loop Converter Installation Instructions Installation DIN Mounting Rail The devices are mounted on a 35 mm DIN mounting rail according to EN 60715. Example: DIN mounting rail(35 mm x 15 mm) Power Rail To reduce wiring and installation costs, Power Rail is the optimum solution. The Power Rail is a DIN mounting rail with plastic insert, that delivers power to the devices (24 V DC) and transfers bus signals and a collective error message.
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Bul. 937C HART Loop Converter Installation Instructions Mounting Mounting the Isolated Barrier Snap the device onto the DIN mounting rail in a vertical downward movement. See figure below. CORRECT: Device snapped on vertically. INCORRECT: Device snapped on from the side. Can damage the contacts and cause the device to fail. Mounting the Terminal Blocks The insulation of the removable terminal blocks protect against direct contact. If you replace the terminal blocks, observe the rated insulation voltage.
Bul. 937C HART Loop Converter Installation Instructions Connection The removable terminal blocks simplify connection and control cabinet construction significantly. These terminal blocks offer adequate space for the connection of leads with core cross-sections of up to 2.5 mm² (14 AWG). The terminal blocks are coded with red coding pins so misconnection of terminal blocks are eliminated. Input Connection (field circuit) Connecting the Field Circuit 1. 2. Connect the field circuit to the blue terminals.
Bul. 937C HART Loop Converter Installation Instructions + - mA HART + - HART + HART 1+ 2+ - 34 5 6 Zone 0, 1, 2 Div.
Bul. 937C HART Loop Converter Installation Instructions Connection The following connections are available: Connecting the Drive Circuit 1. Connect the drive circuit to the green terminals. 2. Note the tightening torque of the terminal screws. The tightening torque is 0.5 Nm...0.6 Nm Terminals 10 ... 12: output I (relay 1 (change-over contact)) Terminals 16 ... 18: output II (relay 2 (change-over contact)) Terminals 7 ... 9: output III, current output as source (7/8) or sink (7/9) Terminals 13 ...
Bul. 937C HART Loop Converter Installation Instructions Connecting a HART Handheld to the Field Device You have two options for connecting a HART handheld to the field device: Connection to terminals 22/24 of the isolated barrier. Connection to the field cables from the isolated barrier to the field device Transmitting the HART signal using the current outputs of the isolated barrier is not possible.
Bul. 937C HART Loop Converter Installation Instructions Polling Mode (command and answer) The isolated barrier deactivates the burst configuration of the field device. The isolated barrier performs the field device query using HART command 3. Procedure to Restore Burst Mode If the isolated barrier does not receive any more data from the field device in burst mode, the following actions are taken: The isolated barrier switches to polling mode.
Bul. 937C HART Loop Converter Installation Instructions Configuration Caution! Fault in the plant Changing the device data changes the device function. Before entering new device data, make sure the plant is not endangered by Attention changing the device data. Configuring the Device Configure the device using the buttons on the front side. Use the ,, ESC, and OK buttons for navigation. The following chapters contain more detailed information about the menus.
Bul. 937C HART Loop Converter Installation Instructions Parameterization Mode After being switched on, the device is in display mode. If you have password protection enabled, you must enter the password every time you transition from display mode to parameterization mode. Display mode Main menu parameterization mode Unit OK + ESC (simultaneously for 1 s) → ← ESC ▼ ▲ HARTcom ▼ ▲ Output ▼ Service Calling up Parameterization Mode Press the OK and ESC buttons simultaneously for approx. 1 second.
Bul. 937C HART Loop Converter Installation Instructions Password Protection You can activate password protection to protect parameterization from unauthorized changes. If password protection is enabled, you can view the parameter settings but not change them. Password protection is deactivated during delivery. The password is preset and cannot be changed by the operator. The password is 1234. Information about enabling password protection. Entering the Password 1.
Bul. 937C HART Loop Converter Installation Instructions Entering Numbers At the lowest menu level of the Parameter menu, you have the option of selecting or entering a numerical value. Parameter OK → ← ESC Current value, flashing ▼▲ ← ESC ↓ New value, flashing, not stored OK ↓ ← ESC New value, not flashing, stored Selecting a Numerical Value 1. Select the parameter for which you want to change the numerical value. 2. Press the OK button. The current value flashes. 3.
Bul. 937C HART Loop Converter Installation Instructions Entering Floating Point Figures At the lowest menu level of the Parameter menu, you have the option of entering floating point figures. The floating point figures can have the following structure: Positive number 43210000 Input Negative number -3210000 4321000 4321 E03 -321000 -321 E03 432100 432.1 E03 -32100 -32.1 E03 43210 43.21 E03 -3210 -3.21 E03 4321 4321 E00 -321 -321 E00 432.1 432.1 E00 -32.1 -32.1 E00 43.21 43.
Bul. 937C HART Loop Converter Installation Instructions Entering a Numerical Value 1. Select the parameter for which you want to enter the numerical value. 2. Press the OK button. 3. Press the OK button. With positive numbers, the first digit of the mantissa flashes. With negative numbers, the minus sign flashes. 4. To change the value in steps from 0 to 9, press the or button. 5. Confirm your selection with OK. The current value from the mantissa and exponent flashes.
Bul. 937C HART Loop Converter Installation Instructions Unit At the lowest menu level of the Unit menu, you have the option of selecting the unit type for the HART variables. auto The device displays the unit which is transferred from connected HART field devices for the HART variables PV, SV, TV, QV. custom The device displays the unit which was defined by you for the HART variables PV, SV, TV, QV in the Custom Tag menu.
Bul. 937C HART Loop Converter Installation Instructions Changing the Custom Tag of HART Variables 1. Select the HART variable for which you would like to change the custom tag. 2. 3. Press the OK button. Select the Custom Tag menu. The device displays: if a value has not been defined: the insert mark and the symbol If a value is defined: the insert mark on the first character, the following character, and the symbol 4.
Bul. 937C HART Loop Converter Installation Instructions HARTcom The HARTcom menu offers the option of specifying the method for communication between device and field device. If available, the device activates burst mode of the HART field device for the fastest possible communication. To query variables (PV, SV, TV, QV, if present) the device uses the universal HART command 3. HARTcom OK → ← ESC OK → ← ESC Mode ▼ secondary ▼ ▲ primary ← ESC TimeOut ▼ ← ESC OK → ← ESC 5 s ...
Bul. 937C HART Loop Converter Installation Instructions Selecting a Mode The device functions as primary or secondary HART master according to the HART standard. The device is compatible with each HART handheld and for every other HART master. 1. Use the or buttons to select whether the device should operate as a primary or secondary HART master. 2. Confirm your selection with OK.
Editing device data: InputBul. 937C HART Loop Converter Installation Instructions Note! Note that the field device can be put into burst mode, in accordance to the isolated barrier configuration. This also applies when a different HART master is in the HART circuit. If a different HART master changes the burst configuration of the field device, the isolated barrier waits until the other HART master logs out of the HART circuit.
Bul. 937C HART Loop Converter Installation Instructions Activating Rebuild If the connection to the field device has been lost, the localization phase can be performed with Rebuild without switching the device off and on again. 1. 2. Select On Rebuild with the or buttons. Confirm your selection with OK. 3. The display On Rebuild flashes. Press the OK button. 4. The device searches for connected field devices when booting. Press the ESC button once or multiple times to switch to display mode.
Editing device data: Input Bul. 937C HART Loop Converter Installation Instructions End Value ▼ OK → ← ESC see section ▲ Fault Current OK → ← ESC down ▼ up ▼ hold Iout2 OK → ← ESC same as Iout1 Iout3 OK → ← ESC same as Iout1 ▼ ▼ Rel1 ▼ Rel2 Selecting an Assignment The values of the selected HART variable (PV, SV, TV, QV) are shown on the current output. The number of available variables depends on the HART field device.
Editing device data: Input Bul. 937C HART Loop Converter Installation Instructions Defining a Characteristic The choice of characteristic defines the limits for measuring underrange and overrange. Measuring underranges or overranges outside the specified range cannot be analyzed. If measuring ranges are undercut or exceeded, the minimum or maximum value is issued constantly. 1. Select the characteristic using the or buttons. 2. Select the characteristic 4 - 20 unlimited.
Bul. 937C HART Loop Converter Installation Instructions Example Characteristic 4 - 20 NE43, start value 2 bar, end value 10 bar mA 20.5 20.0 4.0 3.8 0 1.9 2 10 10.25 Defining the Fault Current (fault message) The type of fault current chosen will define how the current output transmits the fault message to the controller. 32 1. 2. Select the type of fault current using the or buttons. Select the fault current down. 3. The fault message is indicated by a low current value.
Bul. 937C HART Loop Converter Installation Instructions Relay Contact Outputs In the Output menu, you have the option of defining relay contact outputs 1 to 2 of the device. The menu structure of the four relay contact outputs is identical. Relay contact output 1 is described as an example.
Bul. 937C HART Loop Converter Installation Instructions Selecting Relay Contact Output Menus 1. 2. Select the desired relay contact output using the or buttons. Confirm your entry with OK. The relay contact output menus trip value and fault signal are displayed. The active menu is marked as On. 34 3. 4. If you would like to activate the other menu, select this menu with or . Press the OK button twice. 5. The active menu is marked as On. The submenu is displayed.
Bul. 937C HART Loop Converter Installation Instructions Trip Value Calling up a Trip Value 1. 2. Select the Trip value menu with the or buttons. If the trip value menu is activated, press the OK button once. 3. The Assignment submenu is displayed. If the trip value menu is not activated, press the OK button twice. The Assignment submenu is displayed. The trip value menu is activated and is marked as On.
Bul. 937C HART Loop Converter Installation Instructions OK → ← ESC Mode ▼ passive ▼ active Restart Inhibit ▼ OK → ← ESC ▲ On ▼ OFF Delay OK → ← ESC 0 s ... 250 s Selecting an Assignment The values of the HART variables selected here (PV, SV, TV, QV) are monitored using a relay contact output. The number of available variables depends on the HART field device. When disabled is selected, the relay remains constant in a de-energized state. 1. 2.
Bul. 937C HART Loop Converter Installation Instructions You can implement the following applications: Switching direction max, direction of operation active: alarm if there is a trip value overrange, e. g., sounder on Switching direction max, direction of operation passive: switch off during trip value overrange, e. g., pump, heating, ... off, for larger hysteresis Min-Max operation (pump, heater, ...
Bul. 937C HART Loop Converter Installation Instructions Defining the Trip Point 1. 2. Enter the starting point as a floating point figure. For entering floating point figures, see chapter 3.5.4. The defined unit from the Unit menu is used as the unit. See chapter 3.5.5. Confirm your entry with OK. Defining Hysteresis Make sure during input that the hysteresis is at least 1 % greater than the trip point. This avoids "fluttering" of the relay. 1. 2. Enter the hysteresis as a floating point figure.
Bul. 937C HART Loop Converter Installation Instructions Response delay has the following effects: When the value of the trip point is out of range (exceeded or not reached) for a period of time longer than the delay time, the relay switches. When the value of the trip point ± hysteresis is in range (not reached or exceeded) for a period of time longer than the delay time, the relay switches back. Shorter overranges/underranges do not have an effect.
Bul. 937C HART Loop Converter Installation Instructions Fault Message Calling up a Fault Message 1. 2. Use the or buttons to select the Fault message menu. If the fault message menu is activated, press the OK button once. 3. The Restart inhibit submenu is displayed. If the fault message menu is not activated, press the OK button twice. The Restart inhibit submenu is displayed. The Fault message menu is activated and is marked as On.
Bul. 937C HART Loop Converter Installation Instructions Service In the Service menu, you have the option of specifying basic device parameters. Service OK → ← ESC Language ▼ OK → ← ESC ▲ ENG ▼ DE ← ESC Password ▼ OK → ← ESC ▲ On Password ▼ ▲ OFF Password Reset ← ESC OK → ← ESC ▼ On Reset ▼ ▲ OFF Reset ← ESC Version OK → ← ESC Version No. Select language 1. 2. 3. 4. 5. Use the or buttons to select which language is used by the device display. Select ENG for English.
Bul. 937C HART Loop Converter Installation Instructions Activating Password Protection To protect parameterization from unauthorized changes, you can enable password protection. Information about password protection see chapter 3.5.2. 1. 2. 3. 4. 5. Use the or buttons to select the desired setting. To enable password protection, select On Password. Confirm your selection with OK. To disable password protection, select Off Password. Confirm your selection with OK.
Editing device data: Default settings Bul. 937C HART Loop Converter Installation Instructions Operation Indicators during Operation The isolated barrier displays the following operating modes and fault messages during operation.
Bul. 937C HART Loop Converter Installation Instructions Display Indicators In normal operation, the display shows: the current values of the HART variables PV, SV, TV, QV in the selected unit the present current output values for the three current outputs in mA the current device status This display shows information about the device status of the field device (1 byte) and about the response code (1 byte) of the field device.
Bul. 937C HART Loop Converter Installation Instructions Display Options for Current Output Values and HART Variables To select the displayed measured values or current output values, use the and buttons. To select units for measured values, use the Unit menu. Every time the isolated barrier receives a HART command 3 message from the field device, the display is updated. The isolated barrier displays the current output values as a four-digit number.
Bul. 937C HART Loop Converter Installation Instructions Technical Specifications Default Settings The following table provides an overview of the default settings. Information about resetting the device to the default setting see Service. Tip If the device parameters have changed, enter these changes in the "Custom Value" column. This provides an overview of your individual device settings.
Editing device data: Default settings Bul. 937C HART Loop Converter Installation Instructions Menu Parameters Default setting Output --- Iout3 Assignment disabled Output --- Rel1 * Output --- Rel2 * Service Characteristic 4 - 20 NE43 Start value 0.000 End value 100.0 Fault current down Trip value On (selected) Trip value --- Assignment disabled Trip value --- Min/Max min Trip value --- Trip point 80.00 Trip value --- Hysteresis 10.
(DIR 10001176476) Publication 937-IN003A-EN-P - April 2014 (DIR 10001099005) 814570 Copyright © 2014 Rockwell Automation, Inc. All rights reserved. Printed in the U.S.A .
