Rockwell Automation Allen-Bradley 937CU-AIHLP-DC1 Installation Instructions Manual

Hart loop converter

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937CU-AIHLP-DC1 Installation Instructions

HART Loop Converter

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Page 1 937CU-AIHLP-DC1 Installation Instructions HART Loop Converter...
Page 3: Symbols Used
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. This symbol warns of possible danger. Failure to heed this warning may result in personal injury or death, or property damage, including destruction.
Page 4: Safety Notes
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 The protection of operating personnel and of the system is only ensured if the devices are used in accordance with their intended purpose.
Page 5: Reference To Further Documentation
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.
Page 6: Improper Use
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.
Page 7: Delivery, Transport, Disposal
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).
Page 8 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.
Page 9 Product Specifications Bul. 937C HART Loop Converter Installation Instructions Assembly Operating and indicating elements RS232 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24...
Page 10 Bul. 937C HART Loop Converter Installation Instructions Removable terminals, blue LC display Display for showing the measured values  the current output values  the fault messages  the parameterization mode  Keypad Four keys for selecting the displayed values, the current output values and for setting the parameters of the ...
Page 11 Product Specifications Bul. 937C HART Loop Converter Installation Instructions Dimensions Housing 40 mm 115 mm (1.6") (4.5'') 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. ...
Page 12: Power Rail
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.
Page 13 Bul. 937C HART Loop Converter Installation Instructions Power Rail is available in two sizes: Power Rail 937A-PR08 and 937A-PR20  Three leads: • two conductors for power • one conductor for collective error messaging Power Rail...
Page 14 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.
Page 15 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.
Page 16 Bul. 937C HART Loop Converter Installation Instructions HART Zone 0, 1, 2 ERR 24 V DC Div. 1, 2 Power Rail...
Page 17 Bul. 937C HART Loop Converter Installation Instructions Connection The following connections are available: Connecting the Drive Circuit Connect the drive circuit to the green terminals. Note the tightening torque of the terminal screws. The tightening torque is 0.5 Nm...0.6 Nm Terminals 10 ...
Page 18: Description Of Hart Operations
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 ...
Page 19 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.
Page 20: Configuring The Device
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.
Page 21: Parameterization Mode
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. Main menu parameterization mode OK + ESC (simultaneously for 1 s) →...
Page 22: Password Protection
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.
Page 23: Entering Numbers
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. OK → Parameter Current value, flashing ← ESC ▼ ▲ ↓ New value, flashing, not stored ←...
Page 24 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 Input Negative number Input...
Page 25: Entering A Numerical Value
Bul. 937C HART Loop Converter Installation Instructions Entering a Numerical Value Select the parameter for which you want to enter the numerical value. Press the OK button. The current value from the mantissa and exponent flashes. Press the OK button. With positive numbers, the first digit of the mantissa flashes.
Page 26 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.
Page 27 Bul. 937C HART Loop Converter Installation Instructions Changing the Custom Tag of HART Variables Select the HART variable for which you would like to change the custom tag. 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 ...
Page 28 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.
Page 29: Selecting A Mode
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. Use the  or buttons to select whether the device should operate as a primary or secondary HART master.
Page 30 Editing device data: Input Bul. 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.
Page 31: Current Outputs
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. Select On Rebuild with the  or  buttons. Confirm your selection with OK.
Page 32 Editing device data: Input Bul. 937C HART Loop Converter Installation Instructions OK → End Value see section ← ESC ▼ ▲ OK → Fault Current down ← ESC ▼ ▼ hold OK → Iout2 same as Iout1 ← ESC ▼ OK →...
Page 33 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.
Page 34 Bul. 937C HART Loop Converter Installation Instructions Example Characteristic 4 - 20 NE43, start value 2 bar, end value 10 bar 20.5 20.0 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.
Page 35: Relay Contact Outputs
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.
Page 36 Bul. 937C HART Loop Converter Installation Instructions Selecting Relay Contact Output Menus 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.
Page 37: Trip Value
Bul. 937C HART Loop Converter Installation Instructions Trip Value Calling up a Trip Value Select the Trip value menu with the  or buttons. If the trip value menu is activated, press the OK button once. The Assignment submenu is displayed. If the trip value menu is not activated, press the OK button twice.
Page 38 Bul. 937C HART Loop Converter Installation Instructions OK → Mode passive ← ESC ▼ ▼ active OK → Restart Inhibit ← ESC ▼ ▲ ▼ OK → Delay 0 s ... 250 s ← ESC Selecting an Assignment The values of the HART variables selected here (PV, SV, TV, QV) are monitored using a relay contact output.
Page 39 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 ...
Page 40 Bul. 937C HART Loop Converter Installation Instructions Defining the Trip Point 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.
Page 41 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 ±...
Page 42: Fault Message
Bul. 937C HART Loop Converter Installation Instructions Fault Message Calling up a Fault Message Use the  or buttons to select the Fault message menu. If the fault message menu is activated, press the OK button once. The Restart inhibit submenu is displayed. If the fault message menu is not activated, press the OK button twice.
Page 43: Select Language
Bul. 937C HART Loop Converter Installation Instructions Service In the Service menu, you have the option of specifying basic device parameters. OK → OK → Service Language ← ESC ← ESC ▼ ▲ ▼ OK → Password On Password ← ESC ←...
Page 44: Activating Password Protection
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. Use the  or buttons to select the desired setting. To enable password protection, select On Password. Confirm your selection with OK.
Page 45: Led Indicators
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. LED Indicators Status Description Green LED No power supply Flashes regularly Start-up phase, self-test Normal function Red LED...
Page 46: Display Indicators
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 ...
Page 47 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 ...
Page 48 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. If the device parameters have changed, enter these changes in the "Custom Value" column.
Page 49 Editing device data: Default settings Bul. 937C HART Loop Converter Installation Instructions Menu Parameters Default setting Custom value Output --- Iout3 Assignment disabled Characteristic 4 - 20 NE43 Start value 0.000 End value 100.0 Fault current down Output --- Rel1 * Trip value On (selected) Trip value --- Assignment...

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