Installing Modules
This procedure explains how to install a module.
WARNING: Do not install more than one module at the same time. You must push the WARNING first module in and wait until the Active indicator turns on, then install the next module.
Procedure
1 Ensure that the slots have been fitted for the appropriate module. For details, see Slot Keys for Modules on page 242.
2 Install the module and push the module in until it is firmly seated. Tighten the module's retractable fasteners to 10 inch-pounds.
3. If using a redundant module, install an identical type module in the empty slot and push the module in until it is firmly seated. Tighten the module's retractable fasteners to 10 inch-pounds.
Digital Output Field Wiring Precautions
When installing field wiring for Digital Output Modules, Invensys recommends that you do not make parallel connections or series connections to digital output points. These types of connections can cause the commanded state and the measured state of points to disagree, resulting in Load/Fuse alarms and limited effectiveness of Output Voter Diagnostics (OVD).
Pulse Input Module Installation and Operation
Pulse Input Module installation includes these requirements for proper operation.
Installation Requirements
• Wire each point with individually shielded, twisted-pair cable. Keep the wire as short as possible. Connect the shield to earth ground at the sensor or the controller. Where possible, route the cable away from all noise sources.
• To minimize signal reflections, put a termination resistor (1 to 10 kilohms) on each input signal. Mount the termination resistor at the termination panel across the positive (+) and negative (–) input terminals.
• Short together the positive (+) and negative (–) terminals of all unused inputs.
Using with Amplified Sensors or Laboratory Pulse Generators
• Where possible, use an amplifier or pulse generator with a fully balanced output (an isolated output stage). When using an amplified speed sensor, a lower-value termination resistor is acceptable (50 to 150 ohms).
Model
3501E/T
3502E
3503E
3504E
3505E
3510
3511
3515
3564
3601E/T
3603B
3603E/T
3604E
3607E
3611E
3613E
3614E
3615E
