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| Illustration 1 | g00328626 |
Customer Interface Module (CIM) (1) Relay Board (2) Electronic Control | |
See Testing And Adjusting, "Schematics And Wiring Diagrams" for more information about the Customer Interface Module (CIM).
The CIM provides an interface between the GSC and the switchgear. Separate relay contacts are the interface that is between the GSC and the switchgear. The two major components of CIM are the relay board (1) and the electronic control (2). The electronic control (2) and the alarm annunciator connect to the same serial data link. The operation of the CIM is similar to the operation of the alarm annunciator. The information on the data link is decoded into discrete outputs. The outputs then drive the relays that are located on the relay board (1). The relay contacts can be used to sound a horn. The relay contacts can be used to flash a lamp or the relay contacts can be used to trigger another procedure. Once an output is activated, the output remains energized until the faults that initiated the alarm are cleared. All electronic control outputs cycle at 0.5 Hz if a malfunction in the serial data link occurs. This includes the relays as well. The CIM is designed for operation when the CIM is powered by a battery system that supplies 24 DCV. The CIM is also designed for operation when the CIM is powered by a battery system that supplies 32 DCV.
The available serial data link information is listed below.
- High coolant temperature alarm
- Low oil pressure alarm
- Low coolant temperature alarm
- Low oil pressure shutdown
- High coolant temperature shutdown
- Overcrank
- Overspeed
- Diagnostic fault (GSC)
- The engine control switch (ECS) is NOT in AUTO.
Application Guidelines
Lamp Test
When a lamp test signal is received, the CIM activates all outputs for 10 seconds. The CIM deactivates the outputs early if the lamp test signal is deactivated. Two lamp test signals are possible. When either of the following conditions are present, the lamp test of the CIM is activated.
- Terminal 5 is connected to terminal 7 of electronic control (2) .
- The GSC lamp test signal is received over the data link.
Note: When terminal 6 is connected to terminal 7 of the electronic control (2), the CIM ignores the GSC lamp test signal.
Outputs
- The relays that are on the relay board (1) are protected by fuses. The contacts are flashed with silver. The contacts are rated at 1 amp 28 DCV. The relays draw 20 mA at 24 DCV.
- The outputs that are from the driver of the electronic control (2) are intended to drive the incandescent lamps or the driver outputs are intended to drive the relay loads. The driver outputs will consume a maximum of 600 mA when the voltage is 15 DCV to 45 DCV.
Specifications
- For installation of the CIM, the maximum distance that is between the electronic control (2) and the GSC is 305 m (1000 ft).
- The operating voltage range is from 15 DCV to 45 DCV. 24 DCV is the nominal voltage.
- The CIM is capable of operating with earth ground or operating without earth ground.
- The terminals that are located on the electronic control are blade type connectors (push on) 6.4 mm (0.25 inch).
- Connections that may be used by the customers at the relay board (1) are 6-32 screw terminals.