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| Illustration 1 | g00328626 |
Customer Interface Module (CIM) (1) Relay board. (2) Electronic control. | |
For more information, see the Testing And Adjusting, "Schematics And Wiring Diagrams".
The CIM provides an interface (separate relay contacts) between the GSC and switch gear. The two major components of CIM are relay board (1) and electronic control (2). The electronic control (2) connects to the same serial data link as the alarm annunciator. The CIM and the alarm annunciator operate similarly. One difference is that the data link information is decoded into discrete outputs. The outputs then drive the relays that are located on relay board (1). The relay contacts can be used to sound a horn. The relay contacts can be used to flash a lamp. The relay contacts can be used to trigger some other action. Once an output is activated it remains energized until the initiating faults are cleared. If there is a malfunction in the serial data link, all electronic control outputs will flash at 0.5 Hz. This includes all relays. The CIM is designed to be powered only by a 24 DCV or 32 DCV battery system..
The available serial data link information is listed below.
- High coolant temperature alarm.
- Low oil pressure alarm.
- Low coolant temperature alarm.
- Engine control switch (ECS) NOT in auto.
- Low oil pressure shutdown.
- High coolant temperature shutdown.
- Overcrank.
- Overspeed.
- Diagnostic fault (GSC).
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. The CIM lamp test is activated when either of the following conditions are present.
- Terminal 5 is connected to terminal 7 of electronic control (2) .
- The GSC lamp test signal is received over the data link.
Note: CIM ignores the GSC lamp test signal when terminal 6 is connected to terminal 7 of electronic control (2) .
Outputs
- The relays on relay board (1) are protected by fuses. The contacts are flashed silver. The contacts are rated at 1 amp 28 DCV. The relays draw 20 mA (at 24 DCV).
- The driver outputs of electronic control 2 are intended to drive incandescent lamps or relay loads. The driver outputs draw up to 600 mA (15 to 45 DCV).
Specifications
- For CIM installation, the maximum distance between electronic control (2) and the GSC is 305 m (1000 ft).
- The operating voltage range is 15 to 45 DCV (24 DCV nominal)
- CIM is capable of operating with or without earth ground.
- The terminals on electronic control (2) are 6.4 mm (0.25 inch) push on connectors.
- Customer connections at relay board (1) are 6-32 screw terminals.