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| Illustration 1 | g00329183 |
Customer Communication Module (CCM) | |
The customer communication module (CCM) provides a communication link between the GSC+ and the host computer of the customer. The CCM converts data from the standard RS-232C format to the CAT Data Link format. The CCM can also convert data from the CAT Data Link format to the standard RS-232C format. An RS-232C cable is available at most Electronics Stores. Caterpillar's 146-8488 RS-232C Cable is a suitable cable. The CCM allows an operator to remotely control the same information that is available on the GSC+ display at the host computer.
The CCM can remotely control the following functions when the GSC+ is in the normal mode with the engine control switch (ECS) in the AUTO position.
- Start the engine.
- Stop the engine if the remote start/stop contact is not closed.
- Activate or deactivate the electronic governor relay (EGR), provided that the low oil pressure shutdown setpoint has been exceeded.
- Activate the GFR or deactivate the GFR, provided that the GSC+ has not detected a fault. In this case, the GSC+ will already have activated the GFR.
- Remotely abort the cooldown.
- Remotely control the spare output.
- Remotely control the programmable spare relay.
Note: The CCM can only control the spare output in an active low type of configuration. See System Operation, "Spare Input/Output Programming OP6" for more information.
The addition of a specified modem allows two-way communication when the generator set and the host computer are separated by great distances.
For more information regarding the CCM, see the Operations And Maintenance Manual, SEBU6874, "Customer Communication Module (CCM) for Diesel Engines". This manual contains information for the EMCP II, EMCP II+ and EMCP II+P.
Using the CCM in Paralleling Applications
The CCM can be used to remotely parallel generators that are equipped with the EMCP II+P. The connections for the CCM are on contact 21 and contact 22. If the bus is dead when the first generator is started, the generator must have setpoint P310 (Dead Bus Closure) enabled. A separate command is required to start each additional generator. Multiple generators can be started and synchronized in a specific sequence by setting the programmable timer (setpoint P312). For automatic paralleling, the engine control switch must be in the AUTO position. The parallel mode switch must be in the AUTO position. After using the CCM to command an engine to start, the generator will automatically synchronize.