MCM System Functionality
Each MCM panel is designed to control a pair of engine ECMs (Electronic Control Modules) so that the engines can operate either independently or as one unit, sharing load as directed by switch, throttle, and feedback inputs. Additionally, each MCM panel provides certain feedback mechanisms to inform operators of the MCM system status.
Controlling ECM/Status Relay
The following relays are inside the MCM panel:
- Engine 1 Local/Remote Status Relay
- Engine 2 Local/Remote Status Relay
When the controlling MCM (either master or slave) determines that engine 1 is in remote mode, engine 1 relay is activated.
When the controlling MCM (either master or slave) determines that engine 2 is in remote mode, engine 2 relay is activated.
The contacts (common, normally open, and normally closed) of each relay are available for customer connections on the terminal block. The customer, however, must connect only an acceptable load to those contacts.
The maximum specifications for the relay contacts are in Table 1.
| Dry Contacts Maximum Specifications | |||
| Condition | Value | Unit | |
| Max Voltage | AC or DC | 250 | Volts |
| Max Current | at 120 VAC | 2.9 | Amps |
| at 240 VAC | 1.4 | Amps | |
| at 24 VDC | 3 | Amps | |