ADAPTER AS-PUMP 7N5245 - Caterpillar

Illustration 1 g00321237
(1) Amber indicators (2) Red indicators (3) Switch for lamp test (4) Switch for alarm silence (5) HornThe alarm module is a component which is located on the switchgear. Red indicators (2) and amber indicators (1) are the visual indicators. The horn (5) is an audible indicator. A 24 DCV battery system powers the ALM. The alarm (ALM) gives a warning of conditions that are becoming a problem. The warning occurs before conditions are severe enough to shut down the engine.An alarm fault develops while the generator set is running and when the engine control switch (ECS) is in the "COOLDOWN/STOP" position or in the "AUTO" position.Description Of Operation
The ALM receives data from the following items: switch inputs, internal circuitry and a serial data link from the GSC+.Switch Inputs
Four switch inputs are available for the switch connections. Switch inputs that are connected to ground "B-" will be active. See Table 1.Internal Circuitry
Internal circuitry determines if the DC battery supply voltage is too low. The setpoint is set at the factory at 24 DCV. Data Link
The ALM receives data from the GSC+ by a serial data link. The received data includes the following list:
Coolant temperature has exceeded the high temperature alarm setpoint that is programmed into the GSC+.
Oil pressure is below the low oil pressure alarm setpoint that is programmed into the GSC+.
Coolant temperature is below the low temperature alarm setpoint that is programmed into the GSC+.
The ECS is not in the "AUTO" or "MAN/START" position.
Oil pressure is below the low oil pressure shutdown setpoint that is programmed into the GSC+.
Coolant temperature has exceeded the high water temperature shutdown setpoint that is programmed into the GSC+.
The engine has failed to start.
The engine speed exceeds the engine overspeed setpoint that is programmed into the GSC+.
The engine is shut down due to a coolant loss fault.
The engine is shut down due to a spare fault.
The engine is shut down due to an emergency stop fault.
The engine is shut down due to a diagnostic fault.The first eight items control the operation of the indicators and horn. See Table 1 for more information. The last four items control the operation of the horn only. A maximum of three modules (alarm module, customer interface module (CIM), or relay driver module (RDM)) can be connected to the serial data link. The maximum distance between a module and the GSC+ is 305 m (1000 ft). The data link will malfunction under the following conditions with multiple modules:
One of the modules is powered down. "B+" or "B-" is disconnected.
The module that is powered down remains connected to the data link.Under these conditions, the indicators that are controlled by the data link of the other modules will flash at 0.5 Hz.Indicator And Horn Operation
Table 1
Indicator And Horn Function    
Color of the Indicator     NFPA 99 ALM     EMCP RAN    
1 Amber     High