RADIATOR GP 1W0038 - Caterpillar

Alarm Modules
The alarm module (ALM) is an attachment located in the center of the control panel. Visual indication is by means of red LED's (2) and amber LED's (1). Audible indication is by means of a horn (3).
Alarm Module (NFPA 110 ALM)
(1) Amber LED's. (2) Red LED's. (3) Horn. (4) Acknowledge/silence switch.The purpose of the alarm modules (ALM) is to give a warning of conditions that can become a problem before they are bad enough to shut down the engine or keep it from starting.If, with the ECS in the "COOL DOWN/STOP" or "AUTO" positions, an alarm condition develops prior to or while the generator set is running, that condition will be annunciated by means of the optional alarm module and/or the remote annunciator.One basic alarm module is used to satisfy the requirements of standby NFPA 99 alarm module, standby NFPA 110 alarm and NFPA 99 remote annunciator. The only differences between these modules is in the graphics film on the front of the panel and the jumper wires on the rear (see the DC Schematic). The NFPA 99 remote annunciator also has a lamp test switch. The following description of operation refers to the alarm/remote annunciator module as the annunciator module.Description Of Operation
The annunciator module receives data from three sources: switch inputs, internal circuitry, and a serial data link from the engine control module. Switch Inputs:Up to four inputs are available to connect switches (i.e., Low Fuel Level) too. (See Table 1) Internal Circuitry:Internal circuitry is used to determine and annunciate if the supply voltage is below a setpoint. Data Link:The annunciator module receives data from the engine control module by means of a serial data link. The information included in this data stream includes: 1. Coolant temperature has exceeded the high temperature alarm setpoint programmed into the engine control module.2. Oil pressure is below the low oil pressure alarm setpoint programmed into the engine control module.3. Coolant temperature is below the low temperature alarm setpoint programmed into the engine control module.4. The engine control switch is not in the "AUTO" or "RUN" position.5. Oil pressure is below the low pressure shutdown setpoint programmed into the engine control module.6. Coolant temperature has exceeded the high coolant temperature shutdown setpoint programmed into the engine control module.7. The engine failed to start (overcrank).8. The engine speed exceeded the overspeed setpoint programmed into the engine control module. 9. The engine shut down due to a remote fault condition.10. The engine shut down due to a spare fault condition.11. The engine shut down due to an emergency stop condition.12. The engine shut down due to a diagnostic fault condition.Data items 1 through 8 control the operation of the LED's and the horn as indicated in table 1. Data items 9 through 12 control the operation of the horn only.LED And Horn Operation:
When an alarm condition occurs, the LED corresponding to that condition will flash at 2 hertz and the horn will sound. If the alarm condition is "NOT LATCHED", the LED