3512B Petroleum Engines Caterpillar

The ECM automatically warns the operator of low system voltage. The default settings that are programmed at the factory are listed in Table 1.

Table 1

Voltage Monitoring
Parameter	Default Setting
Warning setpoint	20 volts
Warning delay	10 seconds
Hysteresis	2 volts
Security level	No required password

If the voltage is below 20 volts for 10 seconds, a warning will occur. To deactivate the warning, the voltage must rise above 22 volts.

The setpoint can be programmed to a value between 20 and 30 volts.