PLUG 8J4645 - Caterpillar

The timers in the following list are represented on the controller by the corresponding letter code."P" - Engine start timer"W" - Delay to emergency timer"T" - Delay to normal timer"U" - Engine cooldown timer"DW" - Delay timer from open to emergency"DT" - Delay timer from open to normalThe relays that operate the transfer switch are represented by the following letter codes: "CCE", "CCN", "CCEO" and "CCNO". The solenoids that operate the transfer switch are represented by the following letter codes: "CE", "CN", "CEO" and "CNO". The limit switches that operate the transfer switch are represented by the following letter codes: "SE" and "SN". The letter codes are used on the parts and the letter codes are used on the circuit diagrams.The transfer of the load to the emergency power source begins automatically when any phase of the normal power source falls below the preset dropout voltage level, and the undervoltage condition is detected by the MX200 controller. The engine start timer begins. The engine start timer delay is provided in order to override outages that are only momentary. If the voltage of the normal power source returns to a value above the pickup voltage, the engine start timer cycle is reset. The transfer of power is stopped.If the engine start timer has completed the cycle, and the voltage of the normal power source has not returned to the normal range. Then, the controller sends an engine start signal to