Phase Reversed
system
Description
In electric mode with the Stop/Run Switch ON, the system could not properly detect the phase, and electric operation requires shutdown.
Activation Conditions
If the system is in electric mode and the Stop/Run Switch is ON and the system cannot properly detect the phase.
Unit Behavior
Engine Operation: Alarm only. Electric Operation: Required Shutdown.
Reset Conditions
Auto reset when and the phase reversed switch = phase reverse okay for 2 seconds, or switch to diesel mode. Alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.
Corrective Actions
1. Check Circuit Breaker On The Main External Power Supply a. Check the 30A supply circuit breaker to make sure it is on. b. Check the voltage in the plug. 460V / 3 / 60Hz. 2. Check for Power In The Control Box, PSCON or PSCON2 a. Check PSCON and PSCON2. Use Component Test mode (Section 5.2.4) to test. Refer to Section 2.11 for amp values. View current draw in Component Test mode screen. b. Check for voltage at PSCON L1-L2, L2-L3, L1-L3. All three readings must be 460V + 10%. c. Check for voltage at PSCON2 L1-L2, L2-L3, L1-L3. All three readings must be 460V + 10%. 3. Check PSCON, and PSCON2 - Use Component Test mode (Section 5.2.4) to test. Refer to Section 2.11 for amp values. View current draw in Component Test mode screen. 4. Check Current Transformer (CT) a. Check current value. Power up control system in PC Mode. (Refer to Section 5.3.2.) Check Unit Data. Must be -2.0 to 1.5A with no load. b. Check CT power from main microprocessor. +5 VDC from terminal 2MM-29 to PCM-31 c. Check CT ground to main microprocessor. Check wiring from terminal 2MM-23 to PCM-30 d. Check CT signal to main microprocessor. Check wiring from terminal 2MM-12 to PCM-29