ADAPTER 2053079 - Caterpillar

Table 1
OP10 Setpoints (1) - AC Offset Adjustment    
Setpoint     Name     Description     Range Of Value     Factory Default    
PH A     Phase A Voltage Adjustment     Value used by the GSC in order to offset the voltmeter (for the phase A to neutral reading) from the actual voltage measurement.     -5.0% to +5.0% of measured voltage in increments of 0.04%     0    
PH B     Phase B Voltage Adjustment     Value used by the GSC to offset the voltmeter (for the phase B to neutral reading) from the actual voltage measurement.     -5.0% to +5.0% of measured voltage in increments of 0.04%     0    
PH C     Phase C Voltage Adjustment     Value used by the GSC to offset the voltmeter (for the phase C to neutral reading) from the actual voltage measurement.     -5.0% to +5.0% of measured voltage in increments of 0.04%     0    
PH A-B     Phase A-B Voltage Adjustment     Value used by the GSC to offset the voltmeter (for the phase A to phase B reading) from the actual voltage measurement.     -5.0% to +5.0% of measured voltage in increments of 0.04%     0    
PH B-C     Phase B-C Voltage Adjustment     Value used by the GSC to offset the voltmeter (for the phase B to phase C reading) from the actual voltage measurement.     -5.0% to +5.0% of measured voltage in increments of 0.04%     0    
PH C-A     Phase C-A Voltage Adjustment     Value used by the GSC to offset the voltmeter (for the phase C to phase A reading) from the actual voltage measurement.     -5.0% to +5.0% of measured voltage in increments of 0.04%     0    
( 1 ) The setpoints are programmed to the default value at the factory. The setpoints may be changed in order to satisfy the customer requirements or the application requirements.OP10 is the option for adjusting the voltmeter readings of the GSC. This adjustment may be necessary when generator sets are operated in parallel. The GSC AC voltage measurements are calibrated at the factory. An accurate standard is used. However, when two generator sets are paralleled, the application may require the paralleled generator sets to have exactly the same voltage value. The AC offset of one GSC is changed to match the voltage value of another generator set. Note: It is NOT recommended that the AC offset be altered under any other circumstances. Performing this procedure takes the GSC out of factory calibration. Procedure For Voltmeter Offset Adjustment
The paralleled generator sets must be running at rated speed. The generator sets can then have the voltage adjustment made. Note: Service mode cannot be entered when the ECS is in the AUTO position.
Enter service mode on the GSC that is being adjusted. Enter the password. "OP 1" is showing on lower display. For more information, see the Systems Operation, "Password Entry OP3".
Press "SCROLL UP" key nine times. "OP 10" is showing on the lower display.
Press "SELECT"