Product Manual
Table Of Contents
- Table of Contents
- 1. Important Safety Instructions
- 1.1 Warning, Caution, and Note Styles Used in This Manual
- 1.2 General Information
- 1.3 General Safety Precautions
- 1.4 Generator Set Safety Code
- 1.5 Batteries Can Explode
- 1.6 Electrical Shocks and Arc Flashes Can Cause Severe Personal Injury or Death
- 1.7 Fuel and Fumes Are Flammable
- 1.8 Exhaust Gases Are Deadly
- 1.9 The Hazards of Carbon Monoxide
- 1.10 Earth Ground Connection
- 2. Introduction
- 3. Control System
- 4. Operation - PowerCommand 1.1
- 5. Maintenance
- 6. Troubleshooting
- 6.1 Engine Is Difficult to Start or Does Not Start
- 6.2 Code 143 - Engine Oil Pressure Low (Warning)
- 6.3 Code 151 - Engine Coolant Temperature High (Shutdown)
- 6.4 Code 155 - Intake Manifold Temperature High (Shutdown)
- 6.5 Code 197 - Coolant Level Low (Warning)
- 6.6 Code 415 - Engine Oil Pressure Low (Shutdown)
- 6.7 Code 421 - Engine Oil Temperature High (Warning)
- 6.8 Code 441 - Battery Voltage Low (Warning)
- 6.9 Code 488 - Intake Manifold Temperature High (Warning)
- 6.10 Code 1438 - Fail to Crank (Shutdown)
- 6.11 Code 1472 - High AC Current (Shutdown)
- 6.12 Code 5134 - Unknown Shutdown at Idle
- 7. Manufacturing Facilities
49A045R242 (Issue 7) Copyright © 2016 Cummins Inc.
4 Operation - PowerCommand 1.1
4.1 Sequence of Operation
NOTICE
The following sequences are based on an approximate time duration. Your
generator set may vary slightly from the timing diagrams in this manual. All
referenced times are based on default control settings. The following
sequences are applicable to generator sets connected to a single phase RA
series transfer switch.
Power Outage Sequence
The sequence of operation after a power outage (when the generator set is in Auto
Mode) is as follows:
1. In normal operation, the utility power is running to the transfer switch and then
to the building load, and the generator set is off.
2. The utility power turns off (power outage).
3. One second after the power outage, the transfer switch sends the command to
the generator set to start.
4. The generator set starts and provides voltage to the transfer switch, but the
transfer switch does not switch (allowing the voltage to go to the building) until
after a delay.
FIGURE 17. TIME REMAINING UNTIL TRANSFER SCREEN
5. Five seconds after starting, the generator set provides a signal to the transfer
switch to transfer the building load to the generator set.