Gpu Control Monitoring - Hobart 60CU20 Operation And Maintenance Manual With Illustrated Parts List

OM-2226 / Operation and Maintenance Manual
60CU20 / Series 500062 / 400 Hz. Generator Set

9) GPU Control Monitoring

The GPU control system performs complete diagnostic testing and continuous monitoring of all critical
circuits and operating electrical values. If the control system senses a problem with one of the circuits or
if any of the electrical values exceeds its safe operating limit, the control system will shut the GPU down,
or may allow the GPU to continue operation depending on the severity of the condition.
a) Commands
The ongoing operations conducted by the GPU are driven by the list of commands in Table 1. The
control board communicates these commands to all of the boards in the GPU. The first half of the
fault code identifies the command that was present when the fault occurred.
(1) Self-Test Mode
When power is first applied to the control circuit, the GPU performs complete self-diagnostics of
the internal circuitry. During this self-test, the GPU will perform the commands listed in the
enclosed charts. When a fault is detected during the self-test, the current COMMAND and
detected FAULT are displayed on the fault code display.
(2) Engine Start Mode
When the ENGINE START push-button is activated, the engine's starter and the engine's ECM
will be energized.
May 2, 2013
Revision 2
Commands
01.
\ Self-Test Mode
39.
40. Engine Start Mode
50. Engine Idle Mode
70. Engine Run Mode
80. Engine Shutdown Mode
90. Engine Stop Mode
99. System Off Mode
Operating Commands
Table 1
Chapter 2-4
Page 3