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Controller Description
SG+ Controller Description
The SG+ controller is a two-piece, self contained
microprocessor for diesel generator sets. The SG+
display is mounted on the control box cover. The
SG+ microprocessor is mounted inside the control
box (see Figure 9 on page 34). Two external
relays, the Start Relay and the Preheat Relay, are
also mounted inside the control box near the
microprocessor.
This system automatically controls generator
operation by providing:
•
Automatic unit preheat and engine startup
during initial startup or delayed restart
•
Variable air heater preheat time
•
Automatic Pretrip Test capability
•
Delayed alternator excitation for 15 seconds
or until engine coolant temperature increases
to 32 C (90 F)
•
Unit shutdown protection for the engine and
alternator. The controller stops the unit due to
low engine oil pressure, low engine oil level,
high coolant temperature, fuel relay feedback
failure, or alternator overload.
•
Automatic unit restart 20 minutes after unit
shutdown due to an unknown condition, high
engine water temperature, engine failure to
start, fuel relay feedback failure, check fuel
alarm, or alternator overload (also low engine
oil pressure if enabled). It will attempt three
(3) restarts and then stop.
Figure 8: SG+ Controller Display
Summary of Contents for SGCO 3000
Page 4: ......
Page 12: ...SGCO 3000 Genset Addendum 12...
Page 14: ...Genset Model Features 14...
Page 22: ...Service Guide 22...
Page 32: ...Unit Description Features Options 32...
Page 78: ...Operating Instructions 78...
Page 86: ...Electrical Maintenance 86...
Page 114: ...Engine Maintenance 114...
Page 124: ...Alternator Operation and Diagnosis 124...
Page 130: ...Structural Accessory Maintenance 130...
Page 138: ...Index 138...
Page 140: ...Electrical and SG Menu Flow Diagrams 140...
Page 141: ...141 SGCO 3000 Wiring Diagram Page 1 of 1...