TP-6196 5/04
20
Section 3 Troubleshooting
Troubleshooting Chart, continued
Problem
Reference
Corrective Action
Possible Cause
High
output
lt
Incorrect controller configuration
Check and adjust the controller configuration
parameters.
Section 4.5.2
p
voltage
Incorrect controller voltage
settings
Check and adjust the controller voltage settings.
Section 4.5.3
Engine speed too high
Check engine speed using tachometer or frequency
meter. Adjust governor as necessary.
Section 5.8
Loose voltage sensing
connections
Check connections: stator leads 11 and 44 and P15
controller connection.
Section 7
SCR module
Check wiring and connections to the SCR module.
Check auxiliary winding fuse F1 (lead 55).
Replace SCR module and recheck voltage.
Section 4.9
Section 5.11
Section 4.9
Controller
Check fuses, wiring and connections. Before replacing
controller, replace SCR module and test voltage.
Section 4.10
No output
voltage
AC output circuit breaker open
Check for AC voltage on the generator side of circuit
breaker. If there is AC voltage on the generator side of
the breaker, then a problem in the load circuits is
causing the line circuit breaker to trip. Check for and
correct short circuits or overloading on the load side
before resetting the circuit breaker.
—
Alternator or control system
Perform separate excitation procedure to isolate the
problem to the alternator or the control system. Then
troubleshoot the alternator or control system
components as follows.
Section 5.2
Aux. winding fuse blown (lead 55) Replace blown fuse. If fuse blows again, check stator.
Section 5.3
SCR module
Check auxiliary winding fuse F1 (lead 55).
Replace SCR module and test voltage.
Section 5.11
Section 4.9
Controller
Check controller settings. Check wiring and
connections. Before replacing controller, replace SCR
module and check voltage.
Section 4.5
Section 4.10
Open wiring, terminal, or pin in
buildup circuit or SCR module
circuit
Check continuity.
Sections 5.11
Section 7
Brushes
Inspect brushes and replace if worn
Section 5.6
Check for brushes sticking in brush holder or broken
brush spring
Section 5.6
Rotor connections
Check for open circuit in rotor connection circuit (leads
FN and FP to SCR and RIB)
Section 7
Rotor slip rings dirty or corroded
Check slip ring condition.
Section 5.4
Rotor (open, grounded, or
shorted windings)
Check voltage and continuity.
Section 5.4
Stator (open, grounded, or
shorted windings)
Check voltage and continuity.
Section 5.3
Flash relay (K3) on relay
interface board (RIB)
Check flash LED on RIB.
Check fuse F2 and troubleshoot RIB as described in
Section 4.8.
Section 4.8
Noisy
i
Exhaust system leaks
Check and replace as necessary.
Section 2.6
y
operation
Engine not running smoothly
See “Generator set operates erratically,” this table
—
Broken or damaged
vibromount(s)
Check and replace as necessary.
Section 6
Loose or vibrating sheet
metal/housing
Retighten screws, replace rivets.
—
Exhaust piping or air inlets/outlets
not securely installed
Inspect for loose parts and secure if necessary.
Section 2.6
Excessive engine/generator
vibration
Check, rotor, crankshaft, bearing, etc. (disassembly of
engine and/or alternator may be required).
Section 6
Engine S/M
Содержание 12RES
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