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TP-5737 5/01
32
Section 5 Decision-Maker
t
3+ Troubleshooting
5.2 Microprocessor Controller
Relay Descriptions
A description of the controller and generator relays
follows. Use this information to troubleshoot the
generator set in conjunction with the troubleshooting
microprocessor controller flowcharts on the following
pages. Use the troubleshooting section following and
the respective wiring diagram for additional information.
5.2.1
K1 Relay, Starter Solenoid
The K1 relay, located on the engine, energizes the
starter.
5.2.2
K2 Relay, Crank Relay on Main
Circuit Board
The K2 relay energizes the K1 relay. The LED2 lights
when energized during crank mode. The K2 relay is
located on the controller circuit board. See Figure 5-14.
5.2.3
K3 Relay, Run Relay on Main
Circuit Board
The K3 relay energizes the fuel solenoid and
instrumentation.
The K3 relay also energizes the generator voltage
regulator. LED3 lights when energized during crank and
run modes. The K3 relay is located on the controller
circuit board.
5.2.4
K4 Relay, Emergency Stop Relay
on Main Circuit Board
The K4 relay is continuously energized except during
emergency stop. LED4 is lit at all times except during
emergency stop. The K4 relay is located on the
controller circuit board. If the emergency stop kit is
connected (local or remote), remove the jumper from
circuit board TB1-1 and 1A. If no emergency stop kit is
connected, a jumper must connect terminals TB1-1 and
1A. See Figure 5-14.
A-336415-L
1
2
3
4
5
7
6
1. K2 relay
2. K3 relay
3. K4 relay
4. LED1
5. LED4
6. LED3
7. LED2
Figure 5-14
Main Circuit Board Relays
5.2.5
K5 Relay, Governor Control Relay
The K5 relay energizes the engine governor control
circuit. The K5 relay is located in the generator junction
box.
5.3 Microprocessor Controller
Hazardous voltage.
Can cause severe injury or death.
Operate the generator set only when
all guards and electrical enclosures
are in place.
Moving rotor.
WARNING
Grounding electrical equipment. Hazardous voltage can
cause severe injury or death.
Electrocution is possible
whenever electricity is present.
Open the main circuit
breakers of all power sources before servicing the equipment.
Configure the installation to electrically ground the generator
set, transfer switch, and related equipment and electrical
circuits to comply with applicable codes and standards. Never
contact electrical leads or appliances when standing in water
or on wet ground because these conditions increase the risk of
electrocution.
Содержание 125EOZ/100EFOZ
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Страница 12: ...TP 5737 5 01 VI Safety Precautions and Instructions Notes...
Страница 14: ...TP 5737 5 01 ii Service Assistance Notes...
Страница 58: ...TP 5737 5 01 44 Section 5 Decision Makert 3 Troubleshooting Notes...
Страница 70: ...TP 5737 5 01 56 Section 6 Decision Makert 1 Controller Troubleshooting Notes...
Страница 108: ...TP 5737 5 01 94 Section 8 Disassembly Reassembly Notes...
Страница 110: ...TP 5737 5 01 96 Section 9 Wiring Diagrams Notes...
Страница 118: ...TP 5737 5 01 Section 9 Wiring Diagrams 104 344498A C Figure 9 8 Wiring Diagram Decision Makert 3 Controller Sheet 1 of 5...
Страница 127: ...TP 5737 5 01 113 Section 9 Wiring Diagrams ADV 6122 B Figure 9 17 Wiring Diagram Decision Makert 3 Controller...
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