TP-6461 1/08
58
Section 4 Controller Test and Replacement
4.3
Controller Power
Hazardous voltage.
Will cause severe injury or death.
Only authorized personnel should
open the enclosure.
DANGER
Testing live electrical circuits.
Hazardous voltage or
current can cause severe injury or death.
Have trained and
qualified personnel take diagnostic measurements of live
circuits. Use adequately rated test equipment with electrically
insulated probes and follow the instructions of the test
equipment manufacturer when performing voltage tests.
Observe the following precautions when performing voltage
tests: (1) Remove all jewelry. (2) Stand on a dry, approved
electrically insulated mat. (3) Do not touch the enclosure or
components inside the enclosure. (4) Be prepared for the
system to operate automatically.
(600 volts and under)
4.3.1
Controller Power Supply
The controller power board converts AC line voltage to
DC voltage for the logic board. Line voltage or DC
voltage from an external battery connected through an
External Battery Supply Module (EBSM) will cause
LED1 on the controller’s power board to light.
See
Figure 4-5 for the LED location.
D
If the Normal or Emergency source is available but
the controller display is dark, check LED1 on the
controller power board. LED1 lights when voltage is
available for the logic board.
D
If the transfer switch is equipped with an EBSM,
disconnect the I/O module assembly at connector
P16 on the controller to remove the external battery
supply.
Then check LED1 with the Normal or
Emergency source available.
D
If LED1 lights but the controller display is dark, check
the ribbon cable connections between the controller’s
power board and logic board and from the logic board
to the display.
D
If LED1 does not light when the Normal or Emergency
source is available, check for line voltage to the
controller using the following procedure:
Check for Line Voltage to the Controller
1. Disconnect power to the transfer switch by opening
circuit breakers or switches.
2. Disconnect the transfer switch wiring harness from
the controller at the 24-pin connector.
3. Reapply power to the transfer switch.
4. Check for voltage across the wiring harness pins.
Observe all Safety Precautions when checking the
voltage.
a. If Source N is available, check for line voltage
across pins 4 and 12 of the transfer switch
wiring harness connector.
b. If Source E is powering the transfer switch,
check for line voltage across pins 6 and 7 of the
connector.
If there is no power to the pins checked in step 4, check
the wiring harness continuity. Replace the harness if
necessary.
If there is power to the pins checked in step 4 but LED1
on the power board does not light when power is
connected, replace the power board.
Note:
Model KGS/KGP transfer switches use a different
power board than other models with MPAC 1500
controls. Refer to Parts Catalog TP-6433 for the
correct part numbers.
Содержание KGP
Страница 2: ......
Страница 6: ...TP 6461 1 08 6 Notes ...
Страница 10: ...TP 6461 1 08 10 Safety Precautions and Instructions Notes ...
Страница 22: ...TP 6461 1 08 22 Section 1 Scheduled Maintenance Notes ...
Страница 36: ...TP 6461 1 08 36 Section 2 Controller Troubleshooting Notes ...
Страница 54: ...TP 6461 1 08 54 Section 3 Transfer Switch Troubleshooting Notes ...
Страница 78: ...TP 6461 1 08 78 Section 4 Controller Test and Replacement Notes ...
Страница 86: ...TP 6461 1 08 86 Section 5 Component Replacement Model KGS KGP Notes ...
Страница 100: ...TP 6461 1 08 100 Section 6 Component Replacement Model KSS Switches Notes ...
Страница 125: ......