Tweco Merlin 6000 Plasma Cutting CE Slave Power Supply User Manual
Page 39
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Manual 0-2603
A-5
APPENDIX
3
LOGIC CONTROL BOARD
19
9
24
11
18
8
22
12
K2
SWITCH
RECOGNITION
START/STOP (CNC)
D8
START
INDICATOR
CONTACTOR
CONTROL
W
CONTACTOR
D9
J3-9
PWM
ENABLE
CONTACTOR DISABLE
(Only after main con-
tactor initially closes)
SENSE BRIDGE
VOLTAGE
<60VDC
TP1
TP4
To disable
this circuit for troubleshooting
short test points together.
HF AND PILOT
CONTACTOR
CSR Indicator
D10
15 VDC SUPPLY
2
1
28 VAC
CENTER TAP
TORCH VOLTAGE/23
CSR (from Current
Control Board)
TS3
TS1
TS2
ALL PC BOARD INPUTS
ACTIVE LOW EXCEPT
J1-24 AND J1-21.
21
22
OVER-CURRENT SHUTDOWN
(From Switching Control)
REFERENCES J1 CONNECTOR
REFERENCES J3 CONNECTOR
A-01534
D7
RUN
TS4
TS5
W-ON
APPENDIX 5-A: LADDER DIAGRAM - 15 vdc
(Rev AE or Earlier Logic Control PC Board)
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