TM-273245 Page 43
S-74 MPa Plus
9-10. 14 Pin Filter Board PC5 Test Point Values
a) Tolerance
−
±
10% unless specified
b) Triggered
−
means when gun trigger is
pressed
c) Reference RC5
−
2 for AC Circuit Common
−
unless noted otherwise
Reference RC3
−
3 for DC Circuit Common
−
unless noted otherwise
d) Note
−
15 VDC measurements will be closer
to 14 V
e) Process Select voltage measurement use
PC1 RC4
−
5 to RC4
−
11
PC5 Voltage Readings
Receptacle
Pin
Value
RC1
1
Chassis ground
RC28
1
Reed
−
2
Reed +
3
Flow
−
4
Flow +
RC30
1
14 Pin E Command 0
−
10 volts DC reference to RC30
−
5
2
14 pin L wire feed speed command 0
−
10 volts DC reference to RC30
−
4
3
14 Pin M wire feed speed mode (Process Select) 3.5 volts DC in MIG, 2.5 volts DC in pulse reference to
RC30
−
4
4
14 Pin N wire feed speed common
5
14 pin D Power Source Common
6
14 pin H Voltage Feedback 1V/10V reference to RC30
−
5
7
14 pin F Current Feedback 1V/100A reference to RC30
−
5
8
14 pin B Contactor 24 volts AC reference RC32
−
2
9
Not used
10
14 Pin C 10 volts DC reference to 14 pin D
RC31
1
14 Pin A 24 volts AC reference to RC31
−
2
2
14 Pin G 24 volts AC Circuit Common
3
Not used
RC32
1
24 volts AC In 14 Pin A reference to RC32
−
2
2
24 volts AC Circuit Common 14 Pin G
RC33
1
Voltage Feedback 1V/10V
2
Current Feedback 1V/100A
3
Command
4
Wire feed speed command 0
−
10 volts DC reference to RC30
−
5
5
Process Select Mig 3.5 volts Pulse 2.5 volts
6
Contactor 24 VAC reference RC31
−
2
7
Not used
8
Reed & Flow common
9
Reed
10
Flow
11
Common
12
Wire feed speed common