Always check unit before applying power (see Sections 6-1 thru 6-18).
TM-229 409 Page 43
Extreme 360
Section 6-26. Control/Auxiliary Power Board PC1 Test Point Values (Continued)
RC9
1
Output
Do not measure
−
Test point, used to test board only
2
Output
Do not measure
−
Test point, used to test board only
3
Input
Do not measure
−
Weld output current sensor signal
4
Output
+15 volts dc power to current sensor
5
Output
−
15 volts dc power to current sensor
6
GND
Weld output current sensor signal common
RC10
1
Output
115 volts ac rms with respect to GND; power feed to fan
2
Output
Fan power return; measure with respect to RC10
−
1, 115 volts ac rms = fan on, 0 volts ac rms = fan off
3
Output
Do not measure
−
Test point, used to test board only
4
Output
Do not measure
−
Test point, used to test board only
RC11
1
Output
+24 volts output to boost relay coil
2
Boost relay coil return; +24 volts dc = relay contacts open, 0 volts dc = relay contacts closed
3
Output
+24 volts output to gas valve coil
4
Gas valve coil return; +24 volts dc = valve closed (no gas flow), 0 volts dc = valve open
RC12
1
Not Used
2
Input
34 volts ac rms; measure with respect to RC12 pin 4, power supply used to 24/
−
24 volts dc
3
Chassis Power source chassis; circuit common (GND) on this pin bonded to chassis thru wire
4
Input
34 volts ac rms; measure with respect to RC12 pin 2, power supply used to 24/
−
24 volts dc
5
Not Used
6
Input
Center tap of 34 volt ac connected to circuit common (GND) on board
7
Not Used
8
Input
115 volts ac rms
Notes
OHM’S LAW
VOLTAGE =
CURRENT X RESISTANCE
CURRENT = VOLTAGE
RESISTANCE
RESISTANCE = VOLTAGE
CURRENT
Содержание EXTREME 360
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