cutmaster 102
SERVICE 5-12 Manual 0-4998
This completes the CNC Interface Test. If the above are all
correct then the unit is functioning correctly. If the unit
does not function as stated, then note the symptom and
proceed to Section "5.10, CNC Interface Problems".
5.07 Main Input and Internal Power
Problems
A. Primary input line fuse blows as soon as
primary disconnect is closed.
1. Primary input cable installed incorrectly.
a) Check wiring of primary power cable to the
contactor. See illustration below.
2. W1 jumpers installed incorrectly
a) Check jumper installation for correct phase
being used.
Art # A-08493
Input Power Cable Connections
Three-Phase (3ø)
Store copper jumpers on base plate
Single-Phase (1ø) and Jumper Settings
GND
L1
L2
L3
L4
GND
L1
L2
L3
L4
Single and Three Phase Input Power Wiring
3 W1 contactor points are stuck closed
a) Check per section 5.11A
4. Primary plug not wired correctly.
a) Check manufacturer's plug installation instruc-
tions.
5. Primary input cable is defective.
a) Check cable for shorts.
B. Primary line fuses blow immediately after
ON/OFF SWITCH (SW1) is turned to ON
position.
1. Shorted Input Diode Module
a) Check per section 5.11B and 5.11C
2. Shorted Input Capacitor PCB 2
a) Check per section 5.11D
C. Gas flows with ON/OFF SWITCH in OFF
position
1. Foreign debris has lodged in gas solenoid.
a) Replace gas solenoid. This is a problem caused
by improperly filtered air supply. Customer
needs to add filtration to air supply prior to
unit inlet.
D. All front panel indicators are off, Fan MOT1
never turns on. Main Contactor W1 does
not close.
1. Primary power not connected.
a) Check that cable is connected to primary
power.
2. Primary line fuse/breaker is blown/tripped.
a) Replace fuse or reset breaker.
3. Defective ON/OFF SWITCH
a) Check continuity
4. Defective Main PCB 1
a) Measure Main Pcb power supply voltages at
the following test points
GND1 to +12V = 12VDC
GND1 to +48V = 48 VDC
Replace Main Pcb if not correct
5. Defective Ribbon Cable
a) Check continuity
6. Defective Logic
a) Replace Logic PCB 3
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