Tweco N7500 - Manual (Page 52)

TROUBLESHOOTING GUIDE 8-4 Manual 89250890
N7500 TROUBLESHOOTING GUIDE
8.04 Remote Pendant
PENDANT CABLE
PIN COLOR LOCATION
A WHT (#1) PIN A
B BK (#1) PIN B
C BK (#2) PIN C
D NOT USED PIN D
E WHT (no #) PIN E
F WHT (#2) PIN F
G NOT USED PIN G
Table 8-4: Pendant Cable Pin Identification
Remote Pendant
Problem Possible Cause Possible Remedy
Remote Pen-
dant has no
power
Pendant Cable not attached Attach Pendant Cable.
Absence of appropriate power Check power to Control Box.
Tripped ON/OFF Switch circuit
breaker
Turn power OFF, check for and repair fault.
Break in cable which links Control
Box to Remote Pendant
Check cable connections.
Repair/replace cable.
Defective Remote Pendant Replace Remote Pendant.
No Remote
Pendant
display
Pendant Cable not attached Attach Pendant Cable.
Power to Remote Pendant is OFF
Check cable connections.
Repair/replace cable.
Defective Remote Pendant Replace Remote Pendant.
Rotary Dial
does not work
Power to Remote Pendant is OFF
Check cable connections.
Repair/replace cable.
Rotary Dial is loose Tighten set screw on Rotary Dial.
“No-Current
Detect” shut
down
No Current Detect setting is OFF
Change Remote Pendant No Current Detect program-
ming to ‘Normal’ or ‘Special‘. See page 5-7 for
instructions.
Power supply and N7500 not on
same CC/CV setting
Reset both to the same CC or CV setting.
Arc Current not reporting
Check signal wire for continuity, min wire size, clamp
and connections at work piece and Control Box.
Mode Selector
button(s) on
Pendant do
not respond to
touch
Defective Remote Pendant Replace Remote Pendant.
Table 8-5: Remote Pendant Troubleshooting