Entron EN1000 series

ENTRON Controls, LLC. • 700120S • Page 131
11.2 TROUBLESHOOTING
Please refer to other manual pages and Wiring Diagrams for location of fuses, terminal strips, etc.
It is very easy to press a SCHEDULE push button and select a different schedule accidentally.
This causes no problem when initiating on FS7 or FS11. However, when initiating on FS3,
always verify that the schedule to be initiated is displayed prior to initiation. Conversely when
the default setting of
S.S.S.S.
S.S.S.S.
S.S.=
0000
0000
00 is used, FS7 and FS11 will select schedule 10 and 20 respectively.
The control may display any schedule at any time. Foot switch (FS) connections and EXTENDED
FUNCTION
S.S.S.S.
S.S.S.S.
S.S. determine which schedule will be executed. Use care when programming to
be sure operating parameters are stored in the schedule to be initiated.
REMEDY
1. Check that control is being
powered by all phases.
2. Replace Circuit Breaker.
3. Replace Control Board.
1. Replace switch(es).
2. Check for loose or broken
wire(s) at initiation switch(es)
and at Terminal Strip (FS1, FS2,
etc.).
3. Check valve solenoid coil.
4. Replace board with another
board stamped with same A/N.
1. Check terminals VL1, SV1 and
SV2, and associated wiring (see
Wiring Diagram).
2a) Check pressure.
2b) Repair or replace air accessories.
1. Check Pilot switch wiring.
2. Check for proper operation of
Pilot switch. Be sure First Stage
closes before Second Stage.
3. Replace board with another
board stamped with same A/N.
1a) Check for defective or
malfunctioning Pressure Switch
connected to PS1 & GND.
1b) If no Pressure Switch is used,
jumper PS1 & GND.
2. Replace board with another
board stamped with same A/N.
TROUBLE
Power Switch ON
but no display.
Control will not
initiate.
Control initiates,
valve light comes
on, but electrodes do
not close.
Control does not
initiate, but welder
head or arms close.
Control initiates, but
stays in SQUEEZE.
POSSIBLE CAUSE
1. Fuse F1 control fuse blown.
2. Defective Circuit Breaker.
3. Defective Control Board.
1. Initiation switch(es) defective.
2. Loose or broken wire(s) at
initiation switch(es).
3. Fuses F6 - F8 valve fuses blown.
4. Defective Control/Display or
Terminal Strip/Firing PCB.
1. Solenoid valve circuit mis-wired
or broken wires.
2. Hydraulic (or air) line blocked.
1. Mis-wired for Single Stage
operation.
2. Second Stage Pilot switch open.
3. Defective Control/Display or
Terminal Strip/Firing PCB.
1. Pressure Switch not closing.
2. Defective Control/Display or
Terminal Strip/Firing PCB.