Entron EN1000 series

Page 132 • 700120S • ENTRON Controls, LLC.
REMEDY
1a) Check that valve supply voltage is
not varying below tolerance, -15%.
1b) Check if valve coil is proper voltage.
1c) Insufficient air pressure.
1d) Loose connections in valve wiring.
2. Replace board with another
board stamped with same A/N.
3. Replace board. See Wiring
Diagram for correct A/N.
1a) Check both for proper operation
and/or loose wires on NW1 & GND.
1b) If no external Weld/No Weld
Switch is used, put jumper
across NW1 & GND.
2. Connect H1 and H2 to lugs in
the control.
3. Check corroded or open
connections. Be sure welding
electrodes close on work.
4. Replace board. See Wiring
Diagram for correct A/N.
5. Replace board with another
board stamped with same A/N.
6. Check for missing phase.
1. KVA demand for welding
transformer too high for input
power line. Check line voltage.
2. Check air system regulator.
3. Increase WELD count duration.
4. Properly dress tips.
1. Increase PERCENT CURRENT.
2.
Select correct electrode face diameter.
1. Check air supply and accessories.
2. Reduce WELD count duration.
3. Decrease PERCENT CURRENT.
4. Dress or replace tip with proper size.
1. Check air supply and accessories.
2. Check welding fixtures setup or
electrode alignment.
3. Check parts for proper fit-up.
4. Work should be free from
excessive dirt, paint and oxides.
5. Check all terminal and/or lug
connections inside the cabinet.
TROUBLE
Control initiates and
sequences properly,
but solenoid valve
chatters.
Control sequences
but will not weld.
Weld too cool.
Weld too small.
“HOT” Welds
Inconsistent Welds
POSSIBLE CAUSE
1. Solenoid valve coil.
2. Defective Control/Display PCB.
3. Defective Terminal Strip/Firing
Board.
1. External Weld/No Weld Switch
or WELD/NO WELD switch on
Front Panel of control.
2. Welding transformer not
connected.
3. Welding transformer secondary
open.
4. Defective Terminal Strip/Firing
PCB.
5. Defective Control/Display PCB.
6. Excessive ripple in secondary.
1. Line voltage drop.
2. Excessive pressure at electrodes.
3. WELD count too short.
4. Excessive tip “mushrooming”.
1. PERCENT CURRENT too low.
2. Electrode face too small.
1. Insufficient air pressure.
2. WELD count set too high.
3. PERCENT CURRENT set too high.
4. Electrode diameter too small.
1. Varying air pressure.
2. Work not square with electrodes.
3. Poor part fit-up.
4. Dirty material to be welded.
5. Loose connection.
11.2 TROUBLESHOOTING (cont.)