E D R O
D
y n a
W
a s h
®
T
h r e e
P
o c k e T
W
a s h e r
- e
x T r a c T o r s
68
SYMPTOM
PROBABLE CAUSE
Z. Multiple X inputs or Y outputs are not
functioning.
Ensure the green plugs are fully seated.
If non functional signals appear to be in the same
plug, check the common to that plug. X inputs are
24VDC and are labeled 20B. Y outputs are 24VAC
and are labeled 20.
AA. Communication on Communication Port 2.
COM plug not fully seated. Check for tightness.
Disconnected wire in the communication. Check
for disconnected wire on the PLC side of the cable.
Verify correct voltage terminals on transformer.
AB. No power to PLC (Green power light not on) Check for 220VAC power to the power supply.
Check the power plug from the power supply to the
PLC.
Remove the 24VDC and 0VDC wires from the
power supply and repower washer. If there is now
power to the PLC, there is a short in the 24VDC
circuit. Troubleshoot to identify location.
See ALARMS AND WARNINGS for listing of machine failure conditions
.
TROUBLESHOOTING GUIDE - CONTINUED
