292
Output Units
Symptom
Possible cause
Correction
All Outputs do not turn ON.
Power is not supplied to loads.
Supply power.
p
pp
Raise supply voltage.
Terminal screws are loose.
Tighten terminal screws.
Faulty contact of terminal block
connector
Replace terminal block connector.
Fuse is blown.
Replace fuse.
Faulty contact of I/O bus connector
Replace defective Unit.
Output circuit is defective.
Replace defective Unit.
All Outputs do not turn OFF.
Output circuit is defective.
Replace defective Unit.
One output does not turn ON, and
i di
t
d
t li ht
Output ON-time is too short.
Correct the program.
p
indicator does not light.
The same output bit is control by two
different instructions (duplication).
Correct the program.
Output circuit is defective.
Replace defective Unit.
One output does not turn ON, but
i di
t
i lit
Output device is defective.
Replace output device.
p
indicator is lit.
Output wiring is broken.
Check output wiring.
Terminal screws are loose.
Tighten terminal screws.
Faulty contact of terminal block
connector
Replace terminal block connector.
Output relay is defective.
Replace defective relay.
Output circuit is defective.
Replace defective Unit.
One output does not turn OFF, but
i di
t
d
t li ht
Output relay is defective.
Replace defective relay.
p
indicator does not light.
Leakage current, or residual voltage
Replace external load or add dummy
resistor.
One output does not turn OFF, and
indicator is lit.
The same output bit is control by two
different instructions (duplication).
Correct the program.
Output circuit is defective.
Replace defective Unit.
Outputs turn ON and OFF irregularly.
Supply voltage for external load is low.
Raise external supply voltage.
p
g
y
The same output bit is control by two
different instructions (duplication).
Correct the program.
Malfunction due to noise
Countermeasures against noise;
Install surge suppressor.
Install insulating transformer.
Wire with shielded cable.
Terminal screws are loose.
Tighten terminal screws.
Faulty contact of terminal block
connector
Replace terminal block connector.
Abnormal output points are in groups
f 8
Common terminal screws are loose.
Tighten common terminal screws.
p
p
g
p
of 8.
Faulty contact of terminal block
connector.
Replace terminal block connector.
Fuse is blown.
Replace fuse.
Data bus is faulty.
Replace CPU.
CPU is defective.
p
Output indicator does not light.
Indicator is defective.
Replace defective Unit.
Troubleshooting
Section 8-6
Содержание SYSMAC C1000H
Страница 1: ...Cat No W140 E1 04 Programmable Controllers SYSMAC C1000H C2000H...
Страница 2: ...C1000H C2000H Programmable Controllers Operation Manual Revised May 2003...
Страница 3: ...iv...
Страница 5: ...vi...
Страница 395: ...Cat No W140 E1 04 Note Specifications subject to change without notice Printed in Japan Authorized Distributor...
Страница 396: ...Cat No W140 E1 04 SYSMAC C1000H C2000H Programmable Controllers OPERATION MANUAL...