Omron SYSMAC C200H, Installation Manual

Page: 97 / 230

83
6-7 Output Units
Error Probable cause Possible correction
No outputs turn ON.
A load power supply is not provided. Provide the power supply.
p
The load power supply voltage is low. Provide the rated voltage.
Terminal screws are loose. Tighten the terminal screws.
Terminal block connectors are making
poor contact. Securely lock the connectors, or
replace them if necessary.
A fuse is blown. Replace the fuse.
I/O bus connectors are making poor
contact. Replace the Unit.
The output circuit is defective. Replace the Unit.
Outputs all fail to turn OFF. The output circuit is defective. Replace the Unit.
Indicators do not light, and the outputs
for particular Relay numbers do not
turn ON. The output ON time is too short. Correct the program.
The output circuit is defective. Replace the Unit.
The program’s OUT instruction bit
addresses overlap. Correct the program.
Indicators light, but the outputs for
i l R l b d
An output device is defective. Replace the output device. g , p
particular Relay numbers do not turn
ON
Output wiring is disconnected. Check the output wiring.
ON.
Terminal screws are loose. Tighten the terminal screws.
Terminal block connectors are making
poor contact. Securely lock the connectors, or
replace them if necessary.
Output Relays are defective. Replace the Relays.
The output circuit is defective. Replace the Unit.
Indicator lights are off, but the outputs
f
i l R l b d
Output Relays are defective. Replace the Relays.
g , p
for particular Relay numbers do not
turn OFF.
There is faulty restoration due to
leakage current or residual current. Replace the external load or add a
dummy resistor.
Indicators light, and the outputs for
i l R l b d
The output circuit is defective. Replace the Unit. g , p
particular Relay numbers do not turn
OFF.
The program’s OUT instruction bit
addresses overlap. Correct the program.
Outputs are turning ON and OFF
irregularly. The load power supply voltage is low. Supply the rated voltage.
The program’s OUT instruction bit
addresses overlap. Correct the program.
There is malfunctioning due to noise. Apply noise countermeasures such as
installing a surge suppressor,
installing an isolation transformer, and
using shielded cables.
Terminal screws are loose. Tighten the terminal screws.
Terminal block connectors are making
poor contact. Securely lock the connectors, or
replace them if necessary.
Malfunctioning Relays are in groups of
i h
Common terminal screws are loose. Tighten the terminal screws. g y g p
eight.
Terminal block connectors are making
poor contact. Securely lock the connectors, or
replace them if necessary.
A fuse is blown. Replace the fuse.
The CPU is defective. Replace the CPU.
Operation is normal, but the output
indicator does not light. The LED is defective. Replace the Unit.
Output Units Section 6-7