IAI EYECYLINDER EC-B6 Series, Instruction Manual, Page: 133 / 204

7.3 Troubleshooting with no alarm generated
7-7
7.
Troubleshooting
[Condition 3] The unit does not operate even when a command
is sent from a master device such as a PLC
No.
Possible cause
Confirmation/countermeasure
1 I/O signal communication is not established ● Check the input/output status of the I/O signal
with the monitoring function of the teaching
tool. (both the master device and the
ELECYLINDER)
● Make sure the I/O signal voltage is normal.
● Check whether the length of the I/O signal
cable is within 10m, and whether the wire
diameter is thinner than the applicable value.
● Make sure the wiring processing is correct.
→For details, refer to "3.4/3.5 Wiring
connections".
2 Disconnection of power I/O cable,
disconnection or contact failure of power
I/O connector ● Check whether the cable is
disconnected/partially disconnected.
● Make sure that the connector and cable are not
pulled out.
→For details, refer to "3.4/3.5 Wiring
connections".
3 Movement command issued to stopping
position
→When stopping at "Forward end", check
the ladder sequence by sending a
"Forward" command etc.
Check the ladder sequence and the setting of
the forward end/backward end.
4 Edge signals are input to "Forward" and
"Backward". Check the ladder sequence and input level
signals.
* For details on I/O signals, refer to "4.4 I/O signals".