YASKAWA E-V-MD Series User Manual page 278

10 Maintenance, Inspections, and Troubleshooting
10.3.2 Troubleshooting of Warnings
Warning
Number:
Warning Name
(Warning
Description)
A.960
MECHATROLINK
Communications
Warning
A.97A
Command
Warning 7
(Phase Error)
A.97B
Data Clamp
(Out Of Range)
A.9A0:
Overtravel
(Overtravel status
is detected.)
10-18
Cause
MECHATROLINK
Confirm the wiring.
wiring is incorrect.
MECHATROLINK
data reception error
Confirm the installation conditions.
occurred due to noise
interference.
A command that cannot
be executed in the cur- –
rent phase was sent.
The set command data
was clamped to a mini-
mum or maximum –
value out of the allow-
able setting range.
When the servomotor Check the input signal monitor to
power is ON, over- check the status of the overtravel sig-
travel status is detected. nals.
Investigative Actions
(cont'd)
Corrective Actions
Correct the MECHATROLINK wir-
ing.
Take measures against noise. Check
the MECHATROLINK communica-
tions cable and FG wiring and take
measures such as adding ferrite core
on the MECHATROLINK communi-
cations cable.
Send a command after command
sending condition is satisfied.
Set the value of the command data
within the allowable range.
Refer to 10.4 Troubleshooting Mal-
function Based on Operation and
Conditions of the Servomotor. Even if
overtravel signals were not shown by
the input signal monitor, momentary
overtravel may have been detected.
Take the following precautions.
• Do not specify movements that
would cause overtravel from the
host controller.
• Check the wiring of the overtravel
signals.
• Take countermeasures for noise.