11-25
11-4 Troubleshooting
OMNUC G5-Series AC Servo Drives Users Manual (Built-in MECHATROLINK-II communications type)
11
Error and Maintenance
86 0 Watchdog data error
An error occurred in the
synchronization data that was
exchanged between the host
controller and Servo Drive every
MECHATROLINK-II communications
cycle.
• Check if there is excessive noise
on the MECHATROLINK-II
communications cable. Review the
routing of the MECHATROLINK-II
communications cable and the FG
wiring. Attach a ferrite core to the
MECHATROLINK-II
communications cable.
•
Transfer the communications
settings and axis settings to the host
controller again.
• Replace the host controller and
Servo Drive.
87 0
Forced alarm input
error
An emergency stop input (STOP) was
input.
Check the emergency stop input
(STOP) wiring.
90
0
Transmission cycle
setting error
The transmission cycle has a setting
error when the MECHATROLINK-II
CONNECT command is received.
• Check if there is a broken
MECHATROLINK-II
communications cable or a wiring
problem.
• Check if the Terminating Resistor
is connected correctly.
• Check if there is excessive noise
on the MECHATROLINK-II
communications cable. Review the
routing of the MECHATROLINK-II
communications cable and the FG
wiring. Attach a ferrite core to the
MECHATROLINK-II
communications cable.
1 CONNECT error
In the standby state for a
MECHATROLINK-II CONNECT
command (PHASE1), a
communications error occurred when
the CONNECT command was
received.
91 0 SYNC command error
During asynchronous
MECHATROLINK-II communications,
a synchronous type of command was
issued.
Check the command that is sent from
the host controller.
92
0
Encoder data
restoration error
Initialization of internal position data
was not processed correctly in semi-
closed control mode and absolute
value mode.
• Provide the required encoder
power supply voltage 5 VDC 5%
(4.75 to 5.25 V). Be careful
especially when the encode cable
is long.
• If the Servomotor cable and the
encoder cable are bundled
together, separate them.
• Connect the shield to FG.
1
External encoder data
restoration error
Initialization of internal position data
was not processed correctly in fully-
closed control mode and absolute
value mode.
• Provide the required external
encoder power supply voltage
5 VDC 5% (4.75 to 5.25 V). Be
careful especially when the
external encoder connection cable
is long.
• If the Servomotor cable and the
external encoder connection cable
are bundled together, separate
them.
• Connect the shield to FG. Refer to
the external encoder connection
diagram.
Alarm
number
Name Cause Measures
Main Sub
To Next Page
Loading...
