Omron OMNUC G User Manual page 396

8-3 Troubleshooting
Alarm
code
37 Parameter corruption
Drive prohibit input
38
8
Absolute encoder
system down error
40
Absolute encoder
counter overflow error
41
Absolute encoder
overspeed error
42
Absolute encoder
one-turn counter error
44
Absolute encoder
multi-turn counter
45
8-11
Alarm Name
The EEPROM write verification data
was corrupted when the data was read
from the EEPROM at power-ON.
1 The Drive Prohibit Input Selection
(Pn004) is set to 0, and both
Forward and Reverse Drive
Prohibit Inputs (POT and NOT)
became OPEN.
2 The Drive Prohibit Input Selection
(Pn004) is set to 2, and either
Forward or Reverse Drive Prohibit
Input (POT or NOT) became
OPEN.
3 With the Drive Prohibit Input
Selection (Pn004) set to 0,
MECHATROLINK-II
error
communications interrupted, and
either Forward or Reverse Drive
Prohibit Input (POT or NOT) turned
ON, an operation command (jog
operation or normal mode
autotuning) was received via
RS232. Or, either POT or NOT
turned ON while operating on an
operation command received via
RS232.
The power supply and battery voltage
to the encoder dropped, and the
capacitor voltage dropped below the
specified value. (3.0 V or less)
ABS
The multi-turn counter of the encoder
exceeded the specified value.
ABS
The Servomotor rotation speed ex-
ceeded the specified value when
power to the absolute encoder is
supplied by the battery only during a
ABS
power outage.
An error was detected in the one-turn
counter for the encoder.
ABS
An error was detected in the multi-turn
counter for the encoder.
error
ABS
Cause
If the warning continues to occur even
after retransferring all parameters, the
Servo Drive may have failed.
Replace the Servo Drive.
Check the sensors, power supply, and
wiring for the Forward and Reverse
Drive Prohibit Inputs.
Also check that the response of the
power supply (12 to 24 VDC) is not too
slow.
Check that there is no command input
in the direction of the Drive Prohibit In-
put.
Connect the power supply for the
battery, and clear the absolute encod-
er. Refer to Absolute Encoder Setup on
page 6-6.
Initial setup of the absolute encoder
must be performed to clear the alarm.
Check the setting for the Operation
Switch When Using Absolute Encoder
(Pn00B).
Set the travel distance from the me-
chanical origin within 32767 rotations.
Initial setup of the absolute encoder
must be performed to clear the alarm.
Check the power supply voltage on the
encoder side (5 V
Check the connection of the CN2
connector.
Initial setup of the absolute encoder
must be performed to clear the alarm.
Replace the Servomotor.
Check for malfunction due to noise.
Also take EMC measures.
Initial setup of the absolute encoder
must be performed to clear the alarm.
Replace the Servomotor.
Check for malfunction due to noise.
Also take EMC measures.
Initial setup of the absolute encoder
must be performed to clear the alarm.
Countermeasure
±
5%).