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6. Troubleshooting
6 - 17
Alarm No.
2B
Motor side detector, CPU error 1
A CPU initial error was detected with the motor end detector.
Investigation details Investigation results Remedies SV SP
No abnormality is found in particular. Replace the detector.
(With the absolute position system,
the zero point must be established.)
1 Check if there is any abnormality in
the detector's ambient environment.
(Ex. Ambient temperature, noise,
grounding)
An abnormality was found in the
ambient environment.
Take remedies according to the
causes of the abnormality.
Ex. High temperature:
Check the cooling fan.
Incomplete grounding:
Additionally ground.
{
Alarm No.
2C
Motor side detector, EEPROM/LED error
Deterioration of the LEDs was detected with the motor end detector.
Investigation details Investigation results Remedies SV SP
1 Check the alarm No. "2B" items.
{
Alarm No.
2D
Motor side detector, data error
A data error was detected with the motor end detector.
Investigation details Investigation results Remedies SV SP
1 Check the alarm No. "2B" items.
{
Alarm No.
2F
Motor side detector, communication error
A communication data error was detected with the motor end detector. Or, communication was cut off.
Investigation details Investigation results Remedies SV SP
The connector is disconnected (or
loose).
Correctly install. 1 Check whether the drive unit
connectors (CN2) or detector
connectors are disconnected.
The connector is not disconnected. Investigate item 2.
{
The cables are wired near each
other. (Noise is entering from the
power cable.)
Improve the cable wiring. 2 Is the detector cable wired in the
same conduit as the motor's power
cable or are the two cables laid in
parallel near each other?
The wires are sufficiently separated. Investigate item 3.
{
The motor FG wire is grounded on
the motor side.
Connect together on the drive unit
side.
3 Is the motor FG wire connected only
to the drive unit which drives it?
(Is the motor grounded to one point?)
The motor is grounded to one point. Investigate item 4.
{
There is a connection fault. Replace the detector cable. 4 Turn the power OFF, and check the
detector cable connection with a
tester. (Is the cable shielded?)
The connection is normal. Investigate item 5.
{
The alarm is on the drive unit side. Replace the drive unit. 5 Connect to another normal axis drive
unit, and check whether the fault is
on the drive unit side or detector side.
The alarm is on the detector side. Investigate item 6.
{
No abnormality is found in particular. Replace the detector.
(With the absolute position system,
the zero point must be established.)
6 Check if there is any abnormality in
the detector's ambient environment.
(Ex. Ambient temperature, noise,
grounding)
An abnormality was found in the
ambient environment.
Take remedies according to the
causes of the abnormality.
Ex. High temperature:
Check the cooling fan.
Incomplete grounding:
Additionally ground.
{