Mitsubishi Electric M700VS Series Setup Manual page 629

MITSUBISHI CNC
Appendix 2 Explanation of Alarms
Sub side detector: Communication error
Alarm No.
An error was detected in communication data with the linear scale or the ball screw side detector. Or the
1F
communication was interrupted.
Investigation details
Jiggle the detector connectors (drive
1 unit side and detector side) and check
if they are disconnected.
Is the detector cable wired in the same
conduit as the motor's power cable, or
2
are the two cables laid in parallel near
each other?
Is the motor FG wire connected only to
3 the drive unit which drives it?
(Is the motor grounded to one point?)
Turn the power OFF, and check the
4 detector cable connection with a
tester. (Is the cable shielded?)
Replace with another unit, and check
5 whether the fault is on the unit side or
detector side.
Check if there is any abnormality in the
detector's ambient environment.
6
(Ex. Ambient temperature, noise,
grounding)
Sub side detector: No signal2
Alarm No.
When an excessive error alarm occurred, no signal from the machine side detector was detected.
21
An error was detected in the ABZ-phase in the full closed loop control system.
Investigation details
Check the servo parameter (SV025.
pen:machine side detector), and
spindle parameter (SP019) setting
1 value.
Are the pulse type detector
parameters set for a serial
communication type detector?
Jiggle the detector connectors (drive
2 unit side and detector side) and check
if they are disconnected.
Turn the power OFF, and check the
3 detector cable connection with a
tester.
Replace with another unit, and check
4 whether the fault is on the unit side or
detector side.
Check if there is any abnormality in the
detector's ambient environment.
5
(Ex. Ambient temperature, noise,
grounding)
612
Investigation results
The connector is disconnected (or
loose).
The connector is not disconnected.
The cables are wired near each other.
(Noise is entering from the power
cable.)
The wires are sufficiently separated.
The motor FG wire is grounded on the
motor side.
The motor is grounded to one point.
The connection is faulty.
The connection is normal.
The alarm is on the drive unit side.
The alarm is on the detector side.
Take remedies according to the causes of the abnormality in the ambient
environment.
Investigation results
The value is not set correctly.
The value is set correctly.
The connector is disconnected (or
loose).
The connector is not disconnected.
The connection is faulty.
The connection is normal.
The alarm is on the drive unit side.
The alarm is on the detector side.
Take remedies according to the causes of the abnormality in the ambient
environment.
Remedies
Correctly install.
Check the investigation item No. 2.
Wire the detector cable away from the
power cable.
Shield the power cable.
Check the investigation item No. 3.
Ground the motor to one point,
connecting the wires together on the
drive unit side.
Check the investigation item No. 4.
Replace the detector cable.
Check the investigation item No. 5.
Replace the drive unit.
Check the investigation item No. 6.
Remedies
Correctly set SV025.pen for the servo
and SP019 for the spindle (including
SP097 for pulse type).
Check the investigation item No. 3.
Correctly install.
Check the investigation item No. 4.
Replace the detector cable.
Check the investigation item No. 5.
Replace the drive unit.
Replace the detector.
SV SP
SV SP