Mitsubishi Electric C70, Руководство по установке

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C70 Setup Manual
Appendix 2.16 Troubleshooting
569
Alarm No.
3C
Regeneration circuit error:
An error was detected in the regenerative transistor or in the regenerative resistor.
Investigation details Investigation results Remedies SV SP
1
Check if an external regenerative resistor is
used. An external regenerative resistor is used. Check the investigation item No. 3.
A built-in regenerative resistor is used. Check the investigation item No. 2.
2
Is the short wire connected between P and
D terminal?
Are there any problems with the connection
condition? (looseness of the screw)
The wire is not connected. Connect the wire.
The connector is disconnected.
The connector has a contact fault. Reconnect the connector.
Replace the connector.
The connection is correct. Replace the drive unit.
3
Is the connection of the regenerative
resistor or regeneration resistor cable
correct? The wire is not connected. Connect the wire.
The connection is correct. Check the investigation item No. 4.
4
Is the regeneration resistor or the
regeneration resistor cable broken?
Disconnect the regenerative resistor
terminal and check the resistance value with
a tester.
The regeneration resistor is broken.
Or the resistance value is different from the
specified value.
Replace the regenerative resistor.
The regeneration resistor cable is broken. Replace the cable.
The resistance value is normal. Replace the drive unit.
Alarm No.
3D
Power supply voltage error at acceleration/deceleration:
A motor control error was detected at acceleration/deceleration due to an input voltage drop.
Investigation details Investigation results Remedies SV SP
1
Measure the input voltage during operations
with a tester.
During operations, the voltage fluctuates
widely.
Increase the power capacity (KVA).
-
During operations, the voltage is stable. Check the investigation item No. 2.
2 Check the load inertia.
The load inertia (workpiece etc.) is
excessive.
[1] Lower the load inertia.
[2] Extend the rapid traverse time constant
for G0/G1.
-
The load inertia is normal. Replace the drive unit.
Alarm No.
3E
Magnetic pole position detection error:
The magnetic pole position is not reliable in the magnetic pole position detection control.
This alarm occurs at the detection level which is set in SV094.
Investigation details Investigation results Remedies SV SP
1
Adjust the setting value of the servo
parameter SV094 and detect the magnetic
pole position. Set SV094.
Set SV094.
The standard value for a rotary motor is 100.
The standard value for a linear motor is 10.
-
SV094 is set.
Set the optimal value allowing for the
coasting distance (Increase the value).
Alarm No.
41
Feedback error 3
Either a missed feedback pulse in the main side incremental detector or an error in the Z-phase was detected in the full
closed loop system. In the servo, Z-phase was not detected by a rotary detector within 2 rotations.
Investigation details Investigation results Remedies SV SP
1
Check the connection condition of the cable
and detector.
- Check if the cable is disconnected.
The cable is disconnected. Replace the cable.
The cable is normal.
Check for dirt on the connector terminal and
reconnect it.
The alarm occurs even after it is
reconnected.
Replace the detector.
Alarm No.
42
Feedback error 1
An error was detected in the sub side detector (feedback signals of the position detector in a servo system, or PLG's
feedback signals in a spindle system).
Investigation details Investigation results Remedies SV SP
1 Check SP019 and SP020.
Parameter is set incorrectly. Correctly set.
Parameter is set correctly. Check the investigation item No. 2.
2 Check the alarm No. "2C" items.