List Of Unit Protection Functions; List Of Alarms - Mitsubishi Electric MELDAS MDS-R Series Technical Specification And Instruction Manual

10-3 List of unit protection functions

10-3-1 List of alarms

When an alarm occurs, the servo drive unit will make the motor stop by the deceleration control or
dynamic brake. The spindle drive unit will coast to a stop or will decelerate to a stop. At the same time,
the alarm No. will appear on the NC monitor screen and with the LEDs on the front of the drive unit.
Check the alarm No., and remove the cause of the alarm by following this list.
No. Alarm name
10 Insufficient voltage
11 Axis selection error
12 Memory error 1
13 Software processing error 1
14 Software processing error 2
17 A/D converter error
18 Motor side detector:
Initial communication error
21 No signal 2
24 Grounding
25 Absolute position data lost
26 Unused axis error
2B Motor side detector:
CPU error 1
2C Motor side detector:
EEPROM/LED error
2D Motor side detector:
Data error
2F Motor side detector:
Communication error
30 Over regeneration
31 Overspeed
32 Power module overcurrent
33 Overvoltage
34 NC-DRV communication:
CRC error
35 NC command error
36 NC-DRV communication:
Communication error
37 Initial parameter error
38 NC-DRV communication:
Protocol error 1
39 NC-DRV communication:
Protocol error 2
3A Overcurrent
3B Power module overheat
3C Regeneration circuit error
45 Fan stop
46 Motor overheat
10. Troubleshooting
Alarm details
Insufficient PN bus voltage was detected in main circuit.
Setting of the axis No. selection switch is incorrect.
A CPU error or an internal memory error was detected during
the power ON self-check.
Software processing has not finished within the specified time. Dynamic brakes
Software processing has not finished within the specified time. Dynamic brakes
An error was detected in the A/D converter for detecting current
FB.
Initial communication with the motor side detector failed.
In the full-closed loop system, an error was detected in ABZ
phase.
The motor power cable is in contact with FG (Frame Ground).
The absolute position was lost, as the backup battery voltage
dropped in the absolute position detector.
A power module error occurred in the axis whose axis No.
selection switch was set to "F"(free axis).
An CPU initial error was detected in the motor side detector.
The LED deterioration was detected in the motor side detector. Dynamic brakes
A data error was detected in the motor side detector.
An error was detected in communication with the motor side
detector. Or, the communication was interrupted.
Over-regeneration detection level became over 100%. The
regenerative resistor is overloaded.
The motor was detected to rotate at a speed exceeding the
allowable speed.
Overcurrent protection function in the power module has started
its operation.
PN bus voltage in main circuit exceeded the allowable value.
An error was detected in the data received from the CNC.
The travel command data that was received from the CNC was
excessive.
The communication with the CNC was interrupted.
An incorrect parameter was detected among the parameters
received from the CNC at the power ON.
An error was detected in the communication frames received
from the CNC.
An error was detected in the axis information data received from
the CNC.
Excessive current was detected in the motor drive current.
Thermal protection function in the power module has started its
operation.
An error was detected in the regenerative transistor or in the
regenerative resistor.
A cooling fan built in the drive unit stopped, and the loads on the
unit exceeded the specified value.
Thermal protection function of the motor or in the detector, has
started its operation.
10 - 4
Stopping method Reset
PR
Dynamic brakes
AR
Initial error
AR
Initial error
PR
PR
PR
Dynamic brakes
PR
Initial error
PR
Dynamic brakes
PR
AR
Initial error
PR
Dynamic brakes
PR
Initial error
PR
PR
Dynamic brakes
PR
Dynamic brakes
PR
Dynamic brakes
PR
Dynamic brakes
PR
Dynamic brakes
PR
Dynamic brakes
Deceleration control PR
Deceleration control PR
Deceleration control PR
PR
Initial error
PR
Deceleration control
PR
Deceleration control
PR
Dynamic brakes
PR
Dynamic brakes
AR
Dynamic brakes
NR
Deceleration control
NR
Deceleration control