Mitsubishi MELDAS MDS-C1 Instruction Manual page 251

Drive unit alarm
No. Alarm name
20 Motor side detector, No signal 1
21 Machine side detector, No signal 2
23 Excessive speed deflection 1
25 Absolute position lost
26 Unusable axis error
27 Machine side detector, CPU error 2
28 Machine side detector, overspeed
29 Machine side detector, absolute
position data error
2A Machine side detector, incremental
position data 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
31 Overspeed
32 Power module overcurrent
34 Communication or CRC error
between NC and drive unit
35 NC command error
36 Communication or transmission
error between NC and drive unit
37 Initial parameter error
38 Communication or protocol error 1
between NC and drive unit
39 Communication or protocol error 2
between NC and drive unit
3A Overcurrent
3B Power module overheat
3D Spindle speed lock
3E Spindle speed overrun
3F Speed excessive deflection 2
(Note 1) Servo (SV) alarm stopping method ...
stopped)
(Note 2) SV indicates an alarm for the MDS-C1-V1/V2 unit, and SP indicates an alarm for the MDS-C1-SP/SPH/SPX/SPHX/SPM
unit.
6. Troubleshooting
SV SP
A PLG Z-phase no signal was detected.
The pulse-type linear scale or ball screw end detector's ABZ-phase no
signal was detected with the servo, or the encoder no-signal was
detected with the spindle.
A difference of 50r/min or more between the speed command and
speed feedback continued for longer than the set time.
The backup voltage in the absolute position detector dropped causing
the absolute position to be lost.
A power module error is occurring with the axis for which the axis No.
selection switch is set to "F" (not used axis).
A CPU error was detected with the linear scale.
A speed exceeding the specified maximum speed was detected with
the linear scale.
An error was detected in the absolute position data detection circuit with
the linear scale.
An error was detected in the relative position data detection circuit with
the linear scale.
A CPU initial error was detected with the motor end detector or linear
scale in the linear servo system.
Deterioration of the LEDs was detected with the motor end detector. Or,
an error in the data stored in the memory was detected with the linear
scale in the linear servo system.
A data error was detected with the motor end detector or linear scale in
the linear servo system.
A communication data error was detected with the motor end detector
or linear scale for the linear servo. Or, communication was cut off.
A rotation speed exceeding the motor's tolerable rotation speed was
detected.
The power module's overcurrent protection function activated.
An error was detected in the data received from the NC.
The movement command data received from the NC was excessive.
Communication from the NC was cut off.
An illegal parameter was detected in the parameters received from the
NC at NC power ON.
An error was detected in the communication frame received from the
NC.
An error was detected in the axis information data received from the
NC.
An excessive current was detected in the motor drive current.
The power module's temperature protection function activated.
Even when the maximum torque was commanded, the motor speed
does not increase to 45r/min or more.
1. A state in which the motor's speed feedback exceeded the speed
command and accelerated was detected.
2. Even though the speed command is 0 (including when stopped
during position control), motor rotation exceeding the parameter
setting value was detected.
During constant speed operation, the difference between the speed
command and speed feedback exceeded the set amount and set time.
: Deceleration control,
6 - 6
Alarm details
: Dynamic brake stop, : Initial error (while motor is
Reset
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