Mitsubishi MELDAS MDS-C1 Instruction Manual page 252

Drive unit alarm
No. Alarm name
40 Detector changeover unit,
changeover error
41 Detector changeover unit,
communication error
42 Feedback error 1
43 Feedback error 2
44 C-axis changeover alarm
46 Motor overheat
4E NC command mode error
50 Overload 1
51 Overload 2
52 Excessive error 1
53 Excessive error 2
54 Excessive error 3
58 Collision detection 1 G0
59 Collision detection 1 G1
5A Collision detection 2
5C Orientation feedback error
5D Speed monitor/ input mismatch
5E Speed monitor/ feedback error
(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
During 1-drive unit 2-motor control, an error was detected in the motor
changeover signal received form the detector changeover unit.
During 1-drive unit 2-motor control, an error was detected in the
communication with the detector changeover unit.
With the servo, pulse-type position detector feedback signal error was
detected. With the spindle, a PLG feedback signal error was detected.
With the servo, an excessive error was detected in the position data for
the motor side detector and machine side detector. With the spindle, an
error was detected in the encoder feedback signal.
When using the coil changeover control motor, the mode was changed
to C-axis control while the high-speed coil was selected.
The temperature protection function in the motor or detector activated.
A spindle control mode selection exceeding the specifications was
input.
The overload detection level reached 100% or more. The motor or drive
unit is in the overload state.
With the servo, a current command exceeding 95% of the unit's
maximum current continued for one second or more. With the spindle, a
load exceeding the continuous rating continued for 30 minutes or more.
With the servo, the difference of the motor's actual position at servo ON
and the theoretical position exceeded the setting value. With the
spindle, the difference of the position command and position feedback
exceeded the setting value.
The difference of the motor's actual position at servo OFF and the
theoretical position exceeded the setting value.
The motor current was not detected when the excessive error 1 alarm
occurred.
When the collision detection function is valid, the disturbance torque
exceeded the collision detection value during rapid traverse (G0).
When the collision detection function is valid, the disturbance torque
exceeded the collision detection level during cutting feed (G1).
When the collision detection function is valid, the command torque
reached the motor's maximum torque.
After orientation was completed, the command and feedback error
exceeded the parameter setting.
In respect to the door status signal for speed monitor control, a
mismatch of the external input signal and control signal received from
the NC was detected.
During speed monitor control, the spindle speed exceeded the set
speed while the door was open.
: Deceleration control,
6 - 7
Alarm details
: Dynamic brake stop, : Initial error (while motor is
Reset
PR
PR
PR
PR
NR
NR
NR
NR
NR
NR
NR
NR
NR
NR
NR
PR
PR
PR