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MITSUBISHI CNC
Appendix 6 Explanation of Alarms
004B Motor side dtc: Error 8
Details
An error was detected by the detector connected to the main side.
The error details are different according to the connected detector.
- Servo stop method: Dynamic stop
- Spindle stop method: Coast to a stop
[Detector alarm (Servo drive unit)]
- MBA405W(MITSUBISHI) Count error
- AT343, AT543, AT545, ST748(Mitsutoyo) Photoelectric type error
- LC193M, LC493M, LC195M, LC495M, LC291M, RCN223M, RCN227M, RCN727M, RCN827M, EIB
Series(HEIDENHAIN) Relative position data error
- MPRZ Scale(Mitsubishi Heavy Industries) Phase fault
- SR75, SR85, SR77, SR87, RU77(Magnescale) Relative position data error
[Detector alarm (Spindle drive unit)]
- TS5690, TS5691(MITSUBISHI) Relative position data error
- MBE405W(MITSUBISHI) Count error
- EIB Series(HEIDENHAIN) Relative position data error
- MPCI scale(Mitsubishi Heavy Industries) Phase fault
(Note) A driver processes all reset types of alarms as "PR". However, "AR" will be applied according to
the detector.
004C Current err mag pole estim
Details
Current detection failed at the initial magnetic pole estimation.
- Servo stop method: Dynamic stop
- Spindle stop method: Coast to a stop
004D Dual signal error
Details
An error was detected in the signal related to the dual signal.
- Servo stop method: Dynamic stop
- Spindle stop method: Coast to a stop
004E NC command mode error
Details
An error was detected in the control mode send from the NC.
- Servo stop method: Deceleration stop enabled
- Spindle stop method: Deceleration stop enabled
004F Instantaneous power interrupt
Details
The control power supply has been shut down for 50ms or more.
- Servo stop method: Deceleration stop enabled
- Spindle stop method: Deceleration stop enabled
0050 Overload 1
Details
Overload detection level became 100% or more. The motor or the drive unit is overloaded.
- Servo stop method: Deceleration stop enabled
- Spindle stop method: Deceleration stop enabled
0051 Overload 2
Details
In a servo system, current command of 95% or more of the unit's max. current was given continuously
for 1 second or longer. In a spindle system, current command of 95% or more of the motor's max.
current was given continuously for 1 second or longer.
- Servo stop method: Deceleration stop enabled
- Spindle stop method: Deceleration stop enabled
0052 Excessive error 1
Details
A position tracking error during servo ON was excessive.
- Servo stop method: Deceleration stop enabled
- Spindle stop method: Deceleration stop enabled
IV - 70
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