DA98A AC Servo Drive Unit
User Manual
CHAPTER 5 ALARM AND TROUBLESHOOTING
z Personnel undertaking check and maintenance should be qualified with the
knowhow knowledge and capability.
z Do not touch the drive unit and motor within 5 minutes after they are cut off to
avoid electric shock and burning.
z The drive unit that fault alarm occurs can be put into use only after its fault is
eliminated according to its alarm code.
z Make sure the SON signal (servo valid) invalid before resetting alarm to avoid
the unexpected accident owing to motor suddenly start.
Note
5.1 Alarm list
Table 5.1 Alarm list
Alarm
code
Alarm name Content
-- Normal
1 Overspeed
The servo motor speed exceeds its setting
value.
2 Main circuit overvoltage Power voltage of main circuit is too high.
3 Main circuit undervoltage. Power voltage of main circuit is too low.
4 Position out-of-tolerance
The value of position deviator exceeds its
setting value.
5 Motor overheated Motor temperature is too high.
6
Saturation fault of speed
amplifier
Speed amplifier saturation is too long.
7 Drive stop abnormal Both CCW, CW drive stop inputs are OFF.
8
The position deviator
overflow
Absolute value of position deviator exceeds 2
30
.
9 Encoder fault Encoder signal has errors.
10
Control power supply
undervoltage
Control power supply is ±15V lower.
11 IPM module fault IPM intelligent module is at fault.
12 Overcurrent Motor current is too large.
13 Overload
The AC servo drive unit and motor are
overloaded (instantaneous overheating).
14 Brake fault Brake circuit is at fault.
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