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Chapter 11 Troubleshooting
11–32
Alarm check timing
f1 f2 f3 f4
Alarm No.
E1
Overload warning:
An level 80% of the overload alarm 1 was detected.
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Investigation details Investigation results Remedies
The motor is not hot. Check the alarm No. "50" items. 1 Check whether the motor is hot.
The motor is hot. Investigate item 2.
Operation is possible without problem. 1. If possible, ease the operation pattern.
2. If an alarm does not occur with
continued operation, continue in this
state.
2 Check whether there is a problem
during acceleration/deceleration
operation.
There is a problem in the operation. Check investigation items 3 and following
of alarm No. "50".
Alarm check timing
f1 f2 f3 f4
Alarm No.
E4
Parameter error warning:
A parameter exceeding the setting range was set.
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Investigation details Investigation results Remedies
1 Set the correct values following the
parameter adjustment procedures.
Alarm check timing
f1 f2 f3 f4
Alarm No.
E7
CNC emergency stop:
An emergency stop signal is being sent from the CNC, or an alarm is occurring in
another axis.
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Investigation details Investigation results Remedies
The emergency stop state is entered. Investigate item 2. 1 Check whether the CNC side
emergency stop switch has been
applied.
Emergency stop has been canceled. Investigate item 3.
Operation starts normally. Normal 2 Cancel the emergency stop.
"E7" remains displayed. Investigate item 3.
Pinpoint the cause of the fault. Correct the fault. 3 Check whether the terminator or battery
unit is connected, or whether these are
loose.
Normal Check the alarm No. "34" items.
CAUTION
To prevent trouble, when changing the motor and driver combination, avoid
driving a driver with a larger capacity than the specified driver using the motor.
The motor could be demagnetized. Note that this combination can be used for
checking in the emergency stop state. A driver with a capacity smaller than the
specifications can be driven with the motor.