Chapter 6 Description of Operations
PAGE 6-33
Current Value Warnings
After the end of the fastening operation, it is judged whether or not the peak current value
during operation is within the high and low limit ranges. If the peak current value during
operation falls below the low current limit or exceeds the high current limit, although the
controller outputs the ACCEPT axis judgment, the PLC layout output signal “Multi: Current
Limit Warning,” “Axis: Current Limit Warning,” “Axis: Current Low Warning,” or “Axis: Current
High Warning” is turned “ON.”
・The current value warning judgment cannot be made unavailable.
・As the full scale current, a value based on the motor used is set automatically in accordance
with the model of the controller. Do not change this value if there is no special reason to do
so.
Also, the current limit value limits the maximum value of the current during the fastening
operation. If a value lower than the full scale current is set, the fastening operation is executed so
that the current value does not exceed the value set as the current limit. The current limit value is
used to protect the motor during the execution of the torque recovery, which is an after-fastening
operation. When the current limit is exceeded, the fastening is stopped and the abnormal state
signal A05-01 “Servo Reply Error” is generated.
520: Full Scale Current Value:100%
523: Fastening Current Limit :100%
522: High Current Limit :100%
521: Low Current Limit : 0%
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