
4. SERVO FUNCTION DETAILS B-65150E/04
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4.13 FUNCTION FOR OBTAINING CURRENT OFFSETS AT
EMERGENCY STOP
(1) Overview
A current offset is an offset value arising from an analog offset voltage
associated with an current detector. If such an offset value is not
obtained correctly, the feedback current of the motor is adversely
affected, resulting in slight irregularities in the rotation of the motor
(four times/revolution).
At present, a current offset is obtained once when the power to the NC
is turned on as standard. The offset value varies, depending on the
temperature of the current detector. Use this function to cope with such
variations in time.
(2) Series and editions of applicable servo software
Series 9080/G(07) and subsequent editions (Series 15-B, 16-C, 18-C)
Series 9090/C(03) and subsequent editions (Series 16i, 18i, 21i, Power
Mate i)
Series 90A0/A(01) and subsequent editions (Series 15i, 16i, 18i, Power
Mate i)
(3) Setting parameters
#7 #6 #5 #4 #3 #2 #1 #0
1741
−
CROFS
2201
−
CROFS (#0) 1: Enables the current offset to be obtained upon the occurrence of an
emergency stop.