
4.BZi SENSOR INSTRUCTION B-65292EN/03
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4.4 FEEDBACK SIGNAL ADJUSTMENT
Check the feedback signal after installing the BZi sensor. Pins for
checking are on the check board. The check board is not attached to
the amplifier or to the motor. (Specification No. : A06B-6078-H001)
Refer to the MAINTENANCE MANUAL (B-65285EN) of FANUC
SERVO MOTOR αi series for details of the check board.
CAUTION
Do not contact the rings with the sensor when
adjusting the gap between them. It will damage
them.
NOTE
Check the feedback signal after setting the
parameters concerning the sensor. The feedback
signal is output correctly after CNC loads the
parameters.
Pins for checking
Use pins shown below for the feedback signal checking.
Connect the check board to the JY1 connector of SPM and then check
the output signals on the following terminals.
Main spindle
Speed feedback
Position
feedback
One rotation
signal
Sensor signal
input connector
PA1,PB1 PA1,PB1 PS1 JYA2
Sub spindle (in case of using sub spindle/spindle switching control)
Speed feedback
Position
feedback
One rotation
signal
Sensor signal
input connector
PA2,PB2 PA2,PB2 PS2 JYA2