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Category
Wiring
Installation
Causes
CN I/F signals are chattering:
① Servo-ON signals
② Counter clear input signal
③ CW/CCW torque limit input
signal
④Command pulse input inhibit
signal
Load inertia is large.
Countermeasures
① Check the wiring and connections between CN I/
F pins 29 and 41 by monitoring the display of in-
put and output signals status. Modify the wiring
so that Servo-ON signals can be made active
correctly. Check the controller.
②Check the wiring and connections between CN
I/F pins 30 and 41 by monitoring the display of
input and output signals status. Modify the wiring
so that Position Error Counter input can be made
active correctly. Check the controller.
③ Check the wiring and connections between CN I/
F pins 17 and 18, and 16 and 17 using a circuit
tester and/or oscilloscope. Modify the wiring so
that CW/CCW torque limit input can be made
active correctly. Check the controller.
④ Check the wiring and connections between CN I/
F pins 33 and 41 by monitoring the display of in-
put and output signals status. Modify the wiring
so that Command Pulse Input Inhibit can be made
active correctly. Check the controller.
Check the overshoot at stop using the wave form
graphics function of PANATERM. Adjust the gains.
If this is not effective, increase the capacity of
the driver and motor.
The initial (home) position varies.
Category
System
Wiring
Causes
When calculating the initial
(home) position, the Z-phase
output is not detected.
Creep speed to initial position is
too high.
The output of the initial (home)
position proximity sensor (dog
sensor) is chattering.
Noise on encoder wires
Countermeasures
Check that the Z-phase accords to the center of
the proximity dog. Perform initialization correctly
according to the controller.
Decrease the return speed near the initial (home)
position, or lengthen the initialization sensor.
Check the input to the sensor using an oscilloscope.
Modify the wiring around the sensor. Take measures
to reduce the noise.
Take measures to reduce the noise (noise filters,
ferrite cores, etc.). Properly connect the shield wires
of I/F cables. Use twist-paired wires. Separate the
signal and power wires.
Important
information
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