Nidec Control Techniques Digitax-SF Series User Manual

20
8. Troubleshooting
Digitax SF Instruction Manual
４. Troubleshooting
Problem 3（No motor rotation）
Cause Remedy
The parameters are not set
correctly.
Check the parameters required for the control mode that you are using.
Command from the host controller
is not correctly input.
Check the command from the host controller.
Use Digitax SF Connect to measure the waveforms of Pulse Train Command
Input (position) or Analog Velocity Command Input and verify that normal
commands are input.
Check the parameters such as pulse ratio. It is possible that the motor is rotating
very slowly.
The command input pins of user
I/O connector are not connected
correctly.
Check for correct I/O connections.
4 Connections
No command input is allowed. Open HOLD and COM- pins of the user I/O.
Torque command limit is not set
correctly.
Verify that Torque command limit: Value 1 and Value 2 (147.0, 148.0) are
set correctly.
CCW/CW drive limit switch
input is enabled.
If CCW/CW drive limit switch input is not required, set Drive limit switch
input: Setup (67.0) to 0 (disable).
If it is enabled and required, connect both CCWL and CWL pins of the user
I/O connector with either “COM-“ or “closed” each.
The servo is on, but the motor does not rotate.
6 Operations

Nidec Control Techniques Digitax-SF Series Specifications

General

Brand	Nidec
Model	Control Techniques Digitax-SF Series
Category	Servo Drives
Language	English