Troubleshooting And Remedial Actions - Vexta CFK II Series Operating Manual

Troubleshooting and remedial actions

During motor operation, the motor or driver may fail to function properly due to an
improper speed setting or wiring. When the motor cannot be operated correctly, refer to
the contents provided in this section and take appropriate action. If the problem persists,
contact your nearest office.
Phenomenon
Connection error in the motor
The motor is lead or power cable
not energized.
Current-adjustment control
The motor's
incorrectly set
output shaft
If the setting is too low, the
can be turned
motor torque will also be too low
easily with the
and operation will be unstable.
hands.
The A.W.OFF input is set to
"ON."
Pulse-input line connection
error
The motor does During 1-pulse input, the pulses
not run. are connected to the DIR input
(pin Nos. 3 and 4).
During 2-pulse input, the CW
input and the CCW input came
on at the same time.
The motor With 1-pulse input selected, the
rotates in the DIR input setting is reversed.
direction
opposite that
which is With 2-pulse input selected, the
specified. CW input and the CCW input are
connected in reverse.
Possible cause Remedial action
Double-check that the connections
between the driver, motor and power
supply are correct.
Return the current-adjustment control
to its factory setting and check.
Switch the A.W.OFF input to "OFF"
and confirm that the motor is excited.
• Check the controller and driver
connections.
• Check the pulse-input specifications
(voltage and width).
Connect the pulses to the PLS input
(pin Nos.1 and 2).
Input either the CW input or the CCW
input, and always switch the other
terminal to "OFF."
Set the rotation-direction input to "ON"
when setting the clockwise direction;
set the rotation direction input to
"OFF" when setting the counter-clock-
wise direction.
Connect the CW pulses to the CW
input (pin Nos. 1 and 2), and connect
the CCW pulses to the CCW input (pin
Nos. 3 and 4).
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