ProNet Plus Series AC Servo User's Manual
4.1.1 Trial Operation for Servomotor Without Load
·Release the coupling between the servomotor and the machine, and secure only the servomotor without a load.
·To prevent accidents, initially perform the trial operation for servomotor under no-load conditions (with all couplings
and belts disconnected).
In this section, confirm the cable connections of the main circuit power supply, servomotor and encoder. Incorrect wiring is
generally the reason why servomotors fail to operate properly during the trial operation.
Confirm the wiring, and then conduct the trial operation for servomotor without load according to the following steps.
Secure the servomotor
flange to the machine.
Do not connect anything to the
shaft ( no-load conditions).
Secure the servomotor flange to the machine in order
to prevent the servomotor frommoving during
operation.
Do not connect the servomotor shaft to the machine.
The servomotor may tip over during rotation.
Check the power supply circuit, servomotor, and encoder
wiring.
With the I/O signal connector (CN1)disconnected,
check the power supply circuit and servomotor wiring.
Refer to 3.1 Main Circuit Wiring.
Turn ON the control power supply and main circuit power
supply.
Normal Display
Alternate Display
Example of Alarm Display
If the power is correctly supplied, the panel operator
display on the front panel of the servo drive will appear
as shown on the left. The display on the left indicates
that forward run prohibited (P-OT) and reverse run
prohibited (N-OT).
If an alarm display appears, the power supply circuit,
servomotor wiring, or encoder wiring is incorrect. If an
alarm is displayed, turn OFF the power, find the
problem, and correct it.
When using a servomotor with a brake, release the brake
first before driving the servomotor.
When using a servomotor equipped with an absolute
encoder, the encoder setup is required before driving the
servomotor.
Please refer to 4.3.4 Setting for Holding Brakes
Please refer to 4.5 Operating Using Speed Control
with Analog Reference
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