Yaskawa Sigma II Series DC Power Input SGMAJ - Manual (Page 179)

8 Operation
8.1.1 Trial Operation for Servomotor without Load
8-6
8.1.1 Trial Operation for Servomotor without Load
In this section, confirm the cable connections of the main circuit power supply, motor and encoder except the
connection to host controller. 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.
Confirm the display are the same for the optional digital operator (JUSP-OP02A-2).
• 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).
CAUTION
Step Description Check Method and Remarks
1
Secure the servomotor. Follow 3.3.1 Precautions on Servomotor Installation and secure
the servomotor mounting plate to the machine in order to prevent
the servomotor from moving during operation.
Do not connect the servomotor shaft to the machine. The servomo-
tor may tip over during rotation.
2
Check the power supply circuit, servomotor, and encoder
wiring. With the CN1 connector not connected, check the power supply
circuit and servomotor wiring. Do not use the CN1 I/O signals
here.
Refer to 6.1 Wiring Main Circuit for wiring example of main cir-
cuit. Refer to 2.4 Selecting Cables for motor and encoder cables.
3
Turn ON power.
Normal Display
Example of Alarm Display
If the power is correctly supplied, the digital operator display 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). For details, refer to 7.1.4 Status Display.
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.
Refer to 10.1 Troubleshooting.
Secure the mounting plate
of the servomotor to the
equipment.
Do not connect anything
to the shaft
(no-load conditions).
Encoder
cable
Power
supply
Alternate display