9.5 Wiring Servomotors and SERVOPACKs
9.5.1 Wiring Precautions
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9
Connections between Servomotors and SER
VOP
ACKs
9.5
Wiring Servomotors and SERVOPACKs
9.5.1
Wiring Precautions
General Precautions
•
Never perform any wiring work while the power supply in ON.
•
Always connect the Servomotor Main Circuit Cable before you connect the Encoder Cable. If
you connect the Encoder Cable first, the encoder may be damaged due to the difference in
electrical potential from the FG.
•
Never touch the connector pins on the Servomotor directly with your hands. Particularly the
encoder may be damaged by static electricity.
•
For the following Servomotor models, use the screws to secure the cable connectors to the
Servomotor. Make sure that they are securely attached.
•
SGM7J Servomotors
•
SGM7A Servomotors up to 1.0 kW
•
SGM7G Servomotors up to 450 W
•
SGM7P Servomotors up to 400 W
If they are not securely attached, the protective structure specifications may not be satisfied.
•
Do not remove rubber packings or O-rings. Also, make sure that rubber packings and O-
rings do not come off. If the rubber packings or O-rings are not securely attached, the pro-
tective structure specifications may not be satisfied.
•
Separate the Servomotor Main Circuit Cable from the I/O Signal Cables and Encoder Cable
by at least 30 cm.
•
Do not connect magnetic contactors, reactors, or other devices on the cables that connect
the SERVOPACK and Servomotor. Failure to observe this caution may result in malfunction or
damage.
•
Do not subject the cables to excessive bending stress or tension. The conductors in the
Encoder Cable and Servomotor Main Circuit Cable are as thin as 0.2 mm
2
or 0.3 mm
2
. Wire
them so that they are not subjected to excessive stress.
•
If you secure the cables with cable ties, protect the cables with cushioning material.
•
If the cable will be bent repeatedly, e.g., if the Servomotor will move in the machine, use Flex-
ible Cables. If you do not use Flexible Cables, the cables may break.
•
Before you connect the wires, make sure that there are no mistakes in the wiring.
•
Always use the connectors specified by Yaskawa and insert them correctly.
•
When you connect a connector, check it to make sure there is no foreign matter, such as
metal clippings, inside.
•
The connectors are made of resin. To prevent damage, do not apply any strong impact.
•
Perform all wiring so that stress is not applied to the connectors. The connectors may break
if they are subjected to stress.
•
If you move the Servomotor while the cables are connected, always hold onto the main body
of the Servomotor. If you lift the Servomotor by the cables when you move it, the connectors
may be damaged or the cables may be broken.
CAUTION
Do not connect the Servomotor directly to an industrial power supply. Doing so will destroy
the Servomotor. You cannot operate a Servomotor without a SERVOPACK that is designed
for it.
