YASKAWA SGM7D Product Manual

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Contents

YASKAWA SGM7D Product Manual Manual pdf 160 page image

9.1 Wiring Precautions9.1.1 General Precautions9-29.1 Wiring Precautions9.1.1 General Precautions• Never perform any wiring work while the power supply is ON.• Always connect the Servomotor Main Circuit Cable before you connect the Encoder Cable. Ifyou connect the Encoder Cable first, the encoder may be damaged due to the difference inelectrical potential from the FG.• Never touch the connector pins on the Servomotor directly with your hands. Particularly theencoder may be damaged by static electricity.• For a Medium-Capacity Servomotor with a Core, use the joint nuts to secure the cable con-nectors to the Servomotor. Make sure that they are securely attached.If they are not securely attached, the protective structure specifications may not be satisfied.• Separate the Servomotor Main Circuit Cable from the I/O Signal Cables and Encoder Cableby at least 30 cm.• Do not connect magnetic contactors, reactors, or other devices on the cables that connectthe SERVOPACK and Servomotor. Failure to observe this caution may result in malfunction ordamage.• Do not subject the cables to excessive bending stress or tension. The conductors in theEncoder Cable and Servomotor Main Circuit Cable are as thin as 0.2 mm 2 or 0.3 mm 2 . Wirethem 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 asmetal clippings, inside.• The connectors for Small-Capacity Servomotors are made from resin. To prevent damage, donot apply any strong impact.• Perform all wiring so that stress is not applied to the connectors. The connectors may breakif they are subjected to stress.• If you move the Servomotor while the cables are connected, always hold onto the main bodyof the Servomotor. If you lift the Servomotor by the cables when you move it, the connectorsmay be damaged or the cables may be broken.CAUTION Do not connect the Servomotor directly to an industrial power supply. Doing so will destroythe Servomotor. You cannot operate a Servomotor without a SERVOPACK that is designedfor it