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15.4 Wiring of cables
Warning
1. Do not apply any excessive force to cables by repeated bending, tensioning or placing a
heavy object on the cables.
It may cause an electric shock, fire, or breaking of wire.
2. Connect wires and cables correctly.
Incorrect wiring could break he driver or its peripheral devices depending on the seriousness.
3. Do not connect wires while the power is supplied.
It can break the driver or its peripheral devices could be damaged to cause a malfunction.
4. Do not carry this product by holding its cables.
It may cause an injury or damage to the product.
5. Do not connect power cable or high-voltage cable in the same wiring route as the unit.
Te wires to the driver or its peripheral devices can be interrupted with noise or induced surge voltage
from power lines or high-voltage lines and malfunction could be caused.
Separate the wiring of the driver and its peripheral device from that of power line and high voltage
line.
6. Verify the insulation of wiring.
Insulation failure (interference with other circuit, poor insulation between terminals and etc.) could
introduce excessive voltage or current to the driver or its peripheral devices and damage them.
15.5 Power supply
Caution
1. Use a power supply that has low noise between lines and between power and ground.
In cases where noise is high, an isolation transformer should be used.
2. The power supplys should be separated between the driver power and the I/O signal power and
both of them do not use the power supply of “inrush current restraining type”
.
If the power supply is “inrush current restraining type”, a voltage drop may be caused during the
acceleration of the
electric actuator.
3. To prevent surges from lightning, an appropriate measure should be taken. Ground the surge
absorber for lightning separately from the grounding of the driver and its peripheral devices.
15.6 Grounding
Warning
1. Be sure to carry out grounding in order to ensure the noise tolerance of the driver.
It may cause an electric shock or fire.
2. Dedicated grounding should be used.
Grounding should be to a D-class ground (Ground resistance of 100 Ω or less.)
3. Grounding should be performed near the unit as much as possible to shorten the grounding
distance.
4. In the unlikely event that malfunction is caused by the ground, it may be disconnected.
15.7 Maintenance
Warning
1. Perform a maintenance check periodically
Confirm wiring and screws are not loose.
Loose screws or wires may cause unintentional malfunction.
