Wiring 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 the controller or its peripheral devices depending on the seriousness. 3. Do not connect wires while the power is supplied. It can break the controller or its peripheral devices could be damaged to cause a malfunction. 4. Do not carry the product by holding its cables. It may cause an injury or damage to the product. 5. Do not connect power or high voltage cables in the same wiring path as the unit. The product can malfunction due to noise and surge voltage interference in the signal line from the power and high voltage cables. Separate the wiring of the controller and its peripheral device from that of power and high voltage cables. 6. Verify wiring insulation. Insulation failure (interference with other circuits, poor insulation between terminals, etc.) could introduce excessive voltage or current to the controller or its peripheral controllers and damage them. Maintenance Warning 1. Perform a maintenance check periodically. Confirm wiring and screws are not loose. Loose screws or wires may cause unintentional malfunction. 2. Conduct an appropriate functional inspection after completing the maintenance. At times where the equipment or machinery does not operate properly, conduct an emergency stop of the system. Otherwise, an unexpected malfunction may occur and it will become impossible to secure the safety. Conduct a test of the emergency stop in order to confirm the safety of the equipment. 3. Do not disassemble, modify or repair the controller and its peripheral devices. 4. Do not put anything conductive or flammable inside of the controller. It may cause a fire. 5. Do not conduct an insulation resistance test and withstand voltage test on this product. 6. Ensure sufficient space for maintenance activities. Design the system that allows required space for maintenance. 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. To prevent surges from lightning, an appropriate measure should be taken. Ground the surge absorber for lightning separately from the grounding of the controller and its peripheral devices. Grounding Warning 1. Be sure to carry out grounding in order to ensure the noise tolerance. 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 controller and its peripheral devices to shorten the grounding distance. 4. In the unlikely event that malfunction is caused by the ground, it may be disconnected. Installation Warning 1. Install the controller and its peripheral devices on a fire-proof material. A direct installation on or near a flammable material may cause fire. 2. Do not install the product in a place subject to vibrations and impacts. It will cause failure or malfunction. 3. Do not mount the controller and its peripheral devices together with a large-sized electromagnetic contactor or no-fuse breaker, which generates vibration, on the same panel. Mount them on different panels, or keep the controller and its peripheral devices away from such a vibration supply. 4. Install the controller and its peripheral devices on a flat surface. If the mounting surface is distorted or not flat, an unacceptable force may be added to the housing, etc., to cause troubles. 5. Take measure so that the operating temperature of the controller and its peripheral devices are within the range of the specifications. Also, the driver should be installed with spaces between each side of it and the other structures or components. It may cause a malfunction of the controller and its peripheral devices and a fire. Electric Actuators Precautions 6 Be sure to read before handling. Controller (Including driver) and Peripheral Devices 69 B