1-1
1. Safety Precautions
1.1 Before supplying Power to the AC Drive
1.2 Wiring
Warning:
• To avoid the front cover disengaging or other physical damage, do not carry the AC Drive by its cover.
Support the unit by its heat sink when transporting. Improper handling can damage the AC Drive or injure
personnel and should be avoided.
• To avoid the risk of fire, do not install the AC Drive on or near flammable objects. Install on nonflammable
objects such as metal surfaces.
• If several AC Drives are placed inside the same control panel, provide adequate ventilation to maintain the
temperature below 50°C/122°F to avoid overheating or fire.
• When removing or installing the digital operator, turn off the power first and then follow the instructions in
this manual to avoid operator error or loss of display caused by faulty connections.
Warning:
MAIN CIRCUIT POWER SUPPLY TERMINALS MUST BE
CORRECTLY WIRED
Single Phase Input: L1(L) and L3(N)
Three Phase Input: L1(L), L2, and L3(N)
MOTOR CONNECTION ONLY: T1, T2, T3
(input power connection here will destroy the AC Drive)
Warning:
• Always turn OFF the power supply before attempting AC Drive installation and wiring of the user terminals.
• Installation and wiring must be performed by qualified personnel
• Properly ground the AC Drive and motor-side ground. Improper grounding could result in serious injury or
death from contacting the motor case.
• Grounding impedance: 240V class - less than 100Ω, 480V class - less than 10Ω
• Please check and test emergency stop circuits after wiring. (Installer is responsible for the correct wiring.)
• Never touch any of the input or output power lines directly or allow any input or output power lines to come
in contact with the AC Drive case.
• Do not perform a dielectric voltage withstand test (megger) on the AC Drive. This will result in AC Drive
damage to the semiconductor components.
• Check all wiring to ensure all connections are correct after installation of AC Drive and any other devices.
Failure to comply could result in serious injury, death, fire, or damage to the AC Drive.
Caution:
• Do not use an improper voltage source. Failure to comply could result in serious injury, death, fire, or
damage to the AC Drive. Verify the rated voltage of the AC Drive matches the voltage of the incoming
power supply before applying power.
• Tighten all terminal screws to the specified tightening torque. Loose electrical connections could result in
death or serious injury by fire due to overheating of electrical connections. (See Wire Gauge and Torque
Specification section 2.2)
• Never connect input power to the AC Drive output terminals T1, T2, T3.
• Do not connect a contactor or switch in series with the AC Drive and the motor.
• Do not connect a power factor correction capacitor or surge suppressor to the AC Drive output.
• Ensure the interference generated by the AC Drive and motor does not affect peripheral devices.
• Do not use unshielded cable for control wiring. Failure to comply may cause electrical interference resulting
in poor system performance. Use shielded twisted-pair wires and ground the shield to the ground terminal
of the AC Drive.