Delta VFD-L-I Series, Руководство пользователя

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Chapter 2 Installation and Wiring
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VFD-L-I Series
2-8 Revision July 2009, SW V1.1
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When using a GFCI (Ground Fault Circuit Interrupter), select a current sensor with
sensitivity of 200mA, and not less than 0.1-second detection time to avoid nuisance
tripping.
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If the insulation of the control wire is damaged due to some reasons, it may result in the
circuit damage or personal injury.
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The AC motor drive, motor and wiring may cause noise interference. Please notice the
surrounding sensors and equipment to prevent erroneous actions.
Main circuit terminals (L1, L2)
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Please connect these main circuit terminals (L1, L2) to the AC power via a no-fuse
breaker or electricity leakage breaker for circuit protection. It is unnecessary to consider
phase-sequence.
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It is recommended to add a magnetic contactor (MC) in the power input wiring to cut off
power quickly and reduce malfunction when activating the protection function of AC
motor drives. Both ends of the MC should have an R-C surge absorber.
Control circuit terminals (U, V, W)
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When the AC drive output terminals U, V, and W are connected to the motor terminals
U/T1, V/T2, and W/T3, respectively, the motor will rotate counterclockwise (as viewed on
the shaft end of the motor) when a forward operation command is received. To
permanently reverse the direction of motor rotation, switch over any of the two motor
leads.
Forward
running
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DO NOT connect phase-compensation capacitors or surge absorbers at the output
terminals of AC motor drives.
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Use a well-insulated motor, suitable for inverter operation.
Grounding terminals ( )