Chapter 2 Installation and Wiring
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VFD-VL
2-9
time to avoid nuisance tripping. For the specific GFCI of the AC motor drive, please
select a current sensor with sensitivity of 30mA or above.
Do NOT run/stop AC motor drives by turning the power ON/OFF. Run/stop AC motor
drives by RUN/STOP command via control terminals or keypad. If you still need to
run/stop AC drives by turning power ON/OFF, it is recommended to do so only
ONCE per hour.
Do NOT connect 3-phase models to a 1-phase power source.
Output terminals for main circuit (U, V, W)
When it needs to install the filter at the output side of terminals U/T1, V/T2, W/T3 on
the AC motor drive. Please use inductance filter. Do not use phase-compensation
capacitors or L-C (Inductance-Capacitance) or R-C (Resistance-Capacitance),
unless approved by Delta.
DO NOT connect phase-compensation capacitors or surge absorbers at the output
terminals of AC motor drives.
Use well-insulated motor, suitable for inverter operation.
Terminals [+1, +2] for connecting DC reactor, terminals [+1, +2/B1] for connecting brake
resistor
+1
Jumper
DC reactor
To improve power factor and reduce harmonics connect a DC reactor between
terminals [+1, +2/B1]. Please remove the jumper before connecting the DC reactor.
Models above 22kW don’t have a built-in brake chopper. Please connect an external
optional brake resistor.
When not used, please leave the terminals [+2/B1, -] open.
Short-circuiting [B2] or [-] to [+2/B1] can damage the AC motor drive.
Call 1(800)985-6929 for Sales
deltaacdrives.com
Call 1(800)985-6929 for Sales
deltaacdrives.com