Chapter 2 Installation and Wiring_VFD-B Series
2-20
Revision 10/2005, BE13, SW V4.08

DO NOT connect phase-compensation capacitors or surge absorbers at the output terminals of AC
motor drives.

With long motor cables, high capacitive switching current peaks can cause over-current, high
leakage current or lower current readout accuracy. To prevent this, the motor cable should be less
than 20m for 3.7kW models and below. And the cable should be less than 50m for 5.5kW models
and above. For longer motor cables use an AC output reactor.

Use well-insulated motor, suitable for inverter operation.
Terminals [+1, +2] for connecting DC reactor
+1
Jumper
DC reactor
To improve power factor and reduce harmonics connect a DC reactor between terminals [+1, +2].
Please remove the jumper before connecting the DC reactor.
NOTE
Models of 15kW and above have a built-in DC reactor.
Terminals [+2/B1, B2] for connecting brake resistor and terminals [+1, +2/B1] for connecting
external brake unit
B2
VFDB
-(minus sign)
BR
BR
Connect a brake resistor or brake unit in applications with frequent deceleration ramps, short
deceleration time, too low braking torque or requiring increased braking torque.
To Next Page
Loading...
Need help?
General