Delta Electronics VFD-F Series manual „ When not used, please leave the terminals +2+2/B1, - open

VFD-F Series

Terminals [+2/B1, B2] for connecting brake resistor and terminals [+2/B1, -] for connecting external brake unit

BR

+2/ B1

BR

VFDB

B2 +2/ B1

Brake resistor(optional)

Brak e unit(optional )

Refer to Appendix B for the us e of special brake resis tor/unit

-

„Connect a brake resistor or brake unit in applications with frequent deceleration ramps, short deceleration time, too low brake torque or requiring increased brake torque.

„If the AC motor drive has a built-in brake chopper, connect the external brake resistor to the terminals [＋2/B1, B2].

„Some models of VFD-F series don’t have a built-in brake chopper, please connect an external optional brake unit and brake resistor.

„When not used, please leave the terminals [+2(+2/B1), -] open.

WARNING!

Short-circuiting [B2] or [-] to [+2/B1] can damage the AC motor drive.

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