Output Terminals For Main Circuit (U, V, W); Terminals [+/B1, B2] For Connecting Brake Resistor - Delta VFD-E User Manual

Output terminals for main circuit (U, V, W)

The factory setting of the operation direction is forward running. The methods to control
the operation direction are: method 1, set by the communication parameters. Please refer
to the group 9 for details. Method2, control by the optional keypad KPE-LE02. Refer to
Appendix B for details.
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 [+/B1, B2] for connecting brake resistor

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.
If the AC motor drive has a built-in brake chopper (frame B and frame C), connect the
external brake resistor to the terminals [+/B1, B2].
Models of frame A don't have a built-in brake chopper. Please connect an external
optional brake unit (BUE-series) and brake resistor. Refer to BUE series user manual for
details.
Connect the terminals [+(P), -(N)] of the brake unit to the AC motor drive terminals [+/B1, -
]. The length of wiring should be less than 5m with twisted cable.
When not used, please leave the terminals [+/B1, -] open.
WARNING!
Short-circuiting [B2] or [-] to [+/B1] can damage the AC motor drive.
Revision November 2007, 03EE, SW--PW V1.10/CTL V2.10
BR
BUE
BR
-(minus sign)
B2
Chapter 2 Installation and Wiring|
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