Delta VFD-M-D series User Manual

Revision Jan. 2007, MDE2, SW V1.05 B-1
Appendix B Accessories
B.1 All Braking Resistors & Braking Units Used in AC Motor Drives
Note: Please only use DELTA resistors and recommended values. Other resistors and values will void
Delta’s warranty. Please contact your nearest Delta representative for use of special resistors.
Applicable
Motor
Voltage
hp kW
Full
Load
Torque
Nm
Resistor
value spec
for each AC
Motor Drive
Braking Unit
Model VFDB
No. of Units
Used
Braking Resistors
Model and No. of
Units Used
Braking
Torque
10%ED
Min. Equivalent
Resistor Value
for each AC
Motor Drive
230V Series
0.5 0.4 0.216
80W 200Ω
-- BR080W200 1 220
200 Ω
NOTE
1. Please select the factory setting resistance value (Watt) and the duty-cycle value (ED%).
2. If damage to the drive or other equipment are due to the fact that the braking resistors and the
braking modules in use are not provided by Delta, the warranty will be void.
3. Take into consideration the safety of the environment when installing the braking resistors.
4. If the minimum resistance value is to be utilized, consult local dealers for the calculation of the
Watt figures.
5. Please select thermal relay trip contact to prevent resistor over load. Use the contact to switch
power off to the AC motor drive!
6. When using more than 2 braking units, equivalent resistor value of parallel braking unit can’t be
less than the value in the column “Minimum Equivalent Resistor Value for Each AC Drive” (the
right-most column in the table).
7. Please read the wiring information in the user manual of braking unit thoroughly prior to taking
into operation.

Delta VFD-M-D series Specifications

General

Brand	Delta
Model	VFD-M-D series
Category	Controller
Language	English