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Revision August 2006, SE08, SW V2.61
Appendix B Accessories
B.1 All Brake Resistors & Brake 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.
The brake unit should be at least 10 cm away from AC motor drive to avoid possible interference.
Refer to the “Brake unit Module User Manual” for further details.
Applicable
Motor
Voltage
hp kW
Full Load
Torque
Nm
Resistor
value spec
for each AC
Motor Drive
Brake Resistors
Model and No.
of Units Used
Braking
Torque
10%ED
Min. Equivalent
Resistor Value for
each AC Motor Drive
1/4 0.2 0.110
80W 200Ω
BR080W200 1 400
120Ω
1/2 0.4 0.216
80W 200Ω
BR080W200 1 220
120Ω
1 0.75 0.427
80W 200Ω
BR080W200 1 125
80Ω
2 1.5 0.849
300W 100Ω
BR300W100 1 125
55Ω
115V/230V
Series
3 2.2 1.262
300W 70Ω
BR300W70 1 125
35Ω
1/2 0.4 0.216
80W 750Ω
BR080W750 1 230
470Ω
1 0.75 0.427
80W 750Ω
BR080W750 1 125
260Ω
2 1.5 0.849
300W 400Ω
BR300W400 1 125
190Ω
460V
Series
3 2.2 1.262
300W 250Ω
BR300W250 1 125
145Ω
NOTE
1. Please select the brake unit and/or brake resistor according to the table.
2. If damage to the drive or other equipment is due to the fact that the brake 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 brake resistors.
4. If the minimum resistance value is to be utilized, consult local dealers for the calculation of
the power in Watt.
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 brake units, equivalent resistor value of parallel brake 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 the brake unit thoroughly prior to