Delta Electronics VFD022CB23A-21M [43/363] All brake resistors and brake units used in ac motor drives

Delta Electronics VFD007CB23A-21M [43/363] All brake resistors and brake units used in ac motor drives
Chapter 7 Optional Accessories |C200 Series
7-2
All Brake Resistors and Brake Units Used in AC Motor Drives
230V 1-phase
Applicable
Motor
*
1
125%Braking Torque 10%ED *
2
Max. Brake Torque
HP kW
Braking
Torque
(kg-m)
*
3
Braking Resistor
series for each Brake
Unit
Resistor value
spec. for each
AC motor Drive
Total
Braking
Current
(A)
Min. Resistor
Value ()
Max. Total
Braking
Current (A)
Peak Power
(kW)
0.5 0.4 0.27 BR080W200*1 80W200 1.9 63.3 6 2.3
1 0.75 0.51 BR080W200*1 80W200 1.9 63.3 6 2.3
2 1.5 1.0 BR200W091*1 200W91 4.2 47.5 8 3.0
3 2.2 1.5 BR300W070*1 300W70 5.4 38.0 10 3.8
230V 3-phase
Applicable
Motor
*
1
125%Braking Torque 10%ED *
2
Max. Brake Torque
HP kW
Braking
Torque
(kg-m)
*
3
Braking Resistor
series for each Brake
Unit
Resistor value
spec. for each
AC motor Drive
Total
Braking
Current
(A)
Min. Resistor
Value ()
Max. Total
Braking
Current (A)
Peak Power
(kW)
0.5 0.4 0.27 BR080W200*1 80W200 1.9 63.3 6 2.3
1 0.75 0.51 BR080W200*1 80W200 1.9 63.3 6 2.3
2 1.5 1.0 BR200W091*1 200W91 4.2 47.5 8 3.0
3 2.2 1.5 BR300W070*1 300W70 5.4 38.0 10 3.8
5 3.7 2.5 BR400W040*1 400W40 9.5 19.0 20 7.6
460V
Applicable
Motor
*
1
125%Braking Torque 10%ED *
2
Max. Brake Torque
HP kW
Braking
Torque
(kg-m)
*
3
Braking Resistor
series for each Brake
Unit
Resistor value
spec. for each
AC motor Drive
Total
Braking
Current
(A)
Min. Resistor
Value ()
Max. Total
Braking
Current (A)
Peak Power
(kW)
1 0.75 0.5 BR080W750*1 80W750 1 190.0 4 3.0
2 1.5 1.0 BR200W360*1 200W360 2.1 126.7 6 4.6
3 2.2 1.5 BR300W250*1 300W250 3 108.6 7 5.3
5 3.7 2.5 BR400W150*1 400W150 5.1 84.4 9 6.8
5.5 4.0 2.7 BR1K0W075*1 1000W75 10.2 54.3 14 10.6
7.5 5.5 3.7 BR1K0W075*1 1000W75 10.2 54.3 14 10.6
10 7.5 5.1 BR1K0W075*1 1000W75 10.2 47.5 16 12.2
*
1
Calculation for 125% brake toque: (kw)*125%*0.8; where 0.8 is motor efficiency.
Because there is a resistor limit of power consumption, the longest operation time for 10%ED is 10sec (on: 10sec/ off:
90sec).
*
2
Please refer to the Brake Performance Curve for “Operation Duration & ED” vs. “Braking Current”.
*
3
For heat dissipation, a resistor of 400W or lower should be fixed to the frame and maintain the surface temperature below
50; a resistor of 1000W and above should maintain the surface temperature below 350 .
NOTE
1. Definition for Brake Usage ED%
Explanation: The definition of the brake usage ED (%) is for assurance of enough time for the brake unit and brake resistor
to dissipate away heat generated by braking. When the brake resistor heats up, the resistance would increase with
temperature, and brake torque would decrease accordingly. Recommended cycle time is one minute.

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