FMX TD400-2015-3PH - Page 33

3-15
3.17 Braking resistors
Note:
1: TD400-2025-3PH and TD400-4030-3PH models have the option to use either the internal braking transistor or an
external braking unit when additional braking power is required. See section 3.9 for wiring details.
It is recommended to use an external braking unit when the required resistor wattage is 10% greater than the
resistor specified in the table above. Use the Braking Resistor Wattage formula below to determine resistor size.
AC Drive Braking Unit Resistor Unit
Braking resistor
Specification
Duty
Cycle
Braking
torque
Minimum
Resistance
V HP KW Model
Qty
Req.
Model
Qty
Req.
(Ω) (W) (%) (%) (Ω) (W)
220V
1Ph/
3Ph
0.5 0.4 Includes Transistor DBR-2001-C 1 200 150 10 214 70 210
1 0.75 Includes Transistor DBR-2001-C 1 200 150 10 117 70 210
2 1.5 Includes Transistor DBR-2002-C 1 100 150 10 117 70 210
3 2.2 Includes Transistor DBR-2003-C 1 70 260 10 112 70 210
220V
3Ph
5 4 Includes Transistor DBR-2005-C 1 40 390 10 117 30 500
7.5 5.5 Includes Transistor DBR-27P5-C 1 30 520 10 123 25 600
10 7.5 Includes Transistor DBR-2010-C 1 20 780 10 117 15 1000
15 11 Includes Transistor DBR-2015 1 13.6 2400 10 100 10 1500
20 15 Includes Transistor DBR-2015 1 13.6 2400 10 100 10 1500
25 18.5 Note:1 – DBR-2025 1
8 4800 10 119 7 2400
30 22 TBU-230 1 DBR-2030 1 6.8 4800 10 117 5.5 3000
40 30 TBU-230 2 DBR-2040-KIT 2 10 3000 10 119 5.5 3000
480V
3Ph
1 0.75 Includes Transistor DBR-4001-C 1 750 150 10 123 120 500
2 1.5 Includes Transistor DBR-4002-C 1 400 150 10 117 120 500
3 2.2 Includes Transistor DBR-4003-C 1 250 260 10 123 10 600
5 4 Includes Transistor DBR-4005-C 1 150 400 10 123 60 1000
7.5 5.5 Includes Transistor DBR-47P5-C 1 130 600 10 123 50 1200
10 7.5 Includes Transistor DBR-4010-C 1 100 800 10 117 50 1200
15 11 Includes Transistor DBR-4015 1 50 1600 10 149 50 1200
20 15 Includes Transistor DBR-4020 1 40 1500 10 100 25 2400
25 18.5 Includes Transistor DBR-4025 1 32 4800 10 120 15 4000
30 22 Note:1 – DBR-4030 1 27.2 4800 10 117 14 4800
40 30 TBU-430 1 DBR-4040 1 20 6000 10 117 19.2 3600
50 37 TBU-430 2 DBR-4050-KIT 2 32 4800 10 117 19.2 3600
60 45 TBU-430 2 DBR-4060-KIT 2 27.2 4800 10 117 19.2 3600
75 55 TBU-430 2 DBR-4075-KIT 2 20 6000 10 117 19.2 3600
Calculating Braking Resistor Wattage
W=(Vpnb * Vpnb) * ED% / Rmin.
W: braking resistor power (watts)
Vpnb: braking voltage (220V=380VDC, 440V=760VDC)
ED%
：
braking duty cycle
Rmin
：
braking resistor minimum value (ohms)