Selecting a braking resistor, 2 selecting a braking resistor – Rockwell Automation GV3000/SE AC Bookshelf Drive Hardware Ref, Installation, and Troubleshooting User Manual
Page 67
Wiring Optional User-Supplied Braking Resistors
8-3
8.2 Selecting a Braking Resistor
The maximum braking power is defined by the maximum braking current and the
maximum DC voltage (750 V). To determine the correct braking resistor for your drive,
refer to table 8.2.
Table 8.2 – Selecting a Braking Resistor
Drive M/N
Braking Power
1
Maximum
Braking
Current
Power
Module Input
Voltage
Turn-On
Voltage
Turn-Off
Voltage
Minimum
Allowed
External
Braking
Resistor
Continuous
25% Duty
Cycle
31ER40xx
31ET40xx
4.5 kW
4.5 kW
6 A
460 V
750 V
720 V
125.0
Ω
38ER40xx
38ET40xx
4.5 kW
4.5 kW
6 A
460 V
750 V
720 V
125.0
Ω
55ER40xx
55ET40xx
4.5 kW
4.5 kW
6 A
460 V
750 V
720 V
125.0
Ω
85ER40xx
85ET40xx
4.5 kW
4.5 kW
6 A
460 V
750 V
720 V
125.0
Ω
126ER40xx
126ET40xx
7.5 kW
7.5 kW
10 A
460 V
750 V
720 V
75.0
Ω
150ER40xx
150ET40xx
7.5 kW
7.5 kW
10 A
460 V
750 V
720 V
75.0
Ω
240ER40xx
240ET40xx
11 kW
11 kW
15 A
460 V
750 V
720 V
50.0
Ω
300ER40xx
300ET40xx
15 kW
15 kW
20 A
460 V
750 V
720 V
37.5
Ω
430ER40xx
430ET40xx
22 kW
22 kW
30 A
460 V
750 V
720 V
25.0
Ω
1
The turn-on and the turn-off voltage and the braking power is proportional to the AC line voltage (specified
in parameter H.021 or U.018).