Alpha 6000 - Brake Unit and Resistor; Motor Power and Brake Resistor Selection

Chapter 7 Peripheral Equipments
176
closer to the inverter. The grounding of the filter should not employ thin and long wire,
but directly connect the filter housing to the back plate of metal case where the paint has
been scraped off. This grounding method through surface contacting can effectively
reduce the HF grounding resistance, and the filter is capable of maximizing its potential
effect.
7.2.3 Brake Unit and Resistor
The inverter series of 3015GB/3018PB and the below models have built-in brake
function. If users want to increase their brake torque, the only thing to do is to mount
external brake resistor. Built-in brake function isn’t applied for 3018G/3022P and above
models. If users want to increase the system brake torque, external brake unit should be
mounted. The brake unit includes brake control, drive and the discharge part of the
resistance. Brake control part should be adjusted according to the over-voltage
protection setting. If the discharge resistor with over-temperature protection, it is
recommended that, the control contact should be connected to the main control circuit.
Table of brake resistor and power for hundred-percent brake torque:
Table 7-4 Motor power and brake resistor selection
Voltage
(V)
Motor
Power
(kW)
Resistance
(Ω)
Resistor
power
(kW)
Voltage
(V)
Motor
Power
(kW)
Resistance
(Ω)
Resistor
Power
(kW)
Single-
phase
220
0.4 200 0.1
Three-p
hase
380
45 13.6 9
0.75 150 0.2
55 20/2 12
1.5 100 0.4
75 13.6/2 18
2.2 75 0.5
93 20/3 18
Three-p
hase
380
0.75 300 0.4
110 20/3 18
1.5 300 0.4 132 20/4 24
2.2 200 0.5
160 13.6/4 36
4 200 0.5
185 13.6/4 36
5.5 100 0.8
200 13.6/5 45
7.5 75 0.80 220 13.6/5 45
11 50 1 245 13.6/5 45
15 40 1.5 280 13.6/6 54
18.5 30 4 315 13.6/6 54
22 30 4 355 13.6/7 63
30 20 6 400 13.6/8 72
37 16 9 500 13.6/8 90