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Unidrive M/HS Frame 5 to 6 Power Installation Guide
65
Issue Number: 9
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Table 4-9 Resistor combinations
Thermal protection circuit for the braking resistor
The thermal protection circuit must disconnect the AC supply from the drive if the resistor becomes
overloaded due to a fault. Figure 4-9 shows a typical circuit arrangement.
Figure 4-9 Typical protection circuit for a braking resistor
See Figure 4-1 on page 49 and Figure 4-2 on page 50 for the location of the +DC and braking
resistor connections.
Model
Heavy duty
150 %
Peak power
Braking
voltage
Resistor
Min. value
Resistor
combinations
kW
Ω
Vdc
Ω
Ω
05200250
5.5
19
390
19
1 x 20 = 20
2 x 40 = 20 (when
connected in parallel)
05400270
11.0
37
780
38
1 x 40 = 40
2 x 80 = 40 (when
connected in parallel)
05400300
15.0
27
22
1 x 40 = 40
2 x 80 = 40 (when
connected in parallel)
05500030
1.5
384
930
80
1 x 80 = 80
2 x 40 = 80 (when
connected in parallel)
05500040
2.2
263
05500069
4.0
144
06200330
7.5
13.3
390
10
2 x 20 = 10 (when
connected in parallel)
4 x 40 = 10 (when
connected in parallel)
06200440
11.0
9.3
06400350
15.0
27
780
20
1 x 20 = 20
2 x 40 = 20 (when
connected in parallel)
4 x 80 = 20 (when
connected in parallel)
06400420
18.5
22
06400470
22.0
18.4
06500100
5.5
104
930
15
1 x 20 = 20
2 x 40 = 20 (when
connected in parallel)
3 x 40 = 13 (when
connected in parallel)
4 x 80 = 20 (when
connected in parallel)
06500150
7.5
77
06500190
11.0
52
06500230
15.0
39
06500290
18.5
33
06500350
22.0
27
Optional
EMC
filter
Stop
Start /
Reset
Thermal
protection
device
Braking resistor
Drive
Main contactor
power supply
+DC
BR
Summary of Contents for 5200250
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