Emerson Unidrive M700 Installation Manual page 61

The resistor combinations shown in Table 4-9 below can be made using one or more brake resistor/s
from Table 4-8 above. Pr 10.030, Pr 10.031 and Pr 10.061 should be set as per information provided
in Table 4-8 above. Refer to description of Pr 10.030, Pr 10.031 and Pr 10.061 in section
4.10.3 Braking resistor software overload protection on page 62 for more information.
Table 4-9 Resistor combinations
Heavy
duty
Model
kW
03200050 0.7
03200066 1.1
03200080 1.5
03200106 2.2
03400025 0.7
03400031 1.1
03400045 1.5
03400062 2.2
03400078 3.0
03400100 4.0
04200137 3.0
04200185 4.0
04400150 5.5
04400172 7.5
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 4-8 shows a typical circuit arrangement.
Figure 4-8 Typical protection circuit for a braking resistor
See Figure 4-1 on page 46 and Figure 4-2 on page 47 for the location of the +DC and braking
resistor connections.
Unidrive M/HS Frame 3 and 4 Power Installation Guide
Issue Number: 3
150 % 200 %
Peak Peak
power power
Ω Ω
135 101
92 69
68 51
46 34
540 405
370 277
271 203
184 138
135 101
101 76
34 25
26 19
74 56
54 40
Main contactor
power supply
Stop
Start /
Reset
Braking Resistor
voltage Min. value
Vdc
Ω
390 22
74
780
50
390 18
780 37
Optional
EMC
filter
Drive
Thermal
protection
device
+DC
BR
Braking resistor
Resistor
combinations
Ω
1 x 40 = 40
2 x 80 = 40 (when
connected in parallel)
1 x 80 = 80
2 x 40 = 80 (when
connected in series)
1 x 20 = 20
2 x 40 = 20 (when
connected in parallel)
1 x 40 = 40
2 x 80 = 40 (when
connected in parallel)
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