Inovance MD880 Series - Selection of Braking Unit

6 Options
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Table 6-3 Typical values of braking frequency in di󶍽erent applications
Application Elevator
Winding and
unwinding
Centrifuge
Occasional
braking load
General
application
Braking
Frequency
20% to 30% 20% to 30% 50% to 60% 5% 10%
6.3.3 Selection of Braking Unit
Table 6-4 Selection of braking unit for the MD880-01S series AC drive
AC Drive
Model
Applicable
Motor
(kW)
Braking Unit
125% Braking Torque
(10% ED; Max. 10s)
Remarks
Minimum
Braking
Resistance
(Ω)
Model QTY
Braking Resistor
Speci󶍾cations
QTY
MD880-01S-
0012-4-B
3.7
Built-in
740 W 150 Ω 1
AC drive models
ending with
letter "B"
32
MD880-01S-
0017-4-B
5.5 1100 W 100 Ω 1 32
MD880-01S-
0024-4-B
7.5 1500 W 75 Ω 1 32
MD880-01S-
0033-4-B
11 2200 W 50 Ω 1 20
MD880-01S-
0038-4-B
15 3000 W 38 Ω 1 20
MD880-01S-
0048-4-B
18.5 4000 W 32 Ω 1 24
MD880-01S-
0060-4-B
22 4500 W 27 Ω 1 24
MD880-01S-
0078-4-B
30 6000 W 20 Ω 1 19.2
MD880-01S-
0094-4-B
37 7000 W 16 Ω 1 14.8
MD880-01S-
0116-4-B
45 9000 W 13 Ω 1 12.8
MD880-01S-
0149-4-B
55 11000 W 10.5 Ω 1 9.6
MD880-01S-
0183-4-B
75 15000 W 7.7 Ω 1 6.8
MD880-
01S-0217-4
90
MDBUN-
60-T
2 9000 W 10.0 Ω 2
Input voltage ≤
440 V AC
9.3 × 2
90
MDBUN-
60-5T
2 9000 W 12.8 Ω 2
Input voltage >
440 VAC
10.5 × 2