Delta MH300 Series - Page 68

Chapter 7 Optional AccessoriesMH300
7-3
460V, three-phase
Model
Applicable
Motor
125% Braking Torque / 10% ED *
1
Max. Braking Torque
HP kW
Braking
Torque*
2
(kg-m)
Braking Unit
Equivalent
Resistance for
each AC motor
Drive
Braking Resistor for
each Brake Unit
Braking
Current
(A)
Min.
Resistor
Value
(Ω)
Max.
Total
Braking
Current
(A)
Max.
Peak
Power
(kW)
VFDB x Q’ty
Part No. *
3
Amount Usage
VFD1A5MH43XNSXX
VFD1A5MH43AFSAA
0.5 0.4 0.3 - 80W 750Ω BR080W750 1 - 1 380.0 2 1.5
VFD3A0MH43XNSXX
VFD3A0MH43AFSAA
1 0.75 0.5 - 80W 750Ω BR080W750 1 - 1 190.0 4 3.0
VFD4A2MH43XNSXX
VFD4A2MH43AFSAA
2 1.5 1 - 200W 360Ω BR200W360 1 - 2.1 126.7 6 4.6
VFD5A7MH43XNSXX
VFD5A7MH43AFSAA
3 2.2 1.5 - 300W 250Ω BR300W250 1 - 3 108.6 7 5.3
VFD9A0MH43XNSXX
VFD9A0MH43AFSAA
5 3.7 2.5 - 400W 150Ω BR400W150 1 - 5.1 84.4 9 6.8
VFD13AMH43XNSXX
VFD13AMH43AFSAA
7.5 5.5 3.7 - 1000W 75Ω BR1K0W075 1 - 10.2 50.7 15 11.4
VFD17AMH43XNSXX
VFD17AMH43AFSAA
10 7.5 5.1 - 1000W 75Ω BR1K0W075 1 - 10.2 40.0 19 14.4
VFD25AMH43XNSXX
VFD25AMH43AFSAA
15 11 7.4 - 1500W 43Ω BR1K5W043 1 - 17.6 33.0 23 17.5
VFD32AMH43XNSXX
VFD32AMH43AFSAA
20 15 10.2 - 2000W 32Ω BR1K0W016 2
2 in
series
24 26.2 29 22.0
VFD38AMH43XNSXX
VFD38AMH43AFSAA
25 18 12.2 - 2000W 32Ω BR1K0W016 2
2 in
series
24 26.2 29 22.0
VFD45AMH43XNSXX
VFD45AMH43AFSAA
30 22 14.9 - 3000W 26Ω BR1K5W013 2
2 in
series
29 23.0 33 25.1
VFD60AMH43AFSAA
VFD60AMH43ANSAA
40 30 24.4 - 3000 W 20 Ω BR1K5W040 2
2 in
parallel
38.0 15.2 50 38.0
VFD75AMH43AFSAA
VFD75AMH43ANSAA
50 37 30.1 4045 x 1 4800W 15 Ω BR1K2W015 4
2 in
series
2 in
parallel
50.7 12.7 60 45.5
VFD91AMH43AFSAA
VFD91AMH43ANSAA
60 45 36.6 4045 x 1 6000 W 13 Ω BR1K5W013 4
2 in
series
2 in
parallel
58.5 12.7 60 45.5
VFD112MH43AFSAA
VFD112MH43ANSAA
75 55 44.7 4030 x 2 8000 W 10.2 Ω BR1K0W5P1 4
In
series
74.5 9.5 80 60.8
VFD150MH43AFSAA
VFD150MH43ANSAA
100 75 60.7 4045 x 2 9600 W 7.5 Ω BR1K2W015 4
2 in
series
2 in
parallel
101.3 6.3 121 91.7
Table 7-4
*
1
: Calculation for standard braking torque is (kW) x 125% x 0.8; where 0.8 is the motor efficiency.
Because of the limited resistor power, the longest operation time for 10% ED is 10 seconds (ON: 10 seconds /
OFF: 90 seconds).
*
2
: Calculation for braking resistor is based on a four-pole motor (1800 rpm).
*
3
: Resistors of 400 W or lower should be fixed to the frame and at a surface temperature below 250°C.
Resistors of 1000 W and above should be fixed on a surface with temperature below 350°C. (If the surface
temperature is higher than the temperature limit, install extra cooling system or increase the size of the resistor)
NOTE:
1. Select the resistance value, power and brake usage (ED %) according to Delta rules.
Definition for Brake Usage ED%
Fig. 7-1
ED% = T1 / T0 x 100 (%)
Explanation: ED (%) is defined to allow enough time for
the brake unit and brake resistor to
dissipate the heat generated by braking.
When the brake resistor gets hot, the
resistance increases with the temperature,
and the braking torque decreases
accordingly.