Delta EB3000 Series User Manual page 392

IM Elevator System (Using Delta's Brake Resistor)
Applicable Delta's Motor
Drive
HP Model
VFD022ED21B
3
VFD022ED21BE
230V
VFD037ED21B
5
VFD037ED21BE
VFD040ED43B
5
VFD040ED43BE
VFD055ED43B
7.5
VFD055ED43BE
VFD075ED43B
10
460V VFD075ED43BE
VFD110ED43B
15
VFD110ED43BE
VFD150ED43B
20
VFD150ED43BE
25 VFD185ED43B
* 1 : Calculation of 125% braking torque: (kW)*125%*0.8; where 0.8 is the motor efficiency.
Since there is a resistor power consumption limit, the longest operation time for 10% ED is 10 seconds (ON:
10 seconds / OFF: 90 seconds).
* 2 : The calculation of the brake resistor is based on a four-pole motor (1800 rpm).
* 3 : To dissipate heat, mount a resistor of 400 W or lower to a frame to keep the surface temperature below 250°C
(482°F). Fix a resistor of 1000 W or higher to a surface to keep the surface temperature below 600°C (1112°F).
(If the resistor temperature is higher than 350°C, install extra cooling. If the resistor temperature is higher than
the temperature limit, increase the size of the resistor.)
* 4 : The calculation of the braking current is based on Delta's brake resistor and default braking voltage (220V
380V ; 440V : 760V
DC AC
125% Braking Torque/10% ED*
Brake Unit
Braking
Torque*
2
VFDB #
(kg-m)
1.5 - - BR300W070
2.5 - - BR500W030
2.7 - - BR500W100
3.7 - - BR1K0W075
5.1 - - BR1K0W075
7.5 - - BR1K5W043
10.1 - - BR1K0W016
12.5 - - BR1K0W016
).
DC
Chapter 11 Optional AccessoriesEB3000
1
Delta's Brake Resistor *3
Configurat
Part No. #
ion
1 -
1 -
1 -
1 -
1 -
1 -
2 2 in series
2 2 in series
11-3
Max. Braking Torque
Braking Min. Max. Total
Current Resistor Braking
(A) *4 Value (Ω) Current (A)
5.4 38.0 10.0
12.7 19.0 20.0
7.6 54.3 14.0
10.1 48.4 15.7
10.1 39.4 19.3
17.7 30.8 24.7
23.8 25.0 30.4
23.8 20.8 36.5
Peak
Power
(kW)
3.8
7.6
10.6
11.9
14.7
18.8
23.1
27.7
:
AC