Delta EB3000 Series User Manual page 393

Chapter 11 Optional AccessoriesEB3000
PM 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
VFD075ED43BE
460V
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 30% ED is 30 seconds (ON: 30
seconds / OFF: 70 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
NOTE:
1. Select the resistance value, power and brake usage (ED %) according to Delta rules.
Definition for Brake Usage ED%
For safety, install a thermal overload relay between the brake unit and the brake resistor in conjunction with the
magnetic contactor (MC) at the drive mains input for additional protection. The thermal overload relay protects
the brake resistor from overheat damage due to frequent or continuous braking. Under such circumstances,
turn off the power to prevent damage to the brake resistor and the drive. NOTE: Never use it to disconnect the
brake resistor.
125% Braking Torque/30% ED*
Brake Unit
Braking
Torque*
2
VFDB #
(kg-m)
1.5 - -
2.5 - -
2.7 - -
3.7 - -
5.1 - -
7.5 - -
10.1 - -
12.5 - -
).
DC
1
Delta's Brake Resistor *3
Configurat
Part No. #
ion
BR1K0W050 1 -
BR1K0W016 2 2 in series
BR1K0W050 2 2 in series
BR1K0W050 2 2 in series
BR1K0W020 3 3 in series
2 in series
BR1K0W050 4
2 parallel
2 in series
BR1K5W039 4
2 parallel
2 in series
BR1k2W039 6
3 parallel
11-4
Max. Braking Torque
Braking Min. Max. Total
Current Resistor Braking
(A) *4 Value (Ω) Current (A)
7.6 38.0 10.0
11.9 19.0 20.0
7.6 54.3 14.0
7.6 48.4 15.7
12.7 39.4 19.3
15.2 30.8 24.7
19.5 25.0 30.4
29.2 20.8 36.5
Peak
Power
(kW)
3.8
7.6
10.6
11.9
14.7
18.8
23.1
27.7
:
AC