Delta C2000 Series User Manual page 111

Chapter 7 Optional AccessoriesC2000
Applicable
Motor (kW)
Braking
LD ND HD Torque
[kg-m]
450 355 315 240.3
560 450 355 304.7
630 630 630 426.5
Calculation for 125% brake toque: (kW) * 125% * 0.8; where 0.8 is motor efficiency.
*1.
Because of the limited resistor power, the longest operation time for 10% ED is 10 seconds (on: 10 seconds / off: 90 seconds).
*2. Refer to Chapter 7 "Brake Module and Brake Resistors" in application manual for "Operation Duration & ED" vs. "Braking
Current".
*3. For heat dissipation, a resistor of 400W or lower should be fixed to the frame and maintain the surface temperature below
250°C; a resistor of 1000W and above should maintain the surface temperature below 350°C.
*4. Please refer to VFDB series Braking Module Instruction for more detail on braking resistor.
NOTE
1. Specification and appearance of brake resistors
1-1 Wirewound resistor: for 1000W and above. Refer to the following appearance of wirewound resistor
(Figure7-1) and its model and specification comparison table (Table 7-5) for details.
K
＊
1 125% Braking Torque / 10%ED
Brake
＊ Braking Resistor series for
3
Unit
each Brake Unit
VFDB
6200*2 BR1K5W027*14
6200*3 BR1K5W027*12
6200*4 BR1K5W027*12
H
L
Resistor value
spec. for each
AC motor drive
2 series,
42000W 3.9Ω
7 parallel
2 series,
54000W 3.0Ω
6 parallel
2 series,
72000W 2.3Ω
6 parallel
E
A
B
7-4
＊
2 Max. Braking Torque
Max.
Total Min.
Total
Braking Resistor
Braking
Current Value
Current
[A] [Ω]
[A]
290.4 3.5 324
373.3 2.3 486
497.8 1.7 648
Table 7-4
Figure 7-1
Table 7-5
Peak
Power
[kW]
362.9
544.3
725.8