Delta C2000 series User Manual page 71

460V
Applicable
Motor
Braking
Torque Brake
HP kW
(kg-m) Unit
215 160 108.3 4160*1 BR1K5W012*12
250 185 125.3 4185*1 BR1K5W012*14
300 220 148.9 4110*2 BR1K2W015*10
375 280 189.6 4160*2 BR1K5W012*12
425 315 213.3 4160*2 BR1K5W012*12
475 355 240.3 4185*2 BR1K5W012*14
1
*
Calculation for 125% brake toque: (kw)*125%*0.8; where 0.8 is motor efficiency.
Because there is a resistor limit of power consumption, the longest operation time for 10%ED is 10sec (on: 10sec/ off:
90sec).
2
*
Please refer to the Brake Performance Curve 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
50℃; a resistor of 1000W and above should maintain the surface temperature below 350 .
4
*
Please refer to VFDB series Braking Module Instruction for more detail on braking resistor.
NOTE
1. Definition for Brake Usage ED%
Explanation: The definition of the brake usage ED (%) is for assurance of enough time for the brake unit and brake resistor
to dissipate away heat generated by braking. When the brake resistor heats up, the resistance would increase with
temperature, and brake torque would decrease accordingly. Recommended cycle time is one minute.
For safety concern, install an overload relay (O.L) between the brake unit and the brake resistor in conjunction with the
magnetic contactor (MC) prior to the drive for abnormal protection. The purpose of installing the thermal overload relay is to
protect the brake resistor from damage due to frequent brake, or due to brake unit keeping operating resulted from unusual
high input voltage. Under such circumstance, just turn off the power to prevent damaging the brake resistor.
NFB
R/L1
S/L2
T/L3
O.L.
MC
S A
Varist or
Thermal relay
or Temperature Switch
Trip Contact
When AC Drive is equipped with a DC reactor, please rea d user m anual to kn ow th
wiring m ethod o f input circuit of brake unit +(P).
Do Not conn ect input circuit -(N) to the neu tral poin t of the power system .
1
* 125%Braking Torque 10%ED
3
* Braking Resistor series for
each Brake Unit
6 parallel,
2 series
7 parallel,
2 series
5 parallel,
2 series
6 parallel,
2 series
6 parallel,
2 series
7 parallel,
2 series
V FD
MC
R/L1
U/T1
S/L2
V /T2
T/L3
W/T3
+(P )
- (N)
+
(P)
Brake unit
VFDB
XXXX
MASTER
。
Chapter 7 Optional Accessories|C2000 Series
Resistor
value spec.
Braking
for each AC
Currnet (A)
motor Drive
18000W4Ω
21000W3.4Ω
24000W3Ω
36000W2Ω
36000W2Ω
42000W1.7Ω
MOTOR
IM
T hermal relay
-
B1
(N ) (P)
Brake
O.L.
Resistor
B2
MASTER
M1 M2 Temperature
switch
7-3
2
* Max. Brake Torque
Total Min. Max. Total
Resistor Braking
Value (Ω) Current (A)
190 4.0 190
225 3.4 225
252 3.0 252
380 2.0 380
380 2.0 380
450 1.7 450
℃
T hermal relay
-
+
B1
(N)
Brake
O.L.
Resistor
Brake unit
VFDB
XXXX
B2
22
Parallel Serie
/
M1 M2
Temperature switch
Peak
Power
(kW)
144.4
172.1
190.5
288.8
288.8
344.2