Brake Resistors - Danfoss VLT AutomationDrive FC 300 Design Manual

How to Order
Type
PC software
MCT 10
MCT 10
MCT 10
MCT 10
MCT 10
MCT 10
MCT 10
5 5
Table 5.8 Software Options
Options can be ordered as factory built-in options. For information on serial communication bus and application option compatibility with older
software versions, contact the Danfoss supplier.

5.2.2 Brake Resistors

The requirements for brake resistors vary in different applications. Always consult the VLT FC Series Brake Resistor Design
Guide before selecting brake resistors. Critical data includes:
•
Brake duty cycle, resistance and brake resistor power capability
•
Adjustable frequency drive minimum resistance
The tables below present typical data for two common application types. 10% is typically used for occasional braking of
horizontal loads. 40% is typically used in lifting applications where the load must be stopped every time it is lowered.
FC 302 [T5]
Table 5.9 Brake Chopper Data, 380–500 V
R =Minimum brake resistance that can be used with this adjustable frequency drive. If the adjustable frequency drive includes multiple brake
min
choppers, the resistance value is the sum of all resisters in parallel.
R
=Nominal resistance required to achieve 150% braking torque.
br,nom
R =Resistance value of the recommended Danfoss brake resistor.
rec
1)
Larger adjustable frequency drives include multiple inverter modules with a brake chopper in each inverter. Equal resistors should be connected
to each brake chopper.
96
Description
MCT 10 Set-up Software - 1 user
MCT 10 Set-up Software - 5 users
MCT 10 Set-up Software - 10 users
MCT 10 Set-up Software - 25 users
MCT 10 Set-up Software - 50 users
MCT 10 Set-up Software - 100 users
MCT 10 Set-up Software - unlimited users
Pm (HO) (hp [kW])
N90K 125 [90]
N110 150 [110]
N132 175 [132]
N160 225 [160]
N200 275 [200]
N250 350 [250]
P315 425 [315]
P355 475 [355]
P400 550 [400]
P450 600 [450]
P500 650 [500]
P560 750 [560]
P630 850 [630]
P710 950 [710]
P800 1075 [800]
Danfoss A/S © Rev. 2014-02-10 All rights reserved.
Design Guide
380–500 V AC
Number of brake choppers
1
1
1
1
1
1
1
1
1
2
2
2
2
3
3
Ordering no.
130B1000
130B1001
130B1002
130B1003
130B1004
130B1005
130B1006
(1)
R R
min
3.6
3.0
2.5
2.0
1.6
1.2
1.2
1.2
1.1
0.9
0.9
0.8
0.7
0.6
0.5
br,nom
3.8
3.2
2.5
2.0
1.7
1.4
1.5
1.3
1.1
1.0
0.91
0.82
0.72
0.64
0.57
MG34S222