GE VAT2000 User Manual

7. Options
7-6
7-4 Dynamic braking (DBR).
The VAT2000 includes a dynamic braking feature in drives up to U2KN07K5S and U2KX07K5S . For
larger drives the dynamic braking is achieved by using external modules
7-4-1 Units U2KN07K5S and smaller, and U2KX07K5S and smaller
These drives include a dynamic braking feature and a DB resistor as standard. The DBR device, allows
operation cycle of 10% ED as shown in Fig. 7-2.
When using the dynamic braking option, set parameter B18-1, and C31-1, accordingly.
T
t2t1
Speed
Fig. 7-2
(1) Unit built-in DBR
The wiring of resistor built into the unit is shown in Fig. 7-3, and ratings are shown in table 7-3
Because of space restrictions, these resistors do not allow 100% of braking torque in some cases.
Table 7-3
Device
type
U2KN
Resistance
capacity
(W)
Resistance
value
(
Ω
)
Braking
torque
(%) (1)
Max.
t1
(SEC)
00K4S 120 220 180 30
00K7S 120 220 100 30
01K5S 120 220 50 30
02K2S 120 180 40 20
04K0S 120 110 40 10
05K5S 120 91 30 10
07K5S 120 91 25 10
(Note 1) The braking torque is given for constant torque ratings. When using variable torque ratings, the
braking torque is the value given for one frame smaller drive.
Device
type
U2KX
Resistance
capacity
(W)
Resistance
value
(
Ω
)
Braking
torque
(%)
Max.
t1
(SEC)
00K4S 120 430 300 10
00K7S 120 430 200 10
01K5S 120 430 100 10
02K2S 120 430 65 10
04K0S 120 430 40 10
05K5S 120 430 25 10
07K5S 120 430 20 10
T ≥10min
t1 + t2+ ... ≤ 1min.

GE VAT2000 Specifications

General

Brand	GE
Model	VAT2000
Category	Controller
Language	English