Vacon 50X, User Manual

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31 vacon connections
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4
4.4 Dynamic Braking
The Vacon 50X AC drive is supplied with an integrated dynamic braking (DB) resistor, and is designed to
have adequate dynamic braking for most applications. In cases where short stopping times or high inertia
loads require additional braking capacity, install an external resistor.
NOTE: External braking cannot be added to Size 0 models. For Size 4 (45–75 kW) and Size 5 (90–
150 kW) models, additional external dynamic braking requires a kit that provides the connec-
tions to the braking transistors. The XDBKITS4 and XDBKITS5 kits can be purchased through
VACON.
• Starting from size 1 the internal DB resistor can be replaced by an external DB
resistor.
• The terminal identifications of the DB resistor are “B+” and “DB”.
• On the size 1 the DB resistor is connected by fast-on terminals 6.35 mm (see Figure
9 on page 28).
• Starting from size 2 the DB resistor is connected by 2 separate terminals (see
Figure 3 on page 29). The internal DB resistor is connected by fast-on terminals “J3/
DB” and “J4/B+”, which are placed on the power board (right and left side of the
display).
To install an external resistor, first disconnect the internal DB resistor and properly terminate the wires
leading to it. Connect now the external resistance over the connections planned for it.
Changes to Parameter 410 must be made when using external DB resistors.
Verify with the manufacturer of the selected resistor that the resistor is appropriate for your application.
Contact VACON Application Engineering for further assistance with other possible sizing limitations.
Refer to Table 9 below for information about dynamic braking capacity for each Vacon 50X model.
Model kW
Standard
Resistance
(
Ω
)
Standard
DB %
of Drive
Min. Allowed
Res. (
Ω
)
Max. Peak
Watts Max. Ext. DB %
of Drive
0004 2 0,75
125 164% 125 1,223 164%
0007 2 1,5
125 82% 125 1,223 82%
0010 2 2,2
125 55% 125 1,223 55%
0015 2 4,0
60 68% 43 3,555 95%
0022 2 5,5
60 45% 30 5,096 91%
0028 2 7,5
60 34% 27 5,662 76%
0042 2 11
60 23% 20 7,644 68%
0054 2 15
30 34% 10 15,288 102%
0068 2 18,5
30 27% 10 15,288 82%
0002 5
0,75 500 163% 270 2253 302%
0004 5
1,5 500 82% 270 2253 151%
0005 5
2,2 500 54% 270 2253 101%
0009 5
4,0 120 136% 100 6084 163%
0012 5
5,5 120 91% 75 8112 145%
0016 5
7,5 120 68% 75 8112 109%
0023 5
11 120 45% 57 12944 116%
0031 5
15 120 34% 47 12944 87%
0037 5
18,5 120 27% 47 12944 69%
0043
22 120 23% 39 15600 70%
Table 9:Vacon 50X Dynamic Braking Capacity