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vacon connections
4
4.5 Dynamic Braking
The Vacon 500x 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: For Size 4 (45-75 kW/60-100 HP) and Size 5 (90-132 kW/125-200 HP) models, additional external
dynamic braking requires a kit that provides the connections to the braking transistors. The XDBKITS4 and
XDBKITS5 kits can be purchased through local distributors.
If an external resistor is used for dynamic braking, the internal resistor must be disconnected. To install
an external resistor, first disconnect the internal DB resistor (or resistors in 460 and 575 Vac models) and
properly terminate the wires leading to it. Then connect the external resistor fast-on terminals where the
internal resistor had been connected.
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 Plc Electronic Application Engineering for further assistance with other possible sizing
limitations.
for information about dynamic braking capacity for each Vacon 500x model.
0086 5
125
100
0105 5
150
125
0140 5
200
175
0168 5
225
200
0205 5
250
225
0240 5
300
300
Model
KW
Standard
Resistance
Standard DB %
of Drive
Min. Allowed
Res.
Max. Peak
Watts
Max. Ext. DB % of
Drive
0009 5
3.7
120
136%
100
6,084
163%
0012 5
5.5
120
91%
75
8,112
145%
0016 5
7.5
120
68%
75
8,112
109%
0023 5
11
120
45%
47
12,944
116%
0031 5
15
120
34%
47
12,944
87%
0037 5
18
120
27%
47
12,944
69%
0043 5
22
120
23%
39
15,600
70%
0061 5
29.8
60
34%
20
30,420
102%
0071 5
37.3
60
27%
20
30,420
82%
0086 5
45
60
23%
15
40,560
91%
0105 5
55
60
18%
10
60,840
109%
0140 5
75
60
14%
10
60,840
82%
0168 5
90
60
11%
10
60,840
65%
0205 5
110
60
9%
10
60,840
54%
0240 5
132
60
7%
10
60,840
41%
Table 6: Vacon 500x Dynamic Braking Capacity
Model Number
Fuse Size
380 Vac
JJS
Fuse Size
460 Vac
JJS
Table 5: Fuse Ratings
Summary of Contents for 500X
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