39
DYNAMIC BRAKING
4 - CONNECTIONS
4.4 Dynamic Braking
The RSi S4 Sensorless Vector 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.
z
NOTE:
Internal DB resistors are connected with fast-on terminals up to Frame size 3.
z
NOTE:
Consult Benshaw if you are installing external resistors.
To install an external resistor, first disconnect the internal DB resistor (or resistors in
460 and 600 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 FUN 05 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 Benshaw for further assistance with other possible sizing limitations.
z
NOTE:
It’s recommended to have thermal protection wired back to a digital input to protect the DBR.
Model
Frame
Size
HP
KW
Std
Resistance Qty
Standard
DB
% of
Drive
Min. Allowed
Res.
Max. Peak
Watts
Max.Ext.
DB% of
Drive
1S010*
0
1
.75
125
1
164%
125
1,223
164%
RSi001S42W*
0
1
.75
125
1
164%
125
1,223
164%
RSi002S42W*
0
2
1.5
125
1
82%
125
1,223
82%
RSi003S42W*
0
3
2.2
125
1
55%
125
1,223
55%
RSi005S42W
1
5
3.7
60
1
68%
43
3,555
95%
RSi007S42W
1
7
5.5
60
1
45%
30
5,096
91%
RSi010S42W
2
10
7.5
60
1
34%
27
5,662
76%
RSi015S42W
2
15
11
60
1
23%
20
7,644
68%
RSi020S42W
3
20
15
30
2x60
34%
10
15,288
102%
RSi025S42W
3
25
18
30
2x60
27%
10
15,288
82%
RSi001S44W*
0
1
.75
500
1
163%
270
2,253
302%
RSi002S44W*
0
2
1.5
500
1
82%
270
2,253
151%
RSi003S44W*
0
3
2.2
500
1
54%
270
2,253
101%
RSi005S44W
1
5
3.7
120
2x60
136%
100
6,084
163%
RSi007S44W
1
7
5.5
120
2x60
91%
75
8,112
145%
RSi010S44W
1
10
7.5
120
2x60
68%
75
8,112
109%
RSi015S44W
2
15
11
120
2x60
45%
57
12,944
116%
RSi020S44W
2
20
15
120
2x60
34%
47
12,944
87%
RSi025S44W
2
25
18
120
2x60
27%
47
12,944
69%
RSi030S44W
2
30
22
120
2x60
23%
39
15,600
70%
RSi040S44W
3
40
30
60
4x60
34%
20
30,420
102%
RSi050S44W
3
50
37
60
4x60
27%
20
30,420
82%
RSi060S44W
4
60
45
60
4x60
23%
15
40,560
91%
S4 Dynamic Braking Capacity
Summary of Contents for RSi S4 Series
Page 4: ......
Page 9: ...1 1 Introduction...
Page 16: ...8 1 INTRODUCTION NOTES...
Page 17: ...9 2 Technical Specifications...
Page 28: ...20 2 TECHNICAL SPECIFICATIONS NOTES...
Page 29: ...21 3 Installation...
Page 37: ...29 4 Connections...
Page 51: ...43 4 CONNECTIONS 4 5 2 S4 Wiring Diagram S4 Series Wiring Diagram...
Page 56: ...48 4 CONNECTIONS NOTES...
Page 57: ...49 5 Keypad Operation and Programming...
Page 70: ...62 NOTES 5 KEYPAD OPERATION AND PROGRAMMING...
Page 71: ...63 6 Parameter Groups...
Page 82: ...74 NOTES 6 S4 Parameter Groups...
Page 83: ...75 7 Parameter Descriptions...
Page 149: ...141 8 Troubleshooting Maintenance...
Page 159: ...151 9 Motor Characteristics...
Page 162: ...154 9 MOTOR CHARACTERISTICS NOTES...
Page 163: ...155 10 Options...
Page 165: ...157 11 Appendices...
