Baldor VS1SD, Инструкция по установке и эксплуатации

Страница: 183 / 192

Options and Kits D-1 MN766
Chapter D
Options and Kits
D.1 Dynamic Braking (DB) Hardware
Whenever a motor is abruptly stopped or forced to slow down quicker than if allowed to coast to a stop, the motor becomes
a generator. This energy appears on the DC Bus of the control and must be dissipated using dynamic braking hardware.
Dynamic braking resistors are completely assembled and mounted in a NEMA 1 enclosure. A listing of available RGA
assemblies is provided in Table D-1. Select the braking resistor that has correct ohm value for the control and adequate
continuous watts capacity to meet load requirements.
Table D-1 Dynamic Braking Resistor Assemblies (RGA)
Input
Volts
HP
Total *
Ohms
Continuous Rated Watts
600 1200 2400 4800 6400 9600 14200
230
1-7.5 20 RGA620 RGA1220 RGA2420
10-20 6 RGA1206 RGA2406 RGA4806
25-40 4 RGA1204 RGA2404 RGA4804
50-60 2 RGA4802 RGA6402 RGA9602 RGA14202
1-3 120 RGA6120 RGA12120 RGA24120
460
5-10 60 RGA660 RGA1260 RGA2460 RGA4860
15-25 20 RGA620 RGA1220 RGA2420 RGA4820
30-50 10 RGA1210 RGA2410 RGA4810
60-125 4 RGA1204 RGA2404 RGA4804 RGA6404 RGA9604 RGA14204
* Note: Total Ohms column indicates the minimum resistance that the output transistors can drive. For example, if the Total
Ohms column indicates 6 ohms and a 6 ohm resistor is unavailable, an 8 ohm can be used but not a 4 ohm resistor.