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Wiring
3-39
SMC-Flex Controller as a Bypass to
an AC Drive
By using the controller as shown in Figure 3.37, a soft start
characteristic can be provided in the event that an AC drive is non-
operational.
Note: A controlled acceleration can be achieved with this scheme,
but speed control is not available in the bypass mode.
Figure 3.37 Typical Application Diagram of a Bypass Contactor for an AC
Drive
M
3-Phase
Input Power
VFD Branch
Protection
VFD
L1/1
L3/5
L2/3
T1/2
T3/6
T2/4
SMC-Flex
Controller
AF
AF
IC
IC
O.L.
➀
➀
➁
➁
➁
➁
➃
➁
➁
➂
➀
Mechanical interlock required
➁
Customer supplied
➂
Many VF drives are rated 150% FLA. Because the SMC-Flex controller can be used for 600% FLA starting,
separate branch circuit protection may be required.
➃
Overload protection is included as a standard feature of the SMC-Flex controller.
Содержание SMC-Flex
Страница 1: ...USER MANUAL FOR SERIES B SMC Flex BULLETIN 150...
Страница 4: ...Notes...
Страница 30: ...1 22 Product Overview Notes...
Страница 126: ...9 8 Troubleshooting...
Страница 148: ...B 14 Parameter Information Notes...
Страница 150: ...C 2 Renewal Parts Notes...
Страница 152: ...D 2 Contactor Replacement Installation Instructions for 625 1250 A units 1 2 Step B Step C 1 2 3 1...
Страница 153: ...Contactor Replacement Installation Instructions for 625 1250 A units D 3 1 3 4 2 E I E E I E Step D Click...
Страница 156: ...E 2 Accessories Notes...