Rockwell Automation SMC-Flex, User Manual

Page: 56 / 160

3-12 Wiring
Control Terminal Designations
As shown in Figure 3.10, the SMC-Flex controller contains 24 control
terminals on the front of the controller.
Figure 3.10 SMC-Flex Controller Control Terminals
➀
RC Snubbers are required on loads connected to auxiliary.
➁
Do not connect any additional loads to these terminals. These “parasitic” loads may cause problems
with operation, which may result in false starting and stopping.
➂
External Bypass operates an external contactor and overload relay once the motor reaches full
speed. The SMC-FLEX overload functionality, diagnostics and metering are disabled when the
external bypass is activated. Proper sizing of the contactor and overload is required.
➃
Control power on units rated 625 … 1250 A is pre-wired internally, from terminal block CP1.
Terminal
Number
Description
Terminal
Number
Description
11 Control Power Input ➀➃ 23 PTC Input ➁
12 Control Power Common ➀➃ 24 PTC Input ➁
13 Controller Enable Input ➁ 25 Tach Input
14 Control Module Ground 26 Tach Input
15 Option Input #2 ➀➁ 27 Ground Fault Transformer Input ➁
16 Option Input #1 ➀➁ 28 Ground Fault Transformer Input ➁
17 Start Input ➀➁ 29 Aux. Contact #2 ➀➂
18 Stop Input ➀➁ 30 Aux. Contact #2 ➀➂
19 Aux. Contact #1 ➀➂ 31 Aux. Contact #3 ➀➂
20 Aux. Contact #1 ➀➂ 32 Aux. Contact #3 ➀➂
21 Not Used 33 Aux. Contact #4 ➀➂
22 Not Used 34 Aux. Contact #4 ➀➂