Rockwell Automation Publication 150-QS003E-EN-P - April 2017 13
Installation Chapter 1
Control Wiring
Standard Control Terminal Block
SMC-50 controllers come standard with two 24V DC digital on/off inputs
and two relay outputs for auxiliary control functions. The standard digital I/O
wiring terminal block is on the upper right portion of the SMC-50 controller.
The terminal block is removable.
Control Wiring Specifications
The following table provides the specifications for all SMC-50 controller
control wiring and option module terminal blocks. Each wiring terminal
accepts a maximum of two wires.
Table 7 - Control Wiring Specifications
Wire Size 0.2...2.5 mm
2
(#24...14 AWG)
Maximum Torque 0.8 N•m (7 lb•in.)
Maximum Wire Strip Length 7 mm (0.27 in.)
Screw Type M3 Slotted
SHOCK HAZARD: To prevent the risk of electrical shock, disconnect all power
sources from the controller and option module before you install or service it.
Install the controller and option module in a suitable enclosure and keep it
free of contaminants.
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