18
Compact I/O High-speed Counter Module
Publication 1769-IN030B-EN-P - October 2010
Wire the Finger-safe Terminal Block
When wiring the terminal block, keep the finger-safe cover in place.
1.
Loosen the terminal screws to be wired.
2.
Route the wire under the terminal pressure plate.
You can use the bare wire or a spade lug. The terminals accept a 6.35 mm (0.25 in.)
spade lug.
3.
Tighten the terminal screw making sure the pressure plate secures the wire.
Recommended torque when tightening terminal screws is 0.68 N•m (6 lb•in).
Wire Size and Terminal Screw Torque
Each terminal accepts up to two wires with these restrictions.
TIP
The terminal screws are non-captive. Therefore, it’s possible to use a ring lug
(6.35 mm (0.25 in.) maximum outside diameter with 3.53 mm (0.139 in.)
minimum inside diameter) with the module.
TIP
If you need to remove the finger-safe cover, insert a screwdriver into one of the
square wiring holes and gently pry the cover off. If you wire the terminal block
with the finger-safe cover removed, you will not be able to put it back on the
terminal block because the wires will be in the way.
Wire Type
Wire Size
Terminal Screw
Torque
Retaining Screw
Torque
Solid
Cu-90 °C (194 °F) 0.32... 2.1 mm
2
(22...14 AWG)
0.68 N•m (6 lb•in)
0.46 N•m (4.1 lb•in)
Stranded
Cu-90 °C (194 °F) 0.32... 1.3 mm
2
(22...16 AWG)
0.68 N•m (6 lb•in)
0.46 N•m (4.1 lb•in)
Wiring the
Finger-safe
Terminal Block
Upper Retaining Screw
Lower Retaining Screw
