4.3.3 Wiring to module terminals
This section explains the wiring of power lines and grounding lines to the main and
Connect to the 24VDC
terminals of an I/O module
that requires 24VDC internally.
(1) Use the thickest possible (max. 2 mm
VAC and 24 VDC power cables. Be sure to twist these wires starting at
the connection terminals. For wiring a terminal block, be sure to use a
solderless terminal. To prevent short-circuit due to loosening screws,
use the solderless terminals with insulation sleeves of 0.8 mm (0.03
inch) or less thick. The number of the solderless terminals to be
connected for one terminal block are limited to 2.
(2) Be sure to ground the LG and FG terminals. Failure to do so may cause
the programmable controller to be susceptible to noise. Note that LG
terminals include the potential as half as that of input voltage; you might
get an electric shock when you touch them.
with insulation sleeves
Extension base unit (A1S68B)
(14 AWG)) wires for the 100/200