SNAP POWER SUPPLIES
SNAP PAC R-Series Controller User’s Guide
82
Wiring the Primary Power Supply
Use one power supply per I/O unit. Use 14 AWG wire.
1.
Mount the SNAP-PS5 or SNAP-PS5-24DC power supply so that the attached red and black
power wires will reach the + and – power terminals on the SNAP mounting rack.
2.
Using the power terminals on the SNAP mounting rack, attach the red wire to the + terminal
and the black wire to the – terminal. Connect the ground terminal on the SNAP rack to ground.
3.
For the SNAP-PS5 (not illustrated): Using the removable input power connector on top of the
power supply, apply 120 volts AC power between the two terminals marked “AC.” Connect the
ground terminal to ground.
4.
For the SNAP-PS5U (not illustrated): Using the removable input power connector on top of the
power supply, apply 240 or 120 volts AC power between the two terminals marked “AC.”
Connect the ground terminal to ground.
5.
For the SNAP-PS5-24DC (illustrated below): Using the removable input power connector on
top of the power supply, apply 24 volts DC power between the two terminals marked “±DC.”
Connect the ground terminal to ground.
Loop Power Supply
Some analog modules (SNAP-AIMA, SNAP-AIMA-4, SNAP-AIMA-i, SNAP-AIMA2-i) also require a
current loop supply, which can be provided by the SNAP-PS24 or the SNAP-PS24U. Both offer 24
volts of DC power, the SNAP-PS24 at .75 A and the SNAP-PS24U at 1.25 A. Follow these steps to wire
these power supplies.
1.
Mount the SNAP-PS24 or SNAP-PS24U power supply in a location where the attached output
power wires will reach the field connector for SNAP analog modules.
