Wavetronix SmartSensor Advance Extended Range (SS-200E) - User Guide - Manual (Page 30)

CHAPTER 2 • CONNECTING POWER AND SURGE PROTECTION 29
Warning
Make sure power to AC mains is disconnected while wiring the AC input. If your in-
stallation does not require AC power, you will need to use surplus DC power inside
he traffic cabinet. In this case, Wavetronix recommends you use the Click 221 (8 AC
surge protector) to protect the backplate and SmartSensor Advance units from DC
surges.
Figure 2.2 – Connecting AC Power to the Preassembled Backplate
Use the following steps to connect power to the AC terminal block on the bottom DIN rail
(see Figure 2.2):
1 Connect a neutral wire (usually a white wire) to the bottom side of the terminal block
labeled “N” for neutral.
2 Connect a ground wire (usually a green wire) to the bottom of the terminal block la-
beled “G” for ground. (see the Wiring Protective Earth Ground section below).
3 Connect a line wire (usually a black wire) to the bottom of the terminal block labeled
“L” for line.
4 Turn on AC mains power.
5 Press the circuit breaker switch on the left side of the top DIN rail to switch power to
the backplate. The switch is on if the button is below the level of the device housing; the
switch is off if the button is raised above the surface of the housing.
6 Verify that DC power is properly regulated by making sure the DC OK LEDs are il-
luminated on the Click 201/202/204.