User's Manual

23
The AC termination points for line (AC+, hot), neutral (AC-), and ground are found on
the bottom din rail next to the 110 VAC label. Use the following steps to connect
power wires from the AC terminal block or cord to the pluggable terminal blocks on
the bottom din-rail (see Figure 2.2):
1. Connect a neutral wire to the bottom-side of the white block labeled “N” for
neutral. The neutral wire is usually white.
2. Connect a ground wire to the bottom-side of the green block labeled “G” for
ground. The ground wire is usually green. (Please note that the ground
connection is different than the protective earth connection. See the section
on Providing System Surge Protection for instructions on connecting to
protective earth.)
3. Connect a line wire to the bottom-side of the black block labeled “L” for line.
The line wire is usually black.
4. Connect or 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 Wavetronix stop bar detection system panel. The switch is on
if the push 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 checking the Click! 201/202
devices to see that the DC OK LEDs are illuminated.
Caution
An authorized electrical technician should perform installation and operation
of this unit. Persons other than authorized and approved electrical technicians
should NOT attempt to connect this unit to a power supply and/or traffic
control cabinet, as there is a serious risk of electrical shock through unsafe
handling of the power source. Extreme caution should be used when
connecting this unit to an active power supply.
Warning
Make sure power to AC mains is disconnected while wiring the AC input.