© 2020 Polara Doc. 350-078-01 Rev. A-25259 02/18/2020 Page 2 of 2
www.polara.com
larger black terminal block labeled BUTTON/PLC. Wire polarity is not important.
Connect the 3-wire cable to the terminal block on the right. Make sure the
wiring matches at both ends according to the DAT, GND, and PWR labels at the
terminals.
Install iPHCU3S per #2 below.
1.10 With the power on, check that the PBS is operational. Recheck tightness of
all connections. Re-install the lower cover.
1.11
The iNS3 PBS is now ready to use. For programming and configuration of the
iNS3 PBS, please refer to the “Polara iOS Field Service App User Guide” or
the “Polara PC App User Guide” in the iNS3 System Manual.
2. iPHCU3S
Note: Removing power from the pedestrian signal head during installation is recommended for protection from electric shock.
2.1 The iPHCU3S normally installs inside the Pedestrian Signal Head (PED Head). It is supplied with a hardware kit which includes
a mounting plate and associated screws and nuts. The photo shows an example of a typical installation. Typically, tapped ¼-20
holes are present. If they are not, a hole (or holes) to match the mounting plate need to be drilled and tapped. While a single
screw is sufficient to secure the iPHCU3S bracket to the PED Head, a second screw may be used for additional stability. Distance
between holes should be 9.3”.
2.1.1 Attach the iPHCU3S to the mounting plate with the supplied hardware. Insert the 6-32 screws and secure with the 6-32
nuts.
2.1.2 Fasten the assembly to the ped head with the 1/4-20 screws.
2.2 Install jumper wires to connect the light power terminal block to the iPHCU3S input power terminal block. Install jumper wires
for AC Neutral, Walk, and Don’t Walk. AWG 18 or larger wire is recommended for this installation and should meet all applicable
regulatory requirements.
2.3 Connect the wires from previously installed 3-wire cable to the output terminal block of the iPHCU3S.
Once all wire connections
are made and double-checked for correct landings, restore power to PED Head.
3. Technical Support Contact
Polara @ 903-366-0300 EXT 4 or 888-340-4872
The latest version of the complete manual is available in PDF format at www.polara.com.
2.1
To PED Call Inputs,
if available
Ground Screw, must be installed
Ped Head Light Power Terminal
Block
WALK
DON’T WALK
iPHCU3S
AC NEUTRAL
EARTH GND,
if available
iNS3 PBS
