POLARA iNS3 Datasheet

© 2020 Polara Doc. 350-078-01 Rev. A-25259 02/18/2020 Page 1 of 2 www.polara.com
Installation Quick Start Guide for iNS3/iPHCU3S
AWG 18 wire is recommended for this installation and should meet all applicable regulatory requirements.
Removing power from the pedestrian signal head during installation is recommended for protection from electric shock. Safety
protections may be compromised and warranty voided if installed, utilized, or congured in any way di󰀨erent from factory instructions.
Note: An iNS2 PBS can operate as an iNS3 PBS (standalone Ped-Head Based System). It comes with a 3-position terminal
block capable of connecting a 3-Wire Cable to a Ped-Head Control Unit (iPHCU3S). If changing an installed/existing iNS2
PBS to operate as an iNS3, you must disconnect the ped wires in the cabinet from the Polara Interconnect Board and
land to standard ped input terminals.
Equipment needed for complete iNS3 installation:
iNS3 Push Button Station (PBS)
iPHCU3S (Ped Head Control Unit)
3-Wire Cable (Polara supplied or equiv.)
1. iNS3 PBS
1.1 Place intersection in PED recall.
1.2 Plan PBS (push button station) locations if they have preprogrammed special
messages. If special messages are not used, or will be programmed once each PBS is
installed, proceed to next step.
1.3 The iNS3 PBS must be mounted only in the upright orientation with the
connection terminals at the bottom, any other mounting orientation will void the
warranty. If retrotting these buttons on an intersection with existing buttons, remove
existing buttons. Typical push button frames have the wire exit hole in the pole directly
behind the center of the button (approx. 3.5” below lower mounting hole). Because our
PBS requires the wires to reach the bottom of the unit, verify 8” of wire extends beyond
wire exit hole in pole. If enough wire is not available, evaluate whether a new, lower wire
exit hole that would line up with the terminal block access point in the bottom of the PBS
would provide adequate wire length. If yes, drill and reroute wires, the optimal position
of this hole is approx. 6.5” below the lower mounting hole. If not, you need to gure out
a way to achieve more wire length.
1.4 The iNS3 PBS is a modular device consisting of a backplate, electronics module,
speaker module, arrow button diaphragm, button cover, sign, and optional sign
backplate (for larger signs). The PBS is shipped partially assembled to secure it during
transport. To prepare for mounting, remove 3 screws from the lower cover. Remove
all screws securing the sign and sign backplate if present. Remove EARTH GND
(ground) screw located between the two terminal blocks at the bottom of the unit. Store
this screw in a safe place, it ensures the unit is grounded to the pole and must be re-
installed. Verify the arrow on PBS module is oriented toward the associated crosswalk.
If necessary, the button diaphragm assembly may be taken o󰀨 and rotated as needed.
Secure the button diaphragm in the correct orientation by tightening the two retaining
screws with a Phillips-head screwdriver. Please use caution as the metal button
diaphragm is sharp. Remove the electronics module and speaker module together
from the backplate.
1.5 Position backplate on pole at correct height and orientation so arrow points to ending
of crosswalk on the opposite side of the street. Orientation is very important because
a blind person uses the arrow and face of the sign to orient themselves to the direction
of travel. Mark mounting bolt locations if existing holes not correctly located. MUTCD
max. height is 48”. Typical recommended height is 42”, but can be lower. Drill and tap
¼-20 bolt holes and wire access hole (if necessary, see Step 1.3). Route the iN3-Cable
(General Cable C2831A, or equiv.) between the pedestrian signal head and the pole.
1.6 Position the backplate against the pole and route the wires forward near the bottom
end of the backplate. Position the wire such that 3 or 4 inches of wire is available at the
bottom of the backplate.
1.7 Attach the backplate to the pole using the provided ¼-20 bolts with washers.
1.8 Re-install the electronics/speaker modules. Re-install the sign (and sign backplate
if using), securing the PBS Module in place before wiring. Re-install EARTH GND
(ground) connection screw to location between terminal blocks.
1.9 Connect the two wires from the tra󰀩c signal cabinet (if available) to the terminals of the
1.9
1.7
1.8
Ground
Screw

© 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 conguration 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 su󰀩cient 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