This manual provides comprehensive installation procedures for the Sentinel. It
includes the process of site planning, site preparation, the mechanical installation of
the SentineI and the electrical wiring of the unit.
If further assistance is needed, please contact the distributor from which the Sentinel
was purchased.
When calling for assistance, you must have the following information available:
Sentinel Serial Number:
Distributor Name:
DECLARATION OF COMPLIANCE
This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cau se harmful interference
in which case the user will be required to correct the interference at his own expense.
Figure 9. BNC Male Plug for Camera Connection........................................................................17
Document Number: SENT1001 ii
Document Name: Sentinel Installation Manual
Page 5
SENTINEL
1 Site Planning and Preparation
1.1 Introduction
This chapter provides guidelines for planning the Sentinel installation and preparing the site. Site
preparation includes:
• Determining how and where the Sentinel will be mounted
• Installing conduit runs and required wiring
These instructions serve as general guidelines only. If your wash manufacturer’s installation requirements
differ from these guidelines, always meet the wash manufacturer’s r equirements first.
Requirements specified in local electrical and building codes must be followed and shall take precedence
over the guidelines provided within this document. All units should be installed by a professiona l electr ician
ONLY.
The Sentinel is rated for the following environmental specifications:
• Temperature: -20° F to 115° F
• Humidity: 0% to 100%
The following symbol is used in the Sentinel:
This symbol represents the presence of earth-grounded eq uipment.
For in-bay automatics and other applications where the Sentinel is installed at the wa sh entrance, it should
be placed 10’-14’ from the wash to ensure the proper timing and flow of custom ers.
For curb mount applications, the front surface of t he Sentinel sh ould be even with the edge of the curb. To
achieve this dimension, the base frame should be installed so its leading edge is 7 in. fr om the edge of the
curb.
1.2.2 Express Wash Applications
Express Exterior sites should be designed to provide 9 ft. wide traffic lanes at the Sentinels. The traffic
control (or barrier) gate should be located approximately 10 ft. from the center of the Sentinel and an
underground vehicle detection loop is required under the gate arm. In some cases, it may be desirable to
install a 2
the vehicle queue.
If the Unitec Reach Free ID (RFID) option is included, the RF Antenna should be located adjacent to the
Sentinel.
(antenna) option. Refer to the installation instructions provide d with the gate and RFID option for guidance
in installing these devices.
nd
loop between the gate and tunnel entrance (referred to as the merge loop) to proper ly manage
Figure 1 provides guidelines for the design of an Express lane with the Sentinel, gate and RFID
A typical installation will require 3 conduit runs for, power, data and wash control lines. DO NOT run data
wires in the AC Power or Wash Control conduits. Additional conduit runs may be needed when a gate or
the Sentinel RFID option are to be used. Conduit size should be at least ¾ in, a larger conduit may be
required depending on the quantity and gauge of wires to be installed. Refer to local and national
electrical codes to select the proper conduit type and size.
planning.
The Sentinel requires 120 VAC, 8 Amps service. In applications where barrier gates are to be used, each
gate requires 120 VAC, 5 Amps service. The Sentinel and gate must be powered from se parate circuit s.
Ensure the protective earth ground wires do not carry any motor return current. Only
Note:
the neutral wire should carry retu rn current. Follow local electrica l code when wiring
the Sentinel. All units should be installed by a profe ssional ele ctrician ONLY.
1.3.3 Site Wiring Requirements
Wiring requirements will vary by site depending on the type of wash equipment and the Sentinel
configuration. The following table shows site wiring, which may be needed. As wires are pulled through
conduit, ensure there is at least 6 ft. of wire extending from the end of the conduit stu b.
The Sentinel base frame is designed to be embedded in a con crete pad , b u t ca n a lso be sur face mounted
in cases where concrete has already been poured. Unitec highly recommends that the base be
embedded into concrete, because using this method makes the unit more secure and less likely to be able
to be removed by a truck with a chain. Surface mounting is less secure.
In order to mount the base frame correctly, the conduit holes on the top plate of the base frame should be
located in the forward left position when the unit is facing the lane, as shown below, and in Figures 1 and
5.
Pull all wires through conduits before mounting the base. See Electrical Planning for
wiring requirements.
Figure 4. Top Plate of Base Frame
The frame includes (2) surface plates, as shown in Figure 4 below, to accommodate different mounting
heights. When installing the base on a curb, the frame should be set so that the upper mounting plate is
flush with the concrete surface. When no curb is used (standard height base), the frame should be set so
that the upper mounting plate is flush with the concrete surface.
When the base is to be surface mounted, the legs of the frame will need to be cut so that the appropriate
mounting plate can be bolted to the concrete surface. The cut edges of the pipe should be coated with a
rust preventative paint to deter corrosion. The frame is to be secured to the concrete using the (6)
concrete anchor bolts provided.
With the frame in place, the wires run through the conduit stubs should b e routed throug h the conduit plate
on the top left side of the frame. Flexible conduit should be installed between the conduit stub and
mounting plate to protect and separate the high and low voltage circuits. The flex conduit should be
secured to the conduit plate using a suitable nut.
2.4 Mounting the Sentinel
Before setting the Sentinel in place, ensure the fiel d-installed wires are ro uted to a po int where th ey can be
accessed and pulled through the wiring holes on the bottom of the Sentinel a nd that the p lastic sheath has
been fitted over the base.
1. Open the Sentinel and remove the bill dispenser.
2. Carefully set the Sentinel on top of the base so the (3) studs of the base pass through the
mounting holes on the bottom of the Sentinel.
3. Secure the Sentinel to the studs with the flat washer, lock washer and hex nut (in that order)
supplied with the base.
4. Pull the wires up through the cable entrance port s on the bottom of the Sentinel enclo sure.
5. Verify the unit’s final position.
6. Use the dual-plane level to verify that the unit is level. Make appropriate a djustments if necessary.
7. Tighten the 3 nuts with the socket wrench. When this has been successfully completed, there
should be no movement of the case whatsoever.
3 Electrical Installation
3.1 Hardware Required
Unitec does not provide connectors for terminating the field-installed wires. These wires will vary by
application but connectors that may be required include:
• RJ-45 Modular Plugs (for terminating the CAT-5 network cable).
• BNC Connectors (for terminating coaxial cable for the camera options)
3.2 Recommended Tools
In addition to the mechanical mounting of the Sentinel unit to the base (and the base to the concrete),
there will be a number of electrical connections that must be made. These connections will require the
use of the following common electrical tools:
• Small, thin tipped, straight screwdriver (1/8” tip, for green Phoen ix connectors)
• Wire strippers (capable of handling 10-23 AWG wire)
• Diagonal cutters
• Needle nose pliers
• Modular plug crimp tool (if CAT 5 or phone lines need to be term inated)
3.3 General
NOTE: Before starting, ensure all required wires have been routed to the Sentine l (as descr ibed in the Site
Preparation section).
The following figure shows the location insid e the Sentinel where the field wires will connect.
1. Locate main power wires. There will be three 16 AWG (or greater) environmentally rated black,
white, and green colored wires.
2. Route the main power wires up through the condu it to the Sentinel’s power panel. Remove excess
wire length, leaving sufficient length to reach the power panel. Remove the plastic shield on the
power terminal block.
3. Secure the Neutral (White), Ground (Green), and Line (Black) wires to the appropriate terminal
screws on the power panel. (See figure below). Re-tighten the screws to hold the w ires in place.
4. Use wire ties to route and secure any extra cable. R eplace the plastic shield.
3.5 Network Connection
The Cat 5 cable will need to be terminated at each end with an RJ-45 modular plug. This termination
should be performed by a technician who is experienced in assembling network cables as a slight
misalignment in the wire termination can cause communications problems. For reference, Appendix B
provides guidelines for terminating a network cable with a modular RJ-45 plug.
The Network (Ethernet) port is located at the bottom edge of the mother board. There should be a surge
suppressor installed in the Ethernet port. Insert the terminated CAT 5 cable into t he other end of t he surge
protector. The facility end of the Cat-5 cable connects to one of the LAN ports on the Unitec router. The
router’s WAN port should be connected to the Internet Service device (e.g. DSL or Cable modem). Other
Unitec devices may need to be connected to the router’s LAN ports. Refer to
connecting devices to the router.
In applications where the Sentinel will communicate with the Wash Controller, the wash control wires will
need to be connected to the Wash I/O Board.
Most wash manufacturers use a five-wire system to provide the arming signals for the selected wash
packages. One common line and four arming input wires are fed from the wash’s PLC to the Wash I/O
board. In addition to these five wires, a Wash-In-Use (WIU) Hot and W IU Ne utral are req uired to reset the
wash electronics. Typically, these are also provided by the PLC.
Each wash manufacturer has its own specific color code system and wash relay pin-outs; therefore, it is
important to review the appropriate wash documentation prior to beginning this portion of t he installatio n.
3.6.2 Wiring the Wash Relay Interface
To wire the wash relays, connect the wires that come from the PLC to the appropriate pin numbers in the
phoenix connector using the following procedures:
3.6.2.1 Preparation
Note:
• You will need a thin tipped, flat head screwdriver to open and tighten the relay connections of
• Review the wash manufacturer’s documentation to determine the color codes for the wiring of
• Phoenix connectors are shipped already inserted in the appropriate sockets on the Wash I/O
The wiring for the Sentinel Wash I/O board is the same as the wiring for the Wash
Select II wash interface.
the Phoenix connector.
the wash pin-outs for your wash equipment before beginning this installa tion.
board.
1. Remove the Carrier Board/Wash I/O Board Cover Plate using a 5/16” socket wrench.
2. Locate the Wash I/O board on the inside lower right-hand wall of the Sentinel case.
3. On the Wash I/O Board, locate the 10-pin Phoenix connector labeled J17 on the lower
right-hand corner of the Wash I/O board.
“Wash Output #”refers to the number associated with the arming wires. Refer to the
wash manufacturer documentation for more information.
4. Connect the wash relay arming wires, the wash relay common wire, and any spare option
relay wires to the appropriate pins, as indicated in the following table. Use the screwdriver
to open and/or secure the manufacturer wash wires to each of th e Unitec relay locat ions.
5. Plug the Phoenix connector into the Wash I/O board socke t J17.
6. Continue to Wash-In-Use wiring procedures.
3.6.3 Wiring the Wash-In-Use Interface
3.6.3.1 Preparation
Note:
Wash equipment requires a reset circuit. This circuit is generally identified as the “Wash-In-Use” (WIU)
signal. It is not uncommon for values of this voltage to be as much as 115-120 VAC, so it is extremely
important to verify that there is no power applied to any of the wash components befo re proceeding.
Note:
Follow local electrical code when wiring the Senti nel.
Wash equipment wiring may vary, and not all equipment manufacturers use the washfault interface. Refer to the manufacturer’s document ation for additi onal information.
• Make sure all power is disconnected from the wash equipment prior to beginning this
procedure.
• You will need a thin tipped, flat head screwdriver to open and tighten the relay connections of
the Phoenix connector.
• Review the wash manufacturer’s documentation to determine the color codes for the wiring of
the wash pin-outs for your wash equipment before beginning this installa tion.
• Phoenix connectors are shipped already inserted in the appropriate sockets on the Wash I/O
board.
1. On the Wash I/O Board, locate the 6-pin Phoenix connector labeled J18 on the lower left-
hand corner of the Wash I/O board.
2. Remove the Phoenix connector from the socket.
3. Turn the connector so that the wire inputs are facin g up as shown below.
Figure 8. 6-Pin Phoenix Connector
4. Referring to the figure above, connect the following wires to the appropriate pins, as
indicated in the following table. Use the screwdriver to open and/or secure the
manufacturer wash wires to each of the Unitec relay locations.
The use of an intercom system allows two-way communications between customers at the Sentinel and
staff elsewhere on site. A customer activates the Sentinel’s intercom output by pressing the help button.
Without an intercom, the intercom output can be used to activate a bell, light or other device to alert an
attendant that help is needed.
The intercom wires connect to the Display IO board on the back of the main door. Jumpers and
adjustments to control its operation are also located on that board. 2, 3, and 4 wire intercoms are
supported. A digital intercom is recommended if the intercom wiring is sharing conduit with other
communications wiring, but not required. Unitec does not supply intercom systems.
3.7.2 Intercom Connections
The Intercom has two connectors which control the way in which the intercom is wired and the mode of
operation. J16 is the interface and connects to the customer’s intercom unit. J35 is used to select mode of
operation (two, three, or four wire intercom systems). Twisted pair / fully shielded cable is recommended
for optimum performance.
3.7.3 Intercom Adjustments
The Intercom system has the ability to sense when voice band audio signals are present. This allows
the speakers in the unit to revert to a passive intercom mode. This bypasses the internal audio sectio n
and allows the left speaker to be used as an intercom.
3.7.4 Connection Overview
Call Function: The unit will initiate a call function by closing the contacts on RL5. By default, J16-Pin 1
(H1) and J16-Pin 2 (H2) will always reflect the contact closure of RL5. This is the default for the four-wire
mode when both the call function and audio are completely separated. More detailed instructions on this
follow.
Audio: When the Sentinel intercom mode is active, the audio section is floating and is not relative to
ground. By default, J16-Pin 3 (SP+) and J16-Pin 4 (SP-) will always be connected to the audio section.
Four Wire Intercom Configuration: Two separate pairs (four wires) are used for both the call function
and audio in the four-wire configuration. In this mode, J1 7 receives no jumpers.
3 Wire Intercom Configuration: This mode requires two conductors for audio and one additional
conductor for the call function. This mode uses a common ground for both audio and the call function (SP). Jumper pins 3&4 of J17 and connect H1, SP+ and SP- .
2 Wire Intercom Configuration: This type of intercom system has both the Call Function and audio
sharing the two conductors. Jumper pins 3&4 and 1&2 of J17 and connect the two conductors to SP+ &
SP-.
3.8 Camera Connection
The (optional) surveillance camera is attached to the front door of the Sent inel. The camera is inte nded for
use with a DVR or similar monitoring device installed at the site. The coaxial cable routed to the camera is
used to connect it to the monitoring device. The coax cable will need to be terminated with a BNC
connector similar to the one shown in
Figure 9.
Figure 9. BNC Male Plug for Camera Connection
3.9 Gate Wiring
In multi-lane applications, a Unitec or 3rd party gate controller is required. Refer to the instructions
provided with the gate controller for connecting wires between it and the Sentinel. If needed, a gate can
be used with a single Sentinel and no gate controller. Refer to for instructions on connecting the Sentinel
to the gate.
3.10 Connecting the Reach F ree ID Option
Refer to the installation instructions supplied with th is product op tion.
Unitec supplies a pre-programmed router for connecting devices as a local network.
The networked devices will vary based on options ordered and may include:
• One or more Sentinel units
• A Sentinel Console
• A POS Interface device (to communicate with a C-store POS System)
• A print server (for connecting a local report printer)
In cases where there will be more than (4) Unitec devices on the network, an
Ethernet switch will need to be added. The WAN port of the switch connects to one
of the LAN ports of the Unitec router. The additional devices can then be connected
to the LAN ports of the switch.
The illustration below provides a sample network diagram.
Example of Networked Unitec Devices
Third party devices should not be connected directly to the Unitec router. The
broadband device supplied for Internet service (e.g. DSL or Cable modem) will often
have a built-in router that can be used to connect these devices. In some cases
however, a separate router will need to be installed between the broadband modem
and the Unitec router. The following illustration shows the use of a 2
When a router (or modem with built-in router) is used between the Unitec router and
broadband connection, it must be configured to allow external connections to and
from the Sentinel. The router should be configured to:
• Forward the ports assigned to the Sentinel(s) to the Unitec router. For a
single unit installation the port is 9810. In multi-unit sites, the ports would
increment for each Sentinel i.e. 9811, 9812 etc..).
• Provide a static/reserved IP address to the Unitec router reserved so that the
forwarded ports will always be directed to it.
1. Carefully remove the outer jacket of the cable. Be careful when stripping the
jacket as to not nick or cut the internal wiring. One good way to do this is to cut
lengthwise with snips or a knife along the side of the cable, away from yourself,
about an inch toward the open end. This reduces the risk of nicking the wires'
insulation. Locate the string inside with the wires, or if no string is found, use the
wires themselves to unzip the sheath of the cable by holding the sheath in one
hand and pulling sideways with the string or wire. Cut away the unzipped sheath
and cut the twisted pairs about 1 1/4" (30 mm). You will notice 8 wire s twist ed in 4
pairs. Each pair will have one wire of a certain color and another wire that is white
with a colored stripe matching its partner (this wire is ca lled a tracer).
2. Inspect the newly revealed wires for any cuts or scrapes that expose the copper
wire inside. If you have breached the protective sheath of any wire, you will need
to cut the entire segment of wires off and start over at step one. Exposed copper
wire will lead to cross-talk, poor performance or no connectivity at all. It is
important that the jacket for all network cables remains int act.
3. Untwist the pairs so they will lay flat between your fingers. The white piece of
thread can be cut off even with the jacket and disposed (see Warnings). For
easier handling, cut the wires so that they are 3/4" (19 mm) long from the base of
the jacket and even in length.
4. Arrange the wires in the following order (from left t o right):
• white/orange
• orange
• white/green
• blue
• white/blue
• green
• white/brown
• brown
Press all the wires flat and parallel between your thumb and forefinger. Verify the
colors have remained in the correct order. Cut the top of the wires even with one
another so that they are 1/2" (12.5 mm) long from the base of the jacket, as the jacket
needs to go into the 8P8C connector by about 1/8", meaning that you only have a
1/2" of room for the individual cables. Leaving more than 1/2" untwisted can
jeopardize connectivity and quality. Ensure that the cut leaves the wires even and
clean; failure to do so may cause the wire not to make contact inside the jack and
could lead to wrongly guided cores inside the plug.
5. Keep the wires flat and in order as you push them into the RJ-45 plug with the flat
surface of the plug on top. The white/orange wire should be on the left if you're
looking down at the jack. You can tell if all the wires made it into the jack and
maintain their positions by looking head-on at the plug. You should be able to see
a wire located in each hole, as seen at the bottom right. You may have to use a
little effort to push the pairs firmly into the plug. The cabling jacket should also
enter the rear of the jack about 1/4" (6 mm) to help secure the cable once the
plug is crimped. You may need to stretch the sleeve to the proper length. Verify
that the sequence is still correct before crimping.
6. Place the wired plug into the crimping tool. Give the handle a firm squeeze. You
should hear a ratcheting noise as you continue. Once you have completed the
crimp, the handle will reset to the open position. To ensure all pins are set, some
prefer to double-crimp by repeating this step.
7. Repeat all of the above steps with the other end of the cable. Test the cable to
ensure that it will function in the field. Mis-wired and incomplete network cables
could lead to headaches down the road. Also, crossed wire pairs could lead to
physical damage of computers or phone system equipment, making it even more
crucial that the pairs are in the correct order. A simple cable tester can quickly
verify that information for you. Should you not have a network cable tester on
hand, simply test connectivity pin to pin.
The external POS option allows wash codes to be purchased at Point of Sale (POS
registers or gas pumps. This option includes a port conversion device, which
connects between the Unitec router and the C-store POS System. A 3ft Ethernet
cable is included for connecting the Ethernet port o f the converter to the Unitec r outer.
A standard 9-pin serial cable is included for conne cting the Serial port of the converter
to the C-Store POS however, some POS systems may require an alternate cable (or
adapter). Contact the POS manufacturer for their cabling requirements.