Whelen Engineering Company CenCom Core-R CEM4HC User manual

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©2021 Whelen Engineering Company Inc.
Form No.14D59 (033121)
Installation Guide:
WeCanX™ High Current Remote Expansion Module
Model: CEM4HC
For warranty information regarding this product, visit www.whelen.com/warranty
• Proper installation of this product requires the installer to have a good understanding of automotive electronics, systems and procedures.
• Whelen Engineering requires the use of waterproof butt splices and/or connectors if that connector could be exposed to moisture.
• Any holes, either created or utilized by this product, should be made both air- and watertight using a sealant recommended by your vehicle
manufacturer.
• Failure to use specified installation parts and/or hardware will void the product warranty.
• If mounting this product requires drilling holes, the installer MUST be sure that no vehicle components or other vital parts could be damaged
by the drilling process. Check both sides of the mounting surface before drilling begins. Also de-burr the holes and remove any metal shards
or remnants. Install grommets into all wire passage holes.
• If this manual states that this product may be mounted with suction cups, magnets, tape or Velcro®, clean the mounting surface with a 50/50
mix of isopropyl alcohol and water and dry thoroughly.
• Do not install this product or route any wires in the deployment area of your air bag. Equipment mounted or located in the air bag deployment
area will damage or reduce the effectiveness of the air bag, or become a projectile that could cause serious personal injury or death. Refer to
your vehicle owner’s manual for the air bag deployment area. The User/Installer assumes full responsibility to determine proper mounting
location, based on providing ultimate safety to all passengers inside the vehicle.
• For this product to operate at optimum efficiency, a good electrical connection to chassis ground must be made. The recommended
procedure requires the product ground wire to be connected directly to the NEGATIVE (-) battery post (this does not include products that use
cigar power cords).
• If this product uses a remote device for activation or control, make sure that this device is located in an area that allows both the vehicle and
the device to be operated safely in any driving condition.
• Do not attempt to activate or control this device in a hazardous driving situation.
• This product contains either strobe light(s), halogen light(s), high-intensity LEDs or a combination of these lights. Do not stare directly into
these lights. Momentary blindness and/or eye damage could result.
• Use only soap and water to clean the outer lens. Use of other chemicals could result in premature lens cracking (crazing) and discoloration.
Lenses in this condition have significantly reduced effectiveness and should be replaced immediately. Inspect and operate this product
regularly to confirm its proper operation and mounting condition. Do not use a pressure washer to clean this product.
• It is recommended that these instructions be stored in a safe place and referred to when performing maintenance and/or reinstallation of this
product.
• FAILURE TO FOLLOW THESE SAFETY PRECAUTIONS AND INSTRUCTIONS COULD RESULT IN DAMAGE TO THE PRODUCT OR VEHICLE
AND/OR SERIOUS INJURY TO YOU AND YOUR PASSENGERS!
Automotive: Serial Communications
Warnings to Installers
Whelen’s emergency vehicle warning devices must be properly mounted and wired in order to be effective and safe. Read and follow all of Whelen’s written
instructions when installing or using this device. Emergency vehicles are often operated under high speed stressful conditions which must be accounted for
when installing all emergency warning devices. Controls should be placed within convenient reach of the operator so that they can operate the system without
taking their eyes off the roadway. Emergency warning devices can require high electrical voltages and/or currents. Properly protect and use caution around
live electrical connections.Grounding or shorting of electrical connections can cause high current arcing, which can cause personal injury and/or vehicle
damage, including fire. Many electronic devices used in emergency vehicles can create or be affected by electromagnetic interference. Therefore, after
installation of any electronic device it is necessary to test all electronic equipment simultaneously to insure that they operate free of interference from other
components within the vehicle. Never power emergency warning equipment from the same circuit or share the same grounding circuit with radio
communication equipment. All devices should be mounted in accordance with the manufacturer’s instructions and securely fastened to vehicle elements of
sufficient strength to withstand the forces applied to the device. Driver and/or passenger air bags (SRS) will affect the way equipment should be mounted. This
device should be mounted by permanent installation and within the zones specified by the vehicle manufacturer, if any. Any device mounted in the deployment
area of an air bag will damage or reduce the effectiveness of the air bag and may damage or dislodge the device. Installer must be sure that this device, its
mounting hardware and electrical supply wiring does not interfere with the air bag or the SRS wiring or sensors. Mounting the unit inside the vehicle by a
method other than permanent installation is not recommended as unit may become dislodged during swerving; sudden braking or collision. Failure to follow
instructions can result in personal injury. Whelen assumes no liability for any loss resulting from the use of this warning device. PROPER INSTALLATION
COMBINED WITH OPERATOR TRAINING IN THE PROPER USE OF EMERGENCY WARNING DEVICES IS ESSENTIAL TO INSURE THE SAFETY OF
EMERGENCY PERSONNEL AND THE PUBLIC.
Warnings to Users
Whelen’s emergency vehicle warning devices are intended to alert other operators and pedestrians to the presence and operation of emergency vehicles and
personnel. However, the use of this or any other Whelen emergency warning device does not guarantee that you will have the right-of-way or that other
drivers and pedestrians will properly heed an emergency warning signal. Never assume you have the right-of-way. It is your responsibility to proceed safely
before entering an intersection, driving against traffic, responding at a high rate of speed, or walking on or around traffic lanes. Emergency vehicle warning
devices should be tested on a daily basis to ensure that they operate properly. When in actual use, the operator must ensure that both visual and audible
warnings are not blocked by vehicle components (i.e.: open trunks or compartment doors), people, vehicles, or other obstructions. It is the user’s responsibility
to understand and obey all laws regarding emergency warning devices. The user should be familiar with all applicable laws and regulations prior to the use of
any emergency vehicle warning device. Whelen’s audible warning devices are designed to project sound in a forward direction away from the vehicle
occupants. However, because sustained periodic exposure to loud sounds can cause hearing loss, all audible warning devices should be installed and
operated in accordance with the standards established by the National Fire Protection Association.
Safety First
This document provides all the necessary information to allow your Whelen product to be properly and safely installed. Before beginning the installation and/or
operation of your new product, the installation technician and operator must read this manual completely. Important information is contained herein that could
prevent serious injury or damage.
WARNING: This product can expose you to chemicals including Lead which is known to the State of California to cause cancer and birth defects or
other reproductive harm. For more information go to www.P65Warnings.ca.gov.
51 Winthrop Road
Chester, Connecticut 06412-0684
Phone: [phone]
Internet: www.whelen.com
Sales e-mail: [e-mail]
Customer Service e-mail: [email protected]

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1
4
2
3
1
4
2
3
(+)
Battery
(-)
Connect
negative terminal of
light to Ground
Connect
Positive terminal of light to
Output wire 15 AMPS EA
J4-1 - OUTPUT 1 - RED
J4-2 - OUTPUT 2 - WHT
J4-3 - OUTPUT 3 - BLU
J4-4 - OUTPUT 4 - GRN
Connect
to WeCanX
CANbus
Fuse each
wire @
40 AMPS
REAR VIEW
REAR VIEW
These communication
wires must be a twisted
pair / 7 twists per linear ft
RED
RED
J1
GREY - J1-2 CAN LOW
18AWG
12AWG
GRN - J3 - CAN HIGH
BLK/WHT - J1-1 - CAN SHIELD
BLK - J1-4 - GND
Wire Gauge Chart
WARNING! All customer supplied wires that
connect to the positive terminal of the battery
must be sized to supply at least 125% of the
maximum operating current and atFUSED
the battery to carry the load.
DO NOT USE CIRCUIT BREAKERS WITH THIS
PRODUCT!
WeCanX
POSITIVE
Outputs
J4 J2 J1
BATTERY INPUT
+VBAT / 40AMPS
MAX each
J4 J2 J1
The WeCanX™ High Current Remote Expansion Module
Operates at 10-30V and connects to the WeCanX™ bus to
communicate with CenCom Core™.
Specifications:
Input Voltage. . . . . . . . . . . . . . . . . . . . . . . .10 - 30 VDC
Input Current. . . . . . . . . . . . . . . . . . . . . . .60 amps max
Sleep Current. . . . . . . . . . . . . . . . . . . . . . . . . . . .1 mA
Output Current. . . . . . . . . . . . . . . . 15 amps per output
Communication Protocol. . . . . . . . . . . . . . . WeCanX
Operating Temperature. . . . . . . . . . . . . -40C to +65C
IP Rating. . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . .IP67
Features:
• Programmable High/Low Power
• Four 15 amp high current outputs / high side
switched
• All outputs syncronizable with other WeCanX
system outputs
• Outputs support standard & DVI flash
patterns
• Short circuit and over-current protection
• Reverse polarity and over-voltage protection
Mounting:
Selecting a mounting location:
This module has been designed to be mounted
under the hood, in the trunk or in the passenger
compartment. Regardless of the location selected,
the following notes must be observed:
• The module should be mounted on a flat
surface. Be sure that this surface is not one that
either generates or is exposed to excessive heat during normal
operation of the vehicle.
• Do not select a location where the module will be
exposed to potential damage from any
unsecured or lose equipment in the
vehicle.
• The mounting area should be easily
accessible for wiring and service purposes.
Be sure that the backside of the proposed
mounting surface does not hide any wires, cables, fuel
lines, etc., that could be damaged by drilling mounting holes.
• When you find a suitable location secure the module using the supplied
mounting hardware.
Wiring & Operation:
• Wire the module as shown
in the wiring diagram.
Follow the wire gauge chart
for proper wire size when
extending the wires. NOTE:
Add the supplied shrink
wrap tubing to the
connectors.
• Extend the WeCanX wires to
the CenCom Core™ Main
Box and connect them as
shown. Operation is
controlled by CenCom
Core™.
• Extend two 10 AWG wires to
the positive terminal of the
battery, connect there and
fuse as shown.
• Extend the four positive output wires to the positive terminals of the
lights you wish to operate and extend the negative terminal of each light
to battery ground. Operation is controlled by CenCom Core™.