Item
Specification
Input battery voltage range
9VDC to 16VDC for normal operation
Load dump
Load dump tolerant
Cranking voltage
Crank voltage of 6VDC for 1 second with no
reset to the MCU.
Reversed battery
The system is tolerant of a reversed battery
for a period of 1 minute. Load activation
during reversed battery is allowable.
Short Circuit
All inputs and outputs shall not be damaged
by either short circuit to battery or ground
with the exception being ground pins being
Quiescent current
There is no requirement for a specific
Loose battery terminals
Momentary interruption in power supply
(loose battery terminal). The module shall not
reset for battery dropouts less than 50ms no
Fusing
The unit is not fused. It relies on upstream
fusing.
Battery connections
6.3mm spade terminals
Total current
<20A
ARB Accessory Controller, ECU specification
Overview
The ARB Accessory Controller is a system for controlling and monitoring various vehicle accessories
such as switching on and off lights, and monitoring pressure transducers. The system is composed of
two main parts: a touch screen graphical user interface (GUI), and an electronic control unit (ECU).
The GUI provides the user with a dashboard / switchboard to display the on/off state of the
accessories and allow the user to switch them. The ECU is the brains of the system, it communicates
with the GUI, electronically switches the accessories, stores the states of all accessories. The
interface between the ECU and the GUI is USB and Bluetooth, the command structure is basic serial
messaging structure.
Scope
This covers the design of the ARB Accessories Controller ECU and gives specific technical
requirements and implementation details.
Electrical General Specifications
This covers the electrical specifications that apply to the unit as a whole.
shorted to battery.
more frequent than every 2 seconds.
Tablet and output load dropout is acceptable.
quiescent current.
Outputs
Item
Specification
Output count
25 (excluding brake PWM)
Load maximum power
5W per output
Load inductive energy
6mJ maximum It is assumed that the
Inrush current handling
Not required
Fault diagnostics
Not required
Short circuit handling
Tolerant of short circuit to ground
Short to battery
This can back feed through and power the
Proportional trailer brake PWM output
12VDC, 100W, PWM approx. 100Hz
Input count
8
Input
Voltage low
<0.5VDC
Input Voltage high
>4.5VDC
Wetting current
5mA nominally
PWM voltage tolerant
On High Beam, Low Beam and
Reverse
100Hz maximum PWM rate
Battery monitor input count
2 external and 1 internal from the
Battery monitor input range
0‐15VDC
Battery monitor accuracy
Error less than 5%
5V Analogue input count
7
5V Analogue input power feed
0.5A maximum
5V Analogue input range
0‐5VDC
USB USB2.0
USB connector type
Type A female connector
USB 5VDC charge current
1.4A maximum
RF
Bluetooth V4.0 compliant, SSP profile,
outputs primarily drive relays.
unit
Digital Inputs
Item Specification
20Hz minimum PWM rate
Analogue Inputs
Item Specification
battery in
Communications
Item Specification
Environment
Item Specification
client/slave
Temperature range ‐10C to +60C
Water proofing
Not required
Conformal coating
Not required
Enclosure
Custom plastic injected moulding
EMC susceptibility
Automotive transients present on power
Bluetooth module
Must have type test and on board antenna
EMC
CISPR 22:2009 + A1:2010 Class B (primary EMC
requirement)
AS/NZS 4268 (Bluetooth for modules on PCB
–
supply, inputs and
Certifications
Item Specification
no RF paths outside module)
FCC Part 15.19 Caution:
1. This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions:
(1) this device may not cause harmful interference and
(2) this device must accept any interference received, including interference that
may cause undesired operation
2. This device and its antenna(s) must not be co‐located or operating in conjunction with
any other antenna or transmitter.
3. Changes or modifications to this unit not expressly approved by the party responsible for
compliance could void the user authority to operate the equipment.
IMPORTANT NOTE:
FCC Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an
uncontrolled environment. This equipment should be installed and operated with
minimum distance 20cm between the radiator & your body.
FCC Statement in User’s Manual (for calss B)
FCC Section 15.105
“Federal Communications Commission (FCC) Statement”
This equipment has been tested and found to comply with the limits for a lass B
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential
installation. This equipment generates uses and can radiate radio frequency energy
and, if not installed and used in accordance with the instructions, may cause
harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
-- Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment and receiver.
-- Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
-- Consult the dealer or an experienced radio/TV technician for help.
ARB Product Testing
30/01/2017
Kit Contents:
1 x Controller
1 x Display
1 x USB Cable
Page 1 of 10
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