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ARB Pressure Control Module, 181002A, ECU specification

ARB Pressure Control Module, 181002A, ECU specification

Overview

The ARB Pressure Control Module (PCM) is a system for controlling the ARB Pressure Regulating

Valve (PRV) and an ARB Compressor, mostly for the purpose of tyre inflation and deflation. The

system is composed of two parts: an electronic control unit (ECU), and a smart phone app. The ECU

will control the compressor and the PRV with wired connections to achieve a target pressure, while

the smart phone app will provide the user with a graphical interface to perform functions like turn

the compressor on and off, set the target pressure, and display a live pressure readout. The

communication between the smart phone app and the ECU is Bluetooth.

The ARB Air Suspension Control Module (ASCM) is a system for controlling vehicle air suspension

pressure through the ARB Pressure Regulating Valve (PRV) and ARB Air Suspension Isolating Valves.

The system is composed of two parts: an electronic control unit (ECU), and a smart phone app. Using

wires connected, the ECU will activate the isolating valves to select the air suspension component

and control the PRV to achieve a target pressure. While the smart phone app will provide the user

with a graphical interface to perform functions like setting the target pressures, and displaying a live

pressure and voltage readout. The communication between the smart phone app and the ECU is via

Bluetooth® Low Energy (BLE).

Scope

This covers the design of the ARB Pressure Control Module 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.

Item

Specification

Input battery voltage range

12VDC for normal operation

Load dump

Load dump tolerant

Cranking voltage

Crank voltage of 6VDC for 1 second with no

reset to the MCU.

Tablet and output load dropout is acceptable.

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

shorted to battery.

Quiescent current

There is no requirement for a specific

quiescent current.

Summary of content (3 pages)

PAGE 1
ARB Pressure Control Module, 181002A, ECU specification Overview The ARB Pressure Control Module (PCM) is a system for controlling the ARB Pressure Regulating Valve (PRV) and an ARB Compressor, mostly for the purpose of tyre inflation and deflation. The system is composed of two parts: an electronic control unit (ECU), and a smart phone app.
PAGE 2
Loose battery terminals Momentary interruption in power supply (loose battery terminal). The module shall not reset for battery dropouts less than 50ms no more frequent than every 2 seconds. The unit is not fused. It relies on upstream fusing. 6.3mm spade terminals <2A Fusing Battery connections Total current Digital Outputs Item Output count Load maximum power Load inductive energy Specification 3 5W per output 6mJ maximum It is assumed that the outputs primarily drive relays.
PAGE 3
Certifications Item Bluetooth module EMC Specification Must have type test and on board antenna RCM, CE and FCC for sales in Australia, Europe, North and South America, Middle East, Africa Material Item SoC compliant Specification Must comply to RoHS, ARB specification S01106 NOTE: This equipment has been tested and found to comply with the limits for a class B digital device, pursuant to Part 15 of the FCC Rules.