Automotive Relay

Introduction to the product

Automotive relays are the common type of electromechanical relay that are used in all types of vehicles, like car, trucks, vans and trailers. They enable a small current flow circuit to control and operate a higher current circuit in vehicular applications and can be used with various solutions and provide useful use cases.

Configuration guide

This guide provides the configuration steps for Immobilizer relay with Transight Telematics devices using commands.

• Command Format

SET CUIOCFG:<IO Number>-<IO Mode>-<IO Function*>

• Example

SET CUIOCFG:IO1-DO-IMB*

• Expected Response

IMEI: 862942074896945
 Command: SET CUIOCFG:IO1-DO-IMB*

 Response:  
Error : 0

• Verification Command

GET CUIOCFG

• Expected Verification Response

IMEI: 862942074896945
 Command: GET CUIOCFG
 
 Response: CUIOCFG:
IO1-AN-GEN*IO2-DI-GEN*IO3-DO-IMB 
Error : 0

• Immobilizer ON/OFF Commands

SET CUIMOB:ON

SET CUIMOB:OFF

• Immobilizer check Command

GET CUIMOB

• Expected Response Format

IMEI: 862942074896945
 Command: GET CUIMOB
 
 Response: IMOB:OFF 
Error : 0

Immobilizer Scenario

The immobilizer relay operates through the Digital Output (DO) function of the Transight Telematics device. The general-purpose I/O pins are multiplexed and configurable. The pin configuration for the immobilizer is provided below.
The immobilizer will only activate when the following conditions are met at the time of sending the command:
1. Vehicle ignition is OFF, or
2. Vehicle ignition is ON and GPS fix is active, or
3. Vehicle ignition is ON and vehicle speed ≤ 10 km/h.

Wiring Information

Relay PIN	Relay cable color	Connection
85	Black	Coil
86	Red	Coil
87	Green	Normally Open (NO)
87a	Green	Normally Closed (NC)
30	Green	Common connection to NO & NC terminals

Product Specification

Parameter	Value
Contact Rating	30A/40A 14VDC
Coil Voltage	12VDC
Coil Power	1.8W
Release Voltage	≥10%
Pickup Voltage	≤70%
Insulation Resistance	100Ω
Contact Resistance	100Ω
Between open contact	500VAC
Between coil & contact	750VAC
Temperature Range	-55~+85℃
Dimension	25.0x27.4x28.4
Weight	40g
Supported by	DISCOVERY-116A, DISCOVERY-126A, DISCOVERY-206A, DISCOVERY-226A, DISCOVERY-296A,