Bcm Auto Parts

Figure 1 Module appearance

Appearance and size

The basic dimensions of the module are shown in the figure above. If specific dimensions are required, please refer to the design drawing.

Technical Parameters

Input / Output

Modules

2-way 12A power output

13 channels 9A power output

6-way 4A power output

2-way 2A power output

6-way 1A power output (with reverse protection )

1 channel 4A low-side power output

1 12V power output

1 channel 5V power output

2-way C3 vehicle speed signal output

2- way vehicle speed signal output

2 high-side digital inputs

12 low-side digital inputs

2 floating digital inputs

8-channel AI analog input

Can measure resistance change signals, such as fuel signal or temperature sensor signal. Can measure resistance change range 0-500Ω

2 pulse inputs

Can measure engine RPM or vehicle speed

1 channel frequency range 0.5-2KHz, used for vehicle speed

1 channel frequency range 2Hz -20KHz, for speed

1 low-side wake-up

1 CAN bus

1 ISO11898 (CAN2.0B) interface to communicate with the instrument main control module

You can choose whether to connect a 120Ω terminal resistor

Communication

1 ISO11898 (CAN2.0B) interface to communicate with the instrument main control module

CAN bus online and remote upgrade function

Communication protocol: canopen customized communication protocol

Connector

The module uses highly reliable Tyco automotive connectors

The module adopts 21-pin, 18-pin, 15-pin, 12-pin, 9-pin, and 6- pin plug-ins

Work Environment

Working temperature range: -30℃～+70 ℃;

Storage temperature range: -40℃ to + 85℃

Humidity and temperature: Temperature 55℃/humidity 93%, Temperature 25℃/humidity 97%

Electrical parameters

Power supply range : 12V～32V

Short circuit protection to ground or power supply

Protection against polarity inversion

Power consumption : ≤ 180W

Current in sleep mode: less than 2 mA

EMC/EMI performance

(BCI) on the wiring harness

Anti-conducted interference: BCI according to ISO11452-4, 50mA, Class B

Electrical interference on power lines and high input (ISO7637-2 )

Pulse 1: -450V; Ri = 50 ; td = 1ms, t1 = 1s, Class C. Pulse 2a: +50V; Ri = 2 ; td = 0.05ms, t1 = 1s, Class B. Pulse 2b: +20V; Ri = 0.05 ; td = 0.5s, Class C

Pulse 3a,3b: ± 200V; Ri = 50 ; td = 0.1µs, Class A

Pulse 4: Us = -12V; Ua = -5V; t7 = 100 ms; t9 = 10s, Class B

1.The connector arrangement of the IM228 module is shown in Figure

2.The connector names from left to right are CN1, CN2, CN3, CN4, CN5, and CN6.

Figure 2 Schematic diagram of IM228 module connector layout

CN1 terminal harness plug sheath AMP: 1-967625-1 ( female - brown )

CN2 terminal harness plug sheath AMP: 1-967624-1 ( female - gray )

CN3 terminal harness plug sheath AMP: 1-967621-1 ( female -- yellow )

CN4 terminal harness plug sheath AMP: 1-965640-1 ( female - blue )

CN5 terminal harness plug sheath AMP: 1-967622-1 ( female -- green )

CN6 terminal harness plug sheath AMP: 1-967623-1 ( female - purple )

Different models and configurations of IM228 modules have different functions and their pin definitions are also different. The IM228 module interface definition is shown in Table 1.

Table 1 Module pin definition

Heat dissipation

The system equipment generates heat during operation. Please do not install the CAN bus module near overheating parts such as exhaust pipes.

Avoid installing system equipment in narrow spaces to prevent accelerated aging or damage of the equipment.

Power limit per unit: The module has thermal power consumption limit, the thermal power consumption is 11W at an ambient temperature of 50℃, and the thermal power consumption is 7W at an ambient temperature of 70℃

Mechanical structure

Fixing and vibration

Use 6 flat head screws, with or without locking washers, tighten 10N/m

Installation surface flatness : 0.5mm/100mm

Surface protection grade

The dust and water resistance level of the digital LCD instrument is IP40 (after installation on the instrument panel). When the module uses a sealing gasket on the connector, the dust and water resistance level is not less than IP65 (to prevent dust intrusion and water splashing).

illustrate:

When installing and using system equipment, take all necessary precautions to prevent liquids from entering or accumulating on or inside the equipment.

System equipment is sensitive to mechanical shock. Be careful to prevent it from falling during movement, installation and use.

Electromagnetic compatibility

Wiring harness installation requirements:

Generally speaking, the connection between sensors and system equipment should be as short as possible.

Analog signals should be shielded or close to the ground

Sensitive signal (high-precision analog signal) cables should be kept away from high-current cables

The cross-sectional area of the cable that transmits the oscillation signal (such as PWM signal, minimum current 1A) should not be less than 1mm2 and should be arranged close to the ground wire.

Cables are not placed near metal structures

Installation location

The module is installed vertically (heat sink vertically).

For CAN bus products, please disconnect the power supply when connecting or disconnecting the wiring harness connector, otherwise it will affect the service life and even damage the product.

Battery charging equipment sometimes generates instantaneous high voltage that exceeds the standard voltage, which may damage or even destroy the equipment's surge protection components. Precautions: Disconnect equipment while battery is charging.

ECU Impedance between sensor and actuator

To ensure correct operation and short-circuit current protection, the impedance between the ECU and the sensor/actuator must meet the following requirements (including the impedance of the cable and connector)

Battery "+" pole impedance 0.3Ω

Battery "-" pole impedance 0.3Ω

The impedance between the sensor ground and the vehicle body ground is < 1Ω Output:

LS5A output impedance < 1.2Ω

HS1.5A output impedance < 6Ω

HS2A output impedance < 3Ω

HS3.2A output impedance < 3Ω

HS7A output impedance < 2Ω

HS9A output impedance < 0.6Ω

Input characteristics

Analog signal input

For specific parameters of the analog signal input voltage range, please refer to the digital LCD instrument or module input signal Technical characteristics. The input is protected against voltage surges. However, the analog detection characteristics cannot be guaranteed during voltage surges.

Key Points

The emergency signal input should be connected to the main control module (digital LCD instrument) to ensure normal operation when the CAN network fails.

The input pin is protected against surge voltage up to 50V ( e.g. inductor demagnetization).

Output Characteristics

Output open circuit detection

Open circuit detection threshold between meter and module:

LS output impedance < 200KΩ (battery voltage 28V)