battery testing system fluxgate current sensor DXE-CAB500

Current transducer DXE500CAB               I_{P N} = 500 A

The zero bias current is less than 10mA due to the use of a flux gate principle, no hysteresis effect, still present after 1000A high current impact capable of maintaining low bias and high accuracy characteristics.

Especially suitable for high accuracy power battery level monitoring management system applications.

All functions and environmental usage conditions of the sensor meet the requirements of automotive grade level.

Features

● Good linearity-Linearity error<0.1%

● Wide voltage supply-Power supply voltage+11V -+30V

● Power protection function-Overvoltage automatic protection

● Good accuracy-Accuracy: 0.2%-Temperature drift<50ppm

● Digital communication-High speed CAN2.0 interface

● Sensor operating temperature range: -40 ℃ - +105 ℃

Application Domain

● Electric vehicle Battery management system (BMS)

● Electric Vehicle Battery System Distribution Box (BDU)

● High voltage distribution box (PDU) for electric vehicles

● Energy Management of Industrial Lithium Batteries

● Equipment Ground Tank Backup Power

Electrical data

Parameter	specifications			Condition
	Minimum value	Standard value	Maximum value
Rated input IPN=	-500A		500A	/
Measure range IPM=	-600A		600A
Power supply current UC	11V	12V/24V	30V
Working current @Ip=0A IC		30mA		Uc=12V,T=25℃
Working current @I PM IC		160mA		Uc=12V,T=25℃
Linearity Error L	-0.001		0.001	±30℃
Zero deviation @ Ip=0A Io	-10mA		10mA	±30℃
Accuracy @ Ip=± 40A XG	-60mA		-60mA	±30℃
Operating temperature TA	-40℃		105℃
Zero temperature drift Toff		0Ma/K
Gain temperature drift Tgain	-50ppm/K		50ppm/K	±30℃
Output noise	-10mA		-10mA

CAN Data Format

Message     Description	CAN ID	Data   length	Message     launch type	Signal                    description	Signal                       name	Start bit	Length
Return       Current IP     (mA)	0X3C2	8 bytes	Cyclic transmitted message 10ms cycle	IP Value: 80000000H=0mA 7FFFFFFFH=-1mA 80000001H=1mA	IP-VALUE	24	32
				Error indication                0 = Normal 1 = Failure	ERROR INDICATION	32	1
				Error Information	CSM_FAIL	33	7
				NAME	PRODUCT_NAME	48	16
				CRC-8                        POLY: 8+X2+X+1	CRC_8	56	8

Error information

Error description	IP VALUE	ERROR INDICATION	ERROR INFORMATION
Invalidation error	FFFFF FFFH	1	40H
Current exceeds 600A	FFFFF FFFH	1	41H
Overfrequency oscillation exceeding 10ms（>2.5kHz）	FFFFF FFFH	1	44H
The magnetic ring does not oscillate more than 20ms	FFFFF FFFH	1	46H
Entering Failure Mode	FFFFF FFFH	1	47H
No signal exceeding 100ms	FFFFF FFFH	1	49H
Overvoltage（>32V）	FFFFF FFFH	1	4AH

CAN electrical parameters

● CAN2.0

● CAN oscillator tolerance: 0.27%

● Baud rate: 250kpbs

● External resistance: 120Ω

● Data pattern: big-endian

Mechanical characteristics

● General tolerance: ± 0.5 mm

● Other tolerance execution: GB/T 1804-2000-m

● Fixing hole size: Disc installation φ 6.5mm

● Fasten screw: M6

● Recommended fastening torque: 1.8Nm(± 10 %)

● Connector: Tyco AMP 1473672

● Shell material: PBT GF30

● Weight: 80g

● Pin material: tinned brass

● IP GRADE: IP56

Performance parameter definition

● Static output voltage (VQVO): Sensor output voltage in the absence of obvious magnetic field B=0G state

  -BR: The static voltage output VQVO has a constant ratio to the power supply voltage Vcc; VQVO= Vcc/

● Sens (sensitivity): Sens is the slope of the reference output line VOUT=VCC/2+2×IP/IP_MAX, which refers to the change in output as the current changes. Its relationship with the current is : Sens=2/IP_MAX

● Zero temperature drift (Off set with Temperature): Due to the tolerances of internal components, stress and heat dissipation factors, the zero point may shift under stable working conditions

● Sensitivity temperature drift (Sensitivity with Temperature): Due to the influence of the internal temperature compensation coefficient, the sensitivity will change over the entire operating temperature compared to the expected value at room temperature

● Zero point electrical offset voltage ( Electrical offset Voltage): The error caused by the noise of HALL components and the amplification factor of the internal operational amplifier itself is called offset voltage

● Response time : The response time of a sensor refers to the time interval between the final 90% of the applied current and the corresponding value of the sensor output to the applied current.

● Zero magnetic offset voltage ( Magnetic Offset): When the primary current reaches its maximum value of IP→0, the error generated at the output end due to the hysteresis phenomenon of the magnetic core material of the sensor is called the zero magnetic offset voltage.

NOTE

● Incorrect wiring may cause damage to the sensor. After the sensor is connected to a 5V power supply, the measured current passes through the direction of the sensor arrow, and the corresponding voltage value can be measured at the output end.

● -BR mode: Zero point output voltage VQVO=VCC/2, Gain fixed at 2V, The output curve is :VOUT=VCC/2+2×IP/IP_MAX;

If the power supply voltage changes within a certain range, it will cause a change in VOUT;

For example, VCC range 4.75V~5.25V, the static output voltage VCC corresponding to 0A has an output range of 2.375V~2.625V, and the gain does not change with VCC, fixed at 2V. Therefore, the output range of full scale VOUT(IPMAX) is 4.375V~4.625V.

-BF mode: Between VCC= 4.75V ~ 5.25V, the zero output voltage is fixed at 2.5V and the fixed gain is 2V. The output curve is: VOUT=2.5+2×IP/IP_MAX.