VT2004A | VT2004A FPGA

The VT2004A manages up to four inputs of an ECU to which vehicle sensors such as temperature probes or switches are connected. This module is also available as a variant (VT2004A FPGA) with user programmable FPGA.

Stimulation Module: VT2004A | VT2004A FPGA

Functions for Each Channel

Various signal paths to the original sensors and bus bars are switched via relays. The relays may be used, for example, to generate short circuits to ground or to battery voltage via a bus bar, or to break the line to an original sensor (broken wire simulation).
Relay for short circuits between the input lines
Voltage stimulation
Decade resistor for the sensor simulation
Generation of a PWM signal as input signal for the ECU
Simulation of a potentiometer as a sensor (on channel 1)

Furthermore, it is possible to reverse the two-line connections of the two bus bars via relays (combined for all channels of a module).

VT2004A
	Input voltage	-40 V … +40 V
	Input current	Max. 800 mA
Voltage Stimulation
	Output voltage range	0 … 40 V
	Accuracy (at 25 °C)	± (0.05 % + 15 mV)
	D/A converter (per channel)	14 Bit
	Slew rate (resistive load, 20 mA)	Typ. 20 V/µs
	Output current	Max. 150 mA
	Frequency of generated PWM signal	20 mHz … 25 kHz
Decade Resistor
	Resistance, channels 1 - 3	10 Ω … 10 kΩ
	Resistance, channel 4	1 Ω … 250 kΩ
	Tolerance (higher tolerance value applies)	±(2 % + 2 Ω)
	Current carrying capacity	Max. 200 mA
	Load capacity	Max. 3.5 W
	Switching time between two resistances	Max. 500 µs
Potentiometer Simulation (Channel 1 only)
	Input potentiometer ref. voltage	0 … 40 V
	Input impedance	Typ. 4 kΩ
Basic Data
	Supply voltage (via backplane)	12 V ±10 %
	Power consumption (all relays off)	Typ. 3.5 W
	Power consumption (10 relays active)	Typ. 5 W
	Temperature range	0 … 55 °C
	Dimensions (L x W x H)	300 x 173 x 36 mm
	Weight	Approx. 400 g
Maintenance
	Calibration recommended	every 12 months
	Accredited (pre/re) calibration according to	ISO/IEC 17025:2017