VT2004A | VT2004A FPGA
Stimulation Module
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.
Characteristics
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).
Technical Data
| 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, ± (1 % + 2 Ω) 100 Ω … 25 kΩ, ± (2 % + 2 Ω) 25 kΩ … 150 kΩ, ± (10 % + 2 Ω | |
| Resistance, channel 4 | 1 Ω … 100 Ω, ± (1 % + 2 Ω) 1 Ω … 250 kΩ, ± (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 | |
