VT1004A | VT1004A FPGA
Load and Measurement Module
The VT1004A module is connected to up to 4 outputs of an ECU, which are connected to actuators such as servo motors or lamps in real-vehicle operation mode.
This module is also available as a variant (VT1004A FPGA) with user programmable FPGA.
Characteristics
Functions for Each Channel
- Various signal paths to the original loads 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 load (broken wire simulation).
- Relay for short circuits between the input lines
- Electronic load for predefined current or resistance with electronic overload protection
- Voltage measurement with calculation of instantaneous, average and effective values
- Determination of PWM signal parameters (frequency, duty cycle, high and low voltage levels)
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
| VT1004A | ||
| Input voltage | -40 V … +40 V | |
| Continuous current (relay closed) | 16 A | |
| Current ≤ 10s (relay closed) | 30 A | |
| Switched current at voltage ≤ ±18 V | 25 A | |
| Switched current at voltage ≤ ±32.7 V | 8 A | |
| Switched current at voltage ≤ ±40 V | 4 A | |
| Electronic Load | ||
| Constant resistance mode | ||
| – Working range | 1.5 … 400 Ω | |
| – Accuracy (resistance ≤ 20 Ω, voltage ≥ ±12 V) | ±10 % | |
| Constant current mode | ||
| – Working range | 0.1 … 10 A | |
| – Accuracy | ±(0.5 % + 50 mA) | |
| Settling time | 30 ms | |
| Load capacity (all channels together) | Typ. 30 W | |
| Peak load ( 2s) | Max. 120 W | |
| Voltage Measurement | ||
| Accuracy (at 25 °C) | ± (1.2 % + 80 mV) | |
| A/D converter (per channel, internal) | 16 Bit / 250 kSamples/s | |
| PWM frequency for PWM measurement | 20 mHz … 200 kHz | |
| Basic Data | ||
| Supply voltage (via backplane) | 12 V ±10 % | |
| Power consumption (all relays off) | Typ. 4.5 W | |
| Power consumption (12 relays active) | Typ. 20 W | |
| Temperature range | 0 … 55 °C | |
| Dimensions (L x W x H) | 300 x 173 x 36 mm | |
| Weight | Approx. 1,150 g | |
| Maintenance | ||
| Calibration recommended | every 12 months | |
| Accredited (pre/re) calibration according to | ISO/IEC 17025:2017 | |
