CW-425
Quiescent current measurement
The CW-425 offers a simple possibility to obtain highly precise measurements of the no-load and working currents of devices. The CW-425 offers a total measurement range of 0-30 A, divided into two measurement ranges 0 µA to 80 mA and 80 mA to 30 A. It is possible to switch from one measurement range to the other virtually seamlessly within a maximum of 2 µs during ongoing operations.
The measured values are transmitted via a CAN interface. Devices settings such as baud rate of the CAN bus and output transfer rate can easily be configured via CAN messages. It is possible to read in a description file (dbc file) in software tools to display the measured values. The insulation voltage of up to 1000 VDC between the measuring circuit and the control circuit offers sufficient protection for other devices in the control circuit.
The module is available as a favourably priced top-hat rail version as well as in a rugged desktop housing that offers a higher protection class. The CW-425 is destined for automated measurement of no-load and working currents of control units, for example in automotive environments. At the same time the CW-425 is an ideal supplement for our CW-300 series designed for test bench applications.
PERFORMANCE CHARACTERISTICS
- Single device to measure no-load and working current
- Measurement range from 0 µA to 30 A
- Accuracy of 0,04 % in lower measurement range
- Dynamic, seamless changeover of measurement channels
- Control via CAN bus
- Top-hat rail housing and rugged desktop housing available
Current measurement channel
| Number: | 1 |
| Measurement range: | 0 μA to 30 A (total) |
| Measurement range 1: | 0 μA to 10 mA, resolution 1 μA, accuracy 0,04 % (rel. to measurement range) |
| Measurement range 2: | 10 mA to 80 mA, resolution 1 μA, accuracy 0,06 % (rel. to measurement range) |
| Measurement range 3: | 80 mA to 30 A, resolution 1 mA, accuracy 1,5 % (rel. to measurement range) |
| Connector: | Pin-connector with 4 mm laboratory plugs or 7 mm cable lug |
| Measuring range switch-over: | Automatic switch-over between measurement ranges in 2 μs |
CAN-interface
| Number: | 1 |
| Type: | ISO 11898-2 (Highspeed) CAN-Protokoll Version 2.0 A und 2.0 B, supports SAE J1939 (29-Bit-Identifier) |
| Data rate: | 50, 100, 125, 250, 500, 800 und 1000 kbit/s |
| Termination: | 120 Ω, optional activation via Jumper |
| Connector: | Phoenix-connector MC 1,5/2-ST-3,81 (2-pin) |
power supply
| Supply voltage: | 12 VDC to 24 VDC |
| Current consumption: | 85 mA at 12 VDC |
| Connector: | Phoenix-connector MC 1,5/3-ST-3,81 (3-pin) |
Environmental conditions
| Temperature range operation: | -20 °C to +65 °C |
| Temperature range storage: | -20 °C to +85 °C |
| Relative humidity: | 35 % to 85 % non-condensing |
General information
| Housing: | 45 mm DIN-Top-hat rail housing, optional rugged desktop housing |
| Dimensions (LxWxH): | 126 mm x 110 mm x 35 mm |
| Weigth: | 180 g |
| Calibration: | DAkkS-Calibration on request |
Download
Datasheet CW-425
Download (PDF)Back to the overview | CW-400 Series