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 ±150 A, divided into three measurement ranges. The change from one measuring range to another is possible almost seamlessly during operation.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. The module is available in a rugged desktop housing, a holder for a top-hat rail for installation in a test bench is also offered.
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.
| Quantity | 1 |
| Measuring range total | ±150 A |
| Measuring quiscent current | ±100 mA |
| Deviation 0 µA to 100 mA | 0,05 % from measured value + 0,006 % from full scale |
| Deviation 100 mA to 150 A | 0,15 % from measured value + 0,02 % from full scale |
| Series resistance and voltage drop | 1 Ω to 100 mA, 700 µΩ from 100 mA |
| Resolution | 1 µA |
| Connector | Amphenol Connector |
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| Quantity | 1 |
| Type | ISO 11898-2 (high-speed) CAN protocol version 2.0 A |
| Data rate | 500 kBit/s |
| Termination | 120 Ω, optional activation via Jumper |
| ID | 16, CAN-ID conifugable via switch |
| Output rate | Up to 500 Hz |
| Connector | Lemo EPG.1B.304 (for CAN-Bus and Power Supply) |
| Quiescent current to load current | 1 µs, with positive current flow |
| Quiescent current to load current | 30 ms, with negative current flow |
| Load current to quiescent current | 30 ms |
| Supply voltage | 9 VDC to 30 VDC |
| Current consumption | 100 mA at 12 VDC |
| Galvanic isolation | 1000 VDC (between measuring circuit and control) |
| Housing | Robust desktop housing, 45 mm DIN-Top-hat rail holder optional |
| Dimensions (LxWxH) | 126 mm x 110 mm x 35 mm |
| Weigth | 180 g |
| Calibration | Factory Calibration DAkkS-Calibration on request |
