The Nokeval 641 user manual provides installation, configuration, troubleshooting, and technical data for the 3‑way galvanic isolator and signal converter.
The Nokeval 641 is a 3‑way galvanic isolator and signal converter that separates input and output signals while providing conversion between current (mA), voltage (V) and millivolt (mV) ranges. It supports bipolar signals and can be configured for various standard ranges via DIP switches and a jumper.
The manual covers installation on a DIN rail, wiring guidelines, configuration of ranges and damping, troubleshooting tips, and technical specifications such as dimensions, operating temperature, isolation voltage and power consumption.
| Dimensions (W×H×D) | 22.5 mm × 82 mm × 99 mm |
|---|---|
| Weight | 106 g |
| Mounting | DIN rail (DIN 46277) |
| Operating temperature | 0 … 45 °C |
| Isolation voltage | 1000 V (input‑output) |
| Power supply | 24 VDC ±10 % |
| Input resistance (current) | 50 Ω |
| Maximum output load | 600 Ω |
The device requires a 24 VDC power supply with a tolerance of ±10 %.
The isolation rating is 1000 V between input and output.