User manual for the M-Line M1-3VR4B.0001.770DD 4‑digit panel instrument with direct voltage/current measurement and visual limit monitoring.
The M1‑31 panel instrument is a 4‑digit device for direct voltage (0‑10 VDC) and current (0‑20 mA) signals, featuring visual limit value monitoring, a programmable interlock, and optional colour displays. Configuration can be performed via three front keys or the PC‑based PM‑TOOL software.
The manual covers assembly, wiring, function description, parameterisation (standard and extended), safety advice, error handling and technical specifications such as housing dimensions, protection class IP65, and measurement ranges.
| Housing dimensions (mm) | 96 × 24 × 60 |
|---|---|
| Display digits | 4‑digit |
| Display range | -1999 to 9999 |
| Protection class (front) | IP65 |
| Power supply (AC) | 230 VAC ±10 % max 3 VA |
Use the reset function to restore the parameters to the delivery condition as described in the manual.
The front of the device is protected to IP65.