Lovato 31 Rgam 12 User Manual -
Three-phase L1-L2-L3 (with or without neutral) up to 480VAC.
The controller manages the transfer between utility and generator power through three main modes:
Users can navigate the front panel menu to set parameters such as: Voltage thresholds (high/low). Frequency thresholds. Generator start/stop delay timers. Mains fail detection time. Software Configuration
The "31 RGAM 12" usually refers to the specific product code indicating: lovato 31 rgam 12 user manual
Later, back in the workshop, Marco filed the manual into the regulator’s case and ran his thumb over the cover. He was a practical man who knew the value of measurements and tolerances, but he also believed in small rituals. He wrote, on the inside cover in precise block letters, the date and a short note: “Used in storm, generator stable. — M.R., 04/09/2026.” He added a tiny doodle of a lighthouse.
The series is a family of heavy‑duty rotary cam switches designed for industrial and commercial electrical applications. They are modular, compact, and rated up to 31A (depending on model). The switch you reference — RGAM 31 12 — is likely a 31A, 12‑terminal device used for changeover (transfer) or selector functions.
Connect via a 5A inline fuse to the battery positive terminal. Three-phase L1-L2-L3 (with or without neutral) up to 480VAC
If you can confirm the exact model number from the device’s label (e.g., RGAM 12 / 31 / something else), I can provide the correct original manual content or a precise report. You may also download the official Lovato manual from the (Documents → Rotary Switches → RGAM series).
| Parameter | Description | Typical Value | Why it matters | | :--- | :--- | :--- | :--- | | | Mains undervoltage threshold | 184V (for 230V nominal) | Prevents transfer when grid voltage sags. | | P03 | Mains return delay (Timer T1) | 60 seconds | Ensures the grid is stable before re-transfer. | | P05 | Generator starting delay (Timer T2) | 5 seconds | Gives the generator time to start before the controller tries to transfer. | | P07 | Generator stabilization delay (Timer T3) | 10 seconds | Allows generator voltage/frequency to stabilize. | | P10 | Generator stop delay (Timer T4) | 180 seconds | Cool-down period for the generator after load is removed. | | P15 | Remote test enable | 1 (Enabled) | Allows a remote switch to simulate a mains failure. | | P22 | Display language | English / Italian | Sets the LCD text language. |
Connect directly to the engine block or the negative terminal of the 12V starter battery. Use a heavy-gauge wire to minimize ground loops. Generator start/stop delay timers
Users can extend the controller's capabilities using the software. This allows for:
Three-phase utility voltage, single-phase generator voltage, and battery health. Operating Modes: Off, Manual, Automatic, and Test. 🛠️ Installation and Wiring Diagram Guidelines
If you want, I can:
Duration the engine runs without load before shutting down.
: Parameters can be programmed directly via the front keypad or through a PC using the RGAM remote control software Interface and Indicators LED Display