The Lovato 31 RGAM 12 is a microprocessor-based automatic transfer unit designed for managing generator operations, primarily focusing on automatic mains failure (AMF) functions. It monitors engine and alternator parameters and manages the changeover between mains and generator power. Key Specifications Power Supply: 12VDC (operating range: 6.2–16.5VDC).
Mains Voltage Control: Supports single or three-phase systems (70–624VAC).
Generator Voltage Control: Single-phase monitoring (70–624VAC).
Communication: Standard version includes an RS232 port for PC or modem connection; "RC" versions feature an RS485 port. Core Functionality & Modes
The unit features a front panel with a 3-digit display and LED indicators for status and alarms.
Manual: Allows direct user control over starting and stopping.
Automatic: Automatically starts the generator and switches power during a mains failure.
Test: Runs the generator without switching the load to verify operational readiness. Programming & Setup
Configuration can be performed via the front keypad or specialized software.
Accessing Menus: Typically involves holding the RESET key while following a specific button sequence (e.g., START x2, STOP x3, MEAS x4) to enter "SET" mode.
Modifying Parameters: Use the MAINS/GEN keys to navigate menus and MEAS/TEST keys to select specific parameters.
Saving: Press the RESET key to save changes and exit the configuration menu. Common Alarm Codes
The unit monitors critical engine and alternator functions, displaying codes such as: A01: Low oil pressure. A02: Engine overheating. A04: Failure to start. A05/A06: Battery voltage anomalies (low/high). Documentation Links
Detailed technical manuals and software guides are available through these platforms:
Technical Data & Installation: Consult the RGAM Series Control Unit Guide (Amitron) for wiring and electrical specifications.
User Manuals: Comprehensive guides can be found on Scribd - 31RGAM12 Complete or Scribd - RGAM Controller.
Software Instructions: For remote monitoring setup, refer to the RGAM Software Manual (Svaltera). AI responses may include mistakes. Learn more
If you are using floppy disks: Close all applications. Insert the first disk (1) into drive A : Start the setup program by double- СВ Альтера Lovato RGAM Automatic Transfer Unit Guide | PDF - Scribd lovato 31 rgam 12 user manual
Understanding the Lovato 31 RGAM 12: A Comprehensive Guide The Lovato 31 RGAM 12 is a specialized automatic mains failure (AMF) controller designed for managing engine-driven generator sets. If you are looking for the "user manual," you are likely trying to install, program, or troubleshoot this specific module.
While the physical booklet is often tucked away in a control panel, this guide serves as a comprehensive overview of the technical specifications, wiring logic, and programming steps required to get your RGAM 12 up and running. 1. Device Overview
The RGAM 12 is part of Lovato Electric’s legacy series of controllers. It is engineered to monitor a single-phase or three-phase mains supply and automatically start a generator if the mains voltage falls outside of preset limits. Once the generator is running and stable, the RGAM 12 manages the transfer of the load from the mains to the generator. Key Features:
Automatic Start/Stop: Initiates the engine crank cycle upon power failure.
Engine Protection: Monitors oil pressure, engine temperature, and fuel levels.
Voltage Monitoring: Tracks under-voltage and over-voltage conditions.
User Interface: Features LED indicators for status updates and tactile buttons for manual control. 2. Technical Specifications
Before wiring the device, ensure your system matches these electrical requirements:
Supply Voltage: Typically 12VDC (indicated by the "12" in the model name). Mains Voltage Input: 100–480VAC. Operating Temperature: -20°C to +60°C.
Outputs: Relay outputs for fuel solenoid, starter motor, and alarm signaling. 3. Installation and Wiring
The back of the RGAM 12 features a series of screw terminals. Accurate wiring is critical to prevent damaging the controller or the generator’s alternator. Basic Terminal Mapping:
DC Power (Terminals 1 & 2): Connect to the 12V battery. Ensure correct polarity (Terminal 1 is usually negative/ground).
Mains Sensing: Connect the mains phases to the designated sensing inputs to allow the device to detect power outages.
Generator Sensing: Connect the alternator output phases so the controller knows when the generator has reached the correct voltage and frequency. Control Outputs: Start: Connects to the starter motor relay. Fuel: Connects to the fuel stop-solenoid.
Digital Inputs: Connect sensors for Low Oil Pressure (LOP) and High Engine Temperature (HET). 4. Front Panel Operation
The RGAM 12 interface is designed for simplicity. It usually features three primary modes:
OFF: The controller is disabled. No automatic functions will occur, and the engine cannot start. Use this mode during maintenance. The Lovato 31 RGAM 12 is a microprocessor-based
MAN (Manual): Allows the operator to start and stop the engine manually using the "Start" and "Stop" buttons.
AUT (Automatic): The standard operating mode. The device constantly monitors the mains and will take over automatically during a blackout. 5. Programming and Configuration
To access the internal settings (thresholds, timers, and delays), you must enter the programming mode. Common Adjustable Parameters:
Mains Delay: The time the controller waits after a power failure before starting the engine (to avoid "nuisance starts" during momentary flickers).
Crank Time: How long the starter motor engages during an attempt.
Cool-down Timer: How long the generator runs without a load before shutting down once mains power returns.
Voltage Thresholds: Setting the "Low Voltage" limit (e.g., 180V on a 230V system) that triggers a start. 6. Troubleshooting Common Issues
If your RGAM 12 isn't behaving as expected, check the following:
"Fail to Start" Alarm: This occurs if the engine undergoes its set number of crank attempts without firing. Check fuel levels, battery strength, and the fuel solenoid.
Device Won't Power Up: Verify the fuse on the DC supply line and check that the battery voltage is at least 10.5V.
Mains Not Detected: If the mains are healthy but the generator keeps running, check the sensing fuses or the voltage calibration in the settings.
The Lovato 31 RGAM 12 is a "set and forget" device. Once the wiring is verified and the timers are calibrated to your specific engine's needs, it provides reliable protection for your facility.
Always consult a qualified electrician or generator technician before modifying high-voltage control panels.
Lovato 31 RGAM 12 is a microprocessor-based automatic mains failure (AMF) controller designed to manage stand-by generating sets. It monitors the main power grid and automatically starts the generator during outages or power anomalies, handling the transfer of the load between sources. 🛠️ Key Technical Specifications Supply Voltage: 12VDC (operating range 6.2–16.5VDC).
Mains Control: Three-phase monitoring (L1-L2/N-L3) with asymmetry detection.
Generator Control: Single-phase control with RMS voltage and frequency readings.
Display: Alphanumeric LED or LCD (depending on revision) for alarms and parameters. What it is: Hysteresis is the difference between
Connectivity: Integrated RS232 port for PC setup and supervision. 🕹️ Operational Modes
The front panel typically features keys to select the following states:
OFF: The unit is disabled; no automatic starting will occur.
MAN (Manual): Allows the operator to start and stop the engine manually.
AUT (Automatic): The standard mode where the unit monitors the mains and starts the generator if power fails.
TEST: Forces the generator to start to verify performance without necessarily switching the load. 📋 Measured Data & Monitoring
The unit provides a real-time overview of the following parameters:
Electrical: Mains line-to-line voltage, generator frequency, and battery voltage.
Engine: Operating hours, engine speed, and (if sensors are fitted) oil pressure and temperature.
History: An event log storing the last 255 events (starts, stops, and alarms) with timestamps. ⚠️ Alarm Management
The 31 RGAM 12 provides visual and relay-driven alerts for critical issues:
Mains Anomalies: Undervoltage, overvoltage, or phase sequence errors.
Generator Faults: Failure to start, low frequency, or voltage outside limits.
Engine Protection: Low oil pressure, high temperature, or low fuel level. 💻 Software & Configuration
You can perform advanced setup using the Lovato RGAM software: Lovato RGAM Controller Manual | PDF - Scribd
This is perhaps the most useful feature to understand to prevent your equipment from "chattering" (turning on and off rapidly).
The Lovato 31 RGAM 12 belongs to the RGAM series of thermal overload relays. It is designed to be used in conjunction with Lovato’s BF series contactors, specifically the BF09 to BF38 models, but it can also be used as a stand-alone protection device.