Model: TMM1
Brand: Lovato Electric
The Lovato Electric TMM1 is a versatile multifunction time relay designed for modular-slot switchboards. It offers a wide range of selectable time settings and operates across multiple voltages, making it suitable for various industrial and scientific applications.
Key features include:
Always ensure power is disconnected before installation or maintenance. Installation should be performed by qualified personnel in accordance with local electrical codes and regulations. This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm (Proposition 65 warning).
The TMM1 time relay is designed for mounting on a standard 35mm DIN rail. Ensure the rail is securely fastened within the modular-slot switchboard.
Connect the power supply and load to the screw terminals as per the wiring diagram provided on the device or in the detailed product documentation. The device supports multi-voltage input from 12V to 240V AC/DC.

Figure 1: Front view of the Lovato Electric TMM1 Multifunction Time Relay, showing the control knobs for time and function selection, and LED indicators. The screw terminals are visible at the top and bottom for electrical connections.
The TMM1 features multiple operating functions, selectable via the 'Functions' rotary knob on the front panel. Refer to the markings on the device for specific function modes (e.g., ON-delay, OFF-delay, Flasher, etc.).
The 'Time' rotary knob allows selection of the desired time range (e.g., 0.1s-1s, 1s-10s, 10s-100s, 1m-10m, 1h-10h, 1d-10d, 10d-100d). Once the range is selected, use the fine-tuning knob to set the precise time value within that range.
The Lovato Electric TMM1 is designed for long-term, reliable operation with minimal maintenance. Periodically inspect the screw terminals to ensure connections remain tight and free from corrosion. Keep the device clean and free from dust and debris. Do not use abrasive cleaners or solvents.
No user-serviceable parts are inside. Refer all servicing to qualified service personnel.
| Problem | Possible Cause | Solution |
|---|---|---|
| Device not powering on (Power LED off) | No power supply; Incorrect voltage; Loose wiring. | Check power source; Verify input voltage (12-240V AC/DC); Inspect and tighten wiring connections. |
| Relay not activating | Incorrect function selected; Time setting too long/short; Load wiring issue; Faulty load. | Verify function knob setting; Adjust time setting; Check load connections and continuity; Test the load independently. |
| Inconsistent timing | Unstable power supply; Environmental factors (extreme temperature). | Ensure stable power supply; Operate within specified temperature range. |
For specific warranty terms and conditions, please refer to the documentation provided with your purchase or contact Lovato Electric directly. Warranty coverage typically applies to manufacturing defects under normal operating conditions.
If you encounter issues not covered in the troubleshooting section or require further assistance, please contact Lovato Electric customer support or your authorized distributor. Have your product model number (TMM1) and purchase details ready when contacting support.
Note: Always refer to the official Lovato Electric website or product documentation for the most up-to-date information and support contacts.
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