Connect the sensors, alarms, power supply, and disabling signal. Programming & Calibration
Solution : The elevator car becomes lighter at the top of the shaft for 2:1 roping without compensation chains. The LM3D display should always show a positive value; if a negative appears, the zero-calibration procedure must be repeated at the correct lightest position in the shaft.
The device utilizes a simple faceplate design engineered for high-stress machine room environments. It features an LED display showing real-time weight or code updates alongside four primary operational buttons:
: Set thresholds for the three alarm relays based on the desired weight limits or number of passengers. Common Error Codes : No saved data; settings must be redone. : Overload; the detected load exceeds 9999 Kg. : Power supply is too low. micelect lm3d manual
: Requires a disabling/blocking voltage (24-220V AC/DC) during travel to freeze weight values and ensure accuracy. Installation & Programming Guide
: Works with any load weighing sensor manufactured by MICELECT .
: Hold for 3 seconds to enter programming mode. Press to cycle menus and save parameters. Connect the sensors, alarms, power supply, and disabling
The disabling or blocking signal requires a continuous 24V to 220V AC/DC charge while the elevator is in flight. This signal freezes the display value during travel. It tells the software to actively ignore velocity fluctuations and kinetic spikes caused by compensating chains. Tie this input directly to a door micro-switch contact or a dedicated run-state relay inside the primary elevator controller. Step-by-Step Programming Procedure
Stable performance from -10ºC to 50ºC . Functional Options
, and serves as a critical safety component by monitoring and communicating cabin load status. Key Technical Specifications The device utilizes a simple faceplate design engineered
Solution : This is often caused by mechanical binding. Jump inside the cabin a few times to free up the "hooks" on the guide rails before performing a new "TARE".
The LM3D functions by processing analog signals from strain-gauge transductive sensors into data used to trigger onboard controller relays. It provides compatibility with every load sensor family designed by Micelect S.L. , allowing applications ranging from under-cab load cells to wire rope tension clamps. Technical Parameters Overview Parameter Group Operational Value / Range 24V DC / 110V AC / 230V AC ( , model specific) Disabling/Blocking Signal Input 24V to 230V AC/DC optocoupled loop Relay Contact Rating 250V AC, 3A maximum inductive/resistive load Operating Temperature Envelope -10∘Cnegative 10 raised to the composed with power C +50∘Cpositive 50 raised to the composed with power C 14∘F14 raised to the composed with power F 122∘F122 raised to the composed with power F Enclosure Variants Standard 35mm DIN Rail Mount or IP-65 Rated Junction Box Analog Output Modules (Optional) 0–20 mA, 4–20 mA, 0–10V DC, Terminal Interconnections and Wiring
Disclaimer: This report is a synthesis of general operational knowledge regarding the Micelect LM3D series. Specific software versions may have slightly different menu structures. Consult the physical manual provided with the device for specific error codes or wiring diagrams.
Note: Never shorten the factory-calibrated 14-foot sensor connection cable, as its specific internal resistance dictates factory calibration settings. 2. Disabling Input / Blocking Terminal
This comprehensive technical guide serves as an operational reference manual, covering the device's technical specifications, terminal connections, menu programming, calibration sequences, and critical troubleshooting frameworks. 1. Technical Specifications and Hardware Overview