
Engineered for the safety of construction machinery lifting operations, the Hirschmann LMI Load Moment Indicator serves as the core safety component for mobile cranes, all-terrain cranes, and similar equipment.
| Feature Module | Detailed Description |
| Real-Time Safety Monitoring | Synchronously collects data from boom angle sensors, length sensors, telescopic ratio sensors, and load cells to dynamically calculate the current load moment. |
| Multi-Level Alarm Protection | Activates a primary alert when the load reaches 90% of the rated capacity, and a secondary alert with forced circuit cutoff for dangerous actions when the load exceeds 105%. |
| Black Box Data Logging | Built-in storage records up to 1,000 hours of operational data, including alert and alarm events. Data can be exported via USB for incident analysis and compliance audits. |
| Multi-Working Condition Adaptation | Supports main/auxiliary hook operations, luffing, telescoping, and other working modes. Custom safety load curves can be preset for different boom lengths and angles. |
| Explosion-Proof & Rugged Design | Die-cast aluminum housing with IP66 protection rating, designed to withstand harsh outdoor conditions including high temperatures, humidity, and dust. |
| Parameter Category | Details |
| System Version | WIKA SYS-C2a V3.30 |
| Input Signals | Angle sensor (0-5V/4-20mA), length sensor (pulse/analog), load sensor (mV/V) |
| Output Interfaces | 2 relay outputs (warning/alarm), RS485 communication port (supports CANbus protocol) |
| Power Supply | DC 24V (±10%) |
| Operating Temperature | -40°C ~ +85°C |
| Protection Rating | IP66 (housing) / IP67 (connectors) |
| Mounting Type | Flush-mount / Wall-mount |
| Housing Material | Die-cast aluminum (powder-coated finish) |