Views: 3 Author: Site Editor Publish Time: 2026-08-06 Origin: Site
Q1: What is the SZ-E02 Excavator Safe Load Limiter?
A: The SZ-E02 is an advanced Load Moment Indicator (LMI) system designed specifically for hydraulic excavators. It continuously measures the actual load, boom and arm angles, working height, and radius, comparing live values against safe operating limits to prevent tipping and structural overload.
Q2: Why is a Safe Load Limiter essential for excavator operations?
A: Standard excavators lack built-in dynamic weighing systems during lifting operations. The SZ-E02 prevents rollovers by warning operators before reaching unstable load-moment conditions, protects machinery from structural strain and hydraulic overload, ensures compliance with job site safety standards, and provides real-time load feedback on a cab display.
Q3: What are the main components of the SZ-E02 system?
A: The SZ-E02 features a modular design consisting of four primary components:
Arm Angle Sensors: Mounted on the boom and arm to measure dynamic geometry and working radius.
Pressure Sensors: Installed on hydraulic cylinder lines to measure dynamic lifting load.
Display Indicator (Microcomputer Host): A 4.3-inch cab screen with signal processing, monitor controls, and visual display.
Signal Cables & Control Circuits: Connect sensors to the host and integration relays for overload lockout actions.
Q4: How does the alarm and automatic lockout function work?
A: The SZ-E02 features a 3-stage visual, audible, and active control safety mechanism:
At 90% Rated Load: Triggers a clear sound and amber light warning to alert the operator.
At 100% Rated Load: Triggers an urgent sound and red light alarm. The alarm continues until load drops below 100%.
At 110% Rated Load: Sends an immediate overload control signal to the hydraulic control circuit, automatically locking out dangerous movements (such as lifting up or increasing working radius) while allowing safe movements (such as lowering or retracting).
Q5: What real-time data is displayed on the screen?
A: The 4.3-inch display provides operators with key operational metrics, including current load weight and weight threshold, boom and arm angles, working radius, lifting height, system status bar, scale bar, and visual signal/mute controls.
Q6: What are the key technical specifications of the SZ-E02?
A: The SZ-E02 model features a 4.3-inch display with a system error/accuracy of ±5% (F.S.). It operates on a voltage range of DC 12V–36V (standard DC24V ±5%) and functions in working temperatures from -20°C to +70°C. It carries an IP65 protection rating (weatherproof and dustproof), has a measuring range of 15t–85t (customizable up to 300t), and features a relay contact capacity of DC24V 5A.
Q7: Does the SZ-E02 record historical overload events?
A: Yes. The SZ-E02 host includes built-in memory that automatically stores overload historical logs for up to two weeks, providing site management with actionable data for safety audits, accident investigation, and operator training.
