4. A2B System: Includes transmitters and receivers that prevent the hook block from hitting
the boom, signaling the operator with alarms and locking out certain functions if
necessary.
Hirschmann DS85 Key Theories
The manual includes detailed explanations on the theories of angle, length, and pressure
measurement:
- Angle Theory: The angle sensor operates through a potentiometer driven by a weighted
pendulum, transmitting data digitally via the CAN-bus.
- Length Theory: Length is tracked by a sensor connected to the cable reel; the manual
describes steps for ensuring accuracy, including pretensioning and calibration.
- Pressure Theory: Dual transducers on the piston and rod side of the lift cylinder convert
hydraulic pressure into electrical signals for load calculations.
Troubleshooting and Error Codes
The manual lists error codes and troubleshooting steps for common issues with the DS85
system. For example:
- Angle Display Issues: If the displayed angle doesn’t match the actual angle, the angle
sensor or CAN-bus converter board may need replacement.
- Load Display Discrepancies: A mismatch between displayed and actual load can result
from incorrect sensor calibration or faulty pressure transducers.
- A2B System Failures: If the A2B system is malfunctioning, the manual outlines
procedures to check power supply, sensor connectivity, and battery status for wireless
components.
DS85 Calibration and Maintenance
Regular maintenance and calibration are essential for optimal performance of the DS85
LMI system. The manual includes instructions for:
- Sensor Calibration: Guides on zero-setting the transducer inputs and recalibrating length
and angle sensors.
- Cable Replacement: Detailed procedures for replacing the cable reel and length sensor,
emphasizing the importance of tension and alignment.
- Battery Replacement for Wireless A2B Transmitters: Provides steps to ensure reliable
performance of the A2B system’s wireless sensors.
DS85 Safety and Operational Tips
The DS85 LMI system is an aid rather than a substitute for safe crane operation practices.
Operators are reminded to perform pre-operation inspections and to follow the proper
setup procedures. Accurate system readings depend on correct calibration and daily
checks. The manual stresses that crane operators remain responsible for safe crane
operation, as the LMI system only assists in warning of potential hazards.
To Next Page
Loading...
