AC Drive Weight Measurement System

Weight Measurement II

Calculates a load weight based on motor torque
Provides an alternative to a load cell (where absolute precision isn’t needed)
Continuously takes measurements while lifting without pausing
Detects hoist overload - configurable warning and fault points can be set
Displays weight on a score board, PLC or radio remote control screen via analog signal
Easily enabled or disabled via a digital input

Load Summing

Configures each hoist as a percentage of total crane capacity
Each drive inputs the load sum from the previous drives, adds its own measured weight, and then passes the total to the next drive via an analog output. Any drive in the system will fault if the total is above the set threshold.
Communicates between hoists via analog I/O
Displays a summed weight on a score board, PLC or radio remote control screen via analog signal
Can accept an analog input from an actual load cell

Benefits

Offers increased safety by preventing a lift from overloading the crane system
Prevents wear and tear on equipment
Prevents damage to the crane structure
Saves time and money by eliminating the need for a PLC or additional hardware

*Consult factory about retrofitting onto existing equipment.

Weight Measurement System Overview

Weight Measurement System (WMS) combines the functions of Load Summing and Weight Measurements II in a convenient, single customer software. WMS can be used across multiple hoists without the need for a PLC and detects overloads on individual or multiple hoists

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