PRODUCTS & EQUIPMENT
service life and comply with all - including industry-specific – system requirements.
Many safety functions In addition to the standard Safe Torque Off (STO) function, the optional safety function module of the Dedrive Pro 880 inverter supports further standard- compliant functions such as Safe Stop (SS1), Safe Brake Control (SBC), Safe Limited Speed (SLS) and Safe Maxi- mum Speed (SMS). Owing to the built-in safe-control system, crane designer engineers do not need to add this system as a extra component, thus reducing complexity, simplifying the control architecture and cutting costs.
Synchronous control and master/follower operation Several Dedrive Pro 880 inverters in master/slave mode can implement synchronous control of up to four hoist units, enabling precise handling, even of highly sensitive loads. This func- tion is also programmed into the application program of the inverter as is the master/follower operation with torque tracker in Drive-to-Drive (D2D) mode. No additional hardware is need- ed. The torque tracker ensures that torque is shared between two
mechanically connected geared motors.
A ‘communicative’ drive Thanks to many interfaces, the Dedrive Pro 880 is network-enabled and extremely ‘commu- nicative’. It features digital and analogue I/O extensions and interfaces for signal evaluation of different pulse generators. It can also be equipped with communication modules for vari- ous standards such as PROFIBUS DP, Ethernet/IP, Modbus TCP, PROFINET IO and – for use
of the safety function module – PROFIsafe.
Remote diagnosis
Another inverter module is fitted with an integrated web server for remote access to the in- verter data. The user can access the website of this module via a 3G modem or with stand- ard PC, tablet and smartphone. The module can also record process and drive data, which are saved internally or transferred to a database. The remote diagnosis module also
issues warning and fault messages, thus allowing for timely preventive maintenance measures to ensure higher crane availability.
Fast commissioning
Thanks to the many crane-specific configuration options in the application program, crane design engineers can dispense largely with costly programming and still implement sophisti- cated functions tailored exactly to the requirements of materials handling and crane opera- tion.
International Metal Tube
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IMT September 2016
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