Overhead cranes - ABUS - #23

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23 Moving on up. crane systems ABUS cross-type limit switches limit long travel and cross travel, automatically slowing or stopping the crane or the hoist at the end of the track. These limit switches may also be applied for crane zoning if it is necessary to divert a hoist on a crane around a prohibited area. The switch is operated by a switching lug installed on the crane track or on the crane bridge. The ABUS synchronization control system ensures that even minor differences in lifting speed caused for example by different loads on the hooks are evened out when several hoists with the same rated lifting speed are operated in parallel. In this way, differences in the levels of hooks with the same or different loads can be kept within defined limits. The ABUS synchronization control system is an electronic system which can be retrofitted cost-effectively to polechanging standard hoist motors without mechanical modifications or electronic switches. Load measurement systems LIS-SE: a universal load measurement and evaluation system that measures the voltage and current on all three phase conductors of the hoist motor. Optional functions: ‘Load display in the push button pendant’ and ‘load population recorder’. LIS-SV: This load indicator system offers all the functions of LIS-SE with load evaluation by load sensors in addition to motor current monitoring. This system is an attractive proposition for systems with several hoists where load summation or load limiting is required. This system increases measurement accuracy. The load can be indicated either on the display in the pendant control or on a large load display. GLZ large load display