PLA unit suits analogue or digital drives
A
Sprint Electric product story
Edited by the Engineeringtalk editorial team
Mar 17, 2008
The PLA includes Sprint Electrics PL Pilot configuration and monitoring software complete with PC to PLA programming lead.
Sprint Electric has released a programmable logic arithmetic unit (PLA) designed to complement any analogue or digital drives system, simplify system design and reduce or eliminate the need for PLC or PC-based systems.
Designed primarily for use by system integrators, the PLA offers a flexible method of processing analogue and digital signals via easy to use configurable software blocks.
Its range of configurable inputs and outputs to the internal application blocks enables the user to define a control strategy to exactly meet the demands of the process or application.
The block diagram created has a configuration checker, detecting shorts within the user-defined connections.
The standard application blocks in the PLA include a diameter calculator, a taper tension calculator, torque compensation for inertia and friction and a motorised pot simulator with power loss memory.
It also offers two high-performance PIDs with gain profiling, two summers with inverting scaling clamping and hysterisis and two filters with precision time constants from milliseconds to 30 seconds.
It also offesr a delay timer with a roll-over facility, a linear or S ramp with independent up-down rates for forward and reverse, four comparators with programmable hysterisis and aperture options, and eight multifunction blocks, All the facilities can be programmed and interconnected with each other and/or the input/output facilities in the PLA.
All source and target parameters are described in English or selectable other languages.
Additional input/output facilities can be programmed and monitored in engineering units using the diagnostic facilities available within the PLA.
The PLA measures 289 x 216 x 110 mm.
The module includes Sprint Electrics PL Pilot configuration and monitoring software complete with PC to PLA programming lead.
As a Windows-based package, the software requires no previous knowledge of any programming language.
An RS232 port enables the PLA to communicate to remote equipment such as other PLAs, drives, operator interfaces and other devices.
Further connectivity can be achieved for the more demanding applications with the addition of further field bus communication cards, including Profibus and DeviceNet.
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