Product category:
PCs, PLCs, HMIs, control systems, products
News Release from: Sprint Electric | Subject: PLA module
Edited by the Manufacturingtalk Editorial
Team on 19 March 2008
PLA module replaces PLC or PC based
systems
A 'stand alone' PLA module with extended functionalities can compliment and enhance any analogue or digital drives system and reduce or eliminate the need for PLC or PC based systems.
Sprint Electric offers a Programmable Logic Arithmetic (PLA) unit with extended functionalities for diverse applications and motion tasks The PLA is a stand-alone applications module that can compliment and enhance any analogue or digital drives system, simplify system design and reduce or eliminate the need for PLC or PC based systems
This article was originally published on Manufacturingtalk on 27 Jun 2008 at 8.00am (UK)
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Designed primarily for use by system integrators, the PLA offers a powerful and flexible method of processing analogue and digital signals via easy to use configurable software blocks.
Via its range of configurable inputs and outputs to the internal application blocks, the PLA enables the user to define a control strategy to exactly meet the demands of the process or application.
The block diagram created is flexible and has a novel 'Configuration Checker' detecting shorts within the user-defined connections.
Further reading
Regenerative four quadrant DC drives save energy
Compact regenerative four quadrant DC drives are designed to regenerate energy under braking without using complex intermediate storage, resistive dumping or additional power bridges.
Versatile motor controllers mount on DIN rail
Versatile motor controllers are designed for permanent magnet or shunt wound DC motors in a compact DIN rail mounting package mountable adjacent to other control panel components.
Digital DC drives are easy to program
The functionality and compact design of digital DC drives offer a powerful, flexible and easy to program units without requiring costly external hardware.
The standard application blocks in the PLA include the following.
* Diameter calculator.
* Taper tension calculator.
* Torque compensation for inertia and friction.
* Motorised pot simulator with power loss memory.
* Two high performance PIDs with gain profiling.
* Two summers with inverting scaling clamping and hysterisis.
* Two filters with precision time constants from millisec to 30s.
* Delay timer with roll-over facility.
* Linear or 'S' ramp with independent up-down rates for forward and reverse.
* Four comparators with programmable hysterisis and aperture option.
* Eight multifunction blocks, and many more.
All the facilities can be programmed and interconnected with each other and/or the extensive 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 110mm.
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 by the addition of further field bus communication cards including Profibus and DeviceNet.
* About Sprint Electric - Sprint Electric Limited, based in Arundel, West Sussex, UK was founded in 1987.
The company offers a wide range of DC motor control, with over fifty models covering both single phase and three phase, regenerative and non-regenerative applications.
From low voltage servo performance controller to highly sophisticated fully digital three phase DC variable speed drive of many hundreds of amps, Sprint Electric products meet the demands of countless industrial applications around the globe.
Sprint Electric is committed to providing innovative products backed up by a high level of customer service to the world-wide industrial market.
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