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| Evolved from Sprint Electrics
PLX series of DC drives, the PLA is packed with many features and
functions that are often required by engineers in producing solutions
for diverse applications and motion tasks. The PLA offers a means
of interconnecting analogue and digital signals via its range of configurable
inputs and outputs to the internal application blocks, enabling the
user to define a control strategy to exactly meet the demands of the
process or application. The block diagram created is extremely flexible
and has a unique "Configuration Checker" detecting shorts within the
user defined connections. The standard blocks in the PLA include |
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Diameter Calculator. | |
Motorised pot simulator with power loss memory. | ||||||
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Taper tension calculator. | |
2 high performance PID's with gain profiling. | ||||||
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Torque compensation for inertia and friction. | |
2 Summers with inverting scaling clamping and hysterisis. | ||||||
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Latch with Set, Reset, Clock and Data inputs. | |
2 Filters with precision time constants from milliseconds to 30 secs. | ||||||
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Batch Counter with roll-over facility. | |
Delay timer with roll over facility. | ||||||
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4 change over switches. | |
Linear or 'S' ramp with independent up down rates for Forward and Reverse. | ||||||
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3 input digital decoder with 8 programmable output values. | |
4 comparators with programmable hysterisis and aperture option. | ||||||
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4 Quadrant parameter profiler with Linear, square, cubic or 4th power profiling laws. | |
8 Multifunction blocks with AND, OR, INVERT, SIGN CHANGE, RECTIFY, COMPARE. | ||||||
All the above 'precision instruments' can be programmed and interconnected with each other and/or the extensive input/output facilities in the PLA. Making connections between blocks, parameters and I/O is very easy using the PLA's GOTO and GETFROM tools with all source and target parameters described in full English or selectable other languages. Accidental user programmed short circuit connections are automatically flagged by the built in 'Conflict Checker'. Comprehensive input output facilities. |
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8 bipolar analogue inputs with programmable range, scalers, offset and clamps. | |
8 digital inputs with adjustable comparator threshold. | ||||||
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3 analogue outputs with programmable scaler, rectifier and offset. | |
4 Digital inputs that can also be used as encoder inputs up to 100KHz. | ||||||
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4 Digital input/outputs with programmable logic threshold and selectable invert. | |
3 Digital outputs with programmable logic threshold and selectable invert. | ||||||
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All digital outputs have an output capability up to 350mA short circuit protected. | |
A high voltage input suitable for tachogenerators or other sources up to +/-200V. | ||||||
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An isolated bipolar input suitable for voltages up to +/-1000V DC. | |
An isolated input suitable for measuring AC voltages up to 690V AC. | ||||||
All of the above inputs can be programmed and monitored in engineering units using the superb diagnostic facilities available within the PLA. The PLA is powered from a 24Vdc supply as standard. There is a 40-character alphanumeric backlit display with a menu structure that has been designed for ease of use. Rapid access to the English 'parameter set' is made simple via 4 ergonomically designed keys. Packaged in a similar style to the PLX dc drives, the PLA measures 289H x 216W x 110D mm. Also included free with the PLA is Sprint Electrics 'PL PILOT' configuration and monitoring software complete with PC to PLA programming lead. As a "Windows" based package 'PL PILOT' requires no previous knowledge of any programming language, making even the most demanding of applications quick and easy to set-up. Monitoring is also made easy using only the PLA or PL Pilot, with the ability to view on-line the voltage present and state of all the analogue and digital inputs and outputs. Signals can also be analysed further using the scope facility that can be configured to operate through analogue output 3 of the PLA; thus any parameter viewed on the alphanumeric display of the PLA can also be monitored using an oscilloscope across this output. PL Pilot also enables the user to save entire application configurations to disk or to save just the configuration of an individual block (i.e. the PID settings), these can then form the basis of a library that the user can call upon for other applications. The user can also save up to 3 complete PLA configurations within the unit. An RS232 port provides an essential programming port but also enables the PLA to communicate to remote equipment such as other PLA's, Drives, operator interfaces and other devices. Further connectivity can be achieved for the more demanding applications by the addition of a Profibus card. |
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 Product
manual
- For full list of all Sprint Electric product
manuals click
here. Product Range Brochures |
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