LV relays interface with PLCs and other control circuits
Third Quarter 2004Other technologies
Access Control & Identity Management
The NK motor protection relays from NewElec's N Series are designed to protect motors in various LV applications. The relays are fitted with a 4 to 20 mA loop to indicate percentage motor load current as well as having four potential free normally-open contact outputs to indicate the fault status of the control panel-mounted LEDs. This enables interfacing to PLCs or other control circuits that may be situated in a separate control centre.
Protection is provided against thermal overloads, locked rotor, jam/running stall, and phase unbalance/loss conditions. The relays provide 250 mA earth leakage protection with a dedicated changeover contact as a shunt tripping facility for MCCBs, irrespective of the fault current level.
The NK relays have a PLC reset facility from 24-220 V a.c. or d.c. They also offer local and remote reset facilities, a thermal LED bar graph display and a fail-safe mode with memorised thermal status of the motor and trip fault conditions.
Emerson software optimises maintenance
Other technologies
Emerson has announced the Plantweb Insight Valve Health Application, a powerful software tool that combines Fisher control valve expertise with advanced analytic algorithms. The new app makes it possible for users to visualise an entire connected fleet of valves, while prioritising actions based on the health index of each valve.
Read more...Emerson software optimises maintenance
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Emerson has announced the Plantweb Insight Valve Health Application, a powerful software tool that combines Fisher control valve expertise with advanced analytic algorithms. The new app makes it possible for users to visualise an entire connected fleet of valves, while prioritising actions based on the health index of each valve.
Read more...R200 part saves recycler millions igus
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A simple switch to a polymer bearing, in place of stainless steel, has saved lead acid battery recycler, Frys Metals, tens of thousands of rands in maintenance costs, and much more in preventing lost production time.
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One of the most common causes of thermal failure in hydraulic fluids and some lubricating oils relates to aeration.
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Superior lubrication slashes electricity consumption, reduces vibration, and increases protection through dramatically lower friction.
Read more...Approaches to wire rope lubrication
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The approaches to wire rope lubrication have shifted in recent years, largely due to important technological advances to improve the application and performance of lubrication products for wire ropes. Locally, Lubrication Engineers has been at the forefront of these advancements.
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Editor's Choice Access Control & Identity Management Information Security AI & Data Analytics
What does 2024 have in store for the access and identity industry? SMART Security Solutions asked several industry players for their brief thoughts on what they expect this year.
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Information Security Access Control & Identity Management
As the security landscape continues to evolve, organisations must fortify their security solutions to embrace the changing needs of the security and technology industries. Nowhere is this more present than with regard to cybersecurity.
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