TECHNOLOGY IN ACTION ADVERTORIAL
PCB Piezotronics Smart Vibration Switches offer Reliable Protection at Mechanical Switch Prices
P
CB Piezotronics, a world leader in vibration, acoustic, pressure, force and torque sensors has announced that its range of IMI Sensors electronic vibration switches meets the latest CTI (Cooling Technology Institute) vibration limits standards and offers reliable vibration protection at the low price of mechanical switches. Series 686 Smart vibration switches are fully user and field programmable via a USB interface and offer a low cost drop-in replacement for most popular mechanical vibration switches.
Smart
vibration switches feature an embedded piezoelectric accelerometer for superior accuracy and monitor vibration velocity for more consistent results leading to fewer false trips and more reliable measurement than can be provided by mechanical switches.
By meeting the new CTI vibration limits standards, Series 686 Smart vibration switches are ideal for use in air conditioning cooling tower fans and gearboxes to ensure equipment is effectively protected from excessive vibration should fault conditions arise.
Additional
applications include 24/7 machinery protection, fin fans, motors and pumps.
Product highlights include a solid-state relay for
ultra-reliable operation, two-wire operation for use with existing switch systems, Remote Reset AnywhereTM for safety and convenience, exclusive Magnetically Adjustable Vibration Threshold (MAVTTM) for setting alarm threshold automatically and hazardous area approved models available. Programmable delays can be used to eliminate false trips.
In addition to being more reliable than mechanical vibration switches, Series 686 Smart vibration switches provide a much lower cost solution for many electronic vibration switch applications where a single relay provides sufficient protection and/or an overall vibration output (typically 4-20mA) is not required. Multiple Smart vibration switches can be used in series or parallel to monitor several points or machines as necessary. They can also be used in conjunction with external SPST or DPDT relays to increase current capacity or when such relays are a requirement of the application.
SICK Safety-Certified Encoder
Protects Operators with Safe Motion Control S
ICK UK has announced the launch of the PLd / SIL2-certified DFS60S Pro incremental encoder,
enabling
motion to be safely controlled in automated guided vehicles or machinery requiring frequent operator interaction. The DFS60S Pro enables safe operator interaction at slow speeds without the need to stop the machine.
Especially when teamed with the Flexi Soft FX3-MOC Drive Monitor, the DFS60S Pro permits safe working without loss of productivity during routine operations, such as piece part loading, magazine replacement, adjustment on machining centres or
splicing of material on reel-fed machinery. Using a single DFS60S Pro, the rotating shaft speed is monitored and output to a safe motion monitor, providing data which can allow PLd / SIL2 safety for the equipment, PLe / SIL3 if two encoders are used.
“DFS60S Pro delivers easily-verified safety for controlled slow operations where production efficiency is key,” explains Darren Pratt, SICK (UK) encoder specialist. “Using non-certified encoders requires substantial investment in validation and verification of the safety function to ensure compliance with the Machinery Directive.
“The DFS60S can be fitted to rotating machinery and connected with any suitable safety drive monitor or retrofitted to equipment where the SICK Flexi Soft safety systems have been already installed to operate other safety sensors and switches.”
“The DFS60S Pro continually communicates shaft rotation but comes to the fore after a slow speed phase is signalled, for example when personnel are detected entering the designated safe zone. The drive monitor determines the shaft speed using the DFS60S Pro data, and monitors pre-configured motion characteristics until the appropriate clearance signal is received.
SICK u 01727 831121 /AUTOMATION u
www.sick.com
For applications where a full featured electronic
vibration switch is required including dual set points (relays), 4-20mA overall vibration output or the raw vibration signal output for performing vibration analysis, PCB Piezotronics offers the IMI Series 685B Electronic vibration switch. It offers lower cost and direct replacement (with optional adapter plate) for popular model 440, 450, 6140 and SW6000 switches.
PCB Piezotronics Ltd u 01462 429710 u
www.pcbpiezotronics.co.uk
A new generation of signal towers:
PATLITE introduces the LA6 with over 4.000 different colours.
ith a bit and a binary mode the new signal tower can create an almost endless variety of colours and signal patterns and thus enables visualization of a huge array of warning and signal pattern, for example sine curves, colours “jumping” across the signal unit or all modules lighting up in the same colour. New patent-pending special lenses provide for an even better visibility. Users can program the signal tower with special editing software that can be downloaded for free from the PATLITE website.
W Learn more at
www.patlite.com/la6/
PATLITE Europe GmbH u +49 (0) 811 9981 9770-0 u
www.patlite.eu
OCTOBER 2015 | AUTOMATION 43
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