Helping you #Make Sense of Sensors
FIND OUT MORE - HERE ARE SOME SUGGESTIONS:
PROUD TO BE A MEMBER AND SUPPORTER OF:
APPLICATION - COUNTING SHRINK-WRAPPED CARTONS
During high-volume packaging operations, conveyors deliver stacked cartons to shrink-wrapping stations. At each station, a wrapping machine encloses a stack in heat-shrink film and an infrared oven shrinks the film to form a sealed pack of cartons. A long-distance through-beam photoelectric sensor, mounted beside the conveyor, senses the presence of each pack as it leaves the oven and signals a plant-wide control system to increment the production throughput totals. CUSTOMER APPLICATION In factories producing fast-moving consumer goods, automated packaging operations are the norm. Confectionery products are no exception; in high-volume production, manufacturers pack sealed bags of candy in cardboard cartons, which are in turn stacked for shrink- wrapping and palletization. Packed cartons arrive for shrink-wrapping in uniform stacks. A wrapping machine encloses each stack in a tube of heavy-duty heat- shrink film; the stack then passes through an infrared oven, where the film shrinks, forming a sealed pack of cartons. After heat-shrinking, packs are conveyed to the consolidation area for palletization. Factory operators need to monitor production throughput for each packaging line. Manual counting methods are impractical and expensive. A highly reliable non-contact sensor system is needed to detect the presence of each pack as it leaves the shrink-wrapping area and to update the item count held on a plant-wide control system. Long-distance operation is desirable, as not all packaging lines are easily accessible markings as cartons leave the printer-applicator, rejecting any defective cartons.
At busy container seaports, purpose-designed container-handling vehicles called Straddle Carriers, operate around the clock, loading, unloading and stacking containers. Space utilisation is increasingly important and correctly identifying the size of container picked for each lift is essential for efficiency. Contrinex photoelectric sensors have been fitted to the Straddle Carriers to detect the container size and eliminate the need for drivers to carry out identification checks, saving time and avoiding errors. CUSTOMER APPLICATION A fleet of straddle carriers, purpose-designed container-handling vehicles, services a busy French container port. As a straddle carrier moves over a container, a central lifting beam lowers and locks onto the corner castings of the container; each lift comprises either a single 40-foot container or two 20-foot containers. Optimal utilisation of storage space is essential; correctly identifying the size of container picked for each lift is vital. Fitting carriers with sensors that detect the size and type of containers at the time of lifting eliminate the need for drivers to carry out identification checks, saving time and avoiding errors. The original mechanical sensors proved unreliable, losing calibration when subjected to continuous vibration during normal operation. Although the scheduled maintenance interval for each vehicle is 1,000 hours, mechanical sensors required recalibration at intervals of no more than two or three days. A highly stable replacement sensor system was required.
Customer Solution Highly stable, non-contact, all-electronic units from the Contrinex range of photoelectric sensors provide a reliable and cost-effective alternative. The moulded-resin sensor casings, fitted with coated- plastic sensing faces, are IP67 rated, making them virtually impervious to the harsh, salt-laden environment of a busy container port. Connection to the vehicle’s control systems is via an integral M12 connector and PVC-sheathed cable, allowing easy removal and replacement during routine maintenance. To confirm the size of the container, two pairs of diffuse sensors with background suppression are mounted centrally on each lifting beam. As the lifting beam descends, one sensor from each pair detects the presence or absence of corner castings at the central lifting points, while the other detects the presence or absence of the gap between two 20-foot containers. The combination of the two eliminates incorrect identification in the unlikely event that the first sensor returns a false- positive signal from a 40-foot container. A physically small housing and long sensing distances eliminate the risk of accidental damage arising from a mechanical collision, while rugged industry-standard housings and vacuum-encapsulated electronics minimize the effects of vibration. Operational results have been excellent; the new Contrinex sensors have eliminated calibration errors and reduced maintenance costs significantly.
APPLICATION - STRADDLE CARRIER TRUCK
+
CUSTOMER VALUES • Non-contact, all-electronic device with sensing range up to 500mm. • Large sensing range available in a physically small sensor. • Exceptional resistance to extreme vibration during operation. • Optimal space utilisation with little or no reliance on operator involvement
+
PRODUCT ADVANTAGES • Elimination of calibration errors during normal operation • Large sensing range available in physically small sensor • Provides reliable, repeatable sensing in demanding operating conditions
STANDARD PHOTOELECTRIC SENSORS Positioning and presence-detection photoelectric sensors which are used in almost any industry with machines that have moving parts. Industry leading sensing distances and outstanding background suppression characteristics, give very high accuracy and reliability. CLICK HERE to view the vast selection of photoelectric sensors on Contrinex’s website, or call us to help guide you through selection, or answer your questions. Below are links to additional information and application stories.
APPLICATION - CONFECTIONERY BOX OVERFILL CHECK
During secondary packaging of bags of confectionery, manufacturers arrange bags in overlapping layers. Multi-axis pick-and-place packing robots align and pack layers of bags in preformed cardboard cartons. The filled cartons are conveyed to case-sealing stations. A highly reliable photoelectric sensor, mounted directly above the conveyor, senses the height of the top layer of bags in each carton before sealing and rejects insufficiently filled cartons CUSTOMER APPLICATION In the food processing industry, shingling, or overlapped layering, is a common technique for optimising space utilisation during secondary packaging operations. Confectionery, sealed in gusseted bags with predominantly triangular profiles, is packed in alternating, overlapping layers in preformed cardboard cartons. Once each carton is full, it passes to a case-sealing station prior to palletization and dispatch. Pre-aligned bags of confectionery arrive at the packing station in regularly spaced rows. At each station, a multi-axis pick-and-place packing robot lifts a row of bags, aligns it and lowers it into a preformed carton. Successive layers overlap each other, ensuring that space within the carton is fully utilised. Once the predetermined number of layers has been packed, the carton is conveyed to the sealing station. From time to time, one or more incorrectly formed layers occur. Individual bags may be missing from a row on arrival at the packing station, or may be damaged or misaligned. A non-contact sensor is needed to sense the height of the top layer of bags, rejecting any defective cartons. It must be reliable and require minimal maintenance.
During the production of individually packaged cheese portions, conveyors deliver product to packaging stations. In-line buffering stations regulate flow to match packaging throughput; miniature Ecolab-certified sensors detect the presence of each portion after buffering, triggering the packaging cycle. Sensitivity parameters for each portion size, stored on the sensor’s inbuilt memory, may be updated remotely without manual intervention, eliminating the need for unplanned sanitization between batches. CUSTOMER APPLICATION A Swiss manufacturer of premium dairy products produces a range of individually packaged cheese portions in a high-volume hygienic production facility. Once cut to size, cheese portions travel on a food- grade conveyor to a packaging station; the duration of the packaging cycle is dependent on the type of cheese and the portion size. Prior to packaging, a buffering station produces a regular flow of portions with a predetermined spacing to suit the packaging throughput. The two operations must be synchronized; the manufacturer requires a sensor system that detects the presence of each cheese portion as it leaves the buffering station, triggering the packaging cycle. Sensors must be food-grade certified and withstand the aggressive cleaning agents used during washdown routines. They must also accommodate the full range of portion sizes without the need for manual adjustment, as this would necessitate sanitization each time the portion size changes. Maximising throughput is an additional priority; rapid changeover between product batches is essential.
Customer Solution Ecolab-certified, diffuse-mode photoelectric sensors with background suppression from the Contrinex C23 product family are ideally suited to this application. These miniature cubic devices, mounted above product conveyors immediately after each buffering station, detect the presence of cheese portions as they pass underneath. Positioning sensors is simple thanks to a range of adjustable stainless steel mounting brackets. An industry-standard PNP normally open output with an M8 connector ensures optimum flexibility. Additionally, IO-Link, a standardized point- to-point serial connection protocol for sensors and actuators, is enabled on PNP versions at no additional cost, offering the advantages of digital communication without the need for special cabling. A second output provides a stability alarm in the event of reduced sensitivity, flagging the need for preventative maintenance before any performance degradation occurs. Robust sensor construction, featuring miniature (20mm x 30mm x 10mm) plastic housings, ensures reliable operation in the demanding washdown environment; Contrinex C23 devices are rated to IP67. An operating range between 15mm and 250mm, adjustable via a teach button or via IO-Link, accommodates the range of portion sizes without compromise. A brief one- or two-step teach procedure simplifies initial set-up. One- button operation allows process engineers to teach the target object and, optionally, the background, each time a new portion size is introduced. Once taught, sensitivity parameters are stored on the sensor’s inbuilt memory and may be retrieved or updated remotely via IO-Link, eliminating the need for manual adjustment. These rugged miniature sensors meet the customer’s need for reliable operation with little or no manual intervention, while unplanned sanitization is avoided. The solution is highly cost-effective with minimal non-productive time; throughput is maintained at or above target levels.
APPLICATION - TRAM PANTAGRAPH DETECTION
When a tram reaches a road junction, wire-switches, installed on the overhead conductor cables, control its direction of travel, with switches in either the default “straight-through” or “turnout” positions. As the tram passes a switch in the turnout position, Contrinex photoelectric sensors mounted on the overhead cables detect the presence of the pantograph current collector so that the control system can then reset the switch to the default position. CUSTOMER APPLICATION In urban tram transportation systems, wire-switches installed on the overhead conductor cables at road junctions, control the direction of travel for the trams. The switches default to the straight-through position so that when a bus approaches a turn, the driver uses a remote trigger to change the switch to the turnout position. After the bus completes the turn, the switch reverts to the straight-through position. If a triggered switch reverts to the straight-through position prematurely, the pantagraph current collector may become disengaged, damaging the switch. Therefore tram operators install safety systems to prevent premature switching. Typically, these utilise timer circuits and a predetermined delay or mechanical sensors that rely on physical contact with the current collector, but neither system is reliable. A Swiss manufacturer of trolley-bus control systems requires a highly reliable, rugged sensor system that will detect the presence of a current collector as it passes a switch. The system must operate with minimal maintenance and withstand the varied weather conditions of an outdoor environment in Switzerland and therefore they selected Contrinex sensors .
Customer Solution Contrinex’s C23 through-beam photoelectric sensors offer high- performance, small size and high-stability. A purpose-designed metal bracket, mounted above the conductor cable, holds the transmitter and receiver units in alignment on either side of the cable. As the pantagraph current collector passes between the two units it breaks the beam, triggering the sensor and returning the switch to the straight-through position. The C23 photoelectric sensors are virtually impervious to the harsh, outdoor environment and their small physically size (30 x 30 x 15mm) eliminates the risk of accidental damage arising from a mechanical collision. The rugged construction and vacuum-encapsulated electronics within the sensor minimise the effects of vibration, ensuring a long service life. Each unit is connected to the trolley-bus control systems via a PVC- sheathed cable with a hermetically sealed entry. The receiver has an industry-standard PNP dark-on interface. The one-piece mounting bracket allows easy removal and replacement of the complete assembly during routine maintenance. Operational results have been excellent and the Contrinex sensors have proved highly reliable, eliminating switching errors and reducing maintenance costs significantly.
+
CUSTOMER VALUES • Exceptional reliability in a harsh outdoor environment • Automatic operation with optimal space utilisation • Elimination of switching errors during year- round operation • Significantly reduced maintenance costs
+
PRODUCT ADVANTAGES • All-electronic device with sensing range up to 12,000 mm • Large sensing range available in physically small sensor • Exceptional resistance to vibration during operation
APPLICATION - DETECTING CHEESE ON A FOOD CONVEYOR
Customer Solution A miniature through-beam photoelectric sensors from the Contrinex C23 range are ideal for this application. These dual-unit sensors, available with an optional alignment aid, have a maximum sensing range of 30,000mm. Each sensor comprises a separate transmitter and receiver, each mounted in a 20mm x 30mm x 10mm miniature plastic housing; connection to the control system is via a PVC-sheathed cable with the choice of an integral M12 connector or a hermetically sealed entry. Immediately after each oven, a sensor is mounted with the transmitter and receiver on opposite sides of the conveyor. Depending on the space available around the oven, either unit may be located some distance away from the track. The integral alignment aid ensures rapid, accurate set-up, even at extremes of operating range, while custom- designed mounting brackets allow optimal sensor positioning in almost any situation. As each carton breaks the light beam, the sensor detects its presence and signals the control system to increment the item count. Industry- standard PNP or NPN 3-wire or 4-wire outputs support direct interfacing with modern industrial controls. A second output provides a stability alarm in the event of reduced sensitivity, flagging the need for preventative maintenance before any performance degradation occurs. The C23 range detects fast-moving targets reliably; remote selection of switching frequency is possible via IO-Link, a standardized point-to- point serial connection protocol, available as standard at no extra cost for PNP versions.
+
CUSTOMER VALUES • Reliable long-range item counting on a non- contact basis Improved data accuracy arising from real-time, error-free pack detection • Increased productivity as stability alarm flags preventative-maintenance needs • Single sensor accommodates a range of carton sizes without repositioning
+
PRODUCT ADVANTAGES • Maximum sensing range of 30,000mm with integral alignment aid • IO-Link connectivity available at no extra cost on PNP versions • Dual output with stability alarm • Versatile, purpose-designed mounting brackets for ease of installation
+
CUSTOMER VALUES • Ecolab-certified sensors are ideal for hygienic production facilities • Wide operating range accommodates full range of portion sizes • Sensitivity parameters are retrieved or updated remotely via IO-Link • Unnecessary sanitization between batches is avoided • Simple one- or two-step teach procedure optimizes initial sensor set-up • Stability alarm highlights reduced sensitivity, avoiding unplanned stoppages • Downtime is avoided by eliminating the need for technicians to attend machines
+
PRODUCT ADVANTAGES • Ecolab-certified photoelectric sensors with background-suppression mode • IO-Link serial-connection protocol enabled on PNP versions at no additional cost • Pre-taught sensitivity parameters stored on inbuilt sensor memory • Remote sensitivity retrieval or update via IO- Link • Robust sensors with miniature (20mm x 30mm x 10mm) plastic housings
Customer Solution Rugged photoelectric sensors with background suppression from the Contrinex C23 range are ideal for this application. A pinpoint red LED with a 10mm-diameter light spot at the maximum sensing range of 300mm ensures highly reliable detection of objects of almost any colour against light or dark backgrounds. These sensors are well suited to both the task and the environment. Immediately after packing, a single sensor is mounted centrally above the conveyor. As each carton passes below on its way to the sealing station, the sensor detects the top surface of the packed bags. If the height of the top layer falls outside preset limits, the sensor triggers a reject mechanism that diverts the carton to a holding area for investigation. Mounted in 20mm x 30mm x 10mm miniature plastic housings, C23 photoelectric sensors are available with industry-standard PNP or NPN 3-wire or 4-wire output. Connection to the customer’s control system is via a PVC-sheathed cable with the choice of an integral M12 connector or a hermetically sealed entry. A second output provides a stability alarm in the event of reduced sensitivity, flagging the need for preventative maintenance before any performance degradation occurs. Locating sensors optimally is simple thanks to a custom-designed range of multi-position mounting brackets. An operating range between 15mm and 250mm accommodates a variety of carton sizes without any need to reposition the sensor. A simple electrical adjustment via an onboard potentiometer suffices, while remote adjustment via IO-Link, a standardized point-to-point serial connection protocol, is available as standard at no extra cost for PNP versions.
+
CUSTOMER VALUES • Reliable, repeatable in-line quality checks on a non-contact basis • Improved quality arising from real-time detection of incorrectly packed cartons • Increased productivity as stability alarm flags preventative-maintenance needs • Single sensor accommodates a range of carton sizes without repositioning • Remote adjustment via IO-Link reduces changeover time between products
+
PRODUCT ADVANTAGES • Maximum sensing range of 300mm with pinpoint red LED • Best-in-class background-suppression black/white behaviour • IO-Link connectivity available at no extra cost on PNP versions • Dual output with stability alarm
PLUS Automation ® Limited © 2020 Lyth Farm, Lyth Lane, Ombersley, Droitwich, Worcestershire. WR9 0LG
Helping you #MakeSenseofSensors
STANDARD PHOTOELECTRIC Positioning and presence-detection photoelectric sensors which are used in almost any industry with machines that have moving parts. Industry leading sensing distances and outstanding background suppression characteristics, give very high accuracy and reliability. CLICK HERE to view these photoelectric sensors on Contrinex’s website, or call us to help guide you through selection, or answer your questions. Below are links to additional information and application stories.
+ CUSTOMER VALUES • Non-contact, all-electronic device with sensing range up to 500mm. • Large sensing range available in a physically small sensor. • Exceptional resistance to extreme vibration during operation. • Optimal space utilisation with little or no reliance on operator involvement PRODUCT ADVANTAGES • Elimination of calibration errors during normal operation • Large sensing range available in physically small sensor • Provides reliable, repeatable sensing in demanding operating conditions +
APPLICATION - STRADDLE CARRIER TRUCK
Customer Solution Highly stable, non-contact, all-electronic units from the Contrinex range of photoelectric sensors provide a reliable and cost-effective alternative. The moulded-resin sensor casings, fitted with coated-plastic sensing faces, are IP67 rated, making them virtually impervious to the harsh, salt- laden environment of a busy container port. Connection to the vehicle’s control systems is via an integral M12 connector and PVC-sheathed cable, allowing easy removal and replacement during routine maintenance. To confirm the size of the container, two pairs of diffuse sensors with background suppression are mounted centrally on each lifting beam. As the lifting beam descends, one sensor from each pair detects the presence or absence of corner castings at the central lifting points, while the other detects the presence or absence of the gap between two 20-foot containers. The combination of the two eliminates incorrect identification in the unlikely event that the first sensor returns a false-positive signal from a 40-foot container. A physically small housing and long sensing distances eliminate the risk of accidental damage arising from a mechanical collision, while rugged industry-standard housings and vacuum-encapsulated electronics minimize the effects of vibration. Operational results have been excellent; the new Contrinex sensors have eliminated calibration errors and reduced maintenance costs significantly.
At busy container seaports, purpose-designed container- handling vehicles called Straddle Carriers, operate around the clock, loading, unloading and stacking containers. Space utilisation is increasingly important and correctly identifying the size of container picked for each lift is essential for efficiency. Contrinex photoelectric sensors have been fitted to the Straddle Carriers to detect the container size and eliminate the need for drivers to carry out identification checks, saving time and avoiding errors. CUSTOMER APPLICATION A fleet of straddle carriers, purpose-designed container- handling vehicles, services a busy French container port. As a straddle carrier moves over a container, a central lifting beam lowers and locks onto the corner castings of the container; each lift comprises either a single 40-foot container or two 20-foot containers. Optimal utilisation of storage space is essential; correctly identifying the size of container picked for each lift is vital. Fitting carriers with sensors that detect the size and type of containers at the time of lifting eliminate the need for drivers to carry out identification checks, saving time and avoiding errors. The original mechanical sensors proved unreliable, losing calibration when subjected to continuous vibration during normal operation. Although the scheduled maintenance interval for each vehicle is 1,000 hours, mechanical sensors required recalibration at intervals of no more than two or three days. A highly stable replacement sensor system was required.
Customer Solution Rugged photoelectric sensors with background suppression from the Contrinex C23 range are ideal for this application. A pinpoint red LED with a 10mm-diameter light spot at the maximum sensing range of 300mm ensures highly reliable detection of objects of almost any colour against light or dark backgrounds. These sensors are well suited to both the task and the environment. Immediately after packing, a single sensor is mounted centrally above the conveyor. As each carton passes below on its way to the sealing station, the sensor detects the top surface of the packed bags. If the height of the top layer falls outside preset limits, the sensor triggers a reject mechanism that diverts the carton to a holding area for investigation. Mounted in 20mm x 30mm x 10mm miniature plastic housings, C23 photoelectric sensors are available with industry-standard PNP or NPN 3-wire or 4-wire output. Connection to the customer’s control system is via a PVC- sheathed cable with the choice of an integral M12 connector or a hermetically sealed entry. A second output provides a stability alarm in the event of reduced sensitivity, flagging the need for preventative maintenance before any performance degradation occurs. Locating sensors optimally is simple thanks to a custom- designed range of multi-position mounting brackets. An operating range between 15mm and 250mm accommodates a variety of carton sizes without any need to reposition the sensor. A simple electrical adjustment via an onboard potentiometer suffices, while remote adjustment via IO-Link, a standardized point-to-point serial connection protocol, is available as standard at no extra cost for PNP versions.
+ CUSTOMER VALUES • Reliable, repeatable in-line quality checks on a non-contact basis • Improved quality arising from real-time detection of incorrectly packed cartons • Increased productivity as stability alarm flags preventative-maintenance needs • Single sensor accommodates a range of carton sizes without repositioning • Remote adjustment via IO-Link reduces changeover time between products PRODUCT ADVANTAGES • Maximum sensing range of 300mm with pinpoint red LED • Best-in-class background-suppression black/white behaviour • IO-Link connectivity available at no extra cost on PNP versions • Dual output with stability alarm +
Customer Solution Ecolab-certified, diffuse-mode photoelectric sensors with background suppression from the Contrinex C23 product family are ideally suited to this application. These miniature cubic devices, mounted above product conveyors immediately after each buffering station, detect the presence of cheese portions as they pass underneath. Positioning sensors is simple thanks to a range of adjustable stainless steel mounting brackets. An industry-standard PNP normally open output with an M8 connector ensures optimum flexibility. Additionally, IO-Link, a standardized point-to-point serial connection protocol for sensors and actuators, is enabled on PNP versions at no additional cost, offering the advantages of digital communication without the need for special cabling. A second output provides a stability alarm in the event of reduced sensitivity, flagging the need for preventative maintenance before any performance degradation occurs. Robust sensor construction, featuring miniature (20mm x 30mm x 10mm) plastic housings, ensures reliable operation in the demanding washdown environment; Contrinex C23 devices are rated to IP67. An operating range between 15mm and 250mm, adjustable via a teach button or via IO- Link, accommodates the range of portion sizes without compromise. A brief one- or two-step teach procedure simplifies initial set-up. One-button operation allows process engineers to teach the target object and, optionally, the background, each time a new portion size is introduced. Once taught, sensitivity parameters are stored on the sensor’s inbuilt memory and may be retrieved or updated remotely via IO- Link, eliminating the need for manual adjustment. These rugged miniature sensors meet the customer’s need for reliable operation with little or no manual intervention, while unplanned sanitization is avoided. The solution is highly cost-effective with minimal non-productive time; throughput is maintained at or above target levels.
APPLICATION - DETECTING CHEESE ON FOOD CONVEYOR
During the production of individually packaged cheese portions, conveyors deliver product to packaging stations. In-line buffering stations regulate flow to match packaging throughput; miniature Ecolab-certified sensors detect the presence of each portion after buffering, triggering the packaging cycle. Sensitivity parameters for each portion size, stored on the sensor’s inbuilt memory, may be updated remotely without manual intervention, eliminating the need for unplanned sanitization between batches. CUSTOMER APPLICATION A Swiss manufacturer of premium dairy products produces a range of individually packaged cheese portions in a high- volume hygienic production facility. Once cut to size, cheese portions travel on a food-grade conveyor to a packaging station; the duration of the packaging cycle is dependent on the type of cheese and the portion size. Prior to packaging, a buffering station produces a regular flow of portions with a predetermined spacing to suit the packaging throughput. The two operations must be synchronized; the manufacturer requires a sensor system that detects the presence of each cheese portion as it leaves the buffering station, triggering the packaging cycle. Sensors must be food-grade certified and withstand the aggressive cleaning agents used during washdown routines. They must also accommodate the full range of portion sizes without the need for manual adjustment, as this would necessitate sanitization each time the portion size changes. Maximising throughput is an additional priority; rapid changeover between product batches is essential.
During high-volume packaging operations, conveyors deliver stacked cartons to shrink-wrapping stations. At each station, a wrapping machine encloses a stack in heat-shrink film and an infrared oven shrinks the film to form a sealed pack of cartons. A long-distance through-beam photoelectric sensor, mounted beside the conveyor, senses the presence of each pack as it leaves the oven and signals a plant-wide control system to increment the production throughput totals. CUSTOMER APPLICATION In factories producing fast-moving consumer goods, automated packaging operations are the norm. Confectionery products are no exception; in high-volume production, manufacturers pack sealed bags of candy in cardboard cartons, which are in turn stacked for shrink- wrapping and palletization. Packed cartons arrive for shrink-wrapping in uniform stacks. A wrapping machine encloses each stack in a tube of heavy-duty heat-shrink film; the stack then passes through an infrared oven, where the film shrinks, forming a sealed pack of cartons. After heat-shrinking, packs are conveyed to the consolidation area for palletization. Factory operators need to monitor production throughput for each packaging line. Manual counting methods are impractical and expensive. A highly reliable non-contact sensor system is needed to detect the presence of each pack as it leaves the shrink-wrapping area and to update the item count held on a plant-wide control system. Long- distance operation is desirable, as not all packaging lines are easily accessible markings as cartons leave the printer- applicator, rejecting any defective cartons.
APPLICATION - COUNTING SHRINK-WRAPPED CARTONS
Customer Solution A miniature through-beam photoelectric sensors from the Contrinex C23 range are ideal for this application. These dual-unit sensors, available with an optional alignment aid, have a maximum sensing range of 30,000mm. Each sensor comprises a separate transmitter and receiver, each mounted in a 20mm x 30mm x 10mm miniature plastic housing; connection to the control system is via a PVC- sheathed cable with the choice of an integral M12 connector or a hermetically sealed entry. Immediately after each oven, a sensor is mounted with the transmitter and receiver on opposite sides of the conveyor. Depending on the space available around the oven, either unit may be located some distance away from the track. The integral alignment aid ensures rapid, accurate set-up, even at extremes of operating range, while custom- designed mounting brackets allow optimal sensor positioning in almost any situation. As each carton breaks the light beam, the sensor detects its presence and signals the control system to increment the item count. Industry-standard PNP or NPN 3-wire or 4- wire outputs support direct interfacing with modern industrial controls. A second output provides a stability alarm in the event of reduced sensitivity, flagging the need for preventative maintenance before any performance degradation occurs. The C23 range detects fast-moving targets reliably; remote selection of switching frequency is possible via IO-Link, a standardized point-to-point serial connection protocol, available as standard at no extra cost for PNP versions.
+ CUSTOMER VALUES • Ecolab-certified sensors are ideal for hygienic production facilities • Wide operating range accommodates full range of portion sizes • Sensitivity parameters are retrieved or updated remotely via IO-Link • Unnecessary sanitization between batches is avoided • Simple one- or two-step teach procedure optimizes initial sensor set-up • Stability alarm highlights reduced sensitivity, avoiding unplanned stoppages • Downtime is avoided by eliminating the need for technicians to attend machines PRODUCT ADVANTAGES • Ecolab-certified photoelectric sensors with background-suppression mode • IO-Link serial-connection protocol enabled on PNP versions at no additional cost • Pre-taught sensitivity parameters stored on inbuilt sensor memory • Remote sensitivity retrieval or update via IO-Link • Robust sensors with miniature (20mm x 30mm x 10mm) plastic housings + + CUSTOMER VALUES • Reliable long-range item counting on a non-contact basis Improved data accuracy arising from real-time, error-free pack detection • Increased productivity as stability alarm flags preventative-maintenance needs • Single sensor accommodates a range of carton sizes without repositioning PRODUCT ADVANTAGES • Maximum sensing range of 30,000mm with integral alignment aid • IO-Link connectivity available at no extra cost on PNP versions • Dual output with stability alarm • Versatile, purpose-designed mounting brackets for ease of installation +
Find out more - Here are some suggestions:

AUTOMOTIVE APPS

During secondary packaging of bags of confectionery, manufacturers arrange bags in overlapping layers. Multi- axis pick-and-place packing robots align and pack layers of bags in preformed cardboard cartons. The filled cartons are conveyed to case-sealing stations. A highly reliable photoelectric sensor, mounted directly above the conveyor, senses the height of the top layer of bags in each carton before sealing and rejects insufficiently filled cartons CUSTOMER APPLICATION In the food processing industry, shingling, or overlapped layering, is a common technique for optimising space utilisation during secondary packaging operations. Confectionery, sealed in gusseted bags with predominantly triangular profiles, is packed in alternating, overlapping layers in preformed cardboard cartons. Once each carton is full, it passes to a case-sealing station prior to palletization and dispatch. Pre-aligned bags of confectionery arrive at the packing station in regularly spaced rows. At each station, a multi- axis pick-and-place packing robot lifts a row of bags, aligns it and lowers it into a preformed carton. Successive layers overlap each other, ensuring that space within the carton is fully utilised. Once the predetermined number of layers has been packed, the carton is conveyed to the sealing station. From time to time, one or more incorrectly formed layers occur. Individual bags may be missing from a row on arrival at the packing station, or may be damaged or misaligned. A non-contact sensor is needed to sense the height of the top layer of bags, rejecting any defective cartons. It must be reliable and require minimal maintenance.
APPLICATION - CONFECTIONERY BOX OVERFILL CHECK
APPLICATION - TRAM PANTAGRAPH DETECTION
When a tram reaches a road junction, wire-switches, installed on the overhead conductor cables, control its direction of travel, with switches in either the default “straight-through” or “turnout” positions. As the tram passes a switch in the turnout position, Contrinex photoelectric sensors mounted on the overhead cables detect the presence of the pantograph current collector so that the control system can then reset the switch to the default position. CUSTOMER APPLICATION In urban tram transportation systems, wire-switches installed on the overhead conductor cables at road junctions, control the direction of travel for the trams. The switches default to the straight-through position so that when a bus approaches a turn, the driver uses a remote trigger to change the switch to the turnout position. After the bus completes the turn, the switch reverts to the straight-through position. If a triggered switch reverts to the straight-through position prematurely, the pantagraph current collector may become disengaged, damaging the switch. Therefore tram operators install safety systems to prevent premature switching. Typically, these utilise timer circuits and a predetermined delay or mechanical sensors that rely on physical contact with the current collector, but neither system is reliable. A Swiss manufacturer of trolley-bus control systems requires a highly reliable, rugged sensor system that will detect the presence of a current collector as it passes a switch. The system must operate with minimal maintenance and withstand the varied weather conditions of an outdoor environment in Switzerland and therefore they selected Contrinex sensors.
Customer Solution Contrinex’s C23 through-beam photoelectric sensors offer high-performance, small size and high-stability. A purpose- designed metal bracket, mounted above the conductor cable, holds the transmitter and receiver units in alignment on either side of the cable. As the pantagraph current collector passes between the two units it breaks the beam, triggering the sensor and returning the switch to the straight-through position. The C23 photoelectric sensors are virtually impervious to the harsh, outdoor environment and their small physically size (30 x 30 x 15mm) eliminates the risk of accidental damage arising from a mechanical collision. The rugged construction and vacuum-encapsulated electronics within the sensor minimise the effects of vibration, ensuring a long service life. Each unit is connected to the trolley-bus control systems via a PVC-sheathed cable with a hermetically sealed entry. The receiver has an industry-standard PNP dark-on interface. The one-piece mounting bracket allows easy removal and replacement of the complete assembly during routine maintenance. Operational results have been excellent and the Contrinex sensors have proved highly reliable, eliminating switching errors and reducing maintenance costs significantly.
+ CUSTOMER VALUES • Exceptional reliability in outdoor environment • Automatic operation in optimal space  • Elimination of switching errors during year-round operation • Significantly reduced maintenance costs PRODUCT ADVANTAGES • Sensing range up to 12,000 mm • Long sensing range in small sensor • Exceptional resistance to vibration during operation +