Pepperl+Fuchs Podcasts

In this episode of AS-Interface TechTalk, Tim and Helge go over SafeLink for AS-Interface gateways. SafeLink allows safe data on an AS-Interface gateway to be shared with other gateways using Ethernet. On SafeLink, 31 gateways with integrated safety controller can interconnect and share data.  With SafeLink users can:

  • --Design safety systems of essentially unlimited size
  • --Make it easy to follow international regulations concerning e-stopping any machine that is in visual range of the e-stop button 
  • --Utilize a private Ethernet network to exchange SafeLink data, or,
  • --Utilize the fieldbus network instead

Visit our website to learn more about the AS-Interface gateways with SafeLink.

 

Direct download: techtalk131.mp3
Category:AS-Interface Technology -- posted at: 12:00pm EDT

In this episode of AS-Interface TechTalk, Tim and Helge continue to discuss the many outstanding features of the new AS-Interface module KE5:

  • --Latched removable connectors are keyed for position
  • --AS-Interface and AUX connectors are internally jumpered to simplify daisy-chaining modules while keeping the network running if the connector is removed from the module
  • --Numerical I/O indicator LEDs are easy to read even in nonilluminated environments
  • --Safe output separation allows output power to be disconnected safely by simply removing AUX power

Visit our website to learn more about the KE5 AS-Interface modules.

Direct download: techtalk130.mp3
Category:AS-Interface Technology -- posted at: 10:02am EDT

In this episode of AS-Interface TechTalk, Tim and Helge introduce a panel mount module in the new AS-Interface KE5 housing. This AS-Interface module has many unique properties including:

  • --Extremely thin, space-saving housing
  • --All front mounted, push-in connectors greatly reduce installation time 
  • --Color-coded labels on top cover
  • --Latched removable connectors

Visit our website to learn more about the KE5 AS-Interface modules.

Direct download: techtalk129.mp3
Category:AS-Interface Technology -- posted at: 9:25am EDT

AS-Interface installations can sometimes stump the experts! This week, Tim talks about an AS-Interface issue he recently tackled.  A pneumatic module indicated "peripheral fault" even after all connectors (sensors and air) had been disconnected. 

Listen to this exceedingly unlikely issue with an AS-Interface application … and be stumped as well!

Visit our website to download the Troubleshooting Guide.

Direct download: techtalk128.mp3
Category:AS-Interface Technology -- posted at: 9:47am EDT

AS-Interface wiring mistakes happen. We recommend you use our AS-Interface Maintenance and Troubleshooting Guide to learn about some of the most common wiring mistakes for AS-Interface networks.

  • --Following up on AS-Interface TechTalk Podcast 126, make sure every AS-Interface segment has its own (and just one) power supply
  • --Connect the AS-Interface cable only to the AS-Interface connection points on the module
  • --Do not ground the sensor +, or sensor -, or sensor output to machine ground

Visit our website to download the Troubleshooting Guide.

Direct download: techtalk127.mp3
Category:AS-Interface Technology -- posted at: 12:00pm EDT

AS-Interface repeaters are a simple way to extend the total length of a network by allowing multiple segments to be put together.  AS-Interface repeaters do not have an address and are transparent to user.

  • --Remember to power the new segment (after the repeater); use exactly one power supply per segment
  • --Make sure that no module is more than two repeaters from the gateway
  • --Consider extending the network by running it in "both directions" from the gateway; this allows 500 m networks without violating any rules
  • --Consider using terminators if additional length is necessary. Think about the voltage drop.

Visit our website to download the Troubleshooting Guide.

Direct download: techtalk126.mp3
Category:AS-Interface Technology -- posted at: 12:00pm EDT

AS-Interface is a floating communication network and neither one of the two leads [AS-Interface + or AS-Interface -] is connected to ground.  If this happens, the network has a ground fault, reducing the ability of the installation to deal with electromagnetic noise. Related to this is an important feature of our AS-Interface gateways giving them the ability to track communication errors.

  • --Make sure the (+) and (-) terminals of the power supply are not grounded
  • --Don't introduce ground faults along the network (pinched cables for instance)
  • --Always use the built-in error counter feature to gauge the quality of the installation
  • --Don’t forget to reset those counters to get a reliable relative error measure over time

Visit our website to download the Troubleshooting Guide.

Direct download: techtalk125.mp3
Category:AS-Interface Technology -- posted at: 12:00pm EDT

AS-Interface is used to simplify sensor wiring by replacing many discrete (parallel) sensor cables with a single AS-Interface network cable. AS-Interface is easy! Just don't do the following:

  • --Don't connect regular PNP or NPN sensors to the AS-Interface cable
  • --Don't connect a device with AS-Interface functionality to an AS-Interface I/O block (for PNP sensors)
  • --Don't try to power non-AS-Interface devices - for instance a light curtain or horn - from the yellow AS-Interface cable
  • --In the control panel, try to separate communicating devices (like AS-Interface) from high power (and thus possibly high noise); use dividers if possible

Visit our website to download the Troubleshooting Guide.

Direct download: techtalk124.mp3
Category:AS-Interface Technology -- posted at: 12:00pm EDT

Did you know that AS-Interface segments should be no longer than 100 m?  In some cases it is possible to extend that length to 200 m using a terminator.  In very rare cases an AS-Interface tuner can be used to set up even longer AS-Interface segments ... at a price.

  • --As always, sticking to the rules is best.  Keeping segments to 100 m or less allows network segments to be shaped arbitrarily
  • --The terminator works well when a segment is over 100 m but less than 200 m
  • --Do not use a terminator if the network does not need it; more is not better
  • --When using a terminating device it is important to make the segment as linear as possible
  • --The terminating device must be as far from the power source as possible
  • --Stay away from the tuner

Visit our website to download the Troubleshooting Guide.

Direct download: techtalk123.mp3
Category:AS-Interface Technology -- posted at: 12:00pm EDT

When installing AS-Interface, pay attention to how the AS-Interface cable and a 24 VDC AUX cable are routed together.

  • --DON'T strap an AUX power cable to an AS-Interface yellow cable
  • --DO separate the AS-Interface cable at least 20 cm (8") from a noisy AUX cable
  • --DON'T strap the black AUX to the yellow AS-Interface cable
  • --If a noisy power cable needs to cross a communication cable (like AS-Interface), DO so at 90 degrees

Visit our website to download the Troubleshooting Guide and other documents noted in this episode.

Direct download: techtalk122.mp3
Category:AS-Interface Technology -- posted at: 12:00pm EDT