PLCs, DCSs & Controllers


Safety controller with click-and-go functionality

February 2008 PLCs, DCSs & Controllers

Banner Engineering has introduced the SC22-3 safety controller, an easy to configure safety module that incorporates numerous input devices and manages multiple safety-related functions. The flexible unit replaces multiple dedicated safety modules to integrate E-stop buttons, interlocking switches, safety light screens, two-hand controls, safety mats, rope pulls and many other devices for a powerful, cost-effective safety solution. The SC22-3 features 22 input terminals, which monitor both contact-based and PNP solid-state input devices, and each input circuit is configurable to monitor an input signal or provide 24 V d.c. sources when needed. Configuration is simple via Banner's intuitive PC Interface or the module's built-in LCD display and pushbuttons.

The controller dramatically reduces the time and complexity of interfacing multiple safety functions and devices by incorporating them into one easily configurable device. The controller's click-and-go system offers simple configuration for safeguarding functions right on a computer, through use of Windows XP or 2000 on a PC with USB port, or by using the XM card and programming tool. The SC22-3's built-in front panel LCD screen and bright LED indicators provide status updates for simple monitoring and troubleshooting. In addition, industry standards including the Safety Integrity Level (SIL) 3 per IEC 62061 and IEC 61508, and Category 4 Performance Level (PL e) per ISO 13849-1 are complied with.

"The unit can easily replace several traditional safety modules by combining multiple safety and non-safety device functions into one cost-effective and time-efficient device," said Mike Carlson, technical manager for Banner's safety products. "The SC22-3 allows you to perform muting, bypassing and additional functions, and provides exceptional diagnostics and the versatility to accommodate a wide range of input devices from Banner or other manufacturers." Carlson adds, "This safety controller ensures maximum safety while minimising installation and troubleshooting time, automatically detecting faulty devices or wiring configuration errors to help you quickly locate and clear faults in the system."

The controller is easily programmed using the PC or onboard interface's to define each device and assign a combination of the three independent safety outputs for each device to control. Users can quickly create and document even complex safety logic configurations, incorporating multiple safety inputs and outputs in minutes. Fourteen types of safety and non-safety input device category choices, and several dual and single channel circuit types are provided.

Applications

The safety controller is ideal for integrating light curtains, muting functions, ON/OFF switches, and numerous other safety and non-safety input devices. It is suited for a wide variety of uses in guarding entry/exit points, operator load/unload applications, and other applications where operator and machine safety is critical. Examples include the following:

* Interlocking access panels.

* Safeguarding personnel in operator load/unload applications.

* Machine guarding and manual feed operations.

* Entry/exit guarding applications.

* Power presses and other machine tool applications.

* Equipment and process protection.

Several features have been incorporated for easy installation and use:

* 22 configurable inputs to accomodate both safety and non-safety input devices.

* Monitors an input signal or provides 24 V d.c sources when required.

* Combines safety monitoring, bypass, muting and many additional functions into one controller.

* Offers built-in LCD display screen and bright LED indicators for status updates.

* Allows configurations to be stored on a hard drive, flash drive, CD or e-mailed as an attachment.

* Provides advanced diagnostics by monitoring input, output and system properties.

* Offers all-new click-and-go system to easily configure safeguarding functions for monitoring output status functions.

* Allows documentation to be exported as a PDF or DXF file.

* 35 mm DIN-rail mountable housing.

* 24 V d.c. operation.

* Accommodates input devices from Banner and other manufacturers.

For more information contact RET Automation, +27 (0)11 453 2468, rodney.topham@retautomation.com, www.retautomation.com



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