Speed sensor and safety controller

Friday, 07 August, 2009 | Supplied by: Rockwell Automation Australia



The Allen-Bradley Guardmaster MSR57P speed-monitoring safety relay monitors all motion for small to mid-size machines and provide appropriate safety control, combining the functionality of a speed sensing module with a configurable safety controller.

The unit is designed for safety applications where access is required to guarded areas, under defined and controlled conditions, while a machine is still running.

Monitoring up to two encoders and five dual-channel safety sensors, the device supports a range of safety modes and is suited to safety applications up to SIL3 and Cat 4. It can concurrently monitor motion, E-stop devices, guards, enabling switches and selection switches, and permits monitoring of single- and multi-axis machines with one dedicated device per axis, while supporting six safety outputs and four auxiliary outputs.

The unit can monitor safe maximum speed, safe limited speed, standstill speed, safe direction of rotation and safe acceleration rate. It also supports inputs from a three-position enabling switch. The switch can be held by an operator entering the hazardous area. If it’s released or squeezed too hard - as would be the case if the operator risked injury - the machine would be immediately de-energised.

Online: www.rockwellautomation.com/en_au
Phone: 03 9757 1111
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