Safety controller cuts development time and cost for mobile hydraulic systems
12 July 2010
A new programmable hydraulics controller from Parker Hannifin is aimed at OEMs and system integrators developing mobile and off-highway equipment. Designated IQAN-MC3, and forming part of Parker’s IQAN family of motion and control products, the new device enables both safety and operational functions to be controlled from a single module; this allows system design and build times and costs to be cut, while improving machine performance, safety and productivity.
The new IQAN-MC3 module, used in conjunction with Parker’s IQAN Studio Software Tools, allows both operational and safety functions to be programmed, controlled and monitored by a single controller. To make this possible, IQAN-MC3 is designed to IEC 61508 (certification pending) and effectively enables the operation and performance level of all safety functions to be proven as part of a SIL2 methodology, or to be used as part of a PLd subsystem within EN ISO 138489-1.
Although the IQAN-MC3 can be used to manage both safety and operational functions, it is always the former that takes priority. The new module can be used as a stand alone controller, with local I/O, or be integrated into larger systems using four CAN buses. Each module has 16 digital inputs and 16 analogue inputs all of which can be set for safety related signals. Additionally, there are four proportional current outputs designed to drive proportional hydraulic valves, with each output controlling one bi-directional valve section, as well as five digital outputs for driving on and off solenoids.
Each MC3 unit is constructed to meet the rigours of mobile and off-highway applications, with a robust enclosure that withstands high levels of vibration and humidity, is sealed to IP66 and operates at temperatures from -40 to +85ºC.
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