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Pneumatic valve module

With just an 11-mm width

Asco Numatics (Germany) has launched the 501 series of compact pneumatic valve modules. They are suitable for the CANopen and Devicenet compatible manifold devices.

Each module is specified for a flow of 400 l/min (Photo: Asco Numatics)

THE IP65-RATED MODULES FEATURE A 5/2 single of double solenoid pneumatic function (3/2 NC-NO, 5/2, and 5/3). The CANopen interface complies with the CiA 401 profile for generic I/O modules. It supports bit-rates up to 1 Mbit/s. The Devicenet interface is limited to 500 kbit/s. The temperature range is specified as -10 °C to +50 °C. The module series includes pressure control units, sandwich pressure blocks, speed control blocks, shut-off blocks and exhaust blocks.

According to the provider, who is part of the Emerson enterprise, the modules are suitable for food and beverage, pharmaceutical, and packaging machines. There are also Atex-approved (Zone 2-22) available.

The manifolds integrate the bus-interface, which is accessible by means of 5-pin Mini-style connector (the pinning for CANopen and Devicenet is the very same). The setting of bit-times and node-IDs is done by means of the local display. The days of DIP-switches are gone. It is possible to combine valves with generic digital and analog I/O ports. The module integrated graphic display is also used for diagnostic purposes, which avoids remote HMIs or plug-in handheld tools. For both CAN-connectable versions the maximum number of inputs and outputs is 256 each.

CANopen profiles for RFID or object/item detection
A couple of years ago, CiA has released the CiA 445 profile for RFID devices. It is in the draft standard proposal (DSP) status and has not been updated or reviewed for some time. Recently, CiA has established the CANopen SIG (Special Interest Group) for object/item detection. It specifies a generic profile for detecting and measuring objects, in particular the size and the distance. This could be achieved with cameras, infrared sensors or other detecting technologies. Both profiles are intended but not limited for applications in mobile machines including cranes and other lifting equipment.