The ADN 409 has been developed as a CNC control system for operation with a directional proportional valve. The assembly consists of two modules, of types MD1 and MD14. The MD1 module is the basic module (equivalent to the ADN 402). The MD14 is the CNC expansion module. The MD14 CNC module is also used in other device combinations, due to the modular structure of this system.
The ADN 402 basic module has, in this particular case, already been described, and the following outline description therefore relates primarily to the add-on module.
The MD14 CNC module is equipped with an SSI interface for operation with an absolute position encoder, such as absolute shaft encoders or Temposonic, for example. In addition, a pulse generator interface which permits incremental position measurement has also been included. This position measurement system uses an A and a B channel for detection of direction. Correct detection of zero is possible by means of an index signal.
The pulse generator is supplied with 24V from the ADN 409 device. The MD14 CNC module is equipped with its own signal processor, which has a processing speed of 40MIPS. A further four inputs and four outputs have also been included, signifying that the ADN 409 CNC control system has a total of ten inputs and five outputs.
The use of a Profibus DP is also possible as an option. The necessary GSD file is provided if a Profibus is used.
The ADN 409 device has been created by combining the MD1 (ADN 402) and the MD14. It has a width of 45mm and is suitable for installation on DIN 50022 rails.
The ADN 409 is equipped with two microprocessors, each of 40MIPS; in special cases, a combination of digital and analog sensors is therefore possible without impairing the microprocessors' processing speed.
The ADN 409 is equipped with the CAN bus, which permits communication of a large number of devices with one another. Augmentation of such a group of devices with the Profibus assures interface-capability with the majority of PLC control systems.
As already mentioned in the outline description of the ADN 402, the MD1 basic module is equipped with output stages for proportional valves up to 3000mA. The output stages feature fast de-excitation, which permits de-excitation of the valve current within 2 to 4ms.
All settings on the ADN 409 are effected using the ADN configurator via an RS232 interface linked to a PC or laptop computer.
The input software ADN configurator is available on the Internet.