D636/D638 Direct Drive Valve (DDV) with FieldBus

Description/Valve Construction

The Digital Interface Valve is a Direct Drive Valve (DDV) with microprocessor based electronics and a CANopen fieldbus. These Servo-Proportional Valves are parameterized and monitored using the built-in CANbus interface. Process data such as command signals and actual states can be transmitted via the CANopen process data protocal or via the analog inputs and outputs. The valve fieldbus interface conforms to standard protocols to enable users to work with a variety of standard and custom PLC and PC-based applications.

This Servo-Proportional Valve features a high force level permanent magnet linear force motor directly driving the spool. An LVDT is attached to the spool to provide spool position feedback. An internal loop is closed around the spool position. The built-in pressure transducer option is available with state-of-the-art internal loop closure at 100 microseconds sample time and easy to use on-line tuning.

This valve series includes a D636 valve with flow control (Q), and a D638 valve with pressure control (P), or optional flow and pressure control (PQ) capabilities. Up to two analog input commands or digital inputs and up two analog actual value outputs with programmable functions are available as options.


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Moog Valve Configuration Software

The MS Windows?based software enables fast and convenient start-up, diagnostics, and configuration via the CANopen fieldbus and a PC-installed CAN interface card. The interface card is available as USB, PCI or PCMCIA. The graphical user interface displays and logs status information, valve characteristics, and oscilloscope data.


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Software Downloads

Please visit Software Downloads for accessing software, updates/new versions, demonstration/trial versions, application examples and templates.



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Benefits

Fieldbus Communication
Fieldbusses offer a high degree of noise immunity, reliability and advanced diagnostic capabilities. In addition, users have remote or on-site access to configure the behavior of a valve, monitor performance, and check for troubleshooting using an easy software tool.

Repeatability
A totally digital signal path from the PLC to the valve's control loop allows for repeatable control as it eliminates typical conversion problems of an analog signal. This combined with precise factory calibration of each valve and the ability to rapidly exchange valves without new adjustments ensures every valves performs optimally, saving downtime and money for users.

Flexibility
Easy configurability, even during a machine cycle, allows valves to be matched to operating conditions without the need to adjust hardware variants for each situation.

Enhanced Functionality
Distributed control processing allows tasks to be assigned to local devices rather than the main control device, thus freeing capacity and enabling new design options.

Reduced Wiring
Ideal for multivalve systems and applications that are hard to reach.

An Energy-Saving, Robust, and Safe Design
This product is based on Moog's proven DDV product line with high driving forces, low energy consumption, and a built-in fail-safe option. Self-diagnostics of controller, hardware, and built-in transducers also provide higher safety assurance than can be achieved with analog electronics.



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Typical Applications:

Paper Machinery, wind turbines, metal-forming, and testing machines



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Technical Data:

• Port Pattern: ISO 4401- 03 -03 - 0 - 94
• Rated Flow: (@ 5 bar (75 psi) per land pressure drop):1.9 l/min [.5 gpm] to 15.1 l/min [4 gpm]
• Frequency(@90?(small signal) 210 bar [3,000 psi] Hz: 70
• Operating Pressure: 350 bar [5,000 psi]
• Step Response (@ 3000 psi [210 bar] for 100% stroke): 10 ms

Literature (English):

 Direct Drive Servo-Proportional Valve with Integrated Digital Electronics and CANbus Interface (1000Kb)
 Direct Drive Servo-Proportional Valves with Integrated Digital Electronics and CAN Bus Interface: Operating Instructions (164Kb)


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Literatur (Deutsch)

 D636 und D638 Baureihe Direktbet 鋞 igte Servoventile mit integrierter digitaler Elektronik und CAN-Bus-Schnittstelle (Deutsch) (1000Kb)
 D636 und D638 Baureihe Direktbet 鋞 igte Servoventile mit integrierter digitaler Elektronik und CAN-Bus-Schnittstelle-Betriebsanleitung (Deutsch) (1400Kb)