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Direct Drive Digital Control Valves D638/D639

Direct Drive Digital Control Valves D638/D639
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Direct Drive Digital Control Valves D638/D639 - 1

Direct Drive Digital Control Servo Valves PRESSURE (p) AND PRESSURE-FLOW (pQ) CONTROL High-performance pressure control with higher dynamics and the ability to easily and exactly tune the pressure controller gain What moves your world

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Direct Drive Digital Control Valves D638/D639 - 2

Moog Direct Drive Digital Control Servo Valves with p and pQ Control Whenever the highest levels of motion control performance and design flexibility are required, you’ll find Moog expertise at work. Through collaboration, creativity and world-class technological solutions, we help you overcome your toughest engineering obstacles. Enhance your machine‘s performance. And help take your thinking further than you ever thought possible. This catalog is for users with technical knowledge. To ensure all necessary characteristics for function and safety of the system, the user has to check the...

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Direct Drive Digital Control Valves D638/D639 - 3

Moog Direct Drive Digital Control Servo Valves with p and pQ Control Product Overview The Moog Digital Control Servo Valves (DCV) are closedloop hydraulic products that are used in industrial machinery to precisely control fluid flow, pressure, position or force using advanced digital fieldbuses for communication (e.g. EtherCAT, PROFIBUS-DP, CANopen) or analog interfaces. The D638 and D639 series are equipped with an integrated pressure sensor in the A-channel as well as a digital pressure controller and are thus a compact pressure control unit. For maximum flexibility, customers can choose...

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Direct Drive Digital Control Valves D638/D639 - 4

Moog Direct Drive Digital Control Servo Valves with p and pQ Control Description of operation Direct Drive Digital Control Valves with p and pQ Control Direct Drive Digital Control Valves Axis Control The D638 and D639 Series Valves, sizes 03 and 05 are Direct Drive Servo Valves. The valves are control valves for 2-, 2x2-, 3- and 4-way applications and are suitable for electrohydraulic control of pressure and flow even under high dynamic requirements. Axis Control functionality can also be added to the valve enabling closing of the external control loop and decentralized control in an...

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Direct Drive Digital Control Valves D638/D639 - 5

Moog Direct Drive Digital Control Servo Valves with p and pQ Control Direct Drive Servo Valves with Integrated Digital Electronics and Integrated Pressure Sensor D638 Series Direct Drive Servo Valve • Fieldbus data transfer: Electrically isolated fieldbus interface • Diagnostic capabilities: Integrated monitoring of important ambient and internal data. Valve parameters can be changed on site or remotely • Flexibility: Since parameters may be downloaded using the fieldbus or a high level PLC program, valve parameters may be tuned during a machine cycle while the machine is operating •...

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Direct Drive Digital Control Valves D638/D639 - 6

Moog Direct Drive Digital Control Servo Valves with p and pQ Control All Digital Control Valves Moog offers the ability to exactly tailor hardware, configurations and functionality to the customer’s application need Optimize machine performance to gain competitive advantages Improved dynamics over traditional proportional valve technology due to high performance design of hardware and software Increases machine performance in areas such as higher acceleration, improved accuracy, leading to enhanced machine productivity Availability of ATEX and IECEx approved versions with hot-swappable...

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Direct Drive Digital Control Valves D638/D639 - 7

Technical data Moog Direct Drive Digital Control Servo Valves with p and pQ Control SIZE 03 - D638 SERVO VALVE General Technical Data Valve design 1-stage, with spool and bushing Mounting pattern ISO 4401-03-03-0-05 (with or without leakage oil connection Y) Installation position In all orientations, venting screw has to be on top during venting Storage temperature range Ambient temperature range Vibration resistance Shock resistance MTTFd value according to EN ISO 13849-1 Hydraulic Data Maximum operating pressure Port P, A, B Rated flow at ΔpN 35 bar (500 psi)/spool land Maximum flow...

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Direct Drive Digital Control Valves D638/D639 - 8

Technical data Moog Direct Drive Digital Control Servo Valves with p and pQ Control SIZE 03 - D638 SERVO VALVE Electrical Data Duty cycle Degree of protection according to EN 60529 IP65 with mounted mating plugs Permissible ripple of supply voltage Maximum current consumption Power consumption of the motor in middle position Power consumption maximum Fuse protection, external, per valve • Emitted interference as per EN 61000-6-4:2005 (CAN open and PROFIBUS-DP) • Emitted interference as per EN 61000-6-3:2005 (EtherCAT) • Immunity to interference as per EN 61000-6-2:2005 (evaluation criterion...

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Direct Drive Digital Control Valves D638/D639 - 9

Technical data Moog Direct Drive Digital Control Servo Valves with p and pQ Control SIZE 03 - D638 SERVO VALVE 5/10/20/40 l/min Amplitude ratio [db] Frequency Response Step Response

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Direct Drive Digital Control Valves D638/D639 - 10

Technical data Moog Direct Drive Digital Control Servo Valves with p and pQ Control SIZE 03 - D638 SERVO VALVE Pressure Signal Pressure signal characteristics pA [%] pN Flow Signal Flow signal characteristic - in main line Flow signal characteristic - in bypass line Note: Measured with system pressure pp of 140 bar (2,000 psi), oil viscosity 32 mm2/s and oil temperature of 40°C (104°F).

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Direct Drive Digital Control Valves D638/D639 - 11

Technical data Moog Direct Drive Digital Control Servo Valves with p and pQ Control SIZE 03 - D638 SERVO VALVE Hydraulic Symbol Flow signal curves at ΔpN = 35 bar (500 psi) per spool land 2x2-way valve in bypass line Typical Characteristic Curves 3-way valve in main line 4-way valve in main line Venting screw Hole Pattern of Mounting Surface The mounting surface must conform to ISO 4401-03-03-0-05. Observe mounting length of minimum 77 mm (3.0 in) and O-ring recesses for Y. For maximum flow the ports for P, T, A and B must be designed with Ø 7.5 mm (0.3 in), not according to the standard....

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Direct Drive Digital Control Valves D638/D639 - 12

Technical data Moog Direct Drive Digital Control Servo Valves with p and pQ Control SIZE 05 - D639 SERVO VALVE General Technical Data Valve design 1-stage, with spool and bushing Mounting pattern ISO 4401-05-05-0-05 (with or without leakage oil connection Y) Installation position In all orientations, venting screw has to be on top during venting Storage temperature range Ambient temperature range Vibration resistance Shock resistance MTTFd value according to EN ISO 13849-1 Hydraulic Data Maximum operating pressure Port P, A, B Rated flow at ΔpN 35 bar (500 psi)/spool land Maximum flow...

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