Jorbercnc

Proportional Control Valves D631 Series ISO 4401 Size 05

Operating Instructions

1

D631 Series

Table of contents
1. 2. 3. 4. 5. 6. 7. 8. Safety Instructions Description Installation Setting up Maintenance Malfunctions, Causes and Elimination Declaration of Manufacturer Tools, spare parts and Accessories page page page page page 2 3 4 5 6
Screw plug Feedback spring

Null adjustscrew

Torque motor

Hydraulic amplifier

Spool

page page

6 7

Bushing

X P

A

T

B (T2)

1.
1.1

Safety Instructions
Warnings and symbols refers to special orders and prohibitions to prevent damage 1.5 refers to special orders and prohibitions to prevent injury or extensive damage 1.5.1 1.5.2 1.4.2 Work with electrohydraulic valves must be carried out only by personnelhaving special knowledge and experience in plants running with electrohydraulic controls. Safety instructions for specific operational phases Take the necessary precautions to ensure that the machine / plant is used only when in a safe and reliable state. Check the machine / plant at least once per working shift for obvious damage and defects (e.g. leakage). Report any changes to the responsiblegroup / individual immediately. If necessary, stop the machine immediately and secure it. In the event of malfunctions, stop the machine / plant immediately and secure it. Have any defects corrected immediately. If the machine / plant is completely shut down for maintenance and repair work at the valve, it must be secured against inadvertent start up by: r Locking the principal control elements andremoving the key or r attaching a warning sign to the main switch. Safety instructions for the operation of hydraulic plants Work on electrohydraulic equipment must be carried out only by personnel having special knowledge and experience in electrohydraulic controls. Check all lines, hoses and fittings of the plant regularly for leaks and obvious damage. Repair damage immediately. Splashed oil maycause injury and fire. Before removing the valve depressurize all system sections to be opened, pressure lines and accumulators of the hydraulic system in accordance with the specific instructions for the plant. When handling oil, grease and other chemical substances, observe safety regulations valid for each product.

1.2 1.2.1

Correct application The valves D631 Series are proportionalvalves suited for electrohydraulic position, velocity, pressure and force control. The valves are designed for flow rate control in hydraulic systems that operate with mineral oil based fluids. Using the valves for purposes other than those mentioned above is considered contrary to the intended use. The user bears entirely the risk of such misuse. Correct application involves also observing theoperating instruction and complying with the inspection and maintenance directives.

1.5.3

1.5.4

1.6 1.3 1.3.1 1.3.2 Organizational measures We recommend to include this operating instruction into the maintenance plan of the machine / plant. In addition to the operating instruction, observe also all other generally applicable legal and other mandatory regulations relevant to accident preventionand environmental protection. Instruct the operator accordingly. All safety and danger prevention instructions of the machine/plant must meet the requirements of EN 982. Selection and qualification of personnel 1.6.4 1.4.1 Only well-trained and instructed personnel are allowed to work with MOOG proportional valves. 1.6.1

1.6.2

1.3.3

1.6.3

1.4

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D631 Series

2.
2.1 2.1.1Description
Operation General The D631 Series proportional flow control valves are throttle valves for 3- and preferably 4-way applications. They consist of an electromechanical transformer (torque motor), a hydraulic amplifier (nozzle/flapper principle), a spool in a bushing and a cantilever feedback spring. The torque motor contains coils, pole pieces, permanent magnets and an armature. The...