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Features, English versions, Control valves – Burkert Type 8631 User Manual

Page 13: Electrical interfaces, Pneumatic interfaces, Housing, Options, Intelligent communication circuit

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8631 - 11

T

ECHNICAL

D

ATA

english

Versions

for single and double-acting solenoid valves

Control valves

Solenoid valve working on the rocker principle

1 x 3/2-way control valve with single-acting valve actuators

2 x 3/2-way control valve with double-acting valve actuators

TOP Control on/off with EEx-i approval:
Pilot valve - solenoid valve with EEx-i approval (PTB 01 ATEX 2173)

Electrical interfaces

Cable bushings with screw terminals

Multipole circular plug connector, 12-pole

With bus control (AS interface), the 4-pole M12 circular plug connectors standardized for this purpose or
cable bushings with screw terminals are used.

TOP Control on/off with EEx-i approval:
Cable connector with screw terminals

Pneumatic interfaces

1/4’’connectors in various threads (G, NPT, RC)

Housing

The housing of the TOP Control on/off is protected by a pressure relief valve from excessive internal
pressure, e.g. resulting from leaks.

TOP Control on/off with EEx-i approval:
Housing cover secured against unauthorised opening with a self-tapping screw.

Options

Position repeater and display

24 V device:
Inductive proximity switches (initiators)
Position repeat via binary outputs (make contacts)

24 V, 110 V or 230 V device:
Mechanical limit switches
Position repeat via binary outputs (make or break contacts)

Adjustment of the switching points on the position repeat switches is done during assembly of the TOP
Control on/off on the valve actuator.

TOP Control on/off with EEx-i approval:
Namur sensors with manufacturer´s declaration
The sensors can be changed by the operator via adjusting screws.

Intelligent communication circuit

AS interface / DeviceNET

Automatic reduction of the holding current for the control valves.

Features