Product Description; Intended Area Of Application; Structure And Function; Functions Of The Control Electronics - Burkert 3281 Operating Instructions Manual

5

PRODUCT DESCRIPTION

5.1

Intended area of application

The motor valve Type 3281 is designed to control the flow of liquid and gaseous media. Only clean, liquid or
gaseous media that do not attack the valve body and seal materials may be controlled.
NOTE
Damage to the valve body and seals due to unsuitable media.
Unsuitable media can cause damage to the valve body and seals.
▶ Use only suitable media.
▶ Check resistance in each individual case.
5.2

Structure and function

The valve spindle is driven by a stepper motor. The rotary rotational movement of the motor is converted into
a linear movement by means of a threaded spindle. The valve spindle is rigidly connected to the threaded
spindle. The valve spindle is connected to a control cone.
Stepper motor
Valve spindle
Control cone
Fig. 1: Structure of the valve
The flow or switching of the valve is regulated by means of a stepper motor actuator, which is controlled by
the integrated control electronics. No external motor control is required for step control.
5.2.1

Functions of the control electronics

• Control of the valve opening by processing the external set-point values.
• Output of the valve statuses via the LED display.
• Detection of the position after power failure.
10 - In the event of a power failure, the current position of the valve is retained.
english
Type 3281
Product description
Circular plug-in connector
Actuator cover
Wrench flat of the body
connection
Valve body