System Description; Structure; General Description - EBRO ARMATUREN EP 501 B Quick Start Manual

Type EP 501 B
Systemdescription
5 SYSTEM DESCRIPTION
5.1

Structure

Mechanical position indicator
Fig. 1: Structure, positioner Type EP 501 B
Display module with 3 LEDs
Working connection 2
(connection: A2)
Pressure supply con-
nection 1.4 ... 7 bar
(connection: P)
Working connection 1
(connection: A1)
Air exhaust connection/
air exhaust filter
Pressure-relief valve
Fig. 2: Structure, positioner Type EP 501 B
5.2 General description
The positioner Type EP 501 B is a digital, electro-pneumatic position
controller for pneumatically actuated control valves. The device incor-
porates the main function groups
- Position sensor
- Electro-pneumatic control system
- Microprocessor electronics
The position sensor measures the current positions of the control valve.
The microprocessor electronics continuously compare the current
position (actual value) with a position set-point value specified via the
standard signal input and supplies the result to the position controller.
If there is a control difference, the electro-pneumatic control system
corrects the actual position accordingly.
english
Electronics module
Internal position sensor
Control system
Axle for position sensor
Cable bushing
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