SED 024.16.720 - Features

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System Description
Type 024.16.720
6.4.2. Features
•Models
for single-acting valve actuators.
•Positionmeasuringsystem
Contactless and therefore wear-free position measuring system.
•Microprocessor-controlledelectronics
for signal processing, control and valve control.
•Controlmodule
The device is controlled via 2 buttons and a 4-pole DIP switch. 2x 2-colored LEDs indicate different sta-
tuses of the device.
•Controlsystem
The control system consists of 2 solenoid valves. One valve is used to aerate and another to deaerate the
pneumatic actuator. The solenoid valves operate according to the rocker principle and are controlled with
aPWMvoltageviathecontroller.Doingsoachievesahigherexibilitywithregardtoactuatorvolumeand
nalcontrolspeed.Thedirect-actionmodelhasanoriceofDN0.6.Inlargerpneumaticactuatorsthe
solenoidvalvesfeaturediaphragmamplierstoincreasethemaximumowandthereforetoimprovethe
dynamics (DN 2.5).
•Positionfeedback(optional)
The position of the valve can be transmitted to the PLC via an analog 0/4-20 mA output.
•Binaryinput
If a voltage > 10 V is applied, SAFE POSITION is activated, i.e. the valve is moved to the safety position
(factory setting, can be changed with communications software).
Pneumatic interfaces •
1/4“ connections with different thread
forms (G, NPT)
hose plug-in connection
Electrical interfaces •
Circular plug-in connector or cable
gland
•Body
The body of the positioner is protected from excessively high internal pressure, e.g. due to leaks, by a
pressure limiting valve.
•Communicationsinterface
Forcongurationandparameterization.