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The GEMU 4221 combi switchbox with integrated 3/2 way pilot valve for pneumatically operated quarter turn actuators has a micro-processor controlled intelligent position sensor as well as an analogue integrated travel sensor system. The optical position feedback is via LEDs. Electrical activation and position feedback is provided via 24 V DC signals or via fieldbus (AS-Interface, DeviceNet, LON).
The GEMU 4221 combi switchbox has a solid transparent plastic housing cover and a metal base

Features
  • Integrated end position control
  • Integrated pilot valve for single or double acting actuators
  • Integrated travel and system control
Advantages
  • Design:
    • 24 V version but also direct field bus connection to
    • AS-Interface
    • DeviceNet
    • LON
  • Easy setting of valve end positions by automatic or manual programming mode
  • Reduced cabling time
  • Reduced planning time

Specifications

Type 4221
Field Bus AS-Interface; 31 Slaves, Spec. 2.11 AS-Interface; 62 Slaves, Spec. 2.11 DeviceNet; 63 Slaves, Spec. Release 2.0 Errata 5 LON Without
Accessory Accessory
Housing Material Base: black powder coated; Cover: PMMA, transparent; Seal: FPM Base: black powder coated; Cover: Polysulfone, transparent; Seal: FPM Base: Stainless steel 1.4301; Cover: PMMA, transparent; Seal: FPM Base: Stainless steel 1.4301; Cover: Polysulfone, transparent; Seal: FPM
Function 1 Pilot valve, position feedback OPEN/CLOSED 2 Pilot valves, position feedback OPEN/CLOSED
Electrical Connection 2 x M12 plug M12 plug M12 plug + M12 socket M12 plug
Transmission 2-wire AS-Interface DeviceNet Group 2 only Standard isolation cable Transceiver FFT 10A Transceiver LPT 10
Voltage 24 V DC Field bus specific Link Power via bus wire
Travel Length Potentiometer, 90° travel
Pneumatic Connection Air supply 1/4" straight, st.st., Swagelok and Outlet 6 mm straight, st.st. Swagelok Air supply 6 mm angled connection and Outlet 6 mm angled connection Air supply 6 mm T-connection and Outlet 6 mm angled connection Air supply and outlet 6 mm straight, st.st. Swagelok
Protection Class to EN 60529 IP 65
Electrical Protection Class III
Weight 380 g
Mounting Position Optional

Operating Conditions

Medium Quality classes to DIN ISO 8573-1
Dust Content Class 3
(max. particle size 5 µm)
(max. particle density 5 mg/m3)
Pressure Dew Point Class 4
(max. pressure dew point 3°C)
Oil Concentration Class 5
(max. oil concentration 25 mg/m3)
Operating Pressure 2-6 bar
Flow Rate 100 lpm
Ambient Temperature 0 to +50 ºC
Attention Note max. control pressure of valve actuator!

Approvals

AS-Interface Cert. No. 46901 (AS-Interface A2 version) 47001 (AS-Interface A3 version)
DeviceNet Cert. No. Composite Test Revision 18 ODVA File Number 10168

Directives

EC EMC Directive 89/336/EEC
Emission of Interference AS-Interface Spec. 2.11 (AS-Interface version) EN 61000-6-3 (24 V/DeviceNet version)
Immunity to Interference AS-Interface Spec. 2.11 (AS-Interface version) EN 61000-6-2 (24 V/DeviceNet version)
EC Low Voltage Directive 73/23/EEC