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Process controller RE 3304

Process controller RE 3304

Process controller RE 3304

Product catalog summary
Series Overview: The document describes the RE 3304 series of electronic 3-term step-controllers with PI-control, designed for controlling electric actuators. Key features include manual set point selection, 4-20mA input for actual value, actual value indication, built-in 24VDC power supply for transducers, limit value switches, and manual/automatic operation. It is certified for boiler feed control applications.
Functionality: The controller compares set and actual values using a voltage comparator. The difference is amplified and used to control relay stages for opening and closing directions. Proportional band capacitors are linearly charged, generating a saw-tooth impulse opposed to the set-actual value difference. Adjustable parameters include Xp, Tn, and Ty. Indicator lamps show valve positions and limit value states.
Technical Data: The controller operates on 110V/230V 50Hz with a power consumption of 10VA. It features a 50Ω input resistance, 4-20mA actual value input, and a 24VDC/80mA output for transducers. The ambient temperature range is -10°C to +40°C. The plastic case dimensions are 144x72x165 mm, suitable for switchboard mounting. The set point range is 0-100%, with adjustable sensitivity (1-10%) and proportional band (10-100%). Protection is rated at IP20.
Options: The RE3304 offers options for trend-intrusion to adjust control behavior in steam vessels with rapid steam delivery changes, and quantity intrusion for water and steam.
Electrical Connections: The document provides a detailed schematic for electrical connections, including relay outputs, limiting value contacts, and inputs for potentiometer and current.
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Catalog excerpts

Process controller RE 3304-1

3304-7010 Analoge Regler Analog controller Régulateur analogiques Baureihen Series Séries • RE 3304 RE 3304 Elektronische 3-Punkt-Schrittregler mit PI-Verhalten Electronic 3-term step-controllers with PI-control Régulateurs électroniques PI,à 3 points, pas à pas • • • • • • • • • • • • • • • • • • 07/2009 Ansteuerung elektrischer Stellantriebe Sollwertvorgabe durch Handsteller Eingang 4-20mA , Istwert Istwertanzeige eingebaute Stromversorgung für Geber 24VDC Grenzwertschalter Hand / Automatikbetrieb Bauteilkennzeichnung TÜV.WRS(WR).91-355 für Anwendung bei Kesselspeiseregelung Drive for electric actuators Set point selection by manual controllers Input 4-20mA , actual value Indication of actual value Installed power supply for transducer 24VDC Switches for limiting values Manual and automatic operation Component mark TÜV.WRS(WR).91-355 for application boiler feed controls • • • • • • Pour commande de servomoteurs électriques Réglage de la valeur de consigne par bouton manuel Entrée 4-20mA , valeur réelle Indicateur de valeur réelle Alimentation électrique installé pour le transmetteur 24VDC Commutateur de valeur limitée Fonctionnement manuel ou automatique Numéro d‘ agrégation TÜV.WRS(WR).91-355 pour utilisation comme régulateur de niveau pour chaudières page 1

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Process controller RE 3304-2

Soil- und Istwert werden in einer Spannungsvergleichs- schaltung miteinanderverglichen und die Differenz iiber einen Operationsverstarker verstarkt. Das Ausgangssig- nal dient zur Ansteuerung zweier Endstufen mit Relais fur die Laufrichtungen >Auf< und >zu<. Gleichzeitig mit der Schaltung der Relais werden Ruckfuhrkondensato- ren iiber ein Transistor annahernd linear geladen und ein der Soll-lstwertdifferenz entgegengerichteter Sage- zahn-impuls erzeugt. Die Hohe dieses Ruckfuhrimpul- ses, seine Anstiegs- und Abfallzeit, sind an den Einstel- len Xp, Ty, Tn einstellbar. Die Schaltzustande der...

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Process controller RE 3304-3

Analoge Regler Analog controller Régulateur analogiques 3304-7030 Maßblatt / dimension sheet / Encombrement RE3304 % Ty % Xp Tn X HW % 72mm NW W% - + 144mm 156mm 66mm 10mm 137mm 07/2009 page 3

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Process controller RE 3304-4

Analoge Regler Analog controller Régulateur analogiques 3304-7040 Elektrische Anschlüsse / electrical connections /Câblage RE3304 L 1 L N 2 N PE 3 PE 4 N* 6 X+ 7 + - 12 S 13 - *3.Eingang Poti 10 + Motor Moteur X- Relay output,isolated Switching capacity 230V,50Hz,2A Sortie de relais,libre de potentiel Pouvoir de coupure 230V,50Hz,2A 18 14 16 HW *4.Eingang Strom 19 *1.Grenzw 20 21 NW 2 4 3 5 21 22 23 0-100% 6 2 - 14 26 25 3 2 1 + - + 20mA Niveaugeber Level transmitter Emetteur de niveau NI1321/32 ST 5102 ST 5113 1 15 *1 Limiting values contacts de fin de course *2 X Input X entree *3 Potentiometer...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.