Linear actuators manufacturers for 2-way and 3-way globe valves DN 15...80
H Modulating actuator (AC/DC 24 V) with emergency control functionControl DC 0...10 VApplications Y Operation of globe valves. Mode of operation Modulating control is effected by means of a standard 0…10 V control signal. When the actuator is deenergized, the actuator spindle of the NVF.. type retracts and that of the NVF..E type extends. Wiring diagram
~ T Connection viasafety isolating
transformerControl signal from controllerMeasuring voltage U for position indication Product features
Functional reliability
-
AC 24 V The actuator is short-circuit-proof and protected against polarity reversal. The stroke is adapted automatically and is also overload-proof.
+
Simple attachment to the neck of the valve by means of a clamping strap. Semiautomatic coupling of the valve stem to the actuator spindle. The actuator can be rotated through 360° on the neck of the valve. DC 24 V
!
Y DC 0...10 VU DC 2...10 V Manual operation Position indication
Y2 Inserting a 5 mm hexagonal key and turning it clockwise causes the actuator spindle to extend from the actuator housing (pushing). Together with the action of the valve, this causes the flow of water to increase. The actuator spindle retains its position until the
power feeding is energized (the controller takes fiorst priority). The stroke of the valve is indicated mechanically on the bracket; the maximum stroke adjusts itself automatically. There is a twin-color LED status indicator under the cover of the housing. Safety note The linear actuator contains no components which can be replaced or repaired by the user. Note on delivery
12 345 The UNV-002 bracket is included in the scope of delivery, providing the valve and the actuator are ordered together.
1 2 ~ T 3 4 5 -
+ Y
/
Z Y2 U
NVF24-MFT(-E) Dimensions (incl. UNV-002) Technical data NVF24-MFT NVF24-MFT-E
Emergency control functionPullingPushingNominal voltageAC 24 V 50/60 Hz, DC 24 VNominal voltage rangeAC 19.2…28.8 V, DC 21.6…28.8 VFor wire sizing10 VA
Power consumption5.5 WConnecting cable1 m, 5 x 0.75 mm 2 ControlDC 0…10 V @ 100 k Ω Operating rangeDC 2…10 V for 0…100 % strokePosition feedbackDC 2…10 V @ 0.5 mAUni-rotation±5 %Nominal stroke20 mm
Actuating force800 N
Manual operationHexagonal key, self-resettingRunning time150 sEmergency actuating time< 1.5 s/mm
Sound power levelMax. 35 dB (A) or max. 50 dB (A) in emergency operation (spring)
Position indicationMechanical 10…20 mm strokeProtection class III (safety extra-low voltage)Degree of protectionIP54
Ambient temperature rangeNon-operating temperature
Humidity test 0° …+ 50° C –40° …+ 80° CTo EN 60730-1EMCCE according to 89/336/EEC
Software class AMode of operationTo EN 60730-1Type 1 to EN 60730-1MaintenanceMaintenance-freeWeight1.8 kg incl. UNV-002 bracket (without valve) 17955 110 205 UNV-002 72 ENG-93001-93621-08.04-1M Printed in Switzerland ZSD Subject to technical modifications 21