Data Sheet for Product

ManualsBrandsSiemens ManualsMagnetic (BC2)Modulating control valves, PN16, MXG461B.., MVF461H..

CE1N4361en

2018-02-05

Building Technologies

361

Modulating control valves

with magnetic actuator,

PN 16

MVF461H..

for hot water, high temperature hot water and steam

∂ Short positioning time (<2 s), high resolution (1 : 1000)

∂ Selectable valve characteristic: Equal-percentage or linear

∂ High rangeability

∂ Selectable standard interface DC 0/2...10 V or DC 0/4...20 mA

∂ Phase-cut signal input for Staefa controllers

∂ Position control and position feedback signal

∂ Wear-free inductive stroke measurement

∂ Spring return facility: A ↑ AB closed when deenergized

∂ Low friction, robust and maintenance-free

Use

The MVF461H..valve types are through-port control valves with fitted magnetic

actuator. The actuator is equipped with connecting electronics for positioning control

and position feedback. When deenergized, the valve is closed.

The short positioning time, high resolution and high rangeability make these valves

ideal for proportional control of district heating stations and heating plant using HTHW

and steam. For closed circuits only.

Summary of content (14 pages)

PAGE 1
4 361 Modulating control valves MVF461H.. with magnetic actuator, PN 16 for hot water, high temperature hot water and steam ∂ ∂ ∂ ∂ ∂ ∂ ∂ ∂ ∂ Short positioning time (<2 s), high resolution (1 : 1000) Selectable valve characteristic: Equal-percentage or linear High rangeability Selectable standard interface DC 0/2...10 V or DC 0/4...
PAGE 2
Type summary Type reference DN kVS 3 [m /h] [kPa] ΧpS [kPa] Operating voltage Spring return Positioning signal time DC 0...10 V or DC 2…10 V or DC 0…20 mA or DC 4...20 mA <2s 0.6 MVF461H15-0.6 MVF461H15-1.5 Χpmax 15 1.5 3 MVF461H15-3 MVF461H20-5 20 5 MVF461H25-8 25 8 MVF461H32-12 32 12 MVF461H40-20 40 20 MVF461H50-30 50 30 1000 1000 AC / DC 24 V  Χpmax = max.
PAGE 3
Manual control By pressing (a) and turning (b) the hand wheel ∂ in clockwise (CW) direction, control path A ↑ AB can be mechanically opened to between 80 and 90 % ∂ in counterclockwise (CCW) direction, the actuator will be switched off and the valve closed a Man Off b Auto b As soon as the hand wheel is pressed and turned, neither the forced control signal Z nor the input signal Y or the phase-cut signal acts on the actuator. The green LED will flash.
PAGE 4
Selection valve characteristics Equal-percentage or linear ON OFF OFF Ri > 500 ς 0...10 V 2...10 V Ri < 500 ς 0...20 mA 4...20 mA ON ON OFF OFF . V Output signal U (position feedback signal) is dependent on the load resistance Ri. Ri > 500 ς, ⇓ voltage signal Ri < 500 ς, ⇓ current signal 4461Z23 U ON . V Y Y 4461Z24 Selection positioning range Y and U: 0...10 V / 0…20 mA or 2...10 V / 4...
PAGE 5
Indication of operating state LED Indication Function Remarks, troubleshooting Green Lit Control mode Normal operation; everything o.k.
PAGE 6
Saturated steam flow chart 4361D02 pv p 100 [%] 1 MVF461H... 0, k VS b 6 1, k VS 5 5 k VS 3 k VS 1 8 k VS k VS 2 3 20 k VS k VS 0 a 0,42 0,30 0,20 0,15 0,10 0,05 100 200 300 500 1 2 3 5 3 1000 [k Pa] 7 10 4 5 7 101 2 3 4 5 7 102 2 3 4 5 7 103 2 3 [k g /h ] . [b ar] m p1 For saturated steam and superheated steam the differential pressure Χpmax across the valve should be close to the critical pressure ratio.
PAGE 7
Water flow chart 4361D01 100 20 MVF461H... DN 20 DN DN 7 DN . V 100 [m 3 / h ] 10 5 4 DN 3 DN 2 D 1 0,7 D 0,5 50 40 32 25 k VS k VS k VS k VS k VS k VS 20 15 5 N1 30 10 20 12 5 4 8 3 5 2 7 3 1 0 ,7 . 30 k 1 ,5 VS 0 ,5 0 ,4 0 ,3 k 5 N1 0 ,6 0 ,2 p max.
PAGE 8
Connection type 1) The 4-wire connection should always be given preference! Type reference 4-wire connection Wire cross-section [mm2] SNA PMED STR PTR IF [VA] [W] [VA] [W] [A] 33 15 ″50 ″50 3.15 60 100 160 43 20 ″75 4 40 70 120 6.3 30 50 80 1,5 2,5 4,0 max. cable length L [m] MVF461H15-0.6 MVF461H15-1.
PAGE 9
Disposal The device is considered electrical and electronic equipment for disposal in terms of the applicable European Directive and may not be disposed of as domestic garbage. ∂ Dispose of the device through channels provided for this purpose. ∂ Comply with all local and currently applicable laws and regulations. Warranty Application-specific technical data must be observed. If specified limits are not observed, Siemens will not assume any responsibility.
PAGE 10
Functional data of valve Pressure class Permissible operating pressure 1) Differential pressure Χpmax / ΧpS Leakage rate at Χp = 0.
PAGE 11
General environmental conditions Operation EN 60721-3-3 Transport EN 60721-3-2 Storage EN 60721-3-1 Climatic conditions Temperature Class 3K5 -5...+45 °C Class 2K3 -25...+70 °C Class 1K3 -5...+45 °C Humidity 5...95 % r.h. 5...95 % r.h. 5...95 % r.h.
PAGE 12
Controllers with phase-cut DC 0...20 V Phs Common Transformer Separate Transformer – G – G G U U Application examples The examples shown below are basic diagrams with no installation-specific details. 9H808 A 9H807 A District heating (supply heating) system, indirect connection. Caution District heating (supply heating) system, directly connected to water-heating system The valve may only be used in flow direction (A ⇓ AB).
PAGE 13
Dimensions Flange dimensions to DIN2533, PN16 Type reference DN L [mm] øD ø D2 B øK H øE F [mm] [mm] [mm] [mm] [mm] [mm] [mm] Weight [kg] MVF461H15-0.6 15 130 95 4x14 14 65 340 80 115 8,3 MVF461H15-1.
PAGE 14
Revision numbers Type reference Valid from rev. No. MVF461H15-0.6 ..C MVF461H15-1.5 ..C MVF461H15-3 ..C MVF461H20-5 ..B MVF461H25-8 ..B MVF461H32-12 ..B MVF461H40-20 ..C MVF461H50-30 ..B Issued by Siemens Switzerland Ltd Building Technologies Division International Headquarters Gubelstrasse 22 6301 Zug Switzerland Tel. +41 58-724 24 24 www.siemens.com/buildingtechnologies © Siemens Switzerland Ltd, 2010 Technical specifications and availability subject to change without notice.