Data Sheet for Product

ManualsBrandsSiemens ManualsMagnetic (BC2)Stetige Regelventile, PN16, MXG461S..

CA1N4465en

2018-02-05

Building Technologies

465

ACVATIX™

Modulating control valves

with magnetic actuator‚

PN 16

MXG461S..

stainless steel

∂ Fast positioning time (<2 s), high-resolution stroke (1 : 1000)

∂ Selectable valve characteristic: equal-percentage or linear

∂ High rangeability

∂ Operating voltage AC/ DC 24 V

∂ Switch-selected control signal DC 0/2...10 V or DC 4...20 mA

∂ Wear-free inductive stroke measurement

∂ Robust, no maintenance required

∂ Spring-return function: A ↑ AB closed when de-energized

∂ Positioning control, position feedback and manual control

∂ Parts in contact with medium in CrNi steel

∂ Applications with demineralized water upon request

Use

The control valves MXG461S.. are mixing or through-port valves. They are supplied with

the magnetic actuator ready fitted, equipped with an electronics module for position

control and position feedback.The short positioning time, high resolution and high

rangeability make these valves ideal for modulating control of open and closed circuits

with the highest control requirements.

Summary of content (12 pages)

PAGE 1
4 465 ACVATIX™ Modulating control valves with magnetic actuator‚ PN 16 MXG461S.. stainless steel ∂ ∂ ∂ ∂ ∂ ∂ ∂ ∂ ∂ ∂ ∂ Fast positioning time (<2 s), high-resolution stroke (1 : 1000) Selectable valve characteristic: equal-percentage or linear High rangeability Operating voltage AC/ DC 24 V Switch-selected control signal DC 0/2...10 V or DC 4...
PAGE 2
Type summary Type reference DN Connection kVS Χpmax ΧpS [inch] 3 [kPa] [kPa] signal time Spring return function 300 DC 0...10 V or DC 2...10 V or DC 4...20 mA <2 s  [m /h] MXG461S15-1.5 15 G 1B 1.5 MXG461S20-5.0 20 G 1¼B 5.0 MXG461S25-8.0 25 G 1½B 8.0 MXG461S32-12 32 G 2B 12 DN kvs Χpmax Χps Accessory 300 Operating voltage AC / DC 24 V Positioning = Nominal size.
PAGE 3
MANUAL The valve control path (ports A ↑ AB) can be opened manually to between 80...90 % of the full stroke (depending on DN) by pressing the hand wheel inwards and turning it clockwise (MANUAL setting). This disables the control signal from the controller, the green LED is flashing. OFF AUTO MANUAL 4455Z03 Manual control OFF To disable automatic control of the valve, press the hand wheel inwards and turn it anti-clockwise (to the OFF position). The valve will close, the green LED is flashing.
PAGE 4
Selection of valve characteristic (Positioning signal against volumetric flow): Equal-percentage or linear Selection of positioning signal Y: Voltage or current Forced control input YF – Function fully open closed Function Transfer Connection no function Signal priority ∂ YF not wired ∂ Valve follows Y signal ∂ YF connected with G ∂ Valve fully opens above A ⇓ AB ∂ YF connected with G0 ∂ Valve closes above A ⇓ AB 1. Hand wheel position MANUAL (open) or OFF (closed) 2.
PAGE 5
Calibration The MXG461S.. magnetic valves are factory-calibrated at 0 % and 100 % stroke. When commissioning the valves, however, (especially under extreme conditions of use) there may still be some leakage via control path A ↑ AB with a 0 % stroke control signal (DC 0 V, DC 2 V or DC 4 mA). In this case, the valve can be recalibrated simply and quickly: 1. Set hand wheel [2] in AUTO-position. 2. Activate calibration using a pointed pin (ø 2 mm) by pressing the button in the opening [3] once. 3.
PAGE 6
Sizing Flow chart Χpv100 = differential pressure across the fully open valve and the valve’s control path by a volume flow V100 V100 = volumetric flow with valve fully open (H 100) Χpmax = maximum permissible differential pressure across the valve’s control path, valid for the entire actuating range of the motorized valve (mixing: path A-AB, B-AB) 100 kPa = 1 bar ≡ 10 mWC 3 1 m /h Equal percentage Linear Volumetric flow Volumetric flow 4455D02 [%] [%] 100 100 80 80 60 60 40 40 20 20
PAGE 7
Connection type 1) The 4-wire connection should always be given preference! Type reference 4-wire connection SNA PMED STR PTR IF [VA] [W] [VA] [W] [A] 29 5 ″50 ″30 3.15 wire cross-section [mm2] 1.5 2.5 4.0 max. cable length L [m] MXG461S15-1.5 MXG461S20-5.0 MXG461S25-8.
PAGE 8
Use as straight-through valves Only three-way MXG461S.. valves are supplied. They may be used as straight-through valves by closing off port «B». MXG461S.. threaded valves in straightthrough applications Close off port B with a union fitting. A CrNi-Steel seal disc with 3 gaskets is part of the delivery. 4455Z13 Union fittings conforming to ISO 49 / DIN 2950 must be supplied by the installer. Installation notes ∂ ∂ ∂ ∂ Do not use hemp for sealing the valve body threads.
PAGE 9
Technical data Functional actuator data Power supply Input Output Positioning time Electrical connections Functional data valve Extra low-voltage only AC / DC 24 V ±20 % (SELV, PELV) or AC / DC 24 V ±20 % class 2 (US) Frequency 45...65 Hz Typical power consumption PMED Refer to table " Connection type ", page 7 Stand by <2 W (valve closed) Apparent power SA 29 VA Min.
PAGE 10
Materials Dimensions / weight Standards, directives and approvals Degree of protection Environmental compatibility Valve body Seat, inner valve, plug Entire inner suit Valve stem seal Dimensions Weight Threaded connection Product standard x As per EMC directive CrNi high-grade steel cast (no. 1.
PAGE 11
Connection terminals AC / DC 24 V operating System neutral voltage System potential Positioning signal DC 0...10 V / 2...10 V / 4...20 mA Measuring neutral (= G0) Position feedback signal DC 0...10 V Force control input R = Inner resistance between G0 and YM, approx 10 kΩ Connection diagrams Caution If controller and valve receive their power from separate sources, only one transformer may be earthed on the secondary side.
PAGE 12
Dimensions Dimensions in mm E F 4455M01 H min. Threaded MXG461S.. valves with electronics housing AB A L4 B L3 G Rp H2 H min. L2 L1 Type reference DN Rp G [Inch] [Inch] L1 L2 L4 H2 H E F kg [kg] min. MXG461S15-1.5 15 Rp ½ G 1B 80 MXG461S20-5.0 20 Rp ¾ G 1¼B 95 MXG461S25-8.0 25 Rp 1 G 1½B 110 MXG461S32-12 32 Rp 1¼ G 2B 125 ∂ ∂ ∂ L3 * 42.5 51 240 47.5 52.5 40 61 260 56.5 65 270 62.5 67.5 76 285 55 Externally threaded G...