User Manual

ManualsBrandsSiemens ManualsMagnetic (BC2)Modulating control valves, PN16, MXG461..M, MXF461..M

CA1N4455en

15.12.2009

Building Technologies

455

MXG461..

MXG461..P

MXF461..

MXF461..P

CVATIX™

Modulating control valves

with magnetic actuators,

PN16

MXG461..

MXG461..P

MXF461..

MXF461..P

for chilled and low-temperature hot water systems or

for systems with media containing mineral oils (MX..461..P)

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

 Equal-percentage or linear valve characteristic (user-selected)

 Operating voltage AC 24 V

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

 DC 0…20 V phase cut control signal with SEZ91.6 external interface

 Indication of operating state, position feedback and manual control

 Wear-free inductive stroke measurement

 Fail-safe feature: A AB closed when de-energized

 Low friction, robust, no maintenance required

Use

The control valves are mixing or throughport valves with the ready fitted magnetic

actuator for position control and position feedback. The short positioning time, high

resolution and high rangeability make these valves ideal for modulating

 control of chilled and low-temperature hot water systems

 control or dosing control of fluids containing mineral oil (SAE05...SAE50), mineral-oil-

based diesel fuels, heat transfer oils

in closed circuits.

Special silicon-free version available, type suffix ..M.

Summary of content (14 pages)

PAGE 1
4 MXG461.. MXF461.. MXG461..P MXF461..P 455 ACVATIX™ MXG461.. MXG461..P MXF461.. MXF461..P Modulating control valves with magnetic actuators, PN16 for chilled and low-temperature hot water systems or for systems with media containing mineral oils (MX..461..P)          Fast positioning time (< 2 s), high-resolution stroke (1 : 1000), high rangeability Equal-percentage or linear valve characteristic (user-selected) Operating voltage AC 24 V Switch-selected control signal DC 0/2...
PAGE 2
    Application examples MX..461..P Temperature control in mixing circuits for motor oil circulation Temperature control in mixing circuits for screw-compressors (compressed air) Temperature control of fuel circuits in mixing circuits for petrol and diesel oil High pressure control for the calibration of components for electronic injection components  Control of cutting-oil emulsion for industrial grinding machines Type summary Type reference MX..461.. DN MX..461..
PAGE 3
Replacement electronics module ASE1, ASE2 Should the valve electronics prove faulty, the electronics module must be replaced by the ASE1 (DN15…32) or ASE2 (DN40…65) replacement electronics module. Mounting Instructions no. 35678 are included. Rev. no. See overview, page 14. Technical and mechanical design For a detailed description of operation, refer to data sheet CA1N4028E.
PAGE 4
Operator controls and indicators in the electronics housing 1 YF X YM Y 4455Z02 G G0 1 Connection terminals 2 Hand wheel 3 Opening for autocalibration 4 DIL switch for mode control 2...10V 4...20mA 2 V 3 ON 4 ON V 5 V LED for indication of operating stat 4461Z28 5 0...10V ok green calib. / Man error calib. red error Switch Configuration DIL switches Function ON / OFF ON Description . ON V log (equal percentage) OFF V lin (linear) 1) ON DC 2...10 V, DC 4...20 mA OFF DC 0.
PAGE 5
Forced control input YF YF – Function Connections fully open closed G0 G0 G0 G G G Y Y Y YM YM YM X X X YF YF YF V A V A AB 100 % V A AB 4455Z10 no function AB 100 % Transfer 100 % Function 0% 0% Y 100 % 0% 0% Y 100 % 0% 0% Y 100 %  YF not connected  YF connected to G  YF connected to G0  valve will follow the Y-signal  valve will fully open control path A  AB  valve will close control path A  AB Signal priority 1.
PAGE 6
Indication of operating state The two-color LED display indicating operating status can be viewed by opening the cover of the electronics module. LED Green Indication Lit Function Control mode Remarks, troubleshooting Automatic operation; everything o.k.
PAGE 7
> 10 mm2/s Kinematic viscosity  [mm2/s] in HVAC plants always is lower than 10 mm2/s, i.e. its influence on volume flow is negligible. For details please contact your local Siemens branch office. Valve characteristic Equal percentage Linear Volumetric flow Volumetric flow [%] [%] 100 100 80 80 60 60 40 40 20 20 y 0 0 2 4 6 8 10 [V] 4455D03 Kinematic viscosity ≤ 10 mm2/s Viscosity may change considerably on temperature changes depending on the medium.
PAGE 8
Mounting notes Mounting and operating instructions are printed on the actuator and on the electronics module. Caution The valve may only be used as a mixing or throughport valve, not as a diverting valve. Observe the direction of flow! A strainer should be fitted upstream of the valve. This increases reliability.
PAGE 9
If the valve electronics prove faulty, the electronics module must be replaced by the ASE1 (DN15…32) or ASE2 (DN40…65) replacement electronics module. Mounting instructions no. 35678 are included. Repair Caution Always disconnect power before fitting or removing the electronics module. After replacing the electronics module, calibration must be triggered in order to optimally match the electronics to the valve (refer to "Calibration", page 5).
PAGE 10
Functional valve data PN class Permissible operating pressure Differential pressure pmax / pS Leakage rate at p = 0.1 MPa (1 bar) Valve characteristic 1) Permissible media MX..461.. MX..461..P Materials Dimensions / weight Norms and standards Medium temperature Stroke resolution H / H100 Hysteresis Position when deenergized Mounting position Mode of operation Manual operation Valve body Plug Seat Valve stem seal MX..461.. MX..461..
PAGE 11
General environmental conditions Operation EN 60721-3-3 MX..461.., MX..461..P Climatic conditions Temperature Humidity Mechanical conditions Transport EN 60721-3-2 Storage EN 60721-3-1 Class 3K5 Class 2K3 Class 1K3 -5...+45 °C -25...+70 °C -5...+45 °C 5...95 % r.h. 5...95 % r.h. 5...95 % r.h. EN 60721-2 EN 60721-2 Class 2M2 Class 2M2 EN 60721-3-6 Class 6M2 EN 60721-3-3 MX..461..
PAGE 12
Warning Piping must be connected to potential earth! DIL switch Factory setting: Valve characteristics equal-percentage, positioning signal DC 0...10 V. Details see "Configuration DIL switches", page 4. Calibration See "Calibration", page 5. Application examples The valve may only be used as a mixing or through-port valve, not as a diverting valve.
PAGE 13
Type reference DN Rp G [inch] [inch] L1 L2 L3 L4 H2 15 Rp ½ G1B 80 MXG461.20-5.0 20 Rp ¾ G 1¼B 95 MXG461.25-8.0 25 Rp 1 G 1½B 110 MXG461.32-12 32 Rp 1¼ G 2B 125 MXG461.40-20 40 Rp 1½ G 2¼B 140 70 80.5 94 320 MXG461.50-30 50 Rp 2 G 2¾B 170 85 93.5 109 340 H E F Weight [kg] min. MXG461.15-0.6 MXG461.15-1.5 40 42.5 51 240 47.5 52.5 61 260 56.5 65 270 62.5 67.5 76 285 MXG461.15-3.0      Remarks: 55 3.8 100 80 100 4.2 4.7 5.6 9.
PAGE 14
Revision numbers Type reference Valid from Type reference manufact. date Valid from Type reference manufact. date Valid from Type reference manufact. date Valid from manufact. date MXG461.15-0.6 12/09 1) MXG461.15-0.6P 12/09 1) MXG461.15-0.6M 12/09 1) MXG461.15-0.6U 12/09 1) MXG461.15-1.5 12/09 1) MXG461.15-1.5P 12/09 1) MXG461.15-1.5M 12/09 1) MXG461.15-1.5U 12/09 1) MXG461.15-3.0 12/09 1) MXG461.15-3.0P 12/09 1) MXG461.15-3.0M 12/09 1) MXG461.15-3.0U 12/09 1) MXG461.