Siemens Building Technologies, Inc. MVF461H Series Technical Instructions Document No. 125-4361 June 17, 2008 Modulating Control Valves with Magnetic Actuators, Positioning Control and Position Feedback for Hot Water and Steam Description Control valves with magnetic actuators, for modulating control of hot water, high temperature hot water, and steam. Features • Fast positioning time (< 2 seconds) • Selectable valve characteristic: Equal percentage or linear • Selectable standard interface: 0/2 to 10 Vdc or 0/4 to 20 mA • High resolution (>1:1000) • High rangeability • Wear-free inductive stroke measurement • Spring return A → AB closed when de-energized • Positioning control and position feedback signal • Low-friction, heavy-duty and maintenance-free • Phase-cut signal input for Staefa controllers Product Numbers See Table 1. Warning/Caution Notations WARNING: Personal injury or loss of life may occur if you do not follow the procedures as specified. CAUTION: Equipment damage or loss of data may occur if you do not follow the procedures as specified. Application The MVF461H Series valves are through-port or mixing valves with magnetic actuators. The actuator is equipped with an electronics module for positioning control and position feedback. If the power is off, the valve control path A → AB is closed. The short positioning time, high resolution and high rangeability make these valves ideal for proportional control of district heating stations, and heating applications using high temperature hot water and steam. Technical Instructions MVF461H Series Modulating Control Valve Document Number 125-4361 with Magnetic Actuator June 17, 2008 Page 2 Siemens Building Technologies, Inc. Table 1. Product Numbers. Wire Gauge (AWG) Line Size Cv Δ p s Δ p v max S NA Pmed I N 16 14 12 Product Number (in) (psi) (psi) (VA) (W) Fuse L (ft) MVF461H15-0.6 1/2 0.7 145 145 33 15 3.15 130 215 360 MVF461H15-1.5 1/2 1.8 145 145 33 15 3.15 130 215 360 MVF461H15-3 1/2 3.5 145 145 33 15 3.15 130 215 360 MVF461H20-5 3/4 5.9 145 145 33 15 3.15 130 215 360 MVF461H25-8 1 9.4 145 145 33 15 3.15 130 215 360 MVF461H32-12 1-1/4 14.0 145 145 43 20 4 100 165 260 MVF461H40-20 1-1/2 23.3 145 145 65 20 6.3 100 165 260 MVF461H50-30 2 35.0 145 145 65 26 6.3 65 100 165 Key: Δ p v max = Maximum permissible differential pressure across the valve's control path, valid for the entire actuating range of the motorized valve (maximum recommended operating differential pressure). Δ p s = Maximum permissible differential pressure at which the motorized valve will close securely against the pressure (close-off pressure). S NA = Nominal apparent power for selecting the transformer. Pmed = Average true power. I N = Slow fuse (mandatory). Cv = Nominal flow rate of cold water [41°F to 86°F (5°C to 30°C)]. L = Maximum cable length. With four-wire connections the maximum permissible length of the separate 14 AWG Cu signal cable is 656 feet (200 m). Ordering The valve body and magnetic actuator assemblies cannot be separated. The assemblies can also be ordered with NPT flanges or weld flanges. To order with NPT flanges, add an “-N” suffix to the part number. To order with Weld Flanges, add a “-W” suffix to the part number. When placing an order, specify the quantity, product number and description. Examples: (without flanges) 1 MVF461H15-0.6 valve (with NPT flanges) 1 MVF461H15-0.6-N valve with NPT flanges (with weld flanges) 1 MVF461H15-0.6-W valve with weld flanges Accessory ASE12 Replacement Circuit Board Technical/ Mechanical Design Automatic Control The electronics module converts the positioning signal to a phase-cut power signal, which generates a magnetic field in the coil. This causes the armature to change its position according to the interacting forces (magnetic field, counterspring, hydraulics, etc.). The armature responds rapidly to any change in signal, transferring the corresponding movement directly to the valve plug. This enables fast changes in load to be corrected quickly and accurately. The valve’s position is measured continuously. Any disturbance in the system is rapidly corrected by the internal positioning controller, which ensures that the positioning signal and the valve stroke are exactly proportional, and also delivers the position feedback signal. MVF461H Series Modulating Control Valve Technical Instructions with Magnetic Actuator Document Number 125-4361 June 17, 2008 Siemens Building Technologies, Inc. Page 3 Control The magnetic actuator can be driven by any controller with a 0/2 to 10 Vdc or 0/4 to 20 mA output signal. To achieve optimum control performance, using a 4-wire connection for the valve is recommended. The controller’s signal ground terminal M must be connected to the valve’s terminal M. Terminals M and G0 have the same potential and are internally interconnected in the valve’s electronics. CAUTION: You must use a four-wire connection with Vdc power supply. Basic Diagram SSEN0335R1 Power Supply Power Control Micro Controller Stroke Control Hand Control Stroke Sensor Calib. M DIP-Switch ONON 12 ON 3 B-Mode G G0 Y U M Z X3 AMP Bus-Subprint Phs 0/4 to 20 mA 0/2 to 10 V 0/4 to 20 mA 0/2 to 10 V Phs Green / Red SPh 0 to 20 Vdc 1M Spring Return Action If the power or positioning signal is switched off or fails, the valve control path (port A → AB) is automatically closed by the force of the spring. Table 2. Indication of Operating State. LED Indication Operating State, Function Remarks, Troubleshooting Lit Control mode Normal operation; everything is OK. Green Flashing Calibration In manual control Wait until calibration is finished (green or red LED will be lit). Hand wheel in Man or Off position. Lit Calibration error Internal error Recalibrate (bridge contacts behind the calibration slot). Replace electronics module. Red Flashing Main fault DC Supply -/+ Check electric main network (outside the frequency or voltage range); Vdc supply +/- connection polarity. Both Dark No power supply Electronics faulty Check electric main network, check wiring Replace electronics module. Technical Instructions MVF461H Series Modulating Control Valve Document Number 125-4361 with Magnetic Actuator June 17, 2008 Page 4 Siemens Building Technologies, Inc. Manual adjustment Press (a) and turn the hand wheel (b): • clockwise (CW). Control path A → AB can be mechanically opened to between 80% and 90%, or • counterclockwise (CCW). The actuator will be switched off and the valve closed. As soon as the hand wheel is pressed and turned, neither the forced control signal Z, the input signal Y, nor the phase-cut signal acts on the actuator. The green LED will flash. For automatic control, the hand wheel must be set to the Auto position. The green LED will be lit. SSEN0336R1 Auto a b b ManOff Figure 1. Calibration If the electronics module is replaced or the actuator turned through 180°, the valve’s electronics must be recalibrated. To recalibrate, the hand wheel must be set to Auto. The printed circuit board has a slot (see Figure 2). Calibrate by bridging the contacts located behind the slot on the printed circuit board, using a screwdriver. The valve will then travel across the full stroke to store the end positions. While calibration is in progress, the green LED will flash for about 10 seconds (see Table 2. Indication of Operating State). SSEN0337R1 Figure 2. DIP Switches SSEN0338R1 2 to 10 V 4 to 20 mA ON OFF 0 to 10 V 0 to 20 mA mA V log V lin V Figure 3. Configuration DIP Switches. DIP Function OFF (Default)ON Remarks 1 ON OFF Voltage or current input [ V ] [ mA ] Assignment of terminal Y: Voltage or current 2 ON OFF Correcting span Terminals Y and U 0 to 10 Vdc, 0 to 20 mA 2 to 10 Vdc, 4 to 20 mA Offset settings of input and output 3 ON OFF Characteristic V log (equal percentage) V lin (linear) MVF461H Series Modulating Control Valve Technical Instructions with Magnetic Actuator Document Number 125-4361 June 17, 2008 Siemens Building Technologies, Inc. Page 5 DIP Switches, Continued SSEN0339R1 0 to 10 V2 to 10 V 0 to 20 mA4 to 20 mA Y ON OFF ON OFF ON OFF ON OFF Figure 4. Assignment of Positioning Signal Y: Voltage or Current. . SSEN0341R1 Y V Y V ON OFF ON OFF Figure 5. Selection of Valve Characteristic: Equal-Percentage or Linear. SSEN0340R1 0 to 10 V2 to 10 V 0 to 20 mA 4 to 20 mA ON OFF ON OFF U Ri > 500 Ri < 500 Figure 6. Assignment of Correct Span Y and U: 0 to 10 Vdc/0 to 20 mA or 2 to 10 Vdc/4 to 20 mA. Output signal U (position feedback signal) is dependent on the load resistance. Above 500 ohm, it is automatically a voltage signal; below 500 ohm a current signal. Forced Control Input Transfer Connections SSEN0342R1 100 % 0 %Y 0 %100 % 100 % 0 %Y 0 %100 % Y 0 %100 % 100 % 0 % No FunctionFully Open Z-mode Closed U G0 Y M U G Y U Z G0 G Y M AABAAB AAB Z M G Z VV V G0 Figure 7. If terminal Z for the forced control input is: − not connected, the valve will follow the Y-signal or the phase-cut signal. − connected to G, the valve will fully open via control path A → AB. − connected to G0, the valve will close via control path A → AB. Signal Priority 1. Hand wheel position Man or Off 2. Forced control signal Z 3. Phase-cut signal 4. Signal input Y Technical Instructions MVF461H Series Modulating Control Valve Document Number 125-4361 with Magnetic Actuator June 17, 2008 Page 6 Siemens Building Technologies, Inc. Characteristic SSEN0343R1 10 [V] 10 [V] 20 [mA] 86420 2 4 100 80 60 40 20 0 [%] 90063 6 12 V Figure 8. Equal Percentage. SSEN0344R1 10 [V] 10 [V] 20 [mA] 86420 2 4 100 80 60 40 20 0 [%] 90064 6 12 V Figure 9. Linear. Installation Notes • Installation instructions for the valve and terminal housing are enclosed with the valve. • For electrical installation, see Wiring Diagrams. CAUTION : • Always disconnect the power before fitting or removing the terminal housing. The terminal housing is calibrated and matched to the actuator, and should be replaced only by qualified personnel. • Valve may only be used in flow direction (A → AB). Note the flow direction. • Do not allow the surface temperature of the actuator to fall below the dew point temperature of the surrounding air (causing condensation). If necessary, insulate the valve. Do not insulate the actuator. Mounting Position Vertical to horizontal mounting: Do not mount the valve below horizontal. SSEN0345R1 90 90 IP31IP31 Figure 10. Acceptable Mounting Positions. Specifications Electrical Low-voltage use only Class 2 (SELV, PELV) 24 Vac Operating voltage 24 Vac +20/-15% Frequency 45 to 65 Hz Typical power consumption See Table 1, P med Standby <1 W (valve fully closed) Nominal apparent power See Table 1, S NA Suitable fuse Slow, see Table 1, I N 24 Vdc Operating voltage 20 to 30 Vdc MVF461H Series Modulating Control Valve Technical Instructions with Magnetic Actuator Document Number 125-4361 June 17, 2008 Siemens Building Technologies, Inc. Page 7 Specifications, Continued Functional data of actuator Input Positioning signal Y 0/2 to 10 Vdc, 0/4 to 20 mA, or 0 to 20 Vdc Phs Impedance 0/2 to 10 Vdc 100K ohm//5nF 0/4 to 20 mA 240 ohm//5nF Forced control Impedance 22K ohm Closing the valve (Z connected to G0) <1 Vac; <0.8 Vdc Opening the valve (Z connected to G0) >6 Vac; >5 Vdc No function (Z not wired) Phase-cut or positioning signal Y active Output Position feedback signal voltage 0/2 to 10 Vdc; load resistance > 500Ω current 0/4 to 20 mA; load resistance < 500Ω Stroke measurement Inductive Nonlinearity +3% of end value Functional data of valve Nominal pressure ANSI 125 (PN 16) Permissible Operating pressure 1) Water up to 248°F (120°C): 232 psi (16 bar) Water above 248°F (120°C): 188 psi (13 bar) Saturated steam: 130 psi (9 bar) Pressure differential Δ p max / Δ p s 145 psi (10 bar) Leakage at Δ p = 0.1 MPa (1 bar) A → AB Maximum 0.05% C V Media temperature 34°F to 356°F (>1°C to 180°C) Valve characteristic 2) Equal percentage or linear, optimized near the closing point Resolution Δ H/H 100 1:1000 (H = Stroke) Type of operation Modulating Position when de-energized A → AB closed Orientation: Upright to horizontal Positioning time < 2 seconds Materials Valve body Modular cast iron Cover flange Modular cast iron Seat/Inner valve Stainless Steel Valve stem seal EPDM (O-ring) Electrical connections Cable entries 3 × M20 × 1.5 or PG13.5/G1/2 Connection terminals Screw terminals for up to 12 AWG wires Min. cross-sectional area 3) 0.75 mm 2 Max. cable length See Table 1 Ambient conditions Temperature Operation and storage 23°F to 113°F (-5°C to 45°C) Transport -13°F to 158°F (-25°C to 70°C) Humidity 5 to 95% rh (non-condensing) 1. Tested at 1.5 × PN (24 bar), similar to DIN 3230-3. 2. Can be selected via DIP switch. 3. In case of strong vibrations, use high-flex stranded wires. Technical Instructions MVF461H Series Modulating Control Valve Document Number 125-4361 with Magnetic Actuator June 17, 2008 Page 8 Siemens Building Technologies, Inc. Specifications, Continued Agency approvals Degree of protection IP31 to IEC 529 Canadian registration number 0C12337.5 Conforms to CE requirements UL 873 Certified to Canadian standard C22.2 No. 24 C-Tick N-474 PED 97/23/EC: pressure-carrying parts Par. 1, section. 2.1.4/Par. 3, section 3 Fluid group 2 Miscellaneous Weight See Figure 15 Dimensions See Figure 15 Connection Terminals WARNING: If the controller and the valve receive their power supply from separate sources, the valve transformer must not be grounded on the secondary side. A four-wire connection is mandatory with DC power supply. Controllers with: 0 to 10 Vdc 2 to 10 Vdc 0 to 20 mA 4 to 20 mA SSEN0346R1 G0 G F Controller Transformer AC/DC 24 V Operating voltage U U Z G0 G Y M 0 to 10Vdc / 2 to 10Vdc 0 to 20 mA / 4 to 20 mA Y M 0 to 10Vdc / 2 to 10Vdc 0 to 20 mA / 4 to 20 mA System neutral (SN) Control signal System potential (SP) Measuring neutral (= G0) Positioning feedback signal Override input Figure 11. Controllers with phase-cut 0 to 20 Vdc SSEN0347R1 G0 G F Controller Transformer U U Z G0 G Y M 0 to 20Vdc Phase-cut signal AC/DC 24 V Operating voltage 0 to 10Vdc / 2 to 10Vdc 0 to 20 mA / 4 to 20 mA 0 to 10Vdc / 2 to 10Vdc 0 to 20 mA / 4 to 20 mA System neutral (SN) Control signal System potential (SP) Measuring neutral (= G0) Positioning feedback signal Override input Figure 12. MVF461H Series Modulating Control Valve Technical Instructions with Magnetic Actuator Document Number 125-4361 June 17, 2008 Siemens Building Technologies, Inc. Page 9 This example shows only a schematic diagram, without installation-specific details. Application Examples CAUTION: Valve may only be used in flow direction (A → AB). Note the flow direction. SSEN0119R1 Figure 13. Direct Heating (Supply) System, Indirect Connection. SSEN0120R1 Figure 14. Direct Heating (Supply) System, Directly connected to Water- Heating System. Service CAUTION: Do not disassemble the valve and actuator combination. This assembly is factory-calibrated, and should only be replaced by qualified personnel. Always disconnect power before fitting or removing the electronics module. • The low-friction and robust, maintenance-free design makes regular servicing unnecessary and ensures a long service life. • The valve stem is sealed from external influences by a maintenance-free gland. • If the red LED is lit, the electronics must be recalibrated or replaced. • If the valve electronics are faulty, they must be replaced. After replacing the electronics, they must be recalibrated. See Calibration. • If required, the circuit board can be replaced. Order Part Number ASE12. Technical Instructions MVF461H Series Modulating Control Valve Document Number 125-4361 with Magnetic Actuator June 17, 2008 Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and models as design improvements are introduced. Other product or company names mentioned herein may be the trademarks of their respective owners. © 2005 Siemens Building Technologies, Inc. Siemens Building Technologies, Inc. 1000 Deerfield Parkway Buffalo Grove, IL 60089-4513 U.S.A. Your feedback is important to us. If you have comments about this document, please send them to sbt_technical.editor.us.sbt@siemens.com.com Document No. 125-4361 Country of Origin: US Page 10 Dimensions SSEN0348R1 A AB L ł K ł D B H F min. 3.94 (100) ł D2 ł E 1.97 ł 50 Figure 15. Dimensions in Inches (Millimeters). Product Number DN L ØD ØD2 B ØK H ØE F W lb (kg) MVF461H15-0.6 15 5.12 (130) 3.74 (95) 0.16×0.55 (4×14) 0.55 (14) 2.56 (65) 13.4 (340) 3.15 (80) 4.53 (115) 18.3 (8.3) MVF461H15-1.5 15 5.12 (130) 3.74 (95) 0.16×0.55 (4×14) 0.55 (14) 2.56 (65) 13.4 (340) 3.15 (80) 4.53 (115) 18.3 (8.3) MVF461H15-3 15 5.12 (130) 3.74 (95) 0.16×0.55 (4×14) 0.55 (14) 2.56 (65) 13.4 (340) 3.15 (80) 4.53 (115) 18.3 (8.3) MVF461H20-5 20 5.91 (150) 4.13 (105) 0.16×0.55 (4×14) 0.63 (16) 2.95 (75) 13.3 (339) 3.15 (80) 4.53 (115) 19.6 (8.9) MVF461H25-8 25 6.30 (160) 4.53 (115) 0.16×0.55 (4×14) 0.63 (16) 3.35 (85) 13.6 (346) 3.15 (80) 4.53 (115) 22.1 (10.0) MVF461H32-12 32 7.09 (180) 5.51 (140) 0.16×0.71 (4×18) 0.71 (18) 3.94 (100) 15.12 (384) 3.94 (100) 4.92 (125) 34.6 (15.7) MVF461H40-20 40 7.87 (200) 5.91 (150) 0.16×0.71 (4×18) 0.71 (18) 4.33 (110) 15.79 (401) 3.94 (100) 4.92 (125) 39.2 (17.8) MVF461H50-30 50 9.05 (230) 6.50 (165) 0.16×0.71 (4×18) 0.79 (20) 4.92 (125) 17.58 (449) 4.92 (125) 5.43 (138) 60.0 (27.2) Next >