Product Overview

ManualsBrandsSiemens ManualsControl ValvesMXF461 2-1/2" Modulating Control Flange Fitting Valve w/ Magnetic Actuator, 58 Cv

Siemens Building Technologies, Inc.

MXG461…U,

MXF461…U Series

Technical Instructions

Document No. CA1N4455E-P25

May 8, 2009

Modulating Control Valves with

Magnetic Actuators

Sval0016R1

Sval0015R1

MXG461…U MXF461…U

Description

Mixing or straight-through valves with magnetic actuators for modulating control of hot

and chilled water systems in closed circuits.

Features

• Fast positioning time (< two seconds), high-resolution stroke (1:1000).

• Linear or equal-percentage valve characteristic (user-selected).

• Switch-selectable control signal: 0 to 10 Vdc, 2 to 10 Vdc, or 4 to 20 mA.

• Wear-free inductive stroke measurement.

• Low friction, robust, no maintenance required.

• Fail-safe feature: A → AB closed when de-energized.

• Positioning control.

• Position feedback.

• Manual control.

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.

Summary of content (10 pages)

PAGE 1
Technical Instructions Document No. CA1N4455E-P25 May 8, 2009 MXG461…U, MXF461…U Series Sval0015R1 Sval0016R1 Modulating Control Valves with Magnetic Actuators MXG461…U MXF461…U Description Mixing or straight-through valves with magnetic actuators for modulating control of hot and chilled water systems in closed circuits. Features • Fast positioning time (< two seconds), high-resolution stroke (1:1000). • Linear or equal-percentage valve characteristic (user-selected).
PAGE 2
Technical Instructions Document Number CA1N4455E-P25 May 8, 2009 Application MXG461…U, MXF461…U Modulating Control Valves with Magnetic Actuators The MXG461...U (screwed fitting) and MXF461...U (flange fitting) valves are mixing or straight-through valves with a factory calibrated and mounted magnetic actuator. The magnetic actuator incorporates an electronics module for position control and positioning feedback. Control path A → AB is closed when the valve is de-energized.
PAGE 3
MXG461…U, MXF461…U Modulating Control Valves With Magnetic Actuators The valve control path (ports A → AB) can be opened mechanically up to 95% of the full stroke by pressing the handwheel inward and turning it clockwise (to the MANUAL position). This disables the control signal from the controller. To disable automatic control of the valve, press the handwheel inward and turn it counterclockwise (to the OFF position). The valve will close.
PAGE 4
Technical Instructions Document Number CA1N4455E-P25 May 8, 2009 MXG461…U, MXF461…U Modulating Control Valves with Magnetic Actuators Table 2. Water Flow Chart. Product Number Line Size (in) MXG461.15-0.6U MXG461.15-1.5U ΔPV100 PSI CVS 1 1/2 0.7 0.7 1 1.2 1.4 1.6 1.7 1.9 2.0 2.1 2.2 2.7 3.1 1/2 1.7 1.7 2.4 2.9 3.4 3.8 4.2 4.5 4.8 5.1 5.4 6.6 7.6 MXG461.15-30U 1/2 3.5 3.5 4.9 6.1 7 7.8 8.6 9.3 9.9 10.5 11 14 16 MXG461.20-50U 3/4 5.8 5.8 8.
PAGE 5
MXG461…U, MXF461…U Modulating Control Valves With Magnetic Actuators Mounting, Continued Technical Instructions Document Number CA1N4455E-P25 May 8, 2009 Only three-way MX.461...U valves are supplied. They may be used as straight-through normally closed valves by closing off port "B": Straight-through Valves Port "B" can be sealed with a Z155/65 blanking flange and gasket. B SVAL0008R1 BLANKING FLANGE Figure 4. MXF461...U Flanged Valves in Straight-through Applications.
PAGE 6
Technical Instructions Document Number CA1N4455E-P25 May 8, 2009 Specifications Electrical Interface Product Specific Data MXG461…U, MXF461…U Modulating Control Valves with Magnetic Actuators Power supply Supply voltage – Maximum voltage tolerance Control signal (user-selected) Software class Nominal power Position Signal Y Impedance 0 to 10 Vdc or 2 to 10 Vdc 4 to 20 mA Position feedback signal Class 2 24 Vac, 50/60 Hz +20/–15% 0 to 10 Vdc, 2 to 10 Vdc, or 4 to 20 mA Class A See Sizing 0 to 10 Vdc, 2
PAGE 7
MXG461…U, MXF461…U Modulating Control Valves With Magnetic Actuators Technical Instructions Document Number CA1N4455E-P25 May 8, 2009 WARNING: Wiring Terminals Earth ground must be connected to the pipe work. Sval0011R1 1 2 3 G0 G Y YM X YF 4 5 6 ~ 24 Vac 24 Vac Control signal input Control signal reference voltage 0 to 10 Vdc stroke signal output (position feedback) Override control Figure 6. Terminal Layout for Four-wire Connections. Wiring Diagram 24 VAC MX...461...
PAGE 8
Technical Instructions Document Number CA1N4455E-P25 May 8, 2009 MXG461…U, MXF461…U Modulating Control Valves with Magnetic Actuators Forced Control Feature (Input Terminal YF/6) 0 Vac (Bridge G0 – YF) Control path A → AB closed 24 Vac (Bridge G – YF) Control path A → AB open 1 to 9 Vdc at F Continuously variable low limit control 10% to 90% volume flow (the higher value YF of Y takes priority). This function is available with valves with a manufacturing date of 990701 or later.
PAGE 9
MXG461…U, MXF461…U Modulating Control Valves With Magnetic Actuators Technical Instructions Document Number CA1N4455E-P25 May 8, 2009 CAUTION: Service Do not disassemble the valve and actuator combination. This assembly is factorycalibrated, and should only be replaced by qualified personnel. Dimensions E m in . 100 All dimensions in inches (millimeters) F b AB A øk ød øD H m in . 100 Sval0009.eps L1 B L Table 4. MXF461…U – Flanged Valve with Electronics Module.
PAGE 10
Technical Instructions Document Number CA1N4455E-P25 May 8, 2009 MXG461…U, MXF461…U Modulating Control Valves with Magnetic Actuators E m in . 100 Dimensions, Continued All dimensions in inches (millimeters) 60433 F AB A B Sval0010R1 L2 L1 DA DI H m in . 100 L Table 5. MXG461…U –Valves with Electronics Module. Product Number DI DA L L1 L2 * H E F MXG461.15-0.6U 1/2 1 3.15 (80) 1.67 (42.5) 2.01 (51) 9.45 (240) 3.15 (80) 3.94 (100) lbs (kg) 8.4 (3.8) MXG461.15-1.