Data Sheet for Product

ManualsBrandsSiemens ManualsControl ValvesMXG461 1" Modulating Control Screwed Fitting Valve w/ Magnetic Actuator, 9.3 Cv

Siemens Industry, Inc.

MXG461…U,

MXF461…U Series

Technical Instructions

Document No. CA1N4455E-P25

October 19, 2020

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).

• 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 (11 pages)

PAGE 1
Technical Instructions Document No. CA1N4455E-P25 October 19, 2020 MXG461…U, MXF461…U Series 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
MXG461…U, MXF461…U Modulating Control Valves with Magnetic Actuators Technical Instructions Document Number CA1N4455E-P25 October 19, 2020 Application 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 Manual Control Technical Instructions Document Number CA1N4455E-P25 October 19, 2020 The valve control path (ports A → AB) can be opened mechanically up to 90% 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, and the green LED will flash.
PAGE 4
MXG461…U, MXF461…U Modulating Control Valves with Magnetic Actuators Technical Instructions Document Number CA1N4455E-P25 October 19, 2020 Table 2. Water Flow Chart. Product Number Line Size (in) MXG461.15-0.6U MXG461.15-1.5U PV100 PSI CVS 1 2 3 4 5 6 7 8 9 10 15 20 30 1/2 0.7 1/2 1.7 MXG461.15-30U 1/2 MXG461.20-50U 3/4 MXG461.25-8.0U MXG461.32-12U MXG461.40-20U 0.7 1 1.2 1.4 1.6 1.7 1.9 2.0 2.1 2.2 2.7 3.1 1.7 2.4 2.9 3.4 3.8 4.2 4.5 4.8 5.1 5.4 6.6 7.
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MXG461…U, MXF461…U Modulating Control Valves With Magnetic Actuators Mounting, Continued Technical Instructions Document Number CA1N4455E-P25 October 19, 2020 Only three-way MXG461...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 the accessories supplied (blanking disk, gasket, and the nut). No blanking flange is available for MXF461.65-50U. Figure 4. MXG461...
PAGE 6
Technical Instructions Document Number CA1N4455E-P25 October 19, 2020 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 Vd
PAGE 7
MXG461…U, MXF461…U Modulating Control Valves With Magnetic Actuators Wiring Terminals Technical Instructions Document Number CA1N4455E-P25 October 19, 2020 WARNING: Earth ground must be connected to the pipe work. 24 Vac 24 Vac Control signal input Control signal reference voltage 0 to 10 Vdc stroke signal output (position feedback) Override control Figure 5. Terminal Layout for Four-wire Connections. Wiring Diagram Figure 6. Connection to Controller with Four-wire Output.
PAGE 8
MXG461…U, MXF461…U Modulating Control Valves with Magnetic Actuators Technical Instructions Document Number CA1N4455E-P25 October 19, 2020 1 2 3 4 Operator Controls and Indicators in the Electronics Housing Connection terminals Hand wheel Opening for autocalibration DIP switch for mode control Figure 7. Housing Components. ok green 4461Z28 5. LED for indication of operating stat calib. / Man error calib. red error Configuration DIP Switches Switch Function ON/OFF Description .
PAGE 9
MXG461…U, MXF461…U Modulating Control Valves With Magnetic Actuators Calibration Technical Instructions Document Number CA1N4455E-P25 October 19, 2020 The MX…461…P magnetic valves are factory-calibrated at 0% and 100% stroke. When commissioning the valves (especially under extreme usage conditions) there may still be some leakage via control path A → AB with a 0% stroke control signal (0 Vdc, 4 mA or 2 Vdc).
PAGE 10
MXG461…U, MXF461…U Modulating Control Valves with Magnetic Actuators Technical Instructions Document Number CA1N4455E-P25 October 19, 2020 CAUTION: Service Do not disassemble the valve and actuator combination. This assembly is factorycalibrated and should only be replaced by qualified personnel. Dimensions All dimensions in inches (millimeters) Table 4. MXF461…U – Flanged Valve with Electronics Module. Product Number L L1 MXF461.65-50U 11.42 (290) 4.
PAGE 11
MXG461…U, MXF461…U Modulating Control Valves With Magnetic Actuators Technical Instructions Document Number CA1N4455E-P25 October 19, 2020 Dimensions, Continued All dimensions in inches (millimeters) Table 5. MXG461…U –Valves with Electronics Module. Product Number DI DA L L1 L2 * H E F lbs (kg) 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) 8.4 (3.8) MXG461.15-1.5U 1/2 1 3.15 (80) 1.67 (42.5) 2.01 (51) 9.45 (240) 3.15 (80) 3.94 (100) 8.