Siemens MXG461B Series User Manual

MXG461B Series
Technical Instructions
Document No. 125-4461
May 3, 2006
Modulating Control Valves with
Magnetic Actuators, Positioning
Control and Position Feedback for
Domestic Water
Description
Control valves with magnetic actuators, for modulating control of domestic water, cold
water and hot water systems.
Features
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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 MX4G61B 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 modulating control of domestic, hot and cold water systems.
Siemens Building Technologies, Inc.

Siemens MXG461B Series Specifications

General

Brand	Siemens
Model	MXG461B Series
Category	Control Unit
Language	English

Summary

MXG461B Series Modulating Control Valves

Product Overview and Features

Control valves for modulating domestic water, listing key features like fast positioning and selectable characteristics.

Product Identification and Safety

Presents product numbers and crucial safety warnings/cautions for users.

Application Details

Details the use of MXG461B Series valves in domestic, hot, and cold water systems.

Ordering and Technical Information

Ordering and Accessories

Instructions for ordering valves and stem heaters, plus available replacement parts.

Technical and Automatic Control

Explains the electronic control module and how automatic control ensures precise valve positioning.

Control and Operation

Valve Control and Wiring

Describes actuator control via voltage/current signals and the importance of a 4-wire connection.

Operating State Indicators

Explains LED indications for normal operation, calibration, manual control, and fault conditions.

Manual Operation and Configuration

Manual Operation and Calibration

Details manual adjustment of the valve and the procedure for recalibrating the electronics module.

DIP Switch Configuration

Explains how to configure input signals and valve characteristics using DIP switches.

Control Inputs and Signal Logic

Forced Control and Signal Priority

Describes forced control inputs (terminal Z) and the priority order of control signals.

Installation and Mounting

Valve Characteristics and Installation

Presents valve sizing graphs and provides installation notes, including sealing and straight-through use.

Mounting Position Guidelines

Specifies acceptable mounting positions for the valve, advising against downward orientation.

Component Specifications

Stem Heater and Specifications

Details the Z366 stem heater connection and provides comprehensive technical specifications.

Material, Connections, and Approvals

Materials, Connections, and Approvals

Covers valve materials, pipe/electrical connections, ambient conditions, and agency approvals.

Connection Terminals and Wiring Diagram

Illustrates terminal connections for various controllers and emphasizes 4-wire connection for DC power.

Advanced Wiring Configurations

Phase-Cut Signal Connections

Shows specific terminal connections for controllers utilizing phase-cut signals (0-20 Vdc).

Application Examples and Service

Application Examples and Service

Provides schematic examples of valve applications and guidelines for service and maintenance.

Product Dimensions

Valve Dimensions

Presents a detailed table of dimensions for each MXG461B product number.