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Samson 3731-3 User Manual

Samson 3731-3
100 pages
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Series 3731
Type 3731-3 Electropneumatic Ex d
Positioner
with HART
®
communication
Mounting and
Operating Instructions
EB 8387-3 EN
Firmware version 1.61
Edition May 2017
Fig. 1 · Type 3731-3
EB + CD

Table of Contents

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Samson 3731-3 Specifications

General IconGeneral
BrandSamson
Model3731-3
CategoryValve Positioners
LanguageEnglish

Summary

Series 3731 Electropneumatic Positioner

Important Safety Instructions

General Safety Precautions

Safety guidelines for personnel and equipment during use.

Design and Principle of Operation

Attachment to Control Valve

Connections

Operator Controls and Readings

Start-up and Settings

Checking Operating Range

Procedure to verify the valve's travel range and positioner response.

Allocating the Closed Position

Setting the 0% travel position based on actuator type and direction.

Positioner Initialization Warning

Critical warning regarding valve movement during initialization.

Positioner Initialization Modes Overview

Explanation of different initialization modes (MAX, NOM, MAN, SUB).

MAX Initialization Procedure

Step-by-step guide for MAX initialization mode.

NOM Initialization Procedure

Step-by-step guide for NOM initialization mode.

MAN Initialization Procedure

Step-by-step guide for MAN initialization mode.

SUB Substitute Calibration Procedure

Instructions for emergency replacement calibration.

Zero Calibration Procedure

Steps to recalibrate the zero point for accuracy.

Reset to Default Values

Procedure to restore factory default settings.

Operation

Enabling Parameters and Configuration

How to enable parameters and navigate settings.

Operating Modes: AUTO, MAN, SAFE

Switching between automatic, manual, and fail-safe modes.

Malfunction and Maintenance Alarms

Explains alarm types and status classifications.

Confirming Error Messages

Procedure for acknowledging and confirming error messages.

Maintenance

Servicing Explosion-Protected Devices

Specific requirements for servicing Ex-protected equipment.

Code List

Initialization Error Codes (50-56)

Lists errors related to initialization, range, and attachment.

Operational Error Codes (57-60)

Covers errors like control loop, zero point, autocorrelation, and fatal errors.

Hardware Error Codes (62-64)

Lists errors related to signal, low reference variable, and i/p converter.

Data Error Codes (68-74)

Covers errors in control, potentiometer, calibration, general, start-up, internal device, and HART parameters.

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