Satchwell ALX 1251 - User Manual

DS 3.401
11/99
ALM, ALX, ALE
An Invensys company
LINEAR ACTUATORS
Specification no. 477-X-XXX
†
Satchwell Linear Actuators type 'AL' are reversing actuators having a
linear output, for direct coupling to Satchwell lift and lay seat-type
control valves or other seat valves requiring a linear driver over stroke
lengths of up to 38mm (1½"), within the limits of output thrust stated
overleaf and with compatible mounting arrangements.
These actuators are suitable for either two-position or modulating
control, dependent on the controller or other switching device providing
the input signal. The ALM is suitable for a mains power supply, the ALX
is 24V, and the ALE is 24V, but accepts a 0-10Vdc input signal.
The ALE actuator can be set to operate a low hysteresis when used for
tight control applications on microprocessor based controllers such as
the KMC and MMC.
FEATURES
• Direct coupling to Satchwell seat valves without extra
mounting brackets or linkage kits, saving site time
• Direct coupling to other makes of seat valves, where stroke,
thrust and mounting are compatible
• Universal for valve strokes, up to 38mm (1½"). Actuator stroke
is self-setting to suit valve stroke, including ALE by simple
adjustment
• Alternative stroke times, to suit application
• Manual operation or override facility built-in
• Standard or low hysterisis selection on ALE to cater for
different application types
• Case sealed to IP 54 as standard
• Auxiliary switch kit available, see 'Accessories'
† For the full specification number replace the 4Xs with the
appropriate figures from the 'TYPE' column in the table
on page 2.
MLI 3.401 - Mounting Instructions
Valves
DS 4.410 - VZ, VSF, VZF
DS 4.610 - MZ, MJF, MZF

Summary

Linear Actuators Overview

Product Specifications

Accessories

Lists available add-on components for actuators.

Linkage Kits for Valve Compatibility

Actuator Construction Details

Actuator Operation

ALM and ALX Actuator Operation

Describes the operational modes for ALM and ALX actuator models.

ALE Actuator Operation

Explains the modulating control and specific settings for ALE actuators.

ALE Actuator Settings

Details START, SPAN, and ACTION settings for ALE actuator positioning.

Auxiliary Switches Operation

Explains the function and application of auxiliary switches in operation.

Installation Procedures

Actuator Fitting Instructions

Step-by-step guide for physically attaching the actuator to a valve.

Wiring Instructions

Steps for connecting actuator electrical wiring to the system.

Commissioning and Setup

ALM and ALX Commissioning

Procedure for checking and setting up ALM and ALX actuators.

ALE Actuator Setting Procedure

Detailed steps to set the stroke and parameters for ALE actuators.

ALE Wiring Precautions

Important wiring considerations and precautions specific to ALE actuators.

Electrical Connection Diagrams

ALM Actuator Wiring Diagram

Wiring schematic for ALM actuators.

ALX Actuator Wiring Diagram

Wiring schematic for ALX actuators.

ALE Actuator Wiring Diagram

Wiring schematic for ALE actuators.

ALE Sequential Operation Diagram

Diagram showing two-stage sequential operation for ALE actuators.

Auxiliary Switch Wiring Diagram

Wiring diagram for auxiliary switch kit 831-1-211.

Dimensional Drawings

Satchwell ALX 1251 Specifications

General

Model	ALX 1251
Manufacturer	Satchwell
Output Type	Relay
Mounting	DIN Rail
Type	Controller
Input Voltage	24 VAC
Operating Temperature	0°C to 50°C