AUMA SA 3 User manual

Contents / Introduction

Contents Contents

Introduction

Applications

Type Designation

Multi-turn Actuators

Design Principle

6-7

Functions

Open-Close Duty

Regulating Duty

Limit Switching

Torque Switching

Control Equipment

Micro Switches

Reduction Gear Unit

Position Indicators

Intermediate Switch

Manual Operation

Top Bevel Gear Set

Space Heater

Motors

General

Data Sheets

Technical Data Open-Close Duty

Electrical Data Open-Close Duty

Technical Data Regulating Duty

Electrical Data Regulating Duty

Dimension Sheet, Norm

Dimension Sheet, Compact

Dimension Sheet, E-pac

Output Drives

Linear Thrust Unit

Terminal Plan (Norm)

Wiring Diagram (Integral Starter)

Legend - Integral Starter

14-15

30-31

32-33

Actuators for Regulating Duty

Actuator Types

Auma Norm Actuators

Auma Integral Starter Actuators

Control Versions

Auma Compact

Auma e-pac

16-20

Interface

Valve Attachment

Output Drives

Electrical Connection

Actuator Gearbox Combination

Service Conditions

Enclosure Protection

Ambient Temperature

Explosion Proof

In the course of ever increasing demand for

automation in all sectors of industries, electric

actuators for process control and regulation

have become more and more important. For

more than 30 years, Auma concentrates on

design, development and manufacturing of

electric actuators. During this period, Auma

has acquired a know-how in this field that can

hardly be surpassed. Auma today is one of the

leading manufacturers of electric actuators in

Auma India (Ltd.,) is now a subsidiary of

Auma Werner Riester Gmbh & Co. KG,

Germany manufacturing electric actuators

under brand name . Auma (India) Ltd.,

started its operations in the year 1985 with HQ

and sophisticated manufacturing base at

Introduction

the world.

Bangalore.

offices & service centers.

Sales support and after sales service are

provided by network consisting of regional

Applications

Auma multi-turn actuators of the type range SA

can be used wherever the automation of the

valve is required. The adoption to the

requirements of nearly every valve automation

task is possible. This is on account of :

Various combination possibilities with

Auma Valve Gear boxes. Thereby the torque

range can be further extended and / or the

multiturn actuator can be converted into

A large variety of versions, whether for open

or closed loop control, explosion proof

applications, a suitable version is available.

part turn, lever or linear actuator.

An extermely wide torque range

Energy

Power Plants

Air Pollution Control

District Heating

Pipelines

Others

Air Conditioning

Steel Mills

Ship Building

Cement Plants

Food Industry

Chemical Industry

Petro-chemical

Chemical

Pharmaceutical

Water / Waste Water

Water Works

Water Pipelines

Sewage Treatment

Pump Stations

Locks / Dams

Type Designation

Auma

Norm Regulating Duty

OPEN-CLOSE Duty

Regulating Duty

OPEN-CLOSE Duty

Regulating Duty

OPEN-CLOSE Duty

Regulating Duty

OPEN-CLOSE Duty

Model : SA

Model : SAR

OPEN-CLOSE Duty

Regulating Duty

Model :SA Compact

Model : SAR Compact

Model :SA e-pac

Model : SAR e-pac

Model :SAEx

Model : SAREx

Model :SACEx

Model : SARCEx

Auma

Integral Starter

Actuator

Types

Auma

Compact

Auma

e-pac

Expl. Proof

Norm

Expl. Proof

Compact

Auma

Flame Proof /

Explosion Proof

Type Designation : Example

Model

Torque Rating Output Drive

Output Speed in RPM

SA A12 22

Torque Ratings 3 m kg

6 m kg

12 m kg

15 m kg

25 m kg

30 m kg

50 m kg

60 m kg

100 m kg

Output Speed 4 rpm

5.6 rpm

8 rpm

11 rpm

16 rpm

22 rpm

32 rpm

45 rpm

63 rpm

90 rpm

125 rpm

180 rpm

Output Drives A Stem nut

B Plug Sleeve

C Dog Coupling

D Stub Shaft

E Bore with Keyway

Multi-turn Actuators

Multi-turn Actuator SA3 - SA100

Torque range 3 m kg to 100 m kg

Output speed 4 rpm to 180 rpm

Multi-turn Actuator

Integral Starter - Compact

Multi-turn Actuator

Integral Starter - e pac

Multi-turn Actuator

Flame Proof / Explosion Proof

Design Principle

Switch Compartment

Valve Attachment

Reduction Gearing

Terminal

Compartment

Manual Operation

Motor

Change Gears

A well proved principle of worm gearing is

used to reduce the motor speed to required

output speed of actuator. Self-locking feature

is achieved by worm gearing upto 90 output

rpm. Worm shaft and output shaft with worm

wheel run in ample sized bearings. The sliding

worm is positioned between two sets of

springs on worm shaft. The worm moves

axially in relation to thrust which is the

measure for torque. Via lever & gears the

Depending upon type of valve, the actuator

must be switched off at end positions by limit

switch or torque switch. For this purpose,

independent limit switching or torque

switching devices are provided in the switch

compartment. The switching devices are easily

Motor Terminal Compartment

Change Gears Valve Attachment

Reduction Gearing Manual Operation

Switch Compartment

Design Principle

Especially high starting torque is frequently

required to unseat valves from end positions.

The motors developed by Auma fulfil this

basic requirement.

accessible for any setting at site.

All electrical connections are terminated inside

the terminal compartment. Screw type terminals

are provided for easy connections. Multi-pin

plug-socket connector can be provided for ease

of connections & maintenance.

site.

Auma actuators are driven by special

combination of gears which are outside the

grease filled housing & require no lubrication.

If required, output speed can be easily altered

by changing the gear pair and / or motor at

for adaption to various types of valves.

The mounting flange is according to ISO 5210 /

DIN 3210. Various output drives are available for

torque is transmitted to control unit.

disengaged.

For commissioning or in an emergency, actuator

can be operated with hand wheel. When starting

the motor, the manual drive is automatically

Pemissible number of starts-stops depends upon

actuator size & speed. The details are available

Open Close Duty

Regulating / Modulating Duty

Short Time and Intermittent Duty IS 12824

Functions

Typical Characteristics of

OPEN-CLOSE DUTY

Typical Characteristics of

Regulating / Modulating Duty

Short time Duty S2 Intermittent Duty S4

S2-15min.

The characteristic feature of this actuator is

open loop. The normal valve positions in

OPEN-CLOSE Duty are end positions OPEN

and CLOSED. After receiving command, the

actuator operates the valve to one of the end

positions or if necessary to a preset

intermediate position. The valves are operated

relatively seldom, the time intervals can span

Auma multi-turn actuators type SA for open

close service are rated for short time duty

between a few minutes to several months.

in Data Sheets.

Operation at constant load during a given

time, less than that required to reach thermal

equilibrium, followed by a rest and de-

energized period of sufficient duration to re-

The duration of short time is limited to 15, 30

or 60 min.

establish machine temperatures within 2 C.

The characteristic feature of this actuator is

closed loop in which input command signal to

actuator is directly influenced by the flow

through the valve. Regulating / Modulating

duty actuator SAR operates between two set

bands between open-close positions depending

upon actual valve position and feedback signal.

The motors of these actuators are rated for

intermittent duty S4-25%. The mechanical

components and motor are designed to withstand

a large number of operations required for

modulating applications.

A sequence of identical duty cycles, each cycle

including a significant period of starting, a period

of operation at constant load and a rest and de-

energized period. These periods being too short

to attain thermal equilibrium during one duty

The relative on time at S4-25% is limited to

25% of the cycle time.

cycle.

The accuracy of setting is 1/10 of a turn of

actuator output shaft. For four train counter

gear, 4 limit switches of 1 NO + 1 NC or 2 NO

Limit Switching

Two Train Counter Gear

Four Train Counter Gear

Functions

For Two train counter gear, two limit switches,

one for each direction of travel having 1 NO

+ 1 NC or 2 NO + 2 NC contacts are provided.

The number of spindle turns can be set

between 1 and 480 or 1 and 4800.

Two Train Counter Gear

Four Train Counter Gear

Examples of such application are :

+ 2 NC contacts are provided.

The limit switching enables to switch off the

actuator when reaching defined valve

position, usually end positions. The valve

travel is measured by mechanical counter gear

mechanism which when reaching the set

switching points operate the electrical limit

switches by cams. The setting accuracy is 1/10 of

In limit switching, two train counter gear and

a turn of actuator output shaft.

four train counter gear versions are available :

If limit switching is required at two end

positions only, two train counter gear is used.

However, if two additional intermediate

switching positions are desired, Four Train

Counter Gear is required. This limit switching

has 4 counter gears and 4 micro switches. Two

counter gears are used to switch off at end

positions as in Two Train Counter Gear. The

other two are available for setting any desired

intermediate positions between end positions.

After cam actuation, the switches remain

actuated till reaching end of valve travel.

To stop at intermediate position

Sequence control, that is to start

another equipment like pump or bypass

valve actuator after certain travel

of valve.

Torque Switching

Running Indication

Torque Switching

Functions

directions.

can be used as running indicator.

The torque switching enables to switch off the

actuator when pre-determined torque is

reached instead of a defined position. The

torque switching works on principle of sliding

Axial displacement of worm proportional to

thrust is transmitted to torque switches.

Torque switches operate in closing & opening

directions. The required tripping torque can be

easily set on the graduated dial. If limit switch

cut off is selected prior to torque switch, then

For tight seating of certain valves, the actuator

must be operated to end position CLOSED

with defined force. Such operation can be

carried out by torque seating. Limit seating is

worm.

torque switch serves as overload protection.

commonly used in the end position OPEN.

When torque seating is used at end position,

limit switches can be used for signalization.

Therefore actuator controls can differentiate

whether actuator was switched off by torque

switch or by limit switch. Micro switches of

torque switching are provided with 1 NO + 1 NC

or 2 NO + 2 NC contacts for both open & close

Blinker switch is provided in the actuator and

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