AUMA SA 3, SA 6, SA 12, SA 15, SA 25 Manual

Name: AUMA SA 3
Brand: AUMA
SKU: 19673248
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Contents / Introduction

Contents Contents

Introduction

Applications

Type Designation

Multi-turn Actuators

Design Principle

Functions

Open-Close Duty Regulating Duty Limit Switching Torque Switching

Control Equipment

Micro Switches

Reduction Gear Unit

Position Indicators

Intermediate Switch

2

6-7

8 8 8 9 10

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

30-31

32-33

Manual Operation

Top Bevel Gear Set

Space Heater

Motors

Actuators for Regulating Duty

Actuator Types

Auma Norm Actuators

Auma Integral Starter Actuators

Control Versions

Auma Compact

Auma e-pac

Interface

Valve Attachment

Output Drives

Electrical Connection

Actuator Gearbox Combination

Service Conditions

14-15

16-20

Introduction

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 the world.

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

Bangalore.

Enclosure Protection

Ambient Temperature

Explosion Proof

Sales support and after sales service are provided by network consisting of regional

offices & service centers.

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 :

An extermely wide torque range 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

part turn, lever or linear actuator.

A large variety of versions, whether for open or closed loop control, explosion proof

applications, a suitable version is available.

Energy

Power Plants Air Pollution Control District Heating Pipelines

Applications

Water / Waste Water

Water Works Water Pipelines Sewage Treatment Pump Stations Locks / Dams

Chemical Industry

Petro-chemical Chemical Pharmaceutical

Others

Air Conditioning Steel Mills Ship Building Cement Plants Food Industry

3

Type Designation

Actuator

Types

Torque Ratings

Auma

Norm

Auma

Integral Starter

Auma

Flame Proof /

Explosion Proof

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

OPEN-CLOSE Duty

Regulating Duty

Auma

Compact

Auma

e-pac

Expl. Proof

Norm

Expl. Proof

Compact

OPEN-CLOSE Duty

Regulating Duty

OPEN-CLOSE Duty

Regulating Duty

OPEN-CLOSE Duty

Regulating Duty

OPEN-CLOSE Duty

Regulating Duty

Output Drives

Model : SA

Model : SAR

Model :SA Compact

Model : SAR Compact

Model :SA e-pac

Model : SAR e-pac

Model :SAEx

Model : SAREx

Model :SACEx

Model : SARCEx

A Stem nut B Plug Sleeve C Dog Coupling D Stub Shaft E Bore with Keyway

Type Designation : Example

Model

Torque Rating

Output Speed

SA A12 22

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 Speed in RPM

Output Drive

4

Multi-turn Actuator SA3 - SA100 Torque range 3 m kg to 100 m kg

Output speed 4 rpm to 180 rpm

Multi-turn Actuators

Multi-turn Actuator

Integral Starter - Compact

Multi-turn Actuator

Integral Starter - e pac

Multi-turn Actuator

Flame Proof / Explosion Proof

5

Design Principle

Manual Operation

Motor

Change Gears

Terminal

Compartment

Reduction Gearing

Valve Attachment

Switch Compartment

6

Motor Terminal 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.

Change Gears Valve Attachment

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 site.

Reduction Gearing Manual Operation

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 torque is transmitted to control unit.

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.

The mounting flange is according to ISO 5210 / DIN 3210. Various output drives are available for for adaption to various types of valves.

For commissioning or in an emergency, actuator can be operated with hand wheel. When starting the motor, the manual drive is automatically disengaged.

Switch Compartment

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 accessible for any setting at site.

7

Functions

Open Close Duty

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

between a few minutes to several months.

Auma multi-turn actuators type SA for open close service are rated for short time duty S2-15min.

Regulating / Modulating Duty

Typical Characteristics of

OPEN-CLOSE DUTY

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.

Typical Characteristics of

Regulating / Modulating Duty

Pemissible number of starts-stops depends upon actuator size & speed. The details are available in Data Sheets.

Short Time and Intermittent Duty IS 12824

Short time Duty S2 Intermittent Duty S4

Operation at constant load during a given time, less than that required to reach thermal equilibrium, followed by a rest and deenergized period of sufficient duration to reestablish machine temperatures within 2 C.

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 deenergized period. These periods being too short to attain thermal equilibrium during one duty

cycle.

The duration of short time is limited to 15, 30 or 60 min.

The relative on time at S4-25% is limited to 25% of the cycle time.

8

Limit Switching

Functions

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

Two Train Counter Gear

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.

switching points operate the electrical limit switches by cams. The setting accuracy is 1/10 of a turn of actuator output shaft.

In limit switching, two train counter gear and four train counter gear versions are available :

Four Train Counter Gear

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.

Examples of such application are :

To stop at intermediate position Sequence control, that is to start another equipment like pump or bypass valve actuator after certain travel of valve.

Two Train Counter Gear

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 + 2 NC contacts are provided.

Four Train Counter Gear

9

Functions

Torque Switching

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

worm.

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 torque switch serves as overload protection.

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 commonly used in the end position OPEN.

Running Indication

Blinker switch is provided in the actuator and can be used as running indicator.

Torque Switching

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 directions.

10

Micro Switches

Control Equipment

With the help of micro switches, mechanical parameters such as travel & torque are converted into electrical signals for actuator control. There are four switches in the basic

version :

One limit switch each for the end positions OPEN and CLOSE

One torque switch each for the directions OPEN and CLOSE.

Single and Tandem Micro Switches

Limit and Torque Switches are available in single or tandem versions.

Limit switches are tripped when an end position is reached and torque switches are tripped when the set tripping torque is exceeded.

The micro switches are sealed to enclosure protection class IP66, as per IS 13947. The micro switches have double break change over potential free contacts. The circuit is interrupted simultaneously at two points. The basic versions of the switch contacts are of silver. For low current ratings, micro switches with gold plated

contacts are available.

Switching another circuit also with different voltage & current

Safety function, to operate with single switch

Multiplying the available contacts, example for signalization.

Single Micro Switch

Limit or Torque Switches in tandem version have additional switching contacts. These contacts can be wired for following applications :

Micro Switch Ratings

Type of Switch

Limit and

Torque

Type of Current

AC, cos O = 0.8 Inductive

DC inductive

30 V

DC resistive

Blinker

AC, cos O = 0.8 Inductive

For such applications, a relay is recommended since there may be small differences in tripping points of tandem switches.

Rating in Amp at

75 V

Tandem Micro Switch

125 V 250 V

0.2

0.5

0.1

0.25

Approx. Electrical contact rating

500,000 cycles at 250 V AC, 5A

50,000 cycles at 250 V DC, 0.1A

50,000 cycles at 250 V DC, 0.25A

11

Control Equipment

Reduction Gear Unit

A reduction gear unit (RGU) in the actuator is used for mechanical position indication, remote position indication & for operation of intermediate switches. The output shaft of the actuator drives final output shaft of RGU through a series of reduction gears and final shaft turns by approximately 270 while

actuator output shaft performs full number of turns as set on two train or four train counter gear unit. The reduction gear ratio needed for each particular case is fitted at works if the ratio is known. For this purpose fixed RGU is supplied. If the ratio needs to be altered

Position Indicators

Mechanical Position Indicator

The position of the valve is indicated continuously by adjustable discs having symbols for OPEN and CLOSE. The discs can be seen through an indicator glass on switch compartment cover. The open-close discs can be set to coincide with limit switching. The mechanical position indicator requires reduction gear unit for operation.

at site, variable ratio RGU is available which allows simple modification at site depending upon number of turns of output shaft for full stroke of valve.

Reduction Gear Unit (RGU)

Remote Position Indicator

The position of the valve can be transmitted as a continuous signal for remote indication. A potentiometer mounted on RGU is used for this purpose. A power supply unit provides necessary voltage to the potentiometer. The potentiometer rotates through 270 for one full

stroke of valve & output signal from potentiometer is proportional to valve travel. Thus the actual position of the valve can be

Mechanical Position Indicator

read off continuously on position meter calibrated & mounted on control panel.

Technical Data

Std: 220 ohms, 3W, Linearity + 3% Optional : 100, 560, 1000 ohms,

Potentiometer

3W, Linearity + 3% Precision : 200, 500, 1000 ohms, 1W, Linearity + 0.5%

Power Supply Unit

Position

PS01, input 220V, 50Hz, output 24V DC

0 - 100% in various sizes

Meter

Digital Remote Position Indicator

Actual position display can be provided by digital remote position indicator, which displays open position in percentage.

12

Remote Position Indicator

Intermediate Switches

With this limit switching, additional switching points can be set for each direction of rotation. The switching can be set between 25 and 75% of valve travel in each direction. The switch sub assembly consisting of 2 or 4 cam switches is mounted on output shaft of RGU. Each

micro switch has 1 NO + 1 NC contact.

Manual Operation

For commissioning or in an emergency when there is no power supply, actuator can be operated by hand wheel. The manual drive is engaged by means of a lever. When motor starts running, the manual drive gets disengaged immediately & hand wheel does not rotate during power operation.

Control Equipment

Intermediate Switches

In manual operation, hammer blow can be effected with hand wheel. The hammer blow makes it possible to open a jammed or rarely

operated valve.

Top Bevel Gear Set

Manual effort on hand wheel can be further reduced by using a side mounted hand wheel instead of standard hand wheel. Reduction

ratios available are SA3 / 6 / 12 / 15

SA25 / 30 / 50 / 60

SA 100 Instead of hand wheel, a chain pulley can be provided for actuators mounted in inaccessible

zones.

Space Heater

2 : 1 3 : 1 4 : 1

Top Bevel Gear Set

Condensation in the actuator is possible due to

wide fluctuation of the ambient temperature.

The heater integrated in the control unit

prevents the water condensation. The heater is

rated for continuous duty. This may be

continuously energized or when the actuator

is not operating.

Technical Data

Volts, AC

Resistance ohms

Rating Watts

230

10 20 10 20

230 110 110

2.7K 1.2K 0.6K

13

Control Equipment

Motors

As a standard, Auma multi turn actuators are

equipped with 3 phase induction motors.

Auma motors are class F insulated and withstand winding temperature upto 140 C.

The motors are used for short time duty (S2-15

min or S4-25% as per IS 12824) and provide

approximately three times rated torque for

short duration. The size of the motor is smaller

compared to continuous duty motor S1 of

same output power. This results in reduced

inertia of the rotor and therefore less

overshoot after switching off of motor. Auma

motors are designed for enclosure protection

class IP 68 when mounted on the actuator. All

motor cables are brought to terminal

compartment cover from inside of the actuator

thus avoiding terminal box.

Technical Data

Single Phase AC Motors

Auma actuators can be supplied with single phase AC motor. The required capacitor is fitted in the terminal compartment cover.

DC Motors

Auma actuators are also available with DC motors. These motors operate on 24 V, 110 V or 220 V DC supply.

AC Motors with Other Voltages and Frequency

Three phase induction motors are available in wide range of operating voltages from 220 V to 560 V and operating frequency of 50 or 60 Hz.

3 ph AC Motor 1 ph AC Motor DC Motor

50/60 Hz : 220 V, 380 V

50/60 Hz :

400 V, 415 V

Voltages

440 V, 460 V 480 V, 500 V

550 V Permissible Variation in Voltage

+ 10%

Mounting C Type Flange, B14, IS 2223

Enclosure Protection IP 67 or IP 68 after mounting

Type of Cooling Surface Cooled

Insulation Class

F Class, IS 325 (max. temp. rise 140 C)

Starting Direct on line

Type of Duty S2-15 min. or S4-25 % IS 12824

Direction of Rotation Clockwise and anticlockwise

220 V - 240 V

110 V - 220 V

220 V 110 V

48 V 24 V

+ 10% + 10%

Motor Protection 3 thermo switches 2 thermo switches 4 thermo switches

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