Actuator solutions in steel constructions for water systems Industrial sec tor in form atio n i al sector i n form at i o a l ec to information mat

Multi-turn actuator - worm gearbox combinations at a weir in Malaysia The actuator specialist AUMA is one of the leading manufacturers of electric actuators, actuator controls and valve gearboxes for the automation of industrial valves worldwide. AUMA has more than 45 years of experience in research & development and manufacture of electric multi-turn and part-turn actuators. AUMA manufactures in two German factories. Three Service Centers, respectively in Cologne, Magdeburg and Munich, have been set up to offer service performance. 1,700 employees belong to the AUMA group worldwide. AUMA automates......

Contents The actuator specialist Quality is not just a matter of trust Solutions for a world in motion Service conditions AUMA worldwide Basics - actuators Particular conditions - Local adaptations possible! Safe and reliable – in any circumstance Integration into the DCS - parallel, fieldbus Plug & play - Actuator controls AM and AC Modular design - Tailor-made solutions Design principle Prevention, service life, maintenance - Immediate diagnostics Technical Data Solutions for a world in motion Defining steel constructions for water systems requires a high level of knowledge and experience....

Snow, ice, frost, water and even heat - steel constructions for water systems are intensively and immediately exposed to all elements. They must function reliably under these ambient conditions. This also applies to AUMA devices. As from the beginning, AUMA has therefore attached great importance to the AUMA devices being resistant against the most adverse environmental impacts. Optimum design, use of high-quality material and implementation of best coating procedures are the ideal prerequisites to withstand forces of nature. All within a single housing End position and torque monitoring are...

Corrosion protection Efficient corrosion protection is a major factor in the guarantee of a long operating life. The AUMA corrosion protection system is based on chemical preliminary treatment with double coating of individual parts. The majority of the devices are powder coated. This results in a surface with high mechanical resistance and extraordinary resistance to weather. AUMA recommends using at least corrosion protection class KS for typical applications within sector of steel construction for water systems. Colour The standard colour is silver-grey (similar to RAL 7037). For other colours,...

Multi-turn actuators of type range SA are mainly used to satisfy all actuator requirements in water systems applications. Their large torque and speed range can solve a multitude of automation tasks. In combination with the suitable gearbox ranges there is hardly any steel construction for water systems which could not be automated. Their flexibility is not limited to the mechanical advantages. In combination with integral controls, the devices can be integrated into any conventional DCS. ■ Torque range: 10 Nm – 32,000 Nm ■ Speed range: 4 rpm – 180 rpm Motor duty types - running times Actuator...

Manual operation Electric actuators are always equipped with a handwheel. During commissioning, the actuator is operated manually via the handwheel for the purpose of setting the end positions. In the event of power supply failure, the actuator can be operated using the handwheel. Manual operation is engaged via a switch-over mechanism. The motor connection is disconnected at the same time. The handwheel does not rotate during motor operation. If the electric motor is switched on, the manual drive is automatically disconnected, and the transmission of torque between motor and gearing is restored....

Particular conditions - Local adaptations possible! One of the many advantages of a modular design is the ease at which site upgrade can be achieved. Wall bracket If access to the actuator is difficult, the controls can be mounted separately from the actuator. The cable length between actuator and controls may be up to 100 m. The electrical connections of the basic actuator AUMA NORM and the controls do not differ, whether with or without wall bracket. For this reason, wall bracket retrofitting is possible at any later date. Customisation of device positioning The optimum positioning is easily...

AUMA actuators comply with global safety standards. For this purpose, they provide the following protective functions. Correction of the direction of rotation The automatic correction of the direction of rotation upon wrong phase sequence is an integral feature of both AC and AM controls. If the phases are exchanged at the time of connecting the three-phase supply, the actuator still travels in the correct direction when receiving the respective operation command. Otherwise, there would be the risk to damage downstream components, e.g. stems. Failure behaviour in case of signal loss or in emergency...

Whereas the mechanical interfaces of actuators have been standardised and stable for decades, there is a large variety of interfaces to the DCS. In spite of efforts for standardisation, communication technology is subject to constant improvements due to continuous developments within the electronics sector. For the end user of the plant, transmission of required operation commands and feedback signals for his or her special application is decisive - irrespective of the technological basis. The modular product range offers maximum flexibility: Many levels are feasible, starting with the AUMA NORM...

Parallel signal transmission to the DCS AC controls Compared to the AM, integral actuator controls, AC supplies a far larger number of feedback signals. The plant operator decides which signals are to be transmitted. The same is valid for input definition. Assignment of inputs and outputs can be modified at a later date with the AC device setting. Depending on the version, the AC provides: ■ Up to ten binary inputs e.g. operation commands OPEN, STOP, CLOSE; intermediate position control; release signals for the local controls, emergency commands, etc. ■ Up to twelve binary outputs e.g. for feedback...