Brand: AUMA

AUMA TIGRON TR-M SIL Explosion-Proof SIL Actuator

Name: AUMA TIGRON TR-M SIL Explosion-Proof SIL Actuator
Brand: AUMA
SKU: TIGRON TR-M SIL

Description

AUMA TIGRON TR-M SIL explosion-proof SIL actuator

The AUMA TIGRON TR-M SIL is the functional-safety version of the TIGRON compact actuator family. It is an explosion-proof electric actuator for open-close and modulating duty, with a torque range of 10 Nm to 1000 Nm, and it is aimed at valves that must reach a defined safe position when a plant shutdown is demanded. In the TIGRON TR-M SIL the safety function is handled by a safety-related software layer inside the actuator, so the emergency action does not depend on the normal control path. Seven Star LLC supplies AUMA actuators in Oman and the GCC as an independent supplier in Muscat; this page explains the TIGRON TR-M SIL so that you can prepare a precise enquiry.

Unlike a standard actuator that is later retrofitted with a safety relay, the TIGRON TR-M SIL is configured at device level. Up to four different safety functions can be defined for one unit and their priority can be set freely, which suits complex shutdown philosophies where, for example, an emergency-shutdown close must overrule a safe stop.

TIGRON TR-M SIL technical data

Parameter	Specification
Manufacturer / part number	AUMA / TIGRON TR-M SIL
Duty	Open-close and modulating duty, explosion-proof
Torque range	10 Nm to 1000 Nm
Modulating torque range	10 Nm to 1000 Nm
Output speeds	4 to 216 rpm (1/min)
Enclosure protection	IP68
Corrosion protection	C5/CX
Ambient temperature	-63 °C to +70 °C
ATEX	Ex db eb h IIC T4 Gb; Ex h tb IIIC T130 °C Db
FM	Class I, Division 1, Groups B, C, D T4; Class II, III, Division 1, Groups E, F, G T130 °C
IECEx	Ex db eb h IIC T4 Gb; Ex h tb IIIC T130 °C Db
Functional safety	TUV Nord certification to IEC 61508 (SIL) and ISO 13849 (PL)
Position sensing	Up to 5,000 turns/stroke
Torque sensing	0 to 100 % of maximum torque
Interfaces	Position transmitter, Profibus, Modbus, plug-in electrical connection

Safety functions of the TIGRON TR-M SIL

The functions certified for the TIGRON TR-M SIL are listed by the manufacturer as follows:

Safe OPENING and Safe CLOSING (ESD)
Safe OPENING and Safe CLOSING (ESD) with a timer function, intended to avoid pressure surges in the pipeline
Safe STOP
Safe end position feedback

The functions are rated for SIL 2 at hardware fault tolerance HFT=0 and systematic capability SC=3. Used with redundancy, the same functions can be applied up to SIL 3. Five SIL-assessed outputs are available. The type of seating can be chosen separately for the safe opening function, the safe closing function and the standard functions: forced limit seating, forced torque seating or no seating. Overload protection and a torque bypass can be switched on for safety operations when the valve design needs them.

How the TIGRON TR-M SIL works in service

In normal operation the actuator behaves like a standard TIGRON: the Combi-Switch combines limit and torque sensing, the position is tracked over up to 5,000 turns or strokes and torque is measured from 0 to 100 percent of the rated maximum. When a safety demand arrives, the safety-related software takes priority, executes the configured function with its own seating mode and torque handling, and reports the result through the SIL-assessed outputs. A handwheel remains available for manual operation when the actuator is de-energised and no safety demand is active.

The timer function deserves attention in liquid lines. Closing a large valve instantly after a trip can create a hydraulic shock; the timer spreads the closing action so that the shutdown stays safe for the pipe as well as for the process.

Where the TIGRON TR-M SIL fits in the plant

The TIGRON TR-M SIL is suited to isolation valves, emergency shutdown valves, burner and fuel gas valves and tank-farm valves where an explosion-proof area classification and a SIL requirement apply together. Because the housing is rated for ATEX, FM and IECEx marking in the hazardous areas listed above and the stated ambient range reaches from -63 °C to +70 °C, one unit can cover both cold-climate and hot desert installations. Related AUMA devices include the standard TIGRON TR-M, the TIGRON Fail Safe unit for high-torque spring-return duty and the SQEx and SAEx families with ACExC controls.

Selection checklist for TIGRON TR-M SIL

Required safety functions and the SIL level demanded by the safety requirement specification
Whether a single actuator (SIL 2) or a redundant arrangement (SIL 3) is intended
Valve torque at opening, closing and seating, including the breakaway value after long standing
Required seating type for the emergency action and the standard action
Hazardous-area marking needed on site: ATEX zone, gas group, temperature class or FM class and division
Fieldbus or analogue interface to the DCS and the number of SIL outputs to be wired
Valve flange or attachment and stem type, and the required output speed
Ambient minimum and maximum temperature and site corrosivity

Installation and commissioning of the TIGRON TR-M SIL

Mount the actuator on the valve in a de-energised state and align the output with the stem or the gearbox input. Commissioning uses the Commissioning Assistant and the six indication lights on the actuator, two of which can be assigned freely and whose colours can be programmed to match the plant convention. Safety parameters should be set and documented under the plant functional-safety procedure, and a proof test of the safety function should be planned together with the valve partial-stroke or full-stroke test. Low standby consumption, actuator and valve diagnostics and the plug-in electrical connection support predictive maintenance, because a unit can be disconnected and reconnected without disturbing the wiring.

Applications of the TIGRON TR-M SIL in Oman and the GCC

In Oman and the wider Gulf region, explosion-proof SIL actuators are typically specified for oil and gas wellhead and gathering facilities, gas processing, petrochemical units, power plant fuel systems and desalination plants with chemical dosing hazards. Heat, dust and humidity are standard site conditions. The IP68 enclosure, C5/CX corrosion class and the wide temperature range of the TIGRON TR-M SIL address these conditions, while the Profibus and Modbus interfaces allow integration into established control systems.

Related AUMA SIL products

Product	Typical role
TIGRON TR-M SIL	10 to 1000 Nm, explosion-proof, up to four configurable safety functions
FQM/FQMEx SIL	150 to 1200 Nm fail-safe unit with constant-force spring for part-turn valves
AC 01.2-SIL / ACExC 01.2-SIL	Actuator controls with an additional SIL module for SA .2 and SQ .2 actuators
TIGRON Fail Safe	2,000 to 60,000 Nm mechanical spring-return actuator

Information to send with an RFQ

Required part number: TIGRON TR-M SIL, with the required torque range
Valve type, size, pressure class and torque data
SIL target and safety functions required
Hazardous-area classification and certificates required
Supply voltage and frequency
Communication protocol and I/O needs
Site temperature range, quantity and delivery location

Documents and quotation

Send the part number TIGRON TR-M SIL, the application and the quantity, and Seven Star LLC will confirm which official documents are available for your configuration. Please do not rely on a general description alone: the order data, wiring diagram number and explosion-protection marking of the delivered unit are what count for engineering and commissioning.

Seven Star LLC is an independent supplier in Muscat serving customers across Oman and the GCC. Quotations are prepared against your enquiry data and are confirmed individually.

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About brand

AUMA builds electric actuators for industrial valves, gates and dampers. The company was founded in 1964 near Stuttgart by Werner Riester and Rudolf Dinse, moved its headquarters to Müllheim in south-west Germany in the early 1970s, and still trades as the owner-managed AUMA Riester GmbH & Co. KG. Its actuators run isolation and control valves in water, power, oil and gas and process plants worldwide.

Seven Star LLC is an independent supplier listing AUMA multi-turn and part-turn actuators, actuator controls, gearboxes and spare parts for buyers in Oman and the GCC. We work from the nameplate data so that a replacement matches the installed actuator, controls and gearbox.

AUMA company profile

Origin	Founded in 1964 by Werner Riester (engineering) and Rudolf Dinse (sales and finance); registered as Riester KG in Esslingen. Water and wastewater plants were the first customers.
Headquarters	Müllheim, Baden-Württemberg, Germany (since the early 1970s). Production in Germany, with further plants in India, the USA and China, and around 30 sales and service companies worldwide.
Ownership	Privately held, owner-managed company: AUMA Riester GmbH & Co. KG
Torque and thrust range	Multi-turn, part-turn and linear actuators from 1.5 Nm to 675,000 Nm with gearboxes, and linear thrust up to 217 kN, as published by AUMA
Design principle	Modular: actuator, integral controls and gearbox are combined to suit the valve, so one actuator size can serve open-close, modulating, fieldbus or explosion-proof duty

Milestones

1964: Werner Riester and Rudolf Dinse found AUMA near Stuttgart; the first actuator range follows, with water and sewage plants as the first customers.
Early 1970s: Lack of space in Nellingen leads to the move to Müllheim in south-west Germany.
1974: AUMA Benelux, the first foreign subsidiary, is founded.
Today: About 2,800 employees worldwide, around 850 of them in Müllheim, according to AUMA.

AUMA actuator, controls and gearbox series

Series	Type	Typical use
SA 07.2 to SA 16.2, SA 25.1 to SA 40.1	Multi-turn actuators, open-close duty	Gate and globe valves, sluice gates and penstocks; SA 07.2 to 16.2 cover roughly 10 to 1,000 Nm, the .1 sizes go far higher
SAR 07.2 to SAR 30.1	Multi-turn actuators, modulating duty	Control valves that receive a continuous position setpoint and many starts per hour
SAV, SARV, SQV, SQRV	Variable-speed actuators	Slow approach to the seat to limit water hammer, fast travel elsewhere
SQ 05.2 to SQ 14.2, SQR	Part-turn actuators	Ball, butterfly and plug valves and dampers, about 50 to 2,400 Nm; SQR for modulating duty; FQM fail-safe unit for spring-return action
SAEx, SAREx, SQEx, PROFOX-MX, TIGRON	Explosion-proof actuators	Hazardous areas in oil, gas and chemical plants, with ATEX and IECEx certified versions
AUMA MATIC AM, AUMATIC AC, ACExC 01.2, AMExC 01.1, AC 01.2-SIL	Integral actuator controls	AM for simple parallel wiring; AC for positioning, diagnostics and fieldbus (PROFIBUS DP, PROFINET, Modbus, FOUNDATION Fieldbus, HART depending on version); SIL version for safety functions
GS, GHE, SA + GS combination	Part-turn worm gearboxes	Large butterfly and ball valves, from GS 63.3 up to GS 630.3 at 675,000 Nm
GK, GST, GHT, GP	Multi-turn gearboxes (bevel, spur, worm, planetary)	Offset or right-angle drives and very high multi-turn torque
LE, SVC/SVCR, PROFOX-L	Linear actuators and thrust units	Globe and control valves with a rising stem, up to 217 kN
PROFOX-M, PROFOX-Q	Compact smart actuators	Small valves where a full SA or SQ is oversized
SA-UW, SGM/SGMR, SVM/SVMR, SAN/SARN	Special versions	Submerged valves, seawater-exposed ship and offshore duty, nuclear plant service
SIMA2	Master station	Fieldbus network management for many actuators on one plant

Where AUMA actuators are used

Water transmission and treatment is the largest use: pipeline isolation valves, pumping stations, desalination plants and sluice gates. AUMA actuators also run valves in power plant steam, feedwater and cooling systems, pipelines and tank farms, refineries and chemical plants, and on ships and offshore platforms. In the Gulf, check the ambient temperature rating, since actuators in direct sun can exceed 50 °C, and specify the enclosure protection for sand and humidity.

Ordering AUMA actuators and spare parts: what we need

For a replacement, send photos of the actuator, motor and controls nameplates: type designation, commission or order number, serial number and wiring diagram number. AUMA identifies the original build from the commission number. For a new actuator, add the valve type, required torque or thrust at the worst case, number of turns or swing angle, operating time, mounting flange to ISO 5210 or ISO 5211, stem or shaft dimensions, duty (open-close or modulating), supply voltage and frequency, control signals or fieldbus, and the hazardous-area marking required on site.

Facts checked against AUMA product information and the company history published by AUMA, October 2026.

Browse AUMA products by category: Valve Actuator, Industrial Communications.

FAQ

Questions about the AUMA TIGRON TR-M SIL Explosion-Proof SIL Actuator

Answers from our engineering team on installation, compatibility and integration.

01What is the torque range of the TIGRON TR-M SIL?

The manufacturer states 10 Nm to 1000 Nm for open-close and for modulating duty. The output speed range is 4 to 216 rpm, so the right unit depends on both torque and travel time.

02Which SIL level does the TIGRON TR-M SIL reach?

The safety functions are capable of SIL 2 at HFT=0 and SC=3, and up to SIL 3 when used with redundancy. The certification is by TUV Nord to IEC 61508 and ISO 13849.

03How many safety functions can be configured?

Up to four safety functions can be configured per device, with freely defined priority. They include safe opening and closing, the same with a timer function, safe stop and safe end position feedback.

04What is the ambient temperature range?

The stated range is -63 °C to +70 °C with IP68 enclosure protection and C5/CX corrosion protection. Confirm the final marking on the nameplate of the supplied unit.

05Which explosion-protection markings apply?

The page lists ATEX Ex db eb h IIC T4 Gb and Ex h tb IIIC T130 °C Db, matching IECEx, plus FM Class I Division 1 Groups B, C, D and Class II/III Groups E, F, G. Check the exact certificate for your order.