AUMA FQM 07.1 Fail-Safe Unit for SQ 07.2 Actuators

Overview

AUMA FQM 07.1 is the second fail-safe unit in the range and doubles the minimum torque of the FQM 05.1 to 300 Nm. It is paired with the SQ 07.2 part-turn actuator, and it offers the shortest fail-safe time span of the family, 8 s to 26 s for a 90 degree stroke. For emergency shut-down valves where speed of closure matters, this is the fastest option AUMA documents.

Seven Star LLC, the official trusted supplier and regional supplier for AUMA, supplies the AUMA FQM 07.1 to oil, gas, power and water projects across Oman and the GCC. Our team works with safety engineers in Muscat, Sohar and Salalah to document the safe-state requirement, trigger logic and valve torque before an order is placed.

Faster Emergency Action at 300 Nm

The AUMA FQM 07.1 uses stored mechanical energy to move the valve when the ESD input or the mains supply triggers the function, so the emergency stroke does not depend on any electrical supply. The fail-safe time is set at the factory in the range of 8 s to 26 s, and it lengthens as the valve torque demand rises. The minimum torque is 300 Nm, so a valve whose torque in the safe direction is lower than that will move as designed, while one that needs more cannot be served by this size.

In normal operation the SQ 07.2 provides the motor stroke at operating times of 5.6 s to 32 s, which gives the process a fast routine movement and the safety function a separately defined emergency time. A ready signal contact and two galvanically isolated end position switches report the unit state, each rated for 0.1 A at 30 V DC. Documented lifetime is 500 fail-safe operations, which should be counted against any proof-test plan that includes full-stroke tests.

Engineering Design of the AUMA FQM 07.1

The standard valve attachment of the AUMA FQM 07.1 is EN ISO 5211 F10, with F07 as the option, which is the reverse of the FQM 05.1. The coupling accepts shafts up to 25.4 mm cylindrical, 22 mm square or 22 mm two-flat. The swing angle can be adjusted between 80 and 96 degrees, and the unit weighs about 66 kg without actuator and controls.

At roughly 66 kg without actuator and controls, the FQM 07.1 is only slightly heavier than the 05.1. Because F10 is the standard flange, the higher 0.5 g vibration rating at 10 to 200 Hz applies by default, and choosing F07 drops it to 0.3 g. The unit installs vertically or horizontally with a support, never pointing downward. AUMA specifies IP68, KS corrosion protection with a KX option, and -30 °C to +70 °C for the standard unit (option -40 °C to +60 °C), while the explosion-proof FQMEx 07.1 is rated -30 °C to +60 °C.

Key Features

The AUMA FQM 07.1 offers the quickest fail-safe action in the FQM family together with a 300 Nm torque reserve.

• A 300 Nm minimum torque doubles the reserve of the smallest unit for moderate-torque valves.
• The 8 s to 26 s fail-safe time is the fastest range of the family.
• F10 is the standard flange, which gives the higher 0.5 g vibration rating.
• The initiation criterion, ESD signal, mains failure or both, is chosen when the order is placed.
• A ready signal and isolated end position switches report unit state at 0.1 A and 30 V DC.
• The energy store is rated for 500 fail-safe operations.
• Pairs with the SQ 07.2 and AC controls as a modular package.
• FQMEx 07.1 is the Zone 1 version, documented in its own data sheet.

Selection Guidance for the AUMA FQM 07.1

With the AUMA FQM 07.1, begin from the safety requirement specification: required safe position, response time, and proof-test interval. Compare the 8 s to 26 s fail-safe time with the closing time allowed by the process hazard analysis, and remember that heavier valves take longer. Then confirm the valve torque against the 300 Nm minimum, and the flange against F10 or F07.

As the unit adds about 66 kg above the valve, the valve and pipe supports should be reviewed by the piping designer before installation.

Industrial Applications

The AUMA FQM 07.1 suits emergency isolation of mid-small valves on fuel gas feeds, flare knock-out drain lines, boiler feedwater and cooling water headers, where a power failure must close or open the valve without delay. Because its fail-safe time begins at 8 s, it is also used where a trip must be completed quickly to prevent a hazardous situation from developing.

In Oman and the GCC, Seven Star LLC supplies the FQM 07.1 on request with local support.

Neighbouring sizes: AUMA FQM 05.1, AUMA FQM 10.1 and AUMA FQM/FQMEx fail-safe unit family.

For the drive side see the AUMA SQ part-turn actuator range, for controls the AUMA MATIC AM/AC integral actuator controls, and for Zone 1 duty the AUMA SQEx explosion-proof part-turn actuator.

Technical Specifications

Key figures for the AUMA FQM 07.1 as listed by AUMA; the explosion-proof FQMEx 07.1 is documented in its own sheet with a lower upper ambient limit.

Request a Quote for AUMA FQM 07.1

Procurement and safety teams in Oman and the GCC can request a priced offer for the AUMA FQM 07.1 by sending the valve datasheet, the safe-state requirement and the trip signals. The offer will include the matching SQ 07.2 and controls, and the data sheet is available for download here. Seven Star LLC supplies AUMA products in Oman and the GCC and quotes the AUMA FQM 07.1 on request.