Field Instruments

General

Electronic motor driven actuators for two-position, three-position, and modulating control, nominal torque 7 Nm, with spring return, self-centering shaft adapter, mechanically adjustable span between 0...90°, prewired with 0.9 m long connection cables.

Type-specific variations with adjustable offset and span for the positioning signal, position indicator, feedback potentiometer and adjustable auxiliary switches for supplementary functions

Features

• For damper areas up to 1.5 m2, friction-dependent.
• In ventilation sections where the actuator must move to the zero position (emergency position) during power failure.
• For dampers having two actuators on the same damper shaft (tandem-mounted actuators or Powerpack). 

Specifications

• Make: Siemens
• Model: GMA166.1E
• Torque: 7 Nm
• Air damper area: 1.5 m²
• Angular rotation: 90°
• Power consumption: 5 VA, 3.5 W
• Positioning time: Open:90 s, Close:15 s
• Cable length: 0.9 m
• Positioning signal: DC 0…10 V
• Spring return function: Yes
• Degree of protection: IP54
• Ambient temperature, operation: -32…50 °C
• Medium temperature: -32…50 °C
• Ambient humidity, operation: 95 % RH.
• Dimensions (W x H x D): 63 x 212 x 81 mm
• Operating voltage: AC/DC 24 V
• Position feedback: None
• Auxiliary switch: 2