Description
The Siemens SQM5 is available in a wide range of torque ratings from 90 to 400 in-lbs. and running times of 8 to 50 seconds. A selection of exchangeable circuit boards provide a variety of functions including zero and span adjustment, parallel or master/slave operation, split range control, input signal override and selectable electronic linearization.
- Six easily accessible internal switches
- Auto/manual switch allows easy adjustments
- Externally visible shaft position indicator
- Highly modulating accuracy/rotational resolution
- Low hysteresis actuator with double-offset drive and potentiometer gearing
Features
• Two limit switches, plus up to four internal auxiliary switches
• Fully closed “economy position” switch
• Drive shaft and cam drum disengagement clutches
• Auto/manual switch, manual control forward/reverse toggle switch
• UL, CSA approved 24 and 110 Vac versions
• CE approved 220 Vac versions
• Field reversible clockwise (cw) or counterclockwise (ccw) operation
• Various torque ratings and running times available
• Selection of field exchangeable single-ended and dual-ended shafts
• Mounting brackets to replace competitive actuators
• Connections for both base and face mounting
• Low hysteresis actuator and potentiometer gearing
• Externally visible position indication
• Selection of input and output signals
• Zero and span adjustment
• Field exchangeable circuit boards and potentiometers
• Electronic damper linearization function
• Split range and selectable parallel or master/slave operation
• Adjustable input signal override function
Application
SQM5… actuators are uniquely suited for both industrial and commercial applications. The high level of accuracy permits precise modulating control of industrial process and process heating applications, often significantly enhancing performance and product quality.
In commercial and industrial burner applications requiring high turndown and reliable ignition, the auxiliary switches can be applied to create separate positions for burner ignition and low fire. In dual fuel applications, additional switches can be used to create separate high fire, low fire and ignition positions for each fuel. The economy position switch is used to drive the actuator to the full closed position when the burner is off.
In all applications, commissioning is simplified. Shaft and cam drum disengagement clutches allow for the quick manual alignment of the actuator shaft and switch cams. The forward/reverse toggle switch in combination with the auto/manual selector switch provides direct manual control.
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Price history
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