SQM5 Combustion Reversing Actuator - PLC Provider Industrial Automation Supplier PLC HMI Drives

SQM5… reversing actuators are used for the positioning of flow control valves, butterfly valves, dampers, or any application requiring rotary motion. The SQM5… actuators accommodate control input signals of 4 to 20 mA, 0 to 135 , 0 to 10 Vdc, 0 to 20 mA, position proportional and floating control. The available output signals include 4 to 20 mA, 0 to 135 , 0 to 10 Vdc, 0 to 20 mA, and 0 to 1000 . SQM5… actuators are available with up to six internal, easily adjustable switches.

A selection of exchangeable circuit boards provide a variety of functions including auto/manual selector switch, manual forward/reverse toggle switch, zero and span adjustment, parallel or master/slave operation, split range control, input signal override, and selectable electronic linearization.

The SQM5… is engineered for precision. It is particularly well suited for applications requiring a high degree of modulating accuracy and repeatability. The SQM5… actuator may be mounted in any position. A selection of mounting brackets and shafts provides installation flexibility and allows for the simple replacement of most competitive actuators.

Table of Contents

SQM5 Reversing Actuator Feature

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

SQM5 Reversing Actuator Part Number

Product Number
110 V	220 V	24 V
SQM50.261R1G3
SQM50.261R1G3R
SQM50.261R1Z3
SQM50.264R1A	SQM50.264R2A
SQM50.264R1A0R
SQM50.264R1A3
SQM50.264R1G3R
SQM50.264R1G4	SQM50.264R2G4
SQM50.264R1Z3
SQM50.361R1G3
SQM50.361R1G3R
SQM50.361R1G7
SQM50.361R1Z3
SQM50.364R1G3
SQM50.364R1G3R
SQM50.364R1G4R
SQM50.364R1Z3
SQM50.461R1A
SQM50.461R1A3
SQM50.461R1G3
SQM50.461R1G3R
SQM50.461R1H3
SQM50.461R1Z3
SQM50.461R1Z7
SQM50.464R1A		SQM50.464R8A
SQM50.464R1A0R
SQM50.464R1A3
SQM50.464R1A3R
SQM50.464R1G3	SQM50.464R2G3	SQM50.464R8G3
SQM50.464R1G4
SQM50.464R1G3R	SQM50.464R2G3R
SQM50.464R1G7
SQM50.464R1G7R
SQM50.464R1H3		SQM50.464R8H3
SQM50.464R1H3R
SQM50.464R1Z3	SQM50.464R2Z3	SQM50.464R8Z3
SQM50.464R1Z3R
SQM50.467R1Z3R
SQM53.461R1Z3
SQM53.464R1A
SQM53.464R1A3
SQM53.464R1G3
SQM53.464R1G7
SQM53.464R1G7R
SQM53.464R1Z3
SQM53.464R2Z3
SQM53.467R1Z3
SQM53.467R1Z3R
	SQM53.467R2A3
SQM56.564R1A	SQM56.564R1G4
SQM56.564R1G7
SQM56.564R1H4
SQM56.564R1Z3
SQM56.664R1G3
SQM56.664R1G3R	SQM56.664R2G3R
SQM56.664R1H3
SQM56.664R1H3R
SQM56.664R1Z3
SQM56.664R1Z3R
SQM56.667R1A3R
SQM56.667R1G3
SQM56.667R1G7R
SQM56.667R1Z3

SQM5 Reversing Actuator 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.

Precautions for using SQM5 Reversing Actuator

SQM5 Reversing Actuator is a reversible actuator. The following are the precautions when using it:

Installation and connection:

Correct installation: The SQM5 actuator can be installed in any position. It can be installed through the four 1/4″-20 unC screw holes at the bottom corner of the actuator base, or by using the optional base mounting bracket.

Avoid impact: Do not subject the motor to impact, such as rough hammering or dropping, as it may cause failure.

Prevent foreign objects from entering: Do not allow metal shavings, metal wire ends, oil stains, dust, water or other foreign objects to enter the actuator or the control cabinet where the actuator is installed.

Ensure a stable connection: When installing the connecting rod, make sure all fasteners (such as fixing screws, bolts, etc.) are firmly tightened.

Operation and Debugging:

Manual/automatic switching: Verify whether the manual/automatic selection switch is in the manual position. If the drive unit is not in the minimum signal (4ma) position, press the silver shaft release button, manually rotate the actuator shaft and connecting rod to the minimum position, and then release the button to engage the shaft again.
CAM roller adjustment: Ensure that the “0” mark on the CAM roller position scale (the left side scale of the CAM roller) is aligned with the gray actuator position indicator pointer. If not aligned, press the release button of the CAM roller and rotate the CAM roller until it is aligned.
Electrical safety: All operations (assembly, installation, maintenance and repair, etc.) must be carried out by qualified professionals. Before starting all work within the connection range, disconnect all electrodes of the equipment power supply to ensure that the equipment does not restart and is not electrified. There is a risk of electric shock when the equipment is not disconnected.

Operating environment

Temperature range: The operating temperature range is generally from -20 ℃ to + 60℃, and condensation, icing and water erosion must not occur.
Environmental conditions: This actuator is not explosion-proof. Do not use it in flammable and explosive environments or in corrosive gases.

Other precautions

Equipment damage: If the equipment drops to the ground or is hit, it must not be used any longer, as even if there is no obvious damage on the surface, it may still affect its performance.
Wiring inspection: After each operation (assembly, installation, maintenance, etc.), check whether the wiring status complies with the regulations.

Conclusion

SQM5 Reversing Actuator is a compact, efficient and reliable hydraulic rack and pinion actuator used for precisely controlling the 90-degree opening and closing actions of valves. It is an indispensable basic component in industrial process automation, and has proven its value in numerous demanding applications with its robust design and outstanding performance.