product description

STL-250

    feature of product

Thrust：250 kgf / 550 lbf
Weight：9.5 kg / 21 lb
Motor：15 W
Mounting Flange（ISO 5210）：F07
Max. Stroke：50 mm / 2 inch

Enclosure :

  • IP67、NEMA 4X：Water-proof and dust-proof enclosure.
  • Material：Dry powder coating aluminum alloy.
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Position Indicator :

  • All models are equipped with continuous mechanical position indicator. The external stem visual position indicator provides easily read and instantly available stem position.
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Modulating Controller :

  • Actuator can be operated according to input signal and provide the output signal for feedback.
  • Input signal：4-20mA, 1-5V or 2-10V.
  • Output signal：4-20mA or 2-10V.
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Adjustable Stroke :

  • Allow users to adjust actuator’s stroke to match valve stem’s stroke. (Refer to the specifications for stroke range)
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Motor :

  • All models are equipped with DC motor and provide low power consumption, high duty cycle and efficiency.(1500 starts per hour)
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Working Conditions :

  • Ambient temperature：-30℃ to +65℃ / -22℉ to +149℉
  • The humidity：30％ to 95％
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Over-thrust Protection :

  • If the output thrust of the drive exceeds of the drive rating, the actuator will shut off by two-step control. The two-step control is as follows:
  • First step : If the output thrust of the drive exceeds the rating, power supply will be turned off by limit switches.
  • Second step : If the limit switches fail, power supply will be turned off by electronic detector. (The function only applies to modulating controller actuator)
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Slow-speed operation :

  • Besides the standard operating speed, if slower operating speed is needed, please contact with our sales person.
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Conduit entrance :

  • standard : 1/2” NPT
  • option : M20 or 3/4” NPT
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Various voltage :

  • 24V AC/DC
  • 110/220V AC

● CE
● CSA
● RoHs

  • Space heater

    A space heater can increase the internal temperature and keep dry inside actuator to avoid the freezing lubricant and moisture causing actuator failure under low temperature or high humidity. Heater is not recommended if the ambient temperature is above 35℃/ 95℉. However, when the temperature varies much from day to night or between summer and winter, heater and thermostat (25±5℃ / 77±41℉) are recommended.

  • Heater thermostat

    The option can switch the heater off when the temperature inside the actuator is over 25°C / 77°F.

  • Floating controller

    An external switch is applied to provide either two-position or floating control to the actuator.

    Floating（L-250~L-500）
    The picture is based on AC 110/220V.

     

  • Floating controller

    An external switch is applied to provide either two-position or floating control to the actuator.

    Floating（L-1000~L-2000）
    The picture is based on AC 110/220V.

  • Potentiometer unit

    The option can be ordered with On/Off actuators. The selection has 1k or 5k ohm resistance values. It provides feedback signal for position indicator.

  • Communication Protocols

    Modbus (MODBUS and modulating control cannot service at the same time.)

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