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General| Brand | Bernard Controls |
|---|---|
| Model | ST Series |
| Category | Controller |
| Language | English |
Actuator should be secured directly to the valve using proper bolts or via a proper interface.
All ST range actuators are provided with an automatical declutchling handwheel, with motor drive priority.
This chapter does not concern the ST INTELLI+. It is equipped with absolute position encoders.
Manually drive the valve to the closed position. Set the cam of the «CLOSED>> travel limit switch.
The travel limit switch «CLOSED>> can be used to shunt the «Opening>>> torque limiter contact.
The actuator is delivered with a factory calibrated torque limit system.
The indicator disc is driven by the camblock system.
The actuator signal feedback potentiometer is driven by the travel camblock system.
The TAM transmitter delivers a 0/4 to 20 mA signal linearly proportional to the valve position.
Close the cover immediately after start-up and make sure that the cover seals are not damaged.
All ST actuators are lubricated for lifetime and therefore require no specific maintenance.
The actuators should therefore be stored under a shelter in a clean, dry place and protected from wide changes in temperature.
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