Torque Switching
Running Indication
Torque Switching
Functions
directions.
can be used as running indicator.
The torque switching enables to switch off the
actuator when pre-determined torque is
reached instead of a defined position. The
torque switching works on principle of sliding
Axial displacement of worm proportional to
thrust is transmitted to torque switches.
Torque switches operate in closing & opening
directions. The required tripping torque can be
easily set on the graduated dial. If limit switch
cut off is selected prior to torque switch, then
For tight seating of certain valves, the actuator
must be operated to end position CLOSED
with defined force. Such operation can be
carried out by torque seating. Limit seating is
worm.
torque switch serves as overload protection.
commonly used in the end position OPEN.
When torque seating is used at end position,
limit switches can be used for signalization.
Therefore actuator controls can differentiate
whether actuator was switched off by torque
switch or by limit switch. Micro switches of
torque switching are provided with 1 NO + 1 NC
or 2 NO + 2 NC contacts for both open & close
Blinker switch is provided in the actuator and
10
To Next Page
Loading...
Need help?
General
