Tork TREA 0060, User Manual

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SMS-TORK Endüstriyel Otomasyon Ürünleri San. Tic. Ltd. Şti.
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5. ACTUATOR CONTROL
There are two ways to manually control the TREA Proportional Electric Actuator:
a. Manual Control with Handwheel
The handwheel control method is used in both on-off and proportional electric actuators.
This method is recommended when there is no electricity in the system or for emergencies
such as power failure and loss of control signal. The reason why the proportional electric
actuator is recommended in this way is that while the control signal is still applied to the
actuator, when the valve is turned by hand, the actuator will try to correct its position again
according to the control signal applied. Before this control is achieved, it is recommended
to bring the proportional electric actuator into manual mode with the help of switches on
the PCB board.
The handle in the center of the manual handwheel is pulled back so that the actuator
is in manual control. Manual handwheel is turned according to the opening or closing
direction. To switch from manual control to electrical control, the actuator is powered and
the automatic actuator switches itself when the motor rotates.
b. Manuel Control on PCB Card
If pin 1 of the 5 pin SETTINGS switch shown in Figure 12 is in the closed position (below),
the electric actuator is disconnected from the control signal and the electric actuator can
be controlled by pressing the OPEN and CLOSE buttons on the PCB.
Caution: To be able to automatically control the electric actuator with the control signal,
pin 1 of the SETTINGS switch must be in the ON position (above).
Figure 12. Control buttons and SETTINGS Switch