Regada ST 0, Инструкции по установке, обслуживанию и техническому обслуживанию

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ST 0, STR 0 15
Connecting with the master system:
The EA can be controlled with:
•
a built-in position controller
•
an external position controller
The actuator is connected in accordance with the wiring diagrams put into the actuator upper
cover. Electric connection is made through cable glands to the terminal boards. The terminal board
with six terminals (9) (Fig. 1) is designed for connection and control of the actuator and the terminal
board with three terminals (10) for connection of the transmitter. The installed set of capacitors (8)
allows starting of the actuator.
After electric connection it is recommended:
Check of wiring of the electric motor and the control part: Set the actuator into a mid-position.
Check the right direction of output shaft movement with pressing of the button „closing“ (on the manual
control box or on the test press-button box), and follow the output stem which should shift out from the
actuator. If not you check proper connection.
Check of the position switch: When the actuator is moving in the direction „opening“ switch the
contact of the switch with pressing of its switching spring. In case of proper connection the actuator
should stop. If any of the functions is not proper, check wiring of the switches in accordance with the
wiring diagram.
In the STR version with the built-in electronic controller it is needed to perform autocalibration for
assuring optimal functioning.
The procedure is as follows
Press the button SW1 for about 2 sec (i.e. till the D3 diode is got on) to set the controller to the
autocalibration mode. During this process the controller checks the feedback transmitter and the
sense of turning, puts the EA to the positions open and closed, measures inertia mass in the directions
"opening" and "closing", and loads the adjusted parameters into the EEPROM memory. In case that
during the initialisation process an error occurs (e.g. in connection or adjustment) the initialisation
process will be interrupted and the controller with the
D4 diode reports about the type of the error. Else
after finishing the initialisation process the controller is put into the regulation mode . If needed to
change adjusted parameters of the controller follow instructions given in the part Adjusting of actuator.
2.2 Dismantling
Before dismantling it is required to disconnect the EA from mains!
Do not connect and disconnect live connectors!
•
Disconnect the EA from mains phases.
•
Disconnect the leads from the EA terminal boards and loosen the cables from cable glands.
•
Loosen the fixing screws of the EA flange and of the coupling and disconnect the EA from the valve.
•
While sending the EA to be repaired put it into a package solid enough to avoid damages of the EA
during transportation.
3. Adjusting of actuator
Abide by safety measures!
The adjustment can be performed at a mechanically and electrically connected EA. This part
describes adjustment of EA to specified parameters in case that any unit of EA is reset.
Laying of adjusters of the control board is shown on Fig.1.
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