14 ST 1, STR 1
Abide by instructions of valve producers, whether switching-off in limit positions is to be
realised with position or thrust switches!
After electric connection perform checking of function:
• Put the valve manually to a mid-position.
• Connect the EA electrically for the chosen direction of movement and watch the output part movement.
• If it does not correspond change the order of feeding phases (valid for 3x400/3x380V version), or change
leads of the feeding phase to the corresponding terminals (valid for 230V/220 version).
• Check the control unit switches connection with switching consequently the contacts of the corresponding
switches with pressing the control elements at running of the EA (at proper connection) to the chosen
direction. In case of proper connection the EA stops or indicates the adjusted position according to switching
of the chosen switch. If any of the functions is fault check connecting of the switches according to wiring
diagrams.
In the STR 1 version with the built-in electronic controller (Fig.9) 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.
3.2 Dismantling
Before dismantling it is required to disconnect the EA from mains!
Do not connect and disconnect live connectors!
• Disconnect the EA from mains.
• Disconnect the leads from the EA terminal boards and loosen the cables from bushings. Pull out the
connectors in case of the connector version.
• Loosen the fixing screws of the EA flange and coupling screws 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.
!
!
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