STR 0PA 17
Notes:
1. Wires of input control signals to controller and output signals from current converter it is
necessary to lead them separately with thrust wires or it is necessary to use shielded wires.
2. Together with EA are delivered sealing cable glands which make possible enclosure protection
IP68 in case of tight mounting onto supply lead. For required enclosure it is necessary to use
rings according to real diameter of cable and required thermal resistance.
3. When fastening the cable it is necessary to count with allowable diameter of bending so it will not
be damaged or there will not be deformation of sealing element of cable bushing. Supply cable
have to be fastened to solid construction furthest 150 mm from cable glands.
4. Sealing areas of cover of the control part have to be clean before repeated fastening.
5. Reversation of EA is guaranteed when time interval between switch-on and switch-off the power
supply for reverse direction movement of output part is min. 50 ms.
In version STR 0PA it is necessary to do autocalibration in operation according by
enclosure assure the optimal function.
Abide by instructions of valve producers, whether switching-off in end positions is to be
realised with position or thrust .
2.2 Dismantling
Before dismounting it is required to disconnect the EA from power supply!
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
Attention! See the Chapter 1.2.3 Requirements for Professional Qualification …
Keep safety regulations!
EA are delivered adjusted onto parameters according to nameplate from Production plant.
Adjustment is made onto mechanical and electrical connected actuator. This chapter describes
how to set up the EA to parameter values within a range applicable for the software. Location of
adjustable parts of control board is on Fig. 6.
Adjusting is possible:
- by operating the control unit buttons (see Fig. 6);
- through the programme once the EA is connected to the PC using the communication cable.
For the specific adjustment procedure or individual parameters reset see individual appendixes 74
1053 02.
For facilitating the simple setting of required operation parameters, the control unit is equipped with :
• four setting buttons: MENU, P, O, C
• six signal lamps according (LED diode) to Fig. 6
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