22 STR 0PA
Warning 1: When the input control signal is set to the value 0 ÷ 20 mA (0÷10V), or 20 ÷ 0 mA (10÷0V)
and the input control signal fails, then the EA keeps the position as with a 0 mA input signal (EA
doesn’t recognise between input signal fail and 0 mA (0 V) input signal).
Warning 2: Calibration process doesn’t run if triggered in time when the EA is overloaded (EA is
switched off from overloading - i.e. one of the power switches S1 or S2 is switched on). In such case,
the EA must be moved in a position in which no one of the S1 and S2 power switches is switched on, and to
start the calibration again.
Warning 3: Calibration must be completed after each stroke adjustment by more than 10%.
Warning 4: Operate adjusting button P on control unit to activate the calibration process or from the programme
once the EA is connected to the PC. All auto-calibration start methods have been equal.
Rotation direction definition of the electric actuator´s output element
The output rod of the actuator while rotating in the direction “Close“ protrudes from the actuator.
It means that the direction of rotation of the actuator is set as clockwise.
In case the direction of rotation shall be changed the parater „Direction of rotation of the actuator“ must
je adjusted as anticlockwise. This parameter can be adjusted through the PC only by use of the EHL
Explorer SW. The PC must be connected to the actuator via communication cable and the window
“Parameters“ used for direction adjustment.
3.3 Putting an EA into operation when the EA is set up and connected with the
armature already in the production plant (starting the calibration)
If EA is delivered from manufacturing plant joined with valve, or with control device, calibration
must be performed to ensure correct operation, under actual pipeline conditions.
The procedure is as follows:
- fit the given assembly into the specified technology complex
- connect the EA on the supply voltage electrically according to the wiring diagram and chapter
Electrical connection....
- introduce the EA into an half-position (see Note 2 presented above)
- switch on the supply voltage
- start the EA calibration by pressing the P button on the control unit for 2 seconds as
minimum until LED ERROR (red), LED MENU (green) and LED PAR (red) light up – see also
the procedure in the separate attachment No.74 1053 02
- release the P setting button
- after releasing the P button the calibration procedure starts – inertia measuring
- after the calibration procedure is finished, the EA is prepared for its operation and starts to
response to control inputs
- if changes to some parameters would be necessary, proceed please according to the
instructions given in the separate attachment No. 74 1053 02.
3.4 Putting an EA into operation when the stroke and parameter setting done by the producer
suit to your needs
When an EA is delivered from the producer without armature and the setting of stroke (stroke end
positions) and other parameters done by the producer suit Your needs, please proceed as follows:
- connect the EA with the armature to be controlled (according to chapter 2) and fit this
assembly into the specified technology complex
- connect the EA electrically according to the wiring diagram and chapter Electrical connection ...
- introduce the EA into an half- position (see Note 2 presented above)
- switch on the supply voltage
- start the EA calibration by pressing the P button on the control unit for 2 seconds as minimum
until LED ERROR (red), LED MENU (green) and LED PAR (red) light up – see also the
procedure in the separate attachment No. 74 1053 02
- release the P setting button
- after releasing the P button the calibration procedure starts
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