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In case the correction of the current 20 mA was considerable repeat adjustment for 4 mA and 20 mA once again.
Disconnect the milli-ammeter. The screw secured by a drop of varnish situated nearer to the centre must not be turned.
Retighten the countershafts fixing the transmitter shim plates and secure with a drop of varnish against loosening.
After completing the adjusting procedure, check voltage on the transmitter terminals using a voltmeter.
The voltage should fall within the range of 9 – 16 V with current 20 mA.
Note:
The transmitter characteristics has two branches: the descending one and the ascending one with respect to
the CLOSE position. The characteristics is selected by turning the transmitter body.
Current position transmitter DCPT3 – setting
1. Set of end-limit positions
Before starting the setting, verification must be carried out that the end-limit positions are within the range
60° – 340° of revolution DCPT3. Otherwise, after setting, an error arises
(LED 2x).
1.1. Position “4 mA”
Set the drive into the required position and press the push-button
“4” until LED blinks
(about 2 s)
.
1.2. Position “20 mA”
Set the drive into the required position and press the push-button
“20” until LED blinks
(about 2 s).
2. Setting of sense of rotation
The sense of rotation is specified by viewing from the side of the panel DCPT3.
2.1. Rotating anti-clockwise
Press the push-button
“20”, then the push-button “4” and keep them depressed until LED blinks.
2.2. Rotating clockwise
Press the push-button
“4”, then the push-button “20” and keep them depressed until LED blinks.
When the sense of rotation is changed the end-limit positions “4 mA” and “20 mA” remain valid but the working
range
(track DCPT3)
between these points is changed to a complement of the original working range. In this
way, the permitted working range can be exceeded
(LED 2x)
– it can be smaller than 60°.
3. Error messages
In case of an error the diode LED blinks an error code:
1x
Sensor position out of working range
2x
Working range incorrectly set
3x
Off the tolerance level of magnetic field
4x
Wrong parameters in EEPROM
5x
Wrong parameters in RAM
4. Calibration of currents 4 mA and 20 mA.
On switching-on the power supply, keep the push-buttons
“4” and “20” depressed and release them after a single
blink of LED. In this way the option menu 4.1 Calibration of current 4 mA is entered.
4.1. Calibration of current 4 mA
Connect the ammeter to testing terminals. Press the push-button
“20”. Keep depressed the push-button to evoke
the auto-repeat of current decrease. Release the push-button to make record of the present value.
4.2. Calibration of current 20 mA
Connect the ammeter to testing terminals. Press the push-button
“4”. Keep depressed the push-button to evoke
the auto-repeat of current increase. Release the push-button to make record of the present value.
4.3. Switching-over between option of calibration 4 mA and 20 mA
Entry of option of calibration 4 mA:
Press the push-button
“4”, then the push-button “20” and keep them depressed until LED blinks.
Entry of option of calibration 20 mA:
Press the push-button
“20”, then the push-button “4” and keep them depressed until LED blinks.
