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Setting Potensiometer

Setting potentiometer

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0% found this document useful (0 votes)
80 views4 pages

Setting Potensiometer

Setting potentiometer

Uploaded by

Sarah Than
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Multi-turn actuators SA 07.1 - SA 16.1 / SAR 07.1 - SAR 16.

1
Operation instructions AUMA MATIC

Figure L
Indicator disc Cover

Mark

13. Setting of the potentiometer (option)

.. Move valve to end position CLOSED.


Remove switch compartment cover and, if provided, pull off indicator disc

. as described under clause 8, page 11.


Turn potentiometer (R2) clockwise to initial position.
End position CLOSED corresponds to 0 %, end position OPEN to 100 %.

Due to the ratio of the reduction gearings for the position


transmitter the complete resistance range is not always
utilized for the whole travel. Therefore an external possibility
for adjustment (setting potentiometer) must be provided.

.. Perform fine-tuning of the zero point at external setting potentiometer.


If applicable, press indicator disc on shaft and perform setting as

. described under clause 12.


Clean sealing face, check O-Ring, apply a thin film of non-acidic grease to

. sealing face.
Fit and fasten switch compartment cover.

Figure M

Cover
plate

R2

T P

15
Multi-turn actuators SA 07.1 - SA 16.1 / SAR 07.1 - SAR 16.1
AUMA MATIC Operation instructions

14. Setting of the electronic position transmitter RWG (option)

– For a remote indication or external control –

The electronic position transmitter is set in the factory according to the sig -
nal range stated in the purchase order. Perform a subsequent adjustment
according to subclauses 14.1 or 14.2.

After mounting the actuator to the valve, check setting by measuring the
output current at the designated measuring points (see subclause 14.1 or
14.2) and re-adjust, if necessary.

Table 2

Technical
RWG 4020
data
MSP... KMS TP . 4 . / . .
MSP... KMS TP . . 4 / . . .
Wiring .
diagrams MSP... KMS TP . 5 . / . .
(requires 2 external wires)
(requires 2 external wires)
3-/ 4-wire system
2-wire system
Output current I 0 - 20 mA, 4 - 20 mA 4 - 20 mA
internal supply external supply
Supply
Uv 24 V DC 14 V DC + (I x RB),
voltage
max. 30 V
Max. input I 24 mA at 20 mA 20 mA
current output current
Max. load RB 600 (Uv - 14 V) / 20 mA

Figure N: Position transmitter board


max
(0/4 mA) (20 mA)
N R2 M

3- and 4- wire system Measuring Measuring-


point 1 point 2
+
2- wire system
0/4 - 20 mA
For change-over wiring also needs to be changed

For inverse operation interchange the connections 7 (red/RD) and 5


(black/BK) at position transmitter board (figure N).

16
Multi-turn actuators SA 07.1 - SA 16.1 / SAR 07.1 - SAR 16.1
Operation instructions AUMA MATIC

..
14.1 Setting for 2-wire system 4 - 20 mA and 3- /4-wire system 0 - 20 mA
Connect voltage to AUMA MATIC.

.
Move valve to end position CLOSED.
Remove switch compartment cover and, if provided, pull off

.
indicator disc as described under clause 8, page 11.
For actuators with measuring points not accessible, remove

.
cover plate (figure O1).
Connect ammeter for 0 - 20 mA to measuring points (figure N,
page 16 or figure O1).
In end position CLOSED of 3- or 4-wire system, the value
must be 0 mA, for 2-wire system it must be 4 mA after setting.

The circuit (external load) must be connected (observe


max. ext. resistance R B), or the appropriate poles at the
AUMA plug/socket connector must be linked (refer to
wiring diagram MSP...KMS TP...), otherwise it is not
possible to measure a value.

. Turn potentiometer (R2) clockwise to initial position.

. Turn potentiometer (R2) whilst decreasing output signal until stop is felt.
Turn trimmer potentiometer (N) clockwise until output current starts to

. increase.
Turn back trimmer potentiometer (N) until a residual current of
approx. 0,1 mA (or 4,1 mA in case of 2-wire system) is reached. This

.. ensures that the signal remains above the dead and live zero point.
Move valve to end position OPEN.

. Set to end value 20 mA with trimmer potentiometer (M).


Approach end position CLOSED anew and check minimum value (0 mA

.. or 4 mA). If necessary, correct the setting.


In case cover plate (figure O1) has been removed, fit anew.
If applicable, press indicator disc on shaft and perform setting as

. described under clause 12, page 14.


Clean sealing face, check O-Ring, apply a thin film of non-acidic grease to

. sealing face.
Fit and fasten switch compartment cover.

If the maximum value can not be reached, the selection of


the reduction gearing must be checked.

Figure O1
N (0/4 mA) M (20 mA)
R2

Cover plate

Measuring Measuring point 2 ( )


point1 (+) 0/4 – 20 mA
0/4 – 20 mA

17
Multi-turn actuators SA 07.1 - SA 16.1 / SAR 07.1 - SAR 16.1
AUMA MATIC Operation instructions

14.2 Setting for 3- / 4- wire system 4 - 20 mA


.. Connect voltage to AUMA MATIC.

. Move valve to end position CLOSED.


Remove switch compartment cover and, if provided, pull off

. indicator disc as described under clause 8, page 11.


For actuators with measuring points not accessible, remove

. cover plate (figure O2).


Connect ammeter for 0 - 20 mA to measuring points (figure N,
page 16 or figure O2).

The circuit (external load) must be connected (observe


max. ext. resistance R B), or the appropriate poles at the
AUMA plug/socket connector must be linked (refer to
wiring diagram MSP...KMS TP...), otherwise it is not
possible to measure a value.

. Turn potentiometer (R2) clockwise to initial position.

. Turn potentiometer (R2) whilst decreasing output signal until stop is felt.
Turn trimmer potentiometer (N) clockwise, until output current starts to

. increase.
Turn back potentiometer (N), until a rest current of approx. 0,1 mA

.. is reached.
Move valve to end position OPEN.

.. Set to end value 16 mA with trimmer potentiometer (M).


Move valve to end position CLOSED.
Set potentiometer (N) from 0,1 mA to initial value 4 mA.
This results in a simultaneous shift of the end value by 4 mA, so that the

. range is now 4 - 20 mA.


Approach both end positions anew and check setting. If necessary,

.. correct the setting.


In case cover plate (figure O2) has been removed, fit anew.
If applicable, press indicator disc on shaft and perform setting as

. described under clause 12, page 14.


Clean sealing face, check O-Ring, apply a thin film of non-acidic grease to

. sealing face.
Fit and fasten switch compartment cover.

If the maximum value can not be reached, the selection of


the reduction gearing must be checked.

Figure O2
N (0/4 mA) M (20 mA)
R2

Cover plate

Measuring Measuring point 2 ( )


point1 (+) 0/4 – 20 mA
0/4 – 20 mA

18

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