AUMA Electric multi-turn actuators SA 07.1 - 16.1_SAR 07.1 - 16.1 MATIC AM 01.1 - 02.1 - Manual (Page 43)

21.4 Positioner adjustment for end position OPEN (standard version)
.
Run multi-turn actuator by pressing push button (local controls) to end posi-
tion OPEN .
.
Connect voltmeter to measuring points MP2 and MP1 for measuring the
actual value E2:
When position feedback is set correctly, the voltmeter shows approx. 5 V.
If measured value is not correct:
Adjust position feedback according to clause 16. and 17. and repeat
“positioner adjustment”.
.
Connect max. command signal (nominal value E1) = 20 mA.
.
Connect voltmeter to measuring points MP4 and MP3 for measuring the nom-
inal value E1:
For a nominal value of 20 mA, the voltmeter shows 5 V.
If measured value is not 5 V:
Check the externally supplied command signal E1.
21.5 Setting the sensitivity
.
Set selector switch at the local controls to position REMOTE.
.
Set command signal E1 according to label on cover plate (see figure AH).
The sensitivity (
Δ E / dead band) is set to maximum value (2.5 %) in the fac-
tory.
.
The deadband can be increased by turning the potentiometer
Δ
E (P9) clock-
wise. Left stop = small dead band (= high sensitivity). For a precise setting of
the dead band, a set point device with setting options in the 0.1 mA range is
required.
.
A better sensitivity ( Δ E
min
= 0.25 %) can be achieved by turning the potentiom-
eter P7 (sens) clockwise.
When setting E, the following must be observed:
If the number of starts is too high, this will lead to unnecessary
wear at the valve and actuator. Therefore the maximum possible
dead band acceptable for the process must be set.
To prevent exceeding the max. permissible number of starts (refer to Technical
data sheets for modulating actuators) in extreme cases, a pause time between
0.5 s (left stop) and 10s (right stop) may be set with the potentio-
meter “t-off” (P10).
43
Multi-turn actuators SA 07.1 – SA 30.1/ SAR 07.1 – SAR 30.1
Operation instructions with actuator controls AUMA MATIC AM 01.1 / AM 02.1
If
LED display:
(refer to figures AG and AH)
Then
Required setting in end position OPEN:
(refer to figures AG and AH)
the LEDs are not illuminated
Turn potentiometer “max.” (P4) slowly counterclockwise until
LED
(V28 green) is illuminated
LED (V28 green)
is illuminated
Turn potentiometer “max” (P4) clockwise until LED (V28 green)
is no longer illuminated.
Then turn potentiometer “max” (P4) slowly counterclockwise until
LED
(V28 green) is illuminated
LED (V27 yellow)
is illuminated
Turn potentiometer “max” (P4) slowly counterclockwise until
LED
(V27 yellow) is no longer illuminated and
LED (V28 green) is illuminated
Table 9