Siko SG32, Translation Of The Original Installation Instructions

Page: 27 / 36

SG32
Adjustment and Alignment English
SG32 · Date 23.07.2019 · Art. No. 85391 · Mod. status 189/19
27
5 Adjustment and Alignment
5.1 Potentiometer setting
When correctly connected and switched on, the unit displays the current
actual value.
The measuring range of the potentiometer is matched to the total pull-out
length of the wire. Ex works value 0 Ω is preset for the pull-out length of
0 mm (wire completely pulled in).
5.2 Alignment of the R/I transformer
Adjusting the trim potentiometer ( Fig. 10 )
Destruction of the trim potentiometer
` Cautiously adjust the SMD trim potentiometer.
If the device is equipped with two resistance-current converters, then the
potentiometer resistance is converted into a current of 4 ... 20 mA. Two-
wire technique is used. The measuring current is also used for feeding the
transducer.
Ex-works, the transducer is calibrated to standard values of the poten-
tiometer. The initial position 4 mA (Po) corresponds to the completely
pulled-in or pulled-out wire depending on the transducer variant. The
opposite wire position applies to the end position 20 mA (Pe). With the
transducer 1, these values can be adjusted to the actual initial and end
positions of the application by means of trim potentiometers Po1 and Pe1.
The same applies to transducer 2 when using trim potentiometers Po2 and
Pe2
1. Unscrew screws with
1
sealing disks
2
and open the cover
3
.
2. Adjust trim potentiometer Pe1
5
Pe2
6
and Po1
4
Po2
7
,see Bal-
ancing.
3. Close the cover
3
and fasten it using sealing disks
2
and screws
1
.
CAUTION