KROHNE SU 600 Ex, Руководство по эксплуатации

Страница: 16 / 32

16
6 Setup with the integrated display and adjustment unit
SU 600 Ex • 4 … 20 mA signal conditioning instrument
30653-EN-150129
By briefly pushing the two keys simultaneously, you save your set-
tings. " Save " is briefly displayed.
6.2 Setup steps
Setup comprises mainly the adjustment of the measurement loop.
A scaling of the measured value for the LC display and the adapta-
tion of the relay switching points are further settings. Additional setup
steps would be, if necessary, setting an integration time (damping) to
steady the measured value or modifying the current output character-
istics.
To clearly denote the measuring unit, the supplied labels can be
inserted in the cover. In case several SU 600 Ex are used, each
measurement loop should be clearly labelled.
After being switched on, SU 600 Ex first of all carries out a short self-
check. The following steps are carried out:
•
Internal check of the electronics
•
Indication of the firmware version
•
The output signal jumps briefly to the set fault value
Then the actual measured value is displayed and the corresponding
current is transmitted to the current output.
The measured value indication shows the digital indication value and
also an analogue bargraph. Here, it is absolutely necessary that the
function switch is set to position [ 0 ] (" OPERATE ").
The following functions can be selected via the rotary switch:
•
0 : Measured value display and simulation
•
1 : Relay 1 switching point ON
•
2 : Relay 1 switching point OFF
•
3 : Relay 2 switching point ON
•
2 : Relay 2 switching point OFF
•
5 : Decimal point position of the scaling
•
6 : Scaling for 100 %
•
7 : Scaling for 0 %
•
8 : Switch over current output 0/4 … 20 mA
•
9 : Damping of the measured value (integration time)
•
A : Offset correction
•
B : Min. adjustment in percent through change of the level
•
C : Max. adjustment in percent through change of the level
•
D : Min. adjustment in mA without changing the level
•
E : Max. adjustment in mA without changing the level
•
F : No function
When a pressure transmitter is used, an offset correction should be
carried out first. These instruments are factory-set in a certain posi-
tion. If the pressure transmitter is now mounted in a different position,
its measuring range is shifted slightly. The zero point is readjusted by
carrying out the offset correction in uncovered (unpressurised) condi-
Setup
Switch-on phase
Measured value indica-
tion
Function switch
Offset correction