Rechner Sensors SW-600-M12/28-S Operating Instructions Manual page 13

The switching points S1 and S2 can be programmed as min. or max. switching points in each case. The value
of each switching point and the hysteresis (in %) for each can be adjusted independently.
S1 max. adjustment fig. 7
Value
Alarm range *
S1max
*Within the alarm range the red LED and the display flickers at the sensor head.
Before you set the switching points to a percentage, first you must know the flow range (cm/s) of your
process. As a factory setting the flow sensor shows on the display 0...100% for the range 0...150 cm/s (H
if for example your range is only 0...75 cm/s, an adjustment for the switching point at 80 % in this standard
setting would mean that the switching point will never be reached.
The display will then show max. 50 %.
The same is valid for the analogue output 4 (0)...20 mA.
The analogue output would go to max. ca. 12 (10) mA.
In order to get an optimal resolution, in which smaller current-alterations also show 0 ...100 % on the display,
the display range has to be changed in the code mode (see below).
For the following application example, the input would be 0.01 (see code mode) as start value and 0.50 as
end value in order to get the 0 ...100 % resolution.
How can one access the code mode?
Please note: Before you have access to the code mode, the Code 000 has to be changed into Code 111,
as follows:
From the adjustment position
Action:
Turn the ring-gap to the middle and then to Pos. 1
Turn the ring-gap to Pos. 2
Turn the ring-gap to the middle and then to Pos. 2
Turn the ring-gap to Pos. 1
Turn the ring-gap to Pos. 2
Turn the ring-gap to Pos. 1
Turn the ring-gap to Pos. 2
Turn the ring-gap to Pos. 1
Turn the ring-gap to the middle and then to Pos 1
Turn the ring-gap to the middle and then to Pos. 1
Turn the ring-gap to the middle and then to Pos. 1
Hyst.1
Time
S1 min adjustment fig. 8
Value
Alarm range *
Hysteresis S2 in %
Display indication:
Code 000
The first 0 flickers
Code 001
The second 0 flickers
Code 011
The third 0 flickers
Code 111
Filter response time (value 0.2 s - 3.2 s)
programmable
(OFF-Adjustment is possible)
Output Analogue 4 or 0...20 mA
programmable
Beginning 4 (0) mA of the display indication
(min. 0.01) programmable
End 20 mA of the display indication
(max. 1.00) programmable
Hyst.1 S1 min
Time
O).
2
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