RFLS–28
©
Dinel, s.r.o.
18
10.2. Evaluation unit
A special unit SSU-1212-D is designed for the evaluation of diagnostic modes, which can evaluate
the pulses generated by the sensor. It does not matter what state the sensor output is in (closed or
open). Based on the period of the generated pulse, the unit determines in which diagnostic mode
the sensor is and communicates information to the user.
10.1.3. Incorrect measurement
INDICATION: -
green
LED is dark
-
orange
LED: in the event of closed output the LED shines with periodic dim
-
ming (0.1 s)
in the event of open output the LED is dark with periodic lighting
up (0.1 s)
OUTPUT: a pulse with a width of 300 us with a period of
10 ms
is generated into the output signal
SENSOR STATUS: the sensor setting is OK, but the diagnostic indicates a problem with the meas
-
uring curve, which can be caused by a failure of any element of the sensor
10.1.4. Another failure of sensor
INDICATION: the state of both LEDs cannot be specified, as their function may be affected by a
control circuit error
OUTPUT:
the sensor does not generate any diagnostic pulses in the output signal
SENSOR STATUS: either it is a fault in the control circuit or a failure in the output part of the elec
-
trical circuit and these faults can be diagnosed only by a special version of the
SSU-1212-D
10.3. Function and status indication with diagnostic
LED indicator
colour
function
"RUN"
green
Measuring function indication
flashing
– (approx. 0.4 s) – correct function of level detection
dark
– incorrect installation or malfunction.
alternating flashing of the green and orange LED
– error in settings
simultaneous shine of green and orange LED
– when applying the
mag. pen, when the setting is confirmed
"STATE"
orange
Settings indication
permanent shine
– the sensor is closed
dark
– the sensor is open
3 short flashes
– settings confirmed
alternating flashing of the green and orange LED
– error in settings
simultaneous shine of green and orange LED
– when applying the
mag. pen, when the setting is confirmed
periodic extiction (0,1 s) in closed mode
- diagnosed function error
periodic lighting (0,1 s) in open mode
- diagnosed function error
