Akytec ITP14, Руководство пользователя, Страница: 7 / 10

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Note:
Switching hysteresis: 0.05 x ( SP.Hi – SP.Lo ).
6.2 Alarm
If the control function Cnt is set and the alarm function d.FnC = ON, the display blinks with a
frequency of about 2 Hz when the output is switched on (see Fig. 6.1).
6.3 Filter
Undesirable signal fluctuations can be suppressed through the adjustable filter in the
parameter
td “Filter time constant” (see Fig. 6.2 and Table 7.2).
The filter time constant can be set within the range 0…10 seconds. The higher the value, the
slower the display reaction to changes of the input signal and the lower the susceptibility to
interference is. The filter is deactivated if
td = 0.
Fig. 6.2 Filter time constant
6.4 Square root function
The function is intended for transmitters with the square characteristic. To enable the
function set the parameter
Sqrt = ON.
6.5 Error
Table 6.1 Displayed errors
Display
Possible cause
Remedy
Signal Threshold
Eг.1
Measured value error
- -
Check the input signal.
Check the sensor and
connection lines.
Contact the Technical
Support of akYtec
GmbH.
LLLL
Measured value is
below the lower limit for
the selected signal
0-5 mA I < -0.2 mA
Check the input signal
0-20 mA I < -0.2 mA
4-20 mA I < 3.8 mA
0-10 V U < -0.1 V
2-10 V U < 1.5 V
HHHH
Measured value is
above the upper limit for
the selected signal
0-5 mA I > 5.5 mA
Check the input signal
0-20 mA I > 22 mA
4-20 mA I > 22 mA
0-10 V U > 11 V