Akytec ITP14-G Manuel de l'utilisateur - Page 7

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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.

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

Eг.1

LLLL

HHHH

akYtec GmbH · Vahrenwalder Str. 269 A · 30179 Hannover · Germany Tel.: +49 (0) 511 16 59 672-0 ·

Fig. 6.2 Filter time constant

Possible cause

Measured value error

Measured value is

below the lower limit for

the selected signal

Measured value is

above the upper limit for

the selected signal

Signal

Threshold

0-5 mA

I < -0.2 mA

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

0-5 mA

I > 5.5 mA

0-20 mA

I > 22 mA

4-20 mA

I > 22 mA

0-10 V

U > 11 V

Remedy

Check the input signal.

Check the sensor and

connection lines.

Contact the Technical

Support of akYtec

GmbH.

Check the input signal