Weidmuller DPATCX - Universal glavanically isolated signal co Manual de usuario descargar pdf (Pagina 22)

Deadband (DB Control) adjustment

The deadband control adjusts the point at which a tripped alarm resets.

This point will be above the setpoint for a low type alarm or below for a

high type. The procedure for adjusting the DB control is as follows:

1. Adjust the SET control

2. Set the deadband to maximum by turning the DB control fully

clockwise.

Trigger the alarm by setting the input signal to ‘full scale’ (for a high

type alarm) or ‘zero’ (for a low type alarm).

4. Set the input to the level at which the alarm should reset.

ecrease the deadband (turn control anticlockwise) until the LED

extinguishes.

6. Check that the setpoint and deadband are set correctly.

ternal settings (Alarm type and coil energisation)

To change the alarm type or coil energisation:

1. Remove the left hand side plate.

et the links according to the diagram (right).

3. Replace the side plate.

CJC Tracking Adjustment (factory setting)

The procedure for CJC tracking adjustment

is as follows:

Remove the electronics from the housing.

2. Connect up the alarm according to the

table above.

Set the thermocouple simulator to 2 % below the lowest

temperature in the range of the instrument, e.g., for a 0-400 °C

span, set the simulator to -8 °C.

Adjust VR1 on the personality card until the voltage between pins 8

and 9 of the personality card is 0.00 mV.

This completes the CJC tracking adjustment.

. . . . . .

VR1

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Weidmuller DPATCX - Universal glavanically isolated signal co Manual de usuario Pagina 22