Weidmuller DPATCX - Universal glavanically isolated signal converter - Handbuch (Seite 22)


Deadband(DBControl)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
. 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.
. Decrease the deadband (turn control anticlockwise) until the LED
extinguishes.
6. Check that the setpoint and deadband are set correctly.
Internalsettings(Alarmtypeandcoilenergisation)
To change the alarm type or coil energisation:
1. Remove the left hand side plate.
. Set the links according to the diagram (right).
. Replace the side plate.
CJCTrackingAdjustment(factorysetting)
The procedure for CJC tracking adjustment
is as follows:
1. Remove the electronics from the housing.
. Connect up the alarm according to the
table above.
. Set the thermocouple simulator to  % below the lowest
temperature in the range of the instrument, e.g., for a 0-400 °C
span, set the simulator to -8 °C.
4. Adjust VR1 on the personality card until the voltage between pins 8
and  of the personality card is 0.00 mV.
This completes the CJC tracking adjustment.
14
7
. . . . . .
8 9
VR1