Weidmuller DPARTD - Universal glavanically isolated signal co Manual de usuario descargar pdf (Pagina 21)

VR1

. . . . . . . .

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.

Decrease the deadband (turn control anticlockwise) until the LED

extinguishes.

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

nternal settings (Alarm type and coil energisation)

To change the alarm type or coil energisation:

1. Remove the left hand side plate.

2. S

et the links according to the diagram (right).

3. Replace the side plate.

Lead Length Compensation Adjustment (factory setting)

Note: you will require an accurate 100 Ω resistor (in addition to the

requirements above). The procedure for adjusting this control is:

1. Remove the electronics from the housing.

Connect up the alarm according to the

table above.

. Connect the 100 Ω resistor between

terminal 4 and the simulator Bsense

connection.

4. Set the RTD simulator to 0 °C.

Adjust VR1 on the personality card until

the voltage across terminals 2 and 3 of

the instrument is twice that across the

resistor.

This completes the adjustment.

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Weidmuller DPARTD - Universal glavanically isolated signal co Manual de usuario Pagina 21