Weidmuller DPADRT - Universal glavanically isolated signal co Instrukcja Użytkownika Pobierz pdf (Strona 20)

• Calibration and Setup

General

The SET (setpoint) and DB (deadband) adjustments control the

setpoint and hysteresis for each alarm channel. Internal jumpers

control the alarm type and relay coil energisation.

quipment requirements

• Two accurate decade resistance boxes. Note set Resistance box 2

to the minimum value of R2. Resistance box one is adjusted to give

the required difference signal.

• F

lat bladed screwdriver (blade width less than 2.54 mm / 0.1 inch)

Note 1: Resistance box 2 can be replaced by an accurate resistor

equal to the minimum amount of R2 (the smaller resistor).

Terminal connections for calibration

Signal type Terminal

Input signal

Common 2

Resistance Box 2 3

Resistance Box 1 4

Power supply

Neutral (−) 9

Live (+) 10

Setpoint (SET Control) adjustment

The SET controls for each channel are on the front panel of the

transmitter. For both high and low type alarms you turn the control

clockwise to trip the alarm and anticlockwise to reset it. The procedure

for adjustment is as follows:

1. Connect up the instrument according to the table above.

2. S

et the inputs to the trip point.

3. Turn the SET control anti-clockwise until the LED extinguishes.

4. Slowly turn the SET control clockwise until the LED lights up.

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Weidmuller DPADRT - Universal glavanically isolated signal co Instrukcja Użytkownika Strona 20