User manual

Publication 1760-UM001A-EN-P

4-32 Drawing a Circuit Diagram with Pico

Both the setpoint value and the actual value correspond to the measured voltages.

The resolution of the voltage values from 0.0 to 10.0V dc is in 0.1V steps.

If the voltage at the input terminal is in the range of 10 to 24V dc, the comparator

value stays at 10.0V dc.

You can enter the setpoint values for a comparison while you are creating the circuit

diagram or in the parameter display in Run mode.

Typical application:

• Evaluating the analog values of sensors, e.g. to measure pressure or

temperature.

Example:

Analog comparator “A1” latches (sets) relay Q1 if the

actual value drops below the lower setpoint value of 7.1 V.

Comparator “A2” unlatches (resets) the relay if it rises

above the upper setpoint value of 7.5 V. Thus, the

difference (switching hysteresis) between the two voltage

setpoint values is 0.4 V.

The parameter settings are:

Figure 4.13 Timing Diagram:

A1 sets relay output Q1 (A) up to a voltage of 7.1V. The hysteresis (B) is between

7.1V and 7.5V. At 7.5V, A2 causes the relay to reset (C). Q1 drops out and does

not pick up again until A1 is set at 7.1V (D).

I1-A1------SQ1

A2------RQ1

ANALOG

7.1

7.5

7,5

7,1

[V]

A1 A2

ABC D

Output