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A, analog value comparator/
threshold value switch
179
02/16 MN05013001Z EN
Figure 72:
Signal diagram for analog value comparator
1: Actual value on >I1
2: Setpoint value on >I2
3: Hysteresis on >HY
4: Switch contact (make)
5: Offset for value >I1
6: Actual value plus offset
• Range A: Compare >I1 greater than >I2
– The actual value >I1 increases.
– The contact switches when the actual reaches the setpoint
value.
– The actual value changes and falls below the value of the
setpoint value minus the hysteresis.
– The contact goes to the normal position.
• Range B: Compare >I1 less than >I2
– The actual value drops.
– The contact switches if the actual value reaches the setpoint
value.
– The actual value changes and rises above the value of the
setpoint value plus hysteresis.
– The contact goes to the normal position.
• Range C: Compare >I1 greater than >I2 with offset
– This example behaves as described in Range A. The offset
value is added to the actual value.
1
3
2
4
A
B
C
3
1
6
1
5
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