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Example: Current monitoring in the N
If the current in the N is greater than 100A for
60 seconds, digital output 1 should cut in for at
least 2 minutes.
The following programming steps have to be
undertaken:
1st Comparator
We select comparator group 1 for the limit
value monitoring, as it is the only one to affect
digital output 1. As only one limit value is
monitored we select Comparator A and pro-
gram it as follows:
The address of the measured value of compa-
rator A to be monitored.
Add 015 = 278 (current in the N)
The measured values for the comparators B
and C are filled with 0.
Add 020 = 0 (The comparator is inactive)
Add 025 = 0 (The comparator is inactive)
The limit value to be observed.
Add 013 = 100 (100A)
For a minimum on-time of 2 minutes, the dig-
ital output 1 is to remain connected in the event
of the limit value being exceeded.
Add 016 = 120 seconds
For the lead time of 60 seconds, overrange
should at least be applied.
Add 064 = 60 seconds
The operator for the comparison between the
measured value and limit value.
Add 017 = 0 (corresponds to >=)
2. Inputs and outputs
Terminal 12 is assigned the function digital
output 1.
Add 002 = 1 (digital output)
Fig.: Connection example for digital output 1.
External
Operating
voltage
K1
+24V=
11
12
13
UMG96S
+
-
230V AC
24V DC
Digital output 1
Result
If the current in the N is greater than 100A for
more than 60 seconds, digital output 1 cuts in
for at least 2 minutes. The relay K1 picks up.
If the memory profile 4 is selected for storing in
the data memory (option), the comparator re-
sults are saved with the date and time from ad-
dress 500.
Содержание UMG 96S 24V
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