janitza UMG 96 RM-EL, Operating Instructions And Technical Data

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UMG 96RM-EL
Example: Current monitoring in the neutral line
If the current in the neutral line is greater than 100 A for
60 seconds, the result of the comparator group 1 should
be latched for at least 2 minutes.
The following must be programmed:
1. Comparator group 1
Select comparator group 1 for the limit value
monitoring. Since only one limit value is monitored,
select comparator A and program it as follows:
The address of the measured value to be monitored
by comparator A:
Address 110 = 866
(address of the current in the neutral line)
The measured values for the B and C comparators
are set to 0.
Address 116 = 0 (the comparator is inactive)
Address 122 = 0 (the comparator is inactive)
The limit value to be observed.
Address 108 = 100 (100 A)
For a minimum exposure time of 2 minutes, the result
of the comparator group 1 should be latched if the
limit value is exceeded.
Address 111 = 120 seconds
For the lead time of 60 seconds, any exceeding
should be minimised.
Address 112 = 60 seconds
The operator for comparison between the measured
value and the limit value.
Address 113 = 0 (corresponds >=)
2. Linking comparators
The B and C comparators have not been set and are
equal to zero.
The result of comparator A is issued as a comparator
result through the OR link of comparators A, B and C.
Address 107 = 0 (OR link)
Result
The result of the comparator group 1 is latched for at
least 2 minutes if the current in the neutral line is greater
than 100 A for more than 60 seconds.