2 Functions
180
7UM61 Manual
C53000-G1176-C127-3
The following figure shows the logic diagram for the message that can be generated
by the trip circuit monitor, depending on the control settings and binary inputs.
Figure 2-72
Message Logic for the Trip Circuit Monitor
2.29.2 Setting Notes
General
The function is only in effective and available if address
182
Trip Cir. Sup.
(Sec-
tion 2.2) was configured to either
2 Binary Inputs
or to
1 Binary Input
as
enabled, and the appropriate number of binary inputs have been allocated for this pur-
pose. The function at address
8201
TRIP Cir. SUP.
must be set as
ON
. If allocation
of the required binary inputs does not match the selected monitoring type, then an in-
dication to this effect is generated (
“TripC ProgFail”
). If the trip circuit monitor is
not to be used at all, then at address
182
Disabled
is set. Further parameters are
not needed. The indication of a trip circuit interruption is delayed by a fixed amount of
time. For two binary inputs, the delay is about 2 seconds, and for one binary input, the
delay is about 300 s. This ensures that the longest possible duration of a trip signal
expires, and an indication occurs only if there is a real malfunction in the trip circuit.
Monitoring with
One Binary Input
Note:
When using only one binary input (BI) for the trip circuit monitor, some malfunc-
tions, such as interruption of the trip circuit or loss of battery voltage, can indeed be
detected, but malfunctions with closed trip contacts cannot. Therefore, the measure-
ment must take place over a period of time that bridges the longest possible duration
of a closed trip contact. This is ensured by the fixed number of measurement repeti-
tions and the time between the condition checks.
www
. ElectricalPartManuals
. com
