Trip-Circuit Supervision With 1 Binary Input - Siemens 7SJ82 Manual

No Command
. Relay
(CR)
4 Closed
With the Alarm delay parameter, you can set the time delay. After fixing the fault in the trip circuit, the
failure indication will automatically expire after the same time.
If the binary input signals
of the device, then the
function is not in effect.
The following figure shows the logic diagram of the trip-circuit supervision with 2 binary inputs.
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Figure 9-34
9.3.13.4

Trip-Circuit Supervision with 1 Binary Input

When using 1 binary input, you will not identify any disruptions on the circuit breaker. The binary input is
connected in parallel with the respective command relay of the protection device. The circuit-breaker auxiliary
contact is bridged with a high-resistance equivalent resistance R.
The following figure shows the principle of the trip-circuit supervision with 1 binary input.
SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017
CB AuxCon1
OFF Open
>Trip relay or >CB auxiliary contact are not routed on the binary inputs
Input sig. not routed indication is generated and the Trip-circuit supervision
Logic Diagram of Trip-Circuit Supervision with 2 Binary Inputs
AuxCon2 BI 1 BI 2
Closed L H
Supervision Functions
9.3 Supervision of the Secondary System
Dynamic State Static State
CR successfully activated the circuit
breaker
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