Siemens 6MD85 - Application and Setting Notes; Settings

[fofr1b01-090330-01.tif, 1, en_US]
The following applies for the power consumption of the equivalent resistance R:
[fofr1b04-090330-01.tif, 1, en_US]
Application and Setting Notes
Parameter: Alarm delay
•
Recommended setting value (_:100) Alarm delay = 2 s (Trip-circuit supervision with 2 binary
inputs)
•
Recommended setting value (_:100) Alarm delay = 300 s (Trip-circuit supervision with 1 binary
input)
With the parameter Alarm delay, you can set the time for the delayed output of the indication
Trip-
circuit failure
.
For Trip-circuit supervision with 2 binary inputs, you set the Alarm delay parameter so that the short-
term transient states do not cause the function to activate.
For the Trip-circuit supervision with 1 binary input, you set the Alarm delay so that the longest duration
of a trip command is bridged without fail. This ensures that the indication is emitted only if the trip circuit is
actually interrupted.
Parameter: Blk.by trip/open cmd from
•
Possible settings, application-dependent
The parameter works only with the trip-circuit supervision with 1 binary input.
Use the parameter Blk.by trip/open cmd from to set the conditions under which the trip-circuit super-
vision is blocked. The following conditions can cause a blocking of the trip-circuit supervision function:
•
The
Trip/open cmd. of the circuit breaker is activated.
•
One of the trip commands of the circuit-breaker failure protection is activated.
•
One of the trip commands of the circuit-breaker reignition protection is activated.
The circuit-breaker failure protection is set to protect a different trip circuit than the local circuit breaker. Using
the configuration options of the Blk.by trip/open cmd from parameter, multiple trip-circuit supervision
functions can be operated in parallel. For instance, a trip-circuit supervision function dedicated to a local
circuit breaker can also be operated parallel to a higher-level circuit breaker upon which the circuit-breaker
failure protection acts.
Settings
Addr.
Parameter C Setting Options Default Setting
74TC sup.1BI #
_:1 74TC sup.1BI #:Mode
•
off
•
on
•
test
on
_:100 74TC sup.1BI #:Alarm delay 1.00 s to 600.00 s 300.00 s
_:102 74TC sup.1BI #:Blk.by trip/
open cmd from
Setting options depend on
configuration
8.3.11.5
8.3.11.6
Supervision Functions
8.3 Supervision of the Secondary System
SIPROTEC 5, High-Voltage Bay Controller, Manual 973
C53000-G5040-C015-9, Edition 11.2017