janitza RCM 202-AB, Руководство пользователя и технические данные

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RCM 202-AB 15
Example: Exceedance of warning and alarm thresholds with signal paths
Parameterization: The digital output reacts to alarm thresholds
(When the warning and alarm thresholds are exceeded, the
messages can be called up via Modbus after the delay time
has elapsed.)
Fig. 5: Evaluation of the set hysteresis for messages
6.2.3 Delay times
The following delay times can be set for residual current monitoring per channel:

Delay time for warning and alarm messages (t
v
)

Reset delay time for warning and alarm messages (t
vr
)
Delay time for warning and alarm messages
Temporary threshold violations are not reported with parameterization of a delay time
for warning and alarm messages.
Messages are not taken into consideration during the parameterized delay time (t
v
).
They are only displayed and updated in Modbus if the current path still lies above the
warning or alarm threshold after the delay time has elapsed. Only then will the digital
output be set, if configured.
Reset delay time for warning and alarm messages
If there are no more messages, the RCM 202-AB resets the warning and alarm mes-
sages. The reset delay time (t
vr
) for the warning and alarm messages can be param-
eterized and is needed to ignore brief fluctuations. When resetting a message, also
the digital output is reset.
If the current path goes down and falls below the hysteresis or the upper warning
threshold, the reset delay time (t
vr
) is activated.
During this time, the respective message remains active and the digital output is set.