janitza RCM 202-AB, Руководство пользователя и технические данные

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RCM 202-AB
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16 RCM 202-AB
If the current path remains below the hysteresis after the reset delay time has
elapsed, the messages and the digital output are reset.
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.)
Delay time t
v
> 0 s
Reset delay time t
vr
> t
v
Fig. 6: Effects of the delay times on messages
6.3 Extreme value storage
The RCM 202-AB stores the minimum and maximum values of residual current meas-
urement for each current channel with a time stamp.
The stored extreme values can be displayed by channel on the display and reset or
read out via Modbus.
6.4 Measured value memory/historical data
The RCM 202-AB files cyclical data sets of measured values in the internal memory.
This enables a later evaluation/report generation. The device-internal memory serves
as a buffer for the measured value database of the evaluation software, which con-
nects to the RCM 202-AB according to schedule (e.g. monthly) in order to read out
the data sets. During a connection, the data collected is read and sorted in the data-
base so that a complete history exists.