janitza RCM 202-AB, Руководство пользователя и технические данные

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14
RCM 202-AB
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14 RCM 202-AB
6.2.1 Warning and alarm thresholds
Warning and alarm thresholds are parameterizable thresholds, which can be adapted
to the currents to be monitored. They can be adjusted separately for each channel.
When reaching these thresholds, warning or alarm messages are sent. The status
LED lights up yellow and channel-related text messages are shown on the display.
Example:
Exceedance of warning and alarm thresholds
Parameterization: The digital output reacts to warning and 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
Fig. 4:
Response and warning thresholds and the resulting messages
6.2.2 Hysteresis
Alarm thresholds have a parameterizable hysteresis. They are defined separately for
each channel.
If the residual current, for example, exceeds the upper alarm threshold and then goes
back down, the alarm message is reset after the hysteresis is fallen below and the
parameterized reset delay time, if applicable, has passed.