TCW242-S_R1.0 – July 2021
Page 17
The “Limit” indicates the border of the working range for the observed channel.
A trigger condition occurs when the value goes higher (“Sign” is “≥”) and lower (“Sign” is “<”)
than the limit. In both cases, the monitored parameter goes out of range.
Coming back in range for the observed channel is considered when the value goes higher than
Limit + Hysteresis (“Sign” is “<”) or lower than Limit – Hysteresis (“Sign” is “≥”).
The hysteresis is used to prevent excessive triggering when the value vacillates around the
trigger point.
It is strongly recommended not to use Hysteresis=0.0.
For every alarm “Return notification” option is available. If this option is chosen there will be a
notification also when the parameter returns in range.
For every alarm, there is a “Notification delay” parameter. It is very useful as a filter for short
alarm conditions.
Summary of Contents for TCW242-S
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