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550 746 02 |
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Level alarms on analogue channels
Alarms on analogue channels can be selected as
Limit alarm can be enabled to create an alarm signal, when the AnalogIn values are higher and/or lower than the limits specified. Level1 and Level2 alarm conditions can be combined freely, which makes the system very flexible.
No load / Wire broken. When using the analogue channels in 4–20 mA mode, a current monitor can be enabled to produce an alarm if the current drops below 3 mA.
(See also: ChConfig.EnableFunctions)
Example 1:Alarm used for monitoring “Signal too high” or “Signal too low”:
Example 2:Alarm used for monitoring “Signal high” or “Signal too high”
Related TopicsApplication note for PD 640 (mA) Application note for PD 641 / 643 (Pt100 / Pt 1000) Application note for PD 642 / 643 (mV / thermocouple)
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