Limiter function
The relay of the output 1 operates in
The OUT 1 turns OFF when:
-The instrument is configured as a high limiter
(C1 = Hi) and the measured value is greater than limiter threshold [“Su” parameter (see Operative parameters”)] or
-The instrument is configured as a low limiter (C1 = LO) and the measured value is less than limiter threshold [“Su” parameter (see Operative parameters”)] or
-The instrument is configured as a high/low
limiter (C1 = HiLO) and the measured value is greater than “Su” parameter (see Operative parameters”) or less than “S1” parameter (see Operative parameters”).
The Out 1 remains OFF until the condition which generated the shutdown, no longer exists and the acknowledge action has been performed.
The upper display flashes during a shutdown and returns to a steady display when the shutdown condition no longer exists.
When the OUT 1 is OFF the RESET LED is ON [if the selected rearming mode is equal to 0 (C2 = 0)] or flashes [if the selected rearming mode is equal to 1 (C2 = 1)]. When the selected rearming mode is equal to 1
(C2 = 1) the RESET LED is steady ON when OUT 1 is OFF and acknowledged.
The shutdown condition can be stored in permanent memory (see C4).
Acknowledgment can be performed by pressing the RESET key, by momentarily closing the external dry contact or by a command from the serial link.
The length of the shutdown condition and max/min measured values are stored in memory and available for viewing (see “Normal Display Mode”) until the next shutdown condition occurs.
These informations are lost at power down.
During a shutdown condition the max/min measured values are continuously updated and can be monitored.
Example 1 - C1 = Hi and C2 = O
Example 2 - C1 = Hi and C2 = 1
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18 | 19/04/2004, 15.07 |
