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3-12 Limit Annunciator3-12 Limit Annunciator
If L_AN (Limit annunciator) is selected for OUT2, the output 2 will act as a
Limit Annunciator. If the limit is or has been reached and the RESET key
(or remote reset contacts)has not been pressed since the limit was
reached, then the limit annunciator output will be energized and the
OP2 indicator will be lit and remain unchanged until the RESET key or
remote reset input is applied.
3-13 Reference Data3-13 Reference Data
There are three reference data contained in setup menu. The
reference data are read only data. The maximum historical PV,
displayed by ,which shows the maximum process value
since the last UNLOCK operation. The minimum historical PV,
displayed by , which shows the minimum process value
since the last UNLOCK operation. The abnormal time, displayed
by ,which shows the total accumulated time (minutes)
during the process has been in abnormal condition since the last
UNLOCK operation.
The values of reference data will be initiated as soon as the RESET
key is pressed for 4 seconds (UNLOCK operation). After UNLOCK
operation, the PV.HI and PV.LO values will start from the current
process value and T.ABN value will start from zero.
UM L91-Rev 8
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