Alarm functions
(Skipped if option is not available or P1 = none) The alarm can be programmed as:
-process alarm
-band alarm
-deviation alarm.
Band and deviation alarms are referred to the limiter threshold and are possible only if an high limiter or a low limiter function has been selected. For all the alarm types, it is possible to select automatic or manual reset or the “Silence” function.
The "Silence" function is a typical function of the alarm annunciators (see ISA “Alarm annunciator operational sequence”) and it is usually applied to audible alarm indications (horn). This function allows the manual reset of the alarm even if the alarm condition is still in progress.
It is also possible to assign to the alarm a stand by (mask) function.
If the alarm is programmed as band or deviation alarm, this function masks the alarm condition after a safety threshold change or at the instrument
Graphic example of the alarm behaviour are shown at pages 12 and 13.
Serial LInk (optional)
The device can be connected to a host computer via serial link.
The host can put the device in LOCAL (parameters are controlled via keyboard) or in REMOTE (functions and parameters are controlled via serial link).
REMOTE is shown by the decimal point to the left of "REM" which is on the right side of the numerical display.
Via serial link it is possible to read and/or to modify all the operative and configuration parameters.
The following conditions must apply to implement this function:
1)Configure parameters L1 through L4 with the front keyboard.
2)The device must be in the Operating mode.
For other details require ENG
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