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ENG
ir33 universale +030220801 - rel. 1.0 - 16.04.2008
8. ALARMS
8.1 Types of alarms
There are two types of alarms available:
high temperature (E04) and low temperature (E05);
•
serious alarms, that is, all the others.•
The data memory alarms E07/E08 always cause the control to shutdown.
“Alarm” mode (c0=5) can use one or more outputs to signal a low or
high temperature, probe disconnected or short-circuited alarm: see the
chapter on “Functions”. The e ect of the outputs on the alarms in special
operation depends on the “dependence” parameter: see the chapter on
“Functions”.
The controller also indicates alarms due to faults on the controller itself,
on the probes or in the “Auto-Tuning” procedure. An alarm can also be
activated via an external contact. The display shows “Exy” alternating with
the standard display. At the same time, an icon ashes (spanner, triangle
or clock) and the buzzer may be activated (see the table below). If more
than one error occurs, these are shown in sequence on the display.
A maximum of 4 alarms are saved, in a FIFO list (AL0,AL1,AL2,AL3). The last
alarm saved can be read from parameter AL0 (see the list of parameters).
To mute the buzzer press Prg/mute.
8.2 Alarms with manual reset
To cancel the signal of an alarm with manual reset, once the causes •
have ceased, press Prg/mute and UP for 5 seconds.
8.3 Display alarm queue
Access the list of Parameters, as described in paragraph 3.3.3.•
Press • / until reaching parameter “AL0” (last error saved).
Press • Set, this accesses a submenu where the and buttons
can be used to scroll between the year, month, day, hours, minutes and
type of alarm activated. If the controller is not tted with the RTC, only
the type is saved.
From any of the parameters, pressing • Set returns to the parent
parameter “ALx”.
Example:
‘y07’ -> ‘M06’ -> ‘d13’ -> ‘h17’ -> ‘m29’ -> ‘E03’
indicates that alarm ‘E03’(alarm from digital input) occurred on 13 June
2007 at 17:29.
Example: display after error E03
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