33
set
point (St)
Registrazione massima temperatura
AH
Htd+Ad
Allarme HA
Durata allarme
Temperatura
Tempo
set
point (St)
AH
Black out
Allarme HF
Tempo
Temperatura
Fig. 6.m
Fig. 6.n
ENGLISH
ir33 +030220441 - rel. 2.0 - 01.05.2006
6.16 HACCP (Hazard Analysis and Critical Control Point)
This function can only be activated on the controllers with the RTC option fi tted, and allows advanced
control of the operating temperature and the recording of any anomalies due to power failures or
increases in the operating temperature due to various causes (breakages, severe operating conditions,
operator errors, etc…).
There are two types of HACCP alarm, signalled on the display with the following codes respectively: HA
and HF. “HA” - if, during operation, the temperature measured is higher than the threshold set for the
parameter “AH” (high temperature alarm threshold) for a time Th higher than the sum of the parameter
“Ad” (HACCP alarm delay) and the parameter “Htd” (temperature alarm detection delay), the HA alarm
is generated.
“HF” – this occurs after a power failure for an extended time (>1 minute) if, when power returns, the
temperature is higher than the threshold set for the parameter “AH” (the absolute value of AH,
if “A1”= 0; the relative value equal to “AH” + “St”, if “A1”= 1.
The following data are saved when the HA or HF event occurs:
• hour, minutes and day of the week,
• type of alarm,
• maximum temperature reached after the activation of the alarm,
• duration of the power failure.
The activation of one or both of the alarms causes the HACCP LED to fl ash and the display of the alarm code,
as well as the recording of the alarm to the E2PROM and the activation of the alarm relay or buzzer
(if present).
Pressing SET and down for more than 5 seconds resets the fl ashing of the HACCP LED, the HA and/or HF
signal and reinitialises the monitoring of HA.
Pressing the button mutes the buzzer and resets the alarm relay (if present).
The date and time of the last 3 HA and HF alarms can be displayed with 6 parameters: HA, HA1, HA2 and HF,
HF1, HF2. The activation of a new HA or HF alarm shifts the list of the last 3 alarms, deleting the oldest event.
The new alarm can be displayed using the parameter that identifi es the most recent alarm, that is, HA or HF.
The counter of the alarm events, HAn or HFn, is increased up to a maximum value of The activation of one or
both of the alarms causes the HACCP LED to fl ash and the display of the alarm code, as well as the recording
of the alarm to the E2PROM and the activation of the alarm relay or buzzer (if present).
Pressing SET and down for more than 5 seconds resets the fl ashing of the HACCP LED, the HA and/or HF
signal and reinitialises the monitoring of HA.
Pressing the button mutes the buzzer and resets the alarm relay (if present).
The date and time of the last 3 HA and HF alarms can be displayed with 6 parameters: HA, HA1, HA2 and HF,
HF1, HF2. The activation of a new HA or HF alarm shifts the list of the last 3 alarms, deleting the oldest event.
The new alarm can be displayed using the parameter that identifi es the most recent alarm, that is, HA or HF.
The counter of the alarm events, HAn or HFn, is increased up to a maximum value of 15.
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