Haccp Alarm Parameters And Activating Monitoring - Carel MPXPRO User Manual

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Hot gas safety procedure for Slave offl ine (parameter
A13)
In a Master/Slave network the multiplexed hot gas defrost is always
synchronized by the Master. The safety procedure switches the Slave OFF
if it is offl ine (no longer by the Master across the tLAN).
Par. Description
A13 Hot gas safety procedure for Slave offl ine
0 = not enabled; 1 = enabled
Alarm log (parameters HS0 to HS9)
The alarm log can be displayed by accessing parameters HS0 to HS9,
rather than using the procedure described in paragraph 9.3.
Par. Description
HS0 to 9 Alarm 0 to 9 (press Set)
--- Alarm 0 to 9 - Code
h__ Alarm 0 to 9 - Hours
n__ Alarm 0 to 9 – Minutes
--- Alarm 0 to 9 - Duration
9.6 HACCP alarm parameters and activating
monitoring
Type HA alarms
The alarm queue can be displayed by accessing parameters HA to HA2,
rather than using the procedure described in paragraph 9.4. The type
HA alarm is generated if during normal operation the temperature
read by the probe set for parameter AA exceeds the high temperature
threshold for the time Ad+Htd. Consequently, compared to the normal
high temperature alarm already signalled by the controller, the type HA
HACCP alarm is delayed by a further time Htd specifi cally for HACCP
recording. The order of alarms listed is progressive, HA is the most recent
alarm. A maximum of 3 errors are saved, in a FIFO list (HA to HA2). HAn
indicates the number of type HA alarms activated.
Par. Description
Ht0 HACCP alarms present
HAn Number of type HA alarms
HA to Type HA HACCP alarms activated (press
HA2 Set)
y__ Alarm 1 to 3 - Year
M__ Alarm 1 to 3 - Month
d__ Alarm 1 to 3 – Day of the month
h__ Alarm 1 to 3 – Hour
n__ Alarm 1 to 3 – Minutes
--- Alarm 1 to 3 – Duration
Htd HACCP alarm delay
0 = monitoring disabled
AH
S
St
ON
ALARM
OFF
MPXPRO - + 0300055EN rel. 1.0 30/08/10
Def Min Max
0 0 1
Tab. 9.g
Def Min Max
- - -
- - -
0 0 23
0 0 59
0 0 999
Tab. 9.h
Def Min Max UoM
0 0 1
0 0 15
- - -
0 0 99
0 1 12 month
0 1 31
0 0 23 hour
0 0 59 minute
0 0 240 minute
0 0 240
Tab. 9.i
t
t
Ad Htd
Fig. 9.c
Key
S Measurement probe
St Set point
High temperature alarm
AH
threshold
UoM
ALARM Type HA HACCP alarm
-
Type HF alarms
The type HF HACCP alarm is generated following a power failure for an
extended time (> 1 minute), if when power returns the temperature
read by probe set for parameter AA exceeds the AH high temperature
threshold. HFn indicates the number of type HF alarms activated.
Par. Description
UoM
HFn Number of type HF alarms
-
HF to HF2 Type HF HACCP alarms activated
-
(press Set)
hour
min y__ Alarm 1 to 3 - Year
M__ Alarm 1 to 3 - Month
min
d__ Alarm 1 to 3 – Day of the month
h__ Alarm 1 to 3 – Hours
n__ Alarm 1 to 3 – Minutes
--- Alarm 1 to 3 – Duration
S
ALARM
Key
S Measurement probe
St Set point
High temperature alarm
AH
threshold
-
-
-
year
day
66
Delay time for high and low
Ad
temperature alarms
HACCP alarm delay
Htd
0 = monitoring disabled
t Time
Def Min
0
-
0
0
0
0
0
0
AH
St
ON
OFF
black out
Fig. 9.d
ALARM Type HF HACCP alarm
t Time
Max UoM
0 15 -
- - -
0 99 year
1 12 month
1 31 day
0 23 hour
0 59 minute
0 240 minute
Tab. 9.j
t
t