User manual

66
ENG
MPXPRO - + 0300055EN rel. 1.3 07/03/13
Hot gas safety procedure for Slave o 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 Def Min Max UoM
A13 Hot gas safety procedure for Slave offl ine
0 = not enabled; 1 = enabled
001-
Tab. 9.g
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 Def Min Max UoM
HS0 to 9 Alarm 0 to 9 (press Set) ----
--- Alarm 0 to 9 - Code ----
h__ Alarm 0 to 9 - Hours 0 0 23 hour
n__ Alarm 0 to 9 – Minutes 0 0 59 min
--- Alarm 0 to 9 - Duration 0 0 999 min
Tab. 9.h
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 Def Min Max UoM
Ht0 HACCP alarms present 0 0 1 -
HAn Number of type HA alarms 0 0 15 -
HA to
HA2
Type HA HACCP alarms activated (press
Set)
--- -
y__ Alarm 1 to 3 - Year 0 0 99 year
M__ Alarm 1 to 3 - Month 0 1 12 month
d__ Alarm 1 to 3 – Day of the month 0 1 31 day
h__ Alarm 1 to 3 – Hour 0 0 23 hour
n__ Alarm 1 to 3 – Minutes 0 0 59 minute
--- Alarm 1 to 3 – Duration 0 0 240 minute
Htd HACCP alarm delay
0 = monitoring disabled
0 0 240
Tab. 9.i
t
Ad Htd
t
ON
OFF
ALARM
AH
St
S
Fig. 9.c
Key
S Measurement probe Ad
Delay time for high and low
temperature alarms
St Set point Htd
HACCP alarm delay
0 = monitoring disabled
AH
High temperature alarm
threshold
t Time
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 Def Min Max UoM
HFn Number of type HF alarms 0 0 15 -
HF to HF2 Type HF HACCP alarms activated
(press Set)
--- -
y__ Alarm 1 to 3 - Year 0 0 99 year
M__ Alarm 1 to 3 - Month 0 1 12 month
d__ Alarm 1 to 3 – Day of the month 0 1 31 day
h__ Alarm 1 to 3 – Hours 0 0 23 hour
n__ Alarm 1 to 3 – Minutes 0 0 59 minute
--- Alarm 1 to 3 – Duration 0 0 240 minute
Tab. 9.j
t
black out
t
ON
OFF
ALARM
AH
St
S
Fig. 9.d
Key
S Measurement probe ALARM Type HF HACCP alarm
St Set point t Time
AH
High temperature alarm
threshold