Display
code
Description
Display
icon
flashing
Alarm
relay
Buzzer Reset Compressor Defrost
Evaporator
fans
Continuous
cycle
Signalled
to LAN
Network
solenoid
valve
error with stepper
driver
HA HACCP type HA OFF OFF mode unchanged unchanged unchanged unchanged YES NO
HF HACCP type HF OFF OFF mode unchanged unchanged unchanged unchanged YES NO
MA
Communication
error with the
Master (only on
Slave)
ON ON automatic unchanged unchanged unchanged unchanged NO NO
u1...u9
Communication
error with the Slave
(only on Master)
ON ON automatic unchanged unchanged unchanged unchanged NO NO
n1...n9
Alarm on unit 1 to
9 in the network
ON ON automatic unchanged unchanged unchanged unchanged NO NO
GPE
Error in the custom
gas parameters
ON ON automatic OFF
not
performed
OFF
not
performed
YES NO
Tab.8.a
8.5 Alarm
parameters
Assign probe for high and low temperature alarms (parameters AA, AA2)
AA selects the probe to be used for measuring the high and low temperature alarms with reference to
thresholds AL and AH. AA2 is the same as AA for thresholds AL2 and AH2.
Code Description Def Min Max UOM User
User
terminal
AA
Assign probe for high (AH) and low (AL) temperature alarms
0: Not configured
1: Air off (Sm)
2: Defrost (Sd)
3: Air on (Sr)
4: Superheated gas (tGS)
5: Reserved
6: Defrost 2 (Sd2)
7: Auxiliary 1 (Saux1)
8: Auxiliary 2 (Saux2)
9: Ambient (SA)
10: Reserved
11: Glass temperature (Svt)
12: Dewpoint (SdP)
13: Virtual probe (Sv)
14: Saturated evaporation temperature (tEu)
1 0 13 - S YES
AA2
Assign probe for high (AH2) and low (AL2) temperature alarms
- see AA
5 1 14 - S NO
Alarm parameters and activation
AL (AH) determines the activation threshold for the low (high) temperature alarm LO (HI). The set value of
AL (AH) is continuously compared against the value measured by the probe defined by parameter AA.
Parameter Ad represents the alarm activation delay in minutes; the low temperature alarm (LO) is
activated only if the temperature remains below the value of AL for a time longer than Ad.
Important:
The thresholds can be relative or or absolute, depending on the value of parameter A1:
l A1 = 0: the value of AL indicates the deviation from the set point and thus the activation point for
the low temperature alarm is: set point - AL. If the set point changes, the activation point also
changes automatically.
l A1 = 1, the value of AL indicates the absolute low temperature alarm threshold. If the set point
changes, the activation point remains the same.
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