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.
ENG
0300086EN rel. 1.0 – 04.09.2018
8. Alarms and signals |
101
Содержание MPXone ACS00CB000010
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