ENG
Immediate external alarm (par. DIA)
Activation of the alarm causes:
l
message ‘IA’ shown on the display and ALARM flashing;
l
activation of the buzzer (see par. H8);
l
activation of the alarm relay (see par. DOb);
l
deactivation of the solenoid/compressor output (see par. A10).
Nota:
activation of the external alarm shuts down the evaporator fans only if these follow the status of
the compressor output, as set for parameter F2. When the compressor is shut down due to an external
alarm the compressor ON time is ignored (parameter c3).
Code Description
Def Min Max UOM User
User
terminal
DIA
Assign immediate external alarm digital input
0 = Function disabled
4 = digital input 4 (ID4)
1 = digital input 1 (ID1)
5 = digital input 5 (ID5)
2 = digital input 2 (ID2)
-1 = digital input seriale
3 = digital input 3 (ID3)
0
-1
5
-
S
NO
Delayed external alarm (par. DIb)
The behaviour of this alarm is the same as for the immediate external alarm, with a delay in activation. If
set to 0, the alarm is signal-only.
Code Description
Def Min Max UOM User
User
terminal
DIb
Assign delayed external alarm digital input - see DIA
0
-1
5
-
S
NO
A11
Delay time for delayed external alarm
0 = Signal-only alarm
0
0
14
-
S
NO
Enable defrost (par. DIc)
Used to disable any defrost calls. When the contact is open, all defrost calls are ignored. Par. d5 can be
used to delay activation.
Note:
l
if the contact is open while a defrost is in progress, this is immediately stopped, the defrost icon
flashes on the display indicating the defrost call is active (this starts again when the contact closes);
l
this function may be useful to prevent defrosts on units exposed to the public during store
opening hours.
Code Description
Def Min Max UOM User
User
terminal
DIc
Assign enable defrost digital input - see DIA
0
-1
5
-
S
NO
Start defrost (par. DId)
Closing the digital contact starts a defrost, if enabled. With a Master- Slave network connection, if the
controller is the Master, the defrost will be a network defrost, while if it is a Slave, it will only be a local
defrost. The defrost digital input can be used effectively to perform real time defrosts. Simply connect a
timer to the multifunction digital input on the Master and use d5 to delay the defrosts on the various
Slaves and thus avoid current overloads.
Note:
if the defrost is disabled by another digital input configured as “enable defrost”, the defrost
calls are ignored.
Code Description
Def Min Max UOM User
User
terminal
DId
Assign start defrost digital input - see DIA
0
-1
5
-
S
NO
d5
Defrost delay on power-up or (for Slave) after control from
0
0 240 min
S
NO
42
| 5. Functions
0300086EN rel. 1.0 – 04.09.2018
Содержание MPXone ACS00CB000010
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