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ENGLISH
ir33 +030220441 - rel. 2.0 - 01.05.2006
A4 =13 Door switch with compressor and fans off and light not managed.
Same as for A4=5, with the difference that the light output is not modifi ed.
Note:
1. the door management algorithm depends on the parameter ‘Ado’.
2. if more than one digital input is confi gured as the door switch, the door open status will be conside-
red when at least one of the inputs is open.
A4 =14 Door switch with fans only off and light not managed.
Same as for A4=9, with the difference that the light output is not modifi ed.
Note: for A4/5= 13 or 14: the Ado door management algorithm is used in both cases.
Default: A4=0 => Digital input not active (for all other models).
The table below summarises the functions of the digital input corresponding to the value assigned to the
variable A4.
Value of A4 Function Function active LED on
0 input not active
1 immediate external alarm open = alarm open
2 delayed external alarm open = alarm open
3 for model M, select probes open = probe selected by parameter /tI closed = fi rst
probe enabled
3 other models, enable defrost closed= enabled
4 start defrost closing = defrost request
5 door switch with compressor and fans OFF open = door open
6 remote ON/OFF open = instrument off
7 curtain switch closed = curtain closed
8 low pressure switch open = low pressure
9 door switch with fans OFF only open = door open
10 direct / reverse open = direct
11 light sensor above the threshold = off
12 activation of AUX output open = deactivation
13 door switch with compressor and fans off, light not managed open = door open
14 door switch with fans only off, light not managed open = door open
Tab. 7.h
Note:
• if more than one digital input is confi gured in the same way, the activation of the associated function
will be enabled if at least one of these is open.
• for control with two compressor steps (with or without rotation, H1=12 or 13) the function associated
with the digital inputs is activated on both.
A5: Confi guration of the second multifunction digital input.
For this parameter the same description relating to parameter A4 is valid, obviously referring to the
second digital input. Default: A5=0 => Digital input not active.
A6: Stop compressor from external alarm (multifunction input)
The meaning of this parameter is similar to that of parameter c4 (duty setting).
If an external alarm occurs (immediate or delayed), the compressor works for a time equal to the value
set for parameter A6 (in minutes), while it remains OFF for a fi xed period of 15 minutes.
Special cases:
A6=0 the compressor is always OFF;
A6=100 the compressor is always ON.
The fans continue to be managed according to the set parameters (see category F). If duty setting for the
probe alarm (parameter c4) is also active, the controller uses the value of A6.
Note: if control with two compressor steps is selected (with or without rotation, H1, H5 = 12 or 13), the
stop compressor acts on both steps.
Default: A6=0 => compressor OFF in the event of external alarms.
A7: Delay in detecting the external alarm (multifunction input)
Establishes the delay (in minutes) in detecting an external alarm, if selected as a delayed external alarm
(A4, A5=2) or the signal of the low pressure (LP) alarm).
Note: if A7= 0, in the event of delayed alarms from digital input (A4 or A5 or A9= 2), the controller does
not act on the control outputs.
A8: Enable signals Ed1 and Ed2
The alarms Ed1 and Ed2 signal the end of the defrost due to maximum duration of the defrost time
dP1/dP2 and can be disabled by setting A8=0. The warnings Ed1 and Ed2, if enabled, are cancelled at
the start of the following defrost or can be reset manually by pressing the * and AUX buttons for more
than 5 seconds. Default: A8=0 => warnings Ed1 and Ed2 disabled.
A9: Confi guration of the third multifunction digital input (ir33DIN models H only)
For this parameter the same description relating to parameter A4 is valid, obviously referring to the thirs
digital input. Default: A9=0 => Digital input not active.
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