Electrolux Premium - Page 28

Doc. No.: 560001 EG
Page:28 Ed.1" 08-2014
From ser. no.:
ENGLISH
The digital input is used to read a light sensor (actually an analogue input, from which a digital signal is taken using the parameter or
threshold of the light sensor). The light sensor may be located:
• in the door stop,
• inside the cold room or cabinet.
In the  rst case, , the sensor signals the opening and the closing of the door, because, with the door open, light is signalled, and
with the door closed, darkness is signalled (the sensor is located in the door stop and thus will be shadowed when the door is
closed). The inside light will be automatically switched on when the door is open and switched o when the door is closed. The
light stays OFF for a minimum time of 5 seconds, to avoid rapid, successive impulses of the light relay.
To select this operating mode, set AF=0.
In the second case, the light sensor signals the opening of the door of the cold room or the cabinet due to the outside light that
the sensor detects, thus activating the inside light. The closing of the door is measured by time, as the light inside the cold room
or cabinet will illuminate the sensor. After time AF (greater than 0), the inside light is switched o for 5 seconds. If the light sensor
signals darkness, the door must be closed and the light will therefore remain OFF. Otherwise, the door is still considered open and
the light is switched on again. To select this operating mode, set AF>0.
A4 =12 Activation of the AUX output
The digital input is used to activate/deactivate the AUX output, if con gured with parameter H1 or H5, with the following logic:
Digital input AUX output
open deactivation
close activation
Tab. 7.h
The output is activated/deactivated on closing/opening the contact, to make this operating mode
compatible with the presence of the AUX button and the control signal from the supervisor.
Note: if more than one digital input is con gured as AUX, the open status occurs when at least one of the inputs switches to open
status.
A4 =13 Door switch with compressor and fans o and light not managed.
Same as for A4=5, with the di erence that the light output is not modi ed.
Note:
1. the door management algorithm depends on the parameter ‘Ado’.
2. if more than one digital input is con gured as the door switch, the door open status will be considered when at least one of the
inputs is open.
A4 =14 Door switch with fans only o and light not managed.
Same as for A4=9, with the di erence that the light output is not modi 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 =
 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 o
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 = o
12 activation of AUX output open = deactivation
13 door switch with compressor and fans o , light not
managed
open = door open
14 door switch with fans only o , light not managed open = door open
Tab. 7.h
Note:
• if more than one digital input is con 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: Con 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  xed period of 15 minutes.
Special cases:
A6=0 the compressor is always OFF;
A6=100 the compressor is always ON.