17
open alarm is signaled.;
n =
compressor and fans stay according to the odc parameter when
door open alarm is signaled.
-
d2F
(EAL, bAL,)
Second digital input configuration (26-27): EAL
: external alarm;
bAL
:
serious alarm, regulation is stopped.;
-
d2P: Configurable digital input polarity (26-27):
(OP÷CL)select if the digital input is activated
by opening or closing the contact.
OP
= opening;
CL
=closing
-
did Time delay for digital input alarm:
(0÷255 min.) If d2F=EAL or bAL (external alarms), “did”
parameter defines the time delay between the detection and the successive signaling of the
alarm.
Auxiliary relay configuration
-
oA1 First auxiliary relay configuration (7-8):
ALL:
alarm;
Lig:
light;
AuS:
Second thermostat;
tMr:
auxiliary relay enabled by buttonboard
C2:
Second compressor: it always is switched on during the Cycles, during the holding depends on
the 2CH parameter.
-
oA2 First auxiliary relay configuration (1-2):
ALL:
alarm;
Lig:
light;
AuS:
Second thermostat;
tMr:
auxiliary relay enabled by buttonboard
C2:
Second compressor: it always is switched on during the Cycles, during the holding depends on
the 2CH parameter.
-
oA3 First auxiliary relay configuration (9-10)
ALL:
alarm;
Lig:
light;
AuS:
Second thermostat;
tMr:
auxiliary relay enabled by buttonboard
C2:
Second compressor: it always is switched on during the Cycles, during the holding depends on
the2CH parameter.
Second relay management
2CH Compressors setting during the holding phase: (used only if one OAi =C2)
The second compressor is always switched on during the phases, during the holding depends on
this parameter.
The 2CH sets which compressor is used during the holding phase.
Second compressor operates on set + OAS. (whit set= set loaded during the holding phase of each
cycle). It starts oAt min. after the first compressor
The following table shows how it works:
Holding
2CH =C1
C1 on;
2CH =C2
C2 on
2CH =1C2
C1 on; C2 On
-
OAt Second compressor switching on delay
: (0÷255 min) time delay between the switching
on of the first and second compressor.
-
OAS Set point for second compressor
(-50÷50; ris.1 °C/ 1°F) This set point is a differential
add to the set point of the first compressor.
ES. OAS=0
the set point of the second compressor s the same set point of the first compressor.
OAS=5
the set point of the second compressor is SET (of first compressor) + 5;
OAS=-5
the set point of the second compressor is SET (of first compressor) - 5;
-
OAH Differential for second compressor:
(-12.0÷12,0; ris.0,1°C/1°F, always ¹0) second
compressor cut IN is SETH+OAS+OAH. Second compressor cut out is when the temperature
SETH+OAS.
-
OAi Probe selection for the second compressor: rP
=Thermostat probe;
EP
= Evaporator
probe;
tiM:
cycle count down;
i1P
= insert probe 1;
i2P
= insert probe 2;
i3P
= insert probe 3.
