dIXEL
Installing and Operating Instructions
1592018110
1592018110 XR460C GB r1.0 04.07.2005
XR460C
3/5
Con2 Compressor2 ON time with faulty probe2: (0÷255 min) time during which the compressor2
is active in case of faulty thermostat probe. With COn=0 compressor2 is always OFF.
COF2 Compressor2 OFF time with faulty probe2: (0÷255 min) time during which the compressor
is off in case of faulty thermostat probe. With COF=0 compressor2 is always active.
CH2 Kind of action for section 2: CL = cooling; Ht = heating
DISPLAY
CF Temperature measurement unit: °C = Celsius; °F = Fahrenheit. When the measurement unit
is changed the SET point and the values of some parameters have to be modified.
rES Resolution (for °C): (in = 1°C; de = 0,1°C) allows decimal point display. dE = 0,1°C; in = 1 °C
Lod1 Bottom display visualization: select which probe is displayed by the instrument in the bottom
display: P1 = Thermostat1 probe; P2 = Evaporator probe; P2 = Thermostat2 probe
Lod2 Upper display visualization: select which probe is displayed by the instrument in the upper
display: P1 = Thermostat1 probe; P2 = Evaporator probe; P2 = Thermostat2 probe
DEFROST
dFS relation between defrosts.4 relation between the 2 sections of the controller are available, to
manage different kinds of applications:
in = independent defrosts;
StS = same defrost start, synchronised defrost end;
St = same defrost start, independent defrost end;
SE = sequential defrost;
tdF1 Defrost type, section 1: rE = electrical heater (Compressor OFF);
in = hot gas (Compressor and defrost relays ON)
EdF1 Defrost mode, section 1:
in = interval mode. The defrost starts when the time “IdF1” is expired.
Sd = Smartdefrost mode. The time IdF (interval between defrosts) is increased only when the
compressor is running (even non consecutively).
SdF1 Set point for SMARTDEFROST, section 1: (-30
÷
30 °C/ -22
÷
86 °F) evaporator temperature
which allows the IdF counting (interval between defrosts) in SMARTDEFROST mode.
dtE1 Defrost termination temperature, section 1: (-50,0÷110,0°C; -58÷230°F) (Enabled only
when the evaporator probe is present) sets the temperature measured by the evaporator probe
which causes the end of defrost.
IdF1 Interval between defrosts, section 1: (1÷120h) Determines the time interval between the
beginning of two defrost cycles.
MdF1 (Maximum) duration of defrost, section 1: (0÷255 min) When P2P = no, no evaporator
probe, it sets the defrost duration, when P2P = yES, defrost end based on temperature, it sets
the maximum length for defrost.
tPF1 Pre-defrost time: (0÷30min) The compressor is activated for this time before a hot gas
defrost.
Fdt1 Drain down time, section 1: (0÷60 min.) time interval between reaching defrost termination
temperature and the restoring of the control’s normal operation. This time allows the evaporator
to eliminate water drops that might have formed due to defrost.
dPo1 First defrost after start-up, section 1: y = Immediately; n = after the IdF time
EdF2 Defrost mode, section 2:
in = interval mode. The defrost starts when the time “IdF2” is expired.
Sd = Smartdefrost mode. The time IdF (interval between defrosts) is increased only when the
compressor is running (even non consecutively).
IdF2 Interval between defrosts, section 2: (1÷120h) Determines the time interval between the
beginning of two defrost cycles.
MdF2 (Maximum) duration of defrost, section 2: (0÷255 min) it sets the defrost duration.
dFd Display during defrost: rt = real temperature; it = temperature reading at the defrost start;
Set = set point; dEF = “dEF” label; dEG = “dEG” label;
dAd Defrost display time out: (0
÷
255 min) Sets the maximum time between the end of defrost
and the restarting of the real room temperature display.
dSd Start defrost delay : ( 0÷99min) This is useful when different defrost start times are necessary
to avoid overloading the plant.
FANS
FnC1 Fan operating mode, section 1:
C-n = running with the compressor1, OFF during the defrost;
C-y = running with the compressor1, ON during the defrost;
O-n = continuous mode, OFF during the defrost;
O-y = continuous mode, ON during the defrost;
Fnd1 Fan delay after defrost, section 1: (0÷255 min) The time interval between the defrost end
and evaporator fans start.
FSt1 Fan stop temperature, section 1: (-50÷110°C; -58÷230°F) setting of temperature, detected
by evaporator probe, above which the fan is always OFF.
FAP1 Probe selection for fans management, section 1: nP = no probe: fan follows the setting of
FnC1 parameter; P1 = thermostat 1 probe; P2 = thermostat 2 probe; P3 = evaporator probe;
ALARMS
ALc1 Temperature alarms configuration, section 1: it determines if alarms are relative to set
point 1 or referred to absolute values: rE relative to set point; Ab absolute temperature
ALL1 Minimum alarm, section 1:
with ALc1=rE: relative to set point1, (0÷50°C) this value is subtracted from the set point1.
The alarm signal is enabled when the probe values goes below the “SET1-ALL” value.
with
ALc1=Ab absolute value, minimum alarm is enabled when the probe values goes below
the “ALL1” value.
ALU1 Maximum alarm, section 1:
with
ALc1=rE: alarm relative to set point1, (0÷50°C) Maximum alarm is enabled when the
probe values exceeds the “SET1+ALU” value.
with ALc1=Ab: absolute alarm, (Set1÷Full Sc.) Maximum alarm is enabled when the probe
values exceeds the “ALU” value.
ALd1 Temperature alarm delay, section 1: (0÷255 min) time interval between the detection of an
alarm condition and the corresponding alarm signalling.
dAo1 Delay of temperature alarm at start-up, section 1: (0min÷23h 50min) time interval between
the detection of the temperature alarm condition in section after the instrument power on and
the alarm signalling.
ALc2 Temperature alarms configuration, section 2: it determines if alarms are relative to set
point 2 or referred to absolute values: rE relative to set point; Ab absolute temperature
ALL2 Minimum alarm, section 2:
with ALc2=rE: relative to set point1, (0÷50°C) this value is subtracted from the set point2.
The alarm signal is enabled when the probe values goes below the “SET2-ALL” value.
with
ALc2=Ab absolute value, minimum alarm is enabled when the probe values goes below
the “ALL2” value.
ALU2 Maximum alarm, section 2:
with
ALc2=rE: alarm relative to set point1, (0÷50°C) Maximum alarm is enabled when the
probe values exceeds the “SET2+ALU” value.
with ALc2=Ab: absolute alarm, (Set2÷Full Sc.) Maximum alarm is enabled when the probe
values exceeds the “ALU” value.
ALd2 Temperature alarm delay, section 2: (0÷255 min) time interval between the detection of an
alarm condition and the corresponding alarm signalling.
dAo2 Delay of temperature alarm at start-up, section 2: (0min÷23h 50min) time interval between
the detection of the temperature alarm condition in section after the instrument power on and
the alarm signalling.
AFH Temperature alarm and fan differential: (0,1÷25,5°C; 1÷45°F) Intervention differential for
temperature alarm set point and fan regulation set point, always positive.
EdA Alarm delay at the end of defrost: (0
÷
255 min) Time interval between the detection of the
temperature alarm condition at the end of defrost and the alarm signalling.
dot Delay of temperature alarm after closing the door : (0
÷
255 min) Time delay to signal the
temperature alarm condition after closing the door.
doA Open door alarm delay:(0÷255 min) delay between the detection of the open door condition
and its alarm signalling: the flashing message “dA” is displayed.
PROBE INPUTS
Pbc Kind of probe: Ptc = PTC; ntc = NTC
oFS1 Thermostat1 probe calibration: (-12.0
÷
12.0°C/ -21
÷
21°F) allows to adjust possible offset of
the thermostat1 probe.
oFS2 Thermostat2 probe calibration: (-12.0
÷
12.0°C/ -21
÷
21°F) allows to adjust possible offset of
the thermostat2 probe.
oFS3 Evaporator probe calibration: (-12.0
÷
12.0°C/ -21
÷
21°F) allows to adjust possible offsets of
the evaporator probe.
P2P Thermostat2 probe presence : no= not present; yES= present.
P3P Evaporator probe presence: : no= not present: the defrost stops only by time; yES= present:
the defrost stops by temperature and time.
DIGITAL INPUTS
i1P Digital input 1 polarity (14-15):
CL : the digital input is activated by closing the contact;
OP : the digital input is activated by opening the contact.
i1F Digital input 1 operating mode(14-15): configure the digital input function:
MP1 = door switch 1; MP2 = door switch 2, MP: door switch (it’s used by both the sections);
EA1 = generic alarm section 1; EA2 = generic alarm section 2; EAL = generic alarm (it’s used
by both the sections); bA1 = serious alarm mode section 1; bA2 = serious alarm mode section
2; , bAL = serious alarm mode section (it’s used by both the sections); dF1 = Start defrost,
section 1; dF2 = Start defrost, section 2; dEF = Start defrost (it’s used by both the sections);
oF1 = remote on/ off, section1; oF2 = remote on/ off, section 2; oFF = = remote on/ off (it’s
used by both the sections); ES = Energy Saving
i2P Digital input 2 polarity(13-14):
CL : the digital input is activated by closing the contact;
OP : the digital input is activated by opening the contact.
i2F Digital input 2 operating mode(13-14): configure the digital input function:
MP1 = door switch 1; MP2 = door switch 2, MP: door switch (it’s used by both the sections);
EA1 = generic alarm section 1; EA2 = generic alarm section 2; EAL = generic alarm (it’s used
by both the sections); bA1 = serious alarm mode section 1; bA2 = serious alarm mode section
2; , bAL = serious alarm mode section (it’s used by both the sections); dF1 = Start defrost,
section 1; dF2 = Start defrost, section 2; dEF = Start defrost (it’s used by both the sections);
oF1 = remote on/ off, section1; oF2 = remote on/ off, section 2; oFF = = remote on/ off (it’s
used by both the sections); ES = Energy Saving
odc1 Compressor and fan status when open door, section 1:
no = normal; Fan = Fan OFF; CPr = Compressor OFF; F_C = Compressor and fan OFF.
rrd1 Outputs restart after door open alarm, section 1: n = status of outputs according to odc1; Y=
outputs restart working.
did1 Time interval delay for digital input alarm, section 1:(0
÷
255 min.) With i1F or i2F = EAL1 or
bAL1 (external alarms), “did” parameter defines the time delay between the detection and the
successive signalling of the alarm.
odc2 Compressor status when open door, section 2: no ,Fan = normal;
CPr, F_C = Compressor OFF.
rrd2 Outputs restart after door open alarm, section 2: n = status of outputs according to odc2;
Y= outputs restart working.
did2 Time interval delay for digital input alarm, section 2:(0
÷
255 min.) With i1F or i2F = EAL1 or
bAL1 (external alarms), “did” parameter defines the time delay between the detection and the
successive signalling of the alarm.
OTHER
HES1
Temperature increase during the Energy Saving cycle, section 1: (-30÷30°C /
-54÷54°F) sets the increasing value of the set point1 during the Energy Saving cycle.
HES2
Temperature increase during the Energy Saving cycle, section 2: (-30÷30°C /
-54÷54°F) sets the increasing value of the set point2 during the Energy Saving cycle.
Adr1
RS485 serial address, section 1 (1÷247): Identifies section 1 address when connected
to a ModBUS compatible monitoring system.
Adr2
RS485 serial address, section 2 (1÷247): Identifies section 2 address when connected
to a ModBUS compatible monitoring system.
If Adr1 = Adr2
dP1 First probe display
dP2 Second probe display
dP3 Third probe display
OnF Stand-by function: n = Stand-by function not enabled; y = Stand-by function enabled (under
SET key control).
rEL Release software: (read only) Software version of the microprocessor.
Ptb Parameter table: (read only) it shows the original code of the
dIXEL
parameter map.
Pr2 Access to the protected parameter list (read only).
