1592020670 XRi77CX-CH GB r1.1 15.10.2019
XRi77CX-CH
4/9
MCo
Maximum time with compressor active:
(0 to 255 min) if compressor working time
is over MCo, it will be stopped. MCo=0 means function disabled.
rtr
F(P1; P2) percentage for regulation:
(0 to 100; 100=P1, 0=P2) it allows to set the
regulation according to the percentage of the first and second probe, as for the
following formula (rtr(P1-P2)/100 + P2).
CCt
Maximum duration for Pull Down:
(0.0 to 24h00min, res. 10min) allows setting the
length of the PULL-DOWN cycle. Compressor stays on without interruption during
CCt
time. This is useful, for instance, when the room is filled with new products.
CCS
Differential for Pull Down:
(-12 to 12°C; -21 to 21°F) relative value to add to the
regulation SETPOINT and to use during any PULL-DOWN cycle.
oHt
Threshold for automatic activation of Pull Down in normal mode:
(0.0 to 25.5°C;
0 to 45°F) upper threshold for auto activation of a PULL DOWN
Con
Compressor ON time with faulty probe:
(0 to 255min) time during which the
compressor is active in case of faulty thermostat probe. With
Con=0
compressor is
always OFF.
CoF
Compressor OFF time with faulty probe:
(0 to 255min) time during which the
compressor is OFF in case of faulty thermostat probe. With
CoF=0
compressor is
always active.
Pon
Inverter compressor speed during ton (in percentage):
0 to 100%
SCd
Deactivation of the ONOFF compressor:
(th1; th2) define when ONOFF compressor is
stopped.
th1
=when T<SET+HY;
th2
when t<SET
ton
Delay before activation of the second compressor (when T> SET + HY + HY1):
0 to
255 sec
toF
Delay before deactivation of the second compressor:
0 to 255 sec
don
Minimum operating time of the second compressor:
0 to 255 sec
VARIABLE SPEED COMPRESSOR CONTROL
HY1
Differential for normal regulation (compressor cut-in):
(0.1 to 25.5°C; 1 to 45°F)
Fr0
Frequency output value with compressor stopped:
([0 Hz ÷ FMi])
PMi
Minimum drive speed (in percentage):
(0 to PMA)
PMA
Maximum drive speed (in percentage):
(PMi to 100%)
voS
Compressor speed variation (increment) when temperature is increasing:
(1 to
100 Hz/min, StP) StP = means that inverter speed is adapted immediately on
temperature variation
vo2
Compressor speed variation (decrement) when temperature is decreasing:
(0 to
100 Hz/min, StP, nu) StP = means that inverter speed is adapted immediately on
temperature variation; nu = speed decrement disabled
vo3
Compressor speed variation (decrement) after any Pull Down:
(0 to 100 Hz/min,
StP, nu) StP = means that inverter speed is adapted immediately on temperature
variation; nu = speed decrement disabled
PdP
Variable Speed Drive (in percentage) during any Pull Down:
0 to 100 %
t1F
Time with Variable Speed Drive at minimum before stopping it:
0 to 999 min
Spi
Variable Speed Drive (in percentage) in case of any error probe:
PMi to PMA
Aod
Variable Speed Drive (in percentage) during any defrost:
PMi to PMA
AoF
Variable Speed Drive (in percentage) during a pre-defrost phase
: PMi to PMA
tH1
Differential for deadlock control:
0.1 to 1.0°C
oFS
Compressor speed increment during any deadlock condition:
1 to 10Hz
CMn
Continuous mode regulation when normal mode:
(n; Y)
CME
Continuous mode regulation when energy saving mode:
(n; Y)
MnP
Minimum compressor speed for activating lubrication control (valid only for
Variable Speed Drive):
(nu, 1÷99%, OFF) nu = function disabled; OFF = compressor
is stopped for tMA time
tMi
Compressor running time below the MnP threshold:
(0.0 to 24h00min)
tMA
Lubrication control interval:
0 to 255 min
PROBES
PbC
Temperature probe selection:
ntC; PtC; PT1000
ot
Probe P1 calibration:
(-12.0 to 12.0°C; -21 to 21°F) allows to adjust possible offset
of the thermostat probe.
P2P
Probe P2 presence:
(n; Y)
n
= not present, the defrost stops by time;
Y
= present, the defrost stops by temperature.
oE
Probe P2 calibration:
(-12.0 to 12.0°C; -21 to 21°F) allows to adjust possible offset
of the evaporator probe.
P3P
Probe P3 presence:
(n; Y)
n
= not present, the terminals 18-20 operate as digital
input;
Y
= present, the terminals 18-20 operate as third probe.
o3
Probe P3 calibration:
(-12.0 to 12.0°C; -21 to 21°F) allows to adjust possible offset
of the third probe.
P4P
Probe P4 presence:
(n; Y)
n
= not present;
Y
= present
o4
Probe P4 calibration:
(-12.0 to 12.0°C; -21 to 21°F) allows to adjust possible offset
of the fourth probe
DISPLAY
CF
Temperature measurement unit:
(°C; °F) °C = Celsius; °F = Fahrenheit.
WARNING: When the measurement unit is changed the SET point and the values of
the parameters HY, LS, US, ot, ALU and ALL have to be checked and modified (if
necessary).
rES
Resolution for °C:
(in=1°C; dE=0.1°C) allows decimal point display.
Lod
Probe visualized
(P1; P2, P3, P4, SET, dtr) it selects which probe is displayed by the
instrument. P1 = Thermostat probe; P2 = Evaporator probe; P3 = Third probe (only for
model with this option enabled); P4 = Fourth probe, SET = set point; dtr = percentage
of visualization.
dLY
Temperature visualization delay:
(0 to 20min00s; res. 10 sec) when the temperature
increases, the display is updated of 1°C or 1°F after this time.
dtr
Visualization percentage=F(P1;P2)
: (1 to 99; 99=P1, 1=P2) if Lod=dtr it allows to set
the visualization according to the percentage of the first and second probe, as for the
following formula (dtr(P1-P2)/100 + P2).
DEFROST
EdF
Defrost mode (only for controller with RTC): rtC
=Real Time Clock mode. Defrost
time follows dd1...dd6 and Ld1
…
Ld6 parameters on working days.
in
=interval mode.
The defrost starts when the time idF is expired.
tdF
Defrost type:
(EL; in) EL = electrical heater; in = hot gas.
dFP
Probe selection for defrost control:
(nP; P1; P2; P3; P4) nP = no probe;
P1 =thermostat probe; P2 = evaporator probe; P3 =configurable probe; P4 = Probe on
Hot Key plug.
dtE
Defrost end temperature:
(-55 to 50°C; -67 to 122°F) (enabled only when EdF=Pb)
sets the temperature measured by the evaporator probe, which causes the end of
defrost.
idF
Interval between two consecutive defrost cycles:
(0 to 120 hours) determines the
interval of time between two defrost cycles.
MdF Maximum length for any defrost:
(0 to 255min) when P2P=n, (not evaporator probe:
timed defrost) it sets the defrost duration. When P2P=Y (defrost end based on
temperature) it sets the maximum length for defrost.
dSd
Start defrost delay:
(0 to 255 sec) when a defrost starts, the compressor will be
stopped and the defrost output delayed. If
dSd=0
this function is disabled.
StC
Compressor stop before activating any defrost
: (0 to 255 sec) is used to delay the
compressor restart when the defrost is managed for inversion of cycle (hot-gas).
dFd Displaying during any defrost:
(rt; it; Set; dEF) rt = real temperature;
it = temperature at defrost start; Set = set point; dEF
= “
dEF
” label
.
dAd
Delay for display temperature update after any defrost:
(0 to 255min) sets the
maximum time between the end of a defrost and the beginning of the visualization of
the real room temperature.
Fdt
Draining time:
(0 to 120min) time interval between reaching defrost termination
temperature and t
he restoring of the control’s normal operation. This time allows the
evaporator to eliminate water drops that might have formed due to defrost.
Hon
Time with drain heater activated after drainig time Fdt (valid is oAx=HEt):
(0.0 to
24h00min, res. 10 min) the heating elements stay on for this time after finishing the
dripping phase.
dPo
Defrost after power on:
(n; Y) n = after the idF time or following RTC, Y = immediately.
dAF
Pre-defrost time
: (0 to 255 min) it is used to sub freeze the goods before activating
any defrost. The regulation setpoint is modified to SET-1°C or SET-2°F during this
interval. If dAF=0 this function is disabled.
FANS
FAP
Probe selection for evaporator fan:
(nP; P1; P2; P3; P4) nP = no probe;
P1 =thermostat probe; P2 = evaporator probe; P3 =configurable probe; P4 = Probe on
Hot Key plug.
FSt
Evaporator fan stop temperature:
(-50 to 50°C; -55 to 122°F) setting of temperature,
detected by evaporator probe, above which fans are always OFF.
HY
Differential for evaporator fan regulator:
(0.1 to 25.5°C; 1 to 45°F)
FnC
Evaporator fan mode operation:
(C-n; o-n; C-Y; o-Y) C-n = runs with the compressor,
OFF during defrost; o-n = continuous mode, OFF during defrost; C-Y = runs with the
compressor, ON during defrost; o-Y = continuous mode, ON during defrost.
Fnd
Evaporator fan delay after defrost:
(0 to 255min) interval between the end of a
defrost and the next evaporator fans start.
FCt
Temperature differential for evaporator fan activation:
(0 to 59°C; 0 to 90°F) (N.B.:
FCt=0 means function disabled) if the difference of temperature between the
evaporator and the room probes is higher than FCt value, the fans will be switched on.
Ft
Evaporator fan controlled during any defrost:
(n;Y)
Fon
Evaporator fan ON in normal mode (with compressor OFF):
(0 to 15min)
with Fnc=C_n or C_Y, (fan activated in parallel with compressor) it sets the evaporator
fan ON cycling time when the compressor i
s off. With Fon=0 and FoF≠0 the fan are
always off, with Fon=0 and FoF=0 the fan are always off.
FoF
Evaporator fan OFF in normal mode (with compressor OFF):
(0 to 15min)
With FnC=C_n or C_Y, (fan activated in parallel with compressor) it sets the evaporator
fan off cycling time when the compressor is off.
With Fon=0 and FoF≠0 the fan are always off, with Fon=0 and FoF=0 the fan are
always off.
FAC
Probe selection for condenser fan:
(nP; P1; P2; P3; P4) nP = no probe;
P1 =thermostat probe; P2 = evaporator probe; P3 =configurable probe; P4 = Probe on
Hot Key plug.
St2
Set Point for condenser fan regulator:
(-100.0 to 150.0°C; -148 to 302°F)
HY2
Differential for condenser fan regulator:
(0.1 to 25,5°C; 1 to 45°F)
FCC
Condenser fan mode operation:
(C-n; o-n; C-Y; o-Y) C-n = runs with the compressor,
OFF during defrost; o-n = continuous mode, OFF during defrost; C-Y = runs with the
compressor, ON during defrost; o-Y = continuous mode, ON during defrost
FCo
Condenser fan activated when compressor off (valid if FCC=C-n, C-Y):
(0 to 999
sec
AUXILIARY
ACH
Type of action for auxiliary regulator:
(CL; Ht) CL=cooling; Ht = heating
SAA
Set point for auxiliary regulator:
(-100.0 to 150.0°C; -148 to 302°F)
SHY
Differential for auxiliary regulator:
(0.1 to 25.5°C; 1 to 45°F)
ArP
Probe selection for auxiliary regulator:
(nP; P1; P2; P3; P4) nP = no probe;
P1 =thermostat probe; P2 = evaporator probe; P3 =configurable probe; P4 = Probe on
Hot Key plug.
Sdd
Auxiliary regulator disabled during any defrost:
(n; Y)
n
=the auxiliary relay
operates during defrost.
Y
=the auxiliary relay is switched off during defrost.
ALARMS
ALP
Temperature alarm probe selection:
(nP; P1; P2; P3; P4) nP = no probe, the
temperature alarms are disabled; P1 = Probe 1 (Thermostat probe); P2 = Probe 2
(evaporator probe);
P3 = Probe 3 (display probe); P4 = Fourth probe.
ALC Temperature alarms configuration:
(Ab; rE) Ab = absolute temperature, alarm
temperature is given by the ALL or ALU values. rE = temperature alarms are referred
to the set point. Temperature alarm is enabled when the temperature exceeds the
[SET+ALU] or [SET-ALL] values.
ALU
Maximum temperature alarm:
If ALC=Ab: [ALL to 150.0°C or ALL to 302°F]
If ALC=rE: [0.0 to 50.0°C or 0 to 90°F]
when this temperature is reached the alarm is enabled, after the Ald delay time.
