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Emerson Dixell XW60LH Installing And Operating Instructions page 3

Digital controller for medium-low temperature refrigeration applications

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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
Instrument display: (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.
rEd
X-REP display (optional): (P1; P2, P3, P4, SET, dtr) it selects which probe is
displayed by X- REP. 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
Display delay: (0 to 20min00s; res. 10s) when the temperature increases, the
display is updated of 1°C or 1°F after this time.
dtr
Percentage of the second and first probe for visualization when Lod=dtr: (0 to
99; 100=P1, 0=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 Ld1 to Ld6 parameters on
workdays and Sd1 to Sd6 on holidays.
- 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 termination: (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 termination 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 defrost cycles: (0 to 120hours) determines the interval of time
between two defrost cycles.
MdF
(Maximum) length for 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 99min) this is useful when different defrost start times are
necessary to avoid overloading the plant.
dFd
Temperature displayed during defrost: (rt; it; SEt; dEF) rt = real temperature;
it = temperature at defrost start; SEt = set point; dEF = "dEF" label.
dAd
MAX display delay after defrost: (0 to 255min) sets the maximum time between the
end of defrost and the restarting of the real room temperature display.
Fdt
Drip time: (0 to 120min) 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.
dPo
First defrost after start-up: (n; Y) n = after the idF time, Y = immediately.
dAF
Defrost delay after continuous cycle: (0.0 to 24h00min, res. 10min) time interval
between the end of the fast freezing cycle and the following defrost related to it.
FANS
FnC
Fans operating mode: (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
Fans delay after defrost: (0 to 255min) interval between end of defrost and evaporator
fans start.
FCt
Temperature differential to avoid fan short cycles: (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.
FSt
Fans stop temperature: (-55 to 50°C; -67 to 122°F) setting of temperature, detected
by evaporator probe, above which fans are always OFF.
Fon
Fan ON time: (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 is off.
With Fon=0 and FoF≠0 the fan are always off, with Fon=0 and FoF=0 the fan are
always off.
FoF
Fan OFF time: (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.
FAP
Probe selection for fan management: (nP; P1; P2; P3; P4) nP = no probe;
P1 =thermostat probe; P2 = evaporator probe; P3 =configurable probe; P4 = Probe on
Hot Key plug.
AUXILIARY THERMOSTAT CONFIGURATION
ACH
Kind of regulation for auxiliary relay: (Ht; CL) Ht = heating; CL = cooling.
SAA
Set Point for auxiliary relay: (-55.0 to 150.0°C; -67 to 302°F) it defines the room
temperature set point to switch auxiliary relay.
SHY
Differential for auxiliary output: (0.1 to 25.5°C; 1 to 45°F) intervention differential for
auxiliary output set point.
ACH=CL, AUX Cut in is [SAA+SHY]; AUX Cut out is SAA.
ACH=Ht, AUX Cut in is [SAA–SHY]; AUX Cut out is SAA.
ArP
Probe selection for auxiliary: (nP; P1; P2; P3; P4) nP = no probe, the auxiliary relay
is switched only by the digital input; P1 = Probe 1 (Thermostat probe); P2 = Probe 2
(evaporator probe); P3 = Probe 3 (display probe); P4 = Probe 4.
Sdd
Auxiliary relay off during defrost: (n; Y) n = the auxiliary relay operates during
defrost. Y = the auxiliary relay is switched off during defrost.
1592036000 XW60LH GB r1.0 18.03.2015
ALARMS
ALP
Probe selection for alarm: (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.
ALL
Minimum temperature alarm:
If ALC=Ab: [-55°C to ALU; -67 to ALU]
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.
AFH
Differential for temperature alarm recovery: (0.1 to 25.5°C; 1 to 45°F) intervention
differential for recovery of temperature alarm.
ALd
Temperature alarm delay: (0 to 255 min) time interval between the detection of an
alarm condition and alarm signalling.
dAo
Exclusion of temperature alarm at start-up: (0.0 to 24h00min, res. 10min) time
interval between the detection of the temperature alarm condition after instrument
power on and alarm signalling.
CONDENSER TEMPERATURE ALARM
AP2
Probe selection for temperature alarm of condenser: (nP; P1; P2; P3; P4)
nP = no probe; P1 = thermostat probe; P2 = evaporator probe; P3 = configurable
probe; P4 = Probe on Hot Key plug.
AL2
Low temperature alarm of condenser: (-55 to 150°C; -67 to 302°F) when this
temperature is reached the LA2 alarm is signalled, possibly after the Ad2 delay.
Au2
High temperature alarm of condenser: (-55 to 150°C; -67 to 302°F) when this
temperature is reached the HA2 alarm is signalled, possibly after the Ad2 delay.
AH2
Differential for temperature condenser alarm recovery: 0.1 to 25.5°C; 1 to 45°F.
Ad2
Condenser temperature alarm delay: (0 to 255 min) time interval between the
detection of the condenser alarm condition and alarm signalling.
dA2
Condenser temperature alarm exclusion at start up: 0.0 to 24h00min, res. 10min.
bLL
Compressor off with low temperature alarm of condenser: (n; Y) n = compressor
keeps on working; Y = compressor is switched off till the alarm is present, in any case
regulation restarts after AC time at minimum.
AC2
Compressor off with high temperature alarm of condenser: (n; Y) n = compressor
keeps on working; Y = compressor is switched off till the alarm is present, in any case
regulation restarts after AC time at minimum.
OUTPUT RELAY
tbA
Alarm relay silencing (with oAx =ALr): (n; Y) n = silencing disabled: alarm relay stays
on till alarm condition lasts. Y = silencing enabled: alarm relay is switched OFF by
pressing a key during an alarm.
oA3
Third relay configuration (X60LT: terminals 1-3): (dEF; FAn; ALr; LiG; AUS; onF; db;
dEF2; HES) dEF = defrost; FAn = do not select it; ALr = alarm; LiG = light; AUS =
Auxiliary relay; onF = always on with instrument on; db = neutral zone; dEF2 = do not
select it; HES = night blind.
AoP
Alarm relay polarity: (CL; oP) it set if the alarm relay is open or closed when an alarm
occurs. CL = terminals closed during an alarm; oP = terminals open during an alarm.
DIGITAL INPUTS
i1P
Digital input polarity (13-14): oP: the digital input is activated by opening the contact;
CL: the digital input is activated by closing the contact.
i1F
Digital input configuration (13-14): EAL= external alarm: "EA" message is displayed;
bAL= serious alarm "CA" message is displayed. PAL= pressure switch alarm, "CA"
message is displayed; dor= door switch function; dEF= activation of a defrost cycle;
AUS=not enabled; Htr= kind of action inversion (cooling – heating); FAn= not set it;
ES= Energy saving; HdF = Holiday defrost (enable only with RTC); onF = to switch the
controller off.
did
(050÷255 min) with i1F= EAL or i1F = bAL digital input alarm delay (13-14): delay
between the detection of the external alarm condition and its signalling.
with i1F= dor: door open signalling delay
with i1F= PAL: time for pressure switch function: time interval to calculate the
number of the pressure switch activation.
i2P
2
digital input polarity (13-19): oP: the digital input is activated by opening the
nd
contact; CL: the digital input is activated by closing the contact.
i2F
2
digital input configuration (13-19): EAL= external alarm: "EA" message is
nd
displayed; bAL= serious alarm "CA" message is displayed. PAL= pressure switch
alarm, "CA" message is displayed; dor= door switch function; dEF= activation of a
defrost cycle; AUS=not enabled; Htr= kind of action inversion (cooling – heating); FAn=
not set it; ES= Energy saving; HdF = Holiday defrost (enable only with RTC); onF = to
switch the controller off.
d2d
(0÷255 min) with i2F= EAL or i2F= bAL 2
between the detection of the external alarm condition and its signalling.
with i2F= dor: door open signalling delay
with i2F= PAL: time for pressure switch function: time interval to calculate the
number of the pressure switch activation.
nPS
Pressure switch number: (0
the "did" interval, before signalling the alarm event (I2F= PAL).
If the nPS activation in the did time is reached, switch off and on the instrument
to restart normal regulation.
odC
Compressor status when open door: (no; FAn; CPr;F_C: no = normal; Fan = Fan
OFF; CPr = Compressor OFF; F_C = Compressor and fan OFF.
rrd
Outputs restart after door open alarm: (n; Y) n = outputs follow the odC parameter.
Y = outputs restart with a door open alarm.
HES
Delta temperature during an Energy Saving cycle: (-30.0 to 30.0°C; -54 to 54°F) it
sets the increasing value of the set point [SET+HES] during the Energy Saving cycle.
XW60LH
digital input alarm delay (13-19): delay
nd
15) Number of activation of the pressure switch, during
÷
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