Controller Parameters - Hussmann Freedom Line series Installation & Operation Manual

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Controller Parameters

XR 75
Code XR 75 Parameter
SEt Temperature Setpoint
Hy Differential
LS Minimum setpoint
US Maximum setpoint
ot Thermostat probe calibration
P2P Evaporator probe presence
oE Evaporator probe calibration
P3P Third probe presence (P3)
o3 Third probe calibration (P3)
P4P Fourth probe presence
o4 Fourth probe calibration
Ods Outputs activation delay at start u p
Ac Anti-short cycle delay
Percentage of the second and f irst
probe for regulation (0 to 1 00; 100
rtr = P1, 0 = P2 )
Compressor ON time during
CCt continuous cycle
CCS Setpoint for continuous cycle
Compressor ON time with f aulty
Con probe
Compressor OFF time with faulty
CoF probe
CF Temperature measurement unit
rES Resolution (for °C)
Lod Device display
Red X- REP display (optional)
dLy Display delay
Percentage of the second and first
probe for visualization when Lod =
dtr dtr (0 to 100; 100 = P1, 0 = P2 )
Defrost mode (only for controller
EdF with RTC)
tdF Defrost type
Probe selection for defrost
dFP termination
dtE Defrost termination temperature
IdF Interval between defrost cycles
MdF (Maximum) length for defrost
dSd Start defrost delay
Temperature displayed during
dFd defrost
dAd MAX display delay after de- f rost
Fdt Drip time
dPo First defrost after start-up
dAF Defrost delay after continuous c ycle
FnC Fans operating mode
P/N 0527427_M
Fnd Fans delay after defrost
Temperature differential avoid i ng
FCt short cycles of fans
FSt Fans stop temperature
/ e
lectRIcal
Dixell XR75
XR 75 Function
LS to US
REGULATION
(0.1 to 25.5°C / 1 to 255°F) I ntervention differential for setpoint. Compressor
Cut IN is setpoint + differential (Hy). C ompressor Cut OUT is when the
temperature reaches the setpoint.
(-100°C to SEt/-148°F to SEt) S ets the minimum value for the setpoint.
(SEt to 110°C/ SEt to 230°F) S et the maximum value for the setpoint.
(-12.0 to 12.0°C; -120 to 120°F) A llows to adjust possible offset of the
thermostat probe.
n = not present: the defrost stops by time
by temperature
(-12.0 to 12.0°C; -120 to 120°F) A llows to adjust possible offset of the
evaporator probe.
n = not present; the terminals 18-20 operate as digital input
the terminals 18-20 operate as third probe
(-12.0 to 12.0°C; -120 to 120°F) A llows to adjust possible offset of the third
probe.
(n = not present; y = present)
(-12.0 to 12.0°C) A llows to adjust possible offset of the fourth probe.
(0 to 255 min) This function is enabled at the initial start up of the device
and inhibits any output acti- v ation for the period of time set in the
parameter.
(0 to 50 min) M inimum interval between the compressor stop and the
following restart.
Allows to set the regulation according to the percentage of the first and
second probe, a s for the following formula (rtr(P1-P2)/100 + P2).
(0.0 to 24.0 hr; res. 10 min) A llows to set the length of the continuous cycle:
compressor stays ON without interrup t ion for the CCt time. Can be used, for
instance, when the room is filled with new prod u cts.
(-100 to 150°C) S ets the setpoint used during the continuous cycle.
(0 to 255 min) T ime during which the compressor is active in case of faulty
thermostat probe. With C on = 0, compressor is always OFF.
(0 to 255 min) T ime during which the compressor is OFF in case of faulty
thermostat probe. When CoF = 0, compressor is always active.
°C = Celsius, °F = Fahrenheit, (CAUTION! When the measurement unit is
changed, the setpoint and the values of the parameters Hy, LS, US, ot, ALU
and ALL have to be checked and modified if necessary).
(in = 1°C; dE = 0.1°C) Allows decimal point display.
(P1; P2, P3, P4, SEt, dtr) Selects which probe is displayed by the device: P1 =
Thermostat probe P2 = Evaporator probe; P3 = Third probe (only for models
with this option enabled), P4 = Fourth probe, SEt= setpoint, dtr =
percentage of visualization
(P1; P2, P3, P4, SEt, dtr) Selects which probe is displayed by the device: P1 =
Thermostat probe P2 = Evaporator probe; P3 = Third probe (only for models
with this option enabled), P4 = Fourth probe, SEt= setpoint, dtr =
percentage of visualization
(0 to 20.0 min; resul. 10 seconds) When the temperature increases, the
display is updated of 1°C/1°F after this time.
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
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.
EL = electrical heater in = hot gas
nP = no probe P1 = thermostat probe P2 = evaporator probe P3 =
configurable probe P4 = probe on Hot Key plug
(-50 to 50°C/ -58 to 122°F) (Enabled only when EdF = Pb) Sets the temperature
measured by the evaporator probe, which causes the end of defrost.
(0 to 120 hr) Determines the time interval between the beginning of two
defrost cycles.
(0 to 255 min) 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.
(0 to 99 min) This is useful when different defrost start times are necessary
to avoid overloading the plant.
(rt = real temperature; it = temperature at defrost start; SEt = setpoint; dEF =
dEF la- b el)
(0 to 255 min) S ets the maximum time between the end of defrost and the
restarting of the real room t emperature display.
(0 to 120 min) T ime interval between reaching defrost termination
temperature and the restoring of the c ontrollers normal operation. This time
allows the evaporator to eliminate water drops t h at might have formed due
to defrost.
(y = immediately; n = after the IdF time)
(0 to 23.5 hr) T ime interval between the end of the fast freezing cycle and the
following defrost related t o it.
FANS
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
U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • WWW.HUSSMANN.COM
(0 to 255 min) Interval between end of defrost and evaporator fans start
(0 to 59°C; FCt = 0 function disabled) I f the difference in temperature
between the evaporator and the room probes is more t han the value of the
FCt parameter, the fans are switched ON.
(-50 to 50°C/ 122°F) Setting of temperature, detected by the evaporator
probe, above which fans are always OFF.
/ c
ontRolleR
XR 75
Default
-5
2
-50
110
0
y = present: the defrost stops
Y
0
y = present;
n
0
n
0
0
1
100
0
-5
15
30
C
dE
P1
P1
0
50
rtC
EL
P2
8
6
30
0
it
30
0
n
0
O-n
10
10
2
DF5NX CF5X DDF5NX
31 32 38
4 4 4
24 23 31
38 38 45
0 0 0
n n n
0 0 0
n n n
0 0 0
n n n
0 0 0
0 0 0
2 2 2
100 100 100
0 0 0
31 32 38
3 3 3
2 2 2
F F F
dE dE dE
P1 P1 P1
P1 P1 P1
0 0 0
100 100 100
in in in
EL EL EL
P1 P1 P1
48 48 40
6 6 24
45 45 50
0 0 0
Def Def Def
30 30 30
0 0 0
n n n
0 0 0
O-y O-y O-y
0 0 0
0 0 0
2 2 2