3-2
s
tartup
/ o
pEratIon
P/N 3018126_E
U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
P/N 3018126_E
3-3
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
SMG8B & SSG8B
XR 75
Code XR 75 Parameter
XR 75 Function
XR 75
Default
SSG
SMG
SEt
Temperature Setpoint
LS to US
-5
17
19
Hy
Differential
(0.1 to 25.5°C / 1 to 255°F)Intervention differential for setpoint. Compressor
Cut IN is se differential (Hy).Compressor Cut OUT is when the
temperature reaches the setpoint.
2
9
6
LS
Minimum setpoint
(-100°C to SEt/-148°F to SEt)Sets the minimum value for the setpoint.
-50
10
12
US
Maximum setpoint
(SEt to 110°C/ SEt to 230°F)Set the maximum value for the setpoint.
110
33
26
ot
Thermostat probe calibration
(-12.0 to 12.0°C; -120 to 120°F)Allows to adjust possible offset of the
thermostat probe.
0
0
0
P2P
Evaporator probe presence
n = not present: the defrost stops by time y = present: the defrost stops
by temperature
Y
n
n
oE
Evaporator probe calibration
(-12.0 to 12.0°C; -120 to 120°F)Allows to adjust possible offset of the
evaporator probe.
0
0
0
P3P
Third probe presence (P3)
n = not present; the terminals 18-20 operate as digital input y = present;
the terminals 18-20 operate as third probe
n
n
n
o3
Third probe calibration (P3)
(-12.0 to 12.0°C; -120 to 120°F) Allows to adjust possible offset of the third
probe.
0
0
0
P4P
Fourth probe presence
(n = not present; y = present)
n
n
n
o4
Fourth probe calibration
(-12.0 to 12.0°C) Allows to adjust possible offset of the fourth probe.
0
0
0
Ods
Outputs activation delay at startup
(0 to 255 min) This function is enabled at the initial start up of the device
and inhibits any output acti-vation for the period of time set in the
parameter.
0
0
0
Ac
Anti-short cycle delay
(0 to 50 min) Minimum interval between the compressor stop and the
following restart.
1
2
2
rtr
Percentage of the second andfirst
probe for regulation (0 to100; 100
= P1, 0 = P2 )
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).
100
100
100
CCt
Compressor ON time during
continuous cycle
(0.0 to 24.0 hr; res. 10 min)Allows to set the length of the continuous cycle:
compressor stays ON without interruption for the CCt time. Can be used, for
instance, when the room is filled with new products.
0
0
0
CCS
Setpoint for continuous cycle
(-100 to 150°C)Sets the setpoint used during the continuous cycle.
-5
17
19
Con
Compressor ON time with faulty
probe
(0 to 255 min)Time during which the compressor is active in case of faulty
thermostat probe. WithCon = 0, compressor is always OFF.
15
6
6
CoF
Compressor OFF time with faulty
probe
(0 to 255 min)Time during which the compressor is OFF in case of faulty
thermostat probe. When CoF= 0, compressor is always active.
30
2
2
CF
Temperature measurement unit
°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).
C
F
F
rES
Resolution (for °C)
(in = 1°C; dE = 0.1°C) Allows decimal point display.
dE
dE
dE
Lod
Device 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
P1
P1
Red
X- REP display (optional)
(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
P1
P1
dLy
Display delay
(0 to 20.0 min; resul. 10 seconds) When the temperature increases, the
display is updated of 1°C/1°F after this time.
0
0
0
dtr
Percentage of the second and first
probe for visualization when Lod =
dtr (0 to 100; 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).
50
100
100
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.
rtC
in
in
tdF
Defrost type
EL = electrical heater in = hot gas
EL
EL
EL
dFP
Probe selection for defrost
termination
nP = no probe P1 = thermostat probe P2 = evaporator probe P3 =
configurable probe P4 = probe on Hot Key plug
P2
P1
P1
dtE
Defrost termination temperature
(-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.
8
48
48
IdF
Interval between defrost cycles
(0 to 120 hr) Determines the time interval between the beginning of two
defrost cycles.
6
24
24
MdF
(Maximum) length for defrost
(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.
30
90
90
dSd
Start defrost delay
(0 to 99 min) This is useful when different defrost start times are necessary
to avoid overloading the plant.
0
0
0
dFd
Temperature displayed during
defrost
(rt = real temperature; it = temperature at defrost start; SEt = setpoint; dEF =
dEF la-bel)
it
Def
Def
dAd
MAX display delay after de-frost
(0 to 255 min)Sets the maximum time between the end of defrost and the
restarting of the real roomtemperature display.
30
30
30
Fdt
Drip time
(0 to 120 min)Time interval between reaching defrost termination
temperature and the restoring of thecontrollers normal operation. This time
allows the evaporator to eliminate water drops that might have formed due
to defrost.
0
0
0
dPo
First defrost after start-up
(y = immediately; n = after the IdF time)
n
y
y
dAF
Defrost delay after continuouscycle
(0 to 23.5 hr)Time interval between the end of the fast freezing cycle and the
following defrost relatedto it.
0
0
0
FnC
Fans operating mode
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
O-n
O-y
O-y
Fnd
Fans delay after defrost
(0 to 255 min) Interval between end of defrost and evaporator fans start
10
0
0
FCt
Temperature differential avoiding
short cycles of fans
(0 to 59°C; FCt = 0 function disabled) If the difference in temperature
between the evaporator and the room probes is morethan the value of the
FCt parameter, the fans are switched ON.
10
0
0
FSt
Fans stop temperature
(-50 to 50°C/ 122°F) Setting of temperature, detected by the evaporator
probe, above which fans are always OFF.
2
2
2
Fon
Fan ON time
(0 to 15 min) With Fnc=C_n or C_y, (fan activated in parallel with
compressor). Sets the evaporator fan ON cycling time when the compressor is
OFF. When Fon=0 and FoF not equal to 0, the fans are always OFF, with
Fon=0 and FoF=0, the fans are always OFF.
0
0
0
FoF
Fan OFF time
(0 to 15 min)With Fnc=C_n or C_y, (fan activated in parallel with compressor).
Sets the evaporator fan OFF cycling time when the compressor is OFF. When
Fon=0 and FoF not equal to 0, the fans are always OFF, when Fon=0 and
FoF=0, the fans are always OFF.
0
0
0
FAP
Probe selection for fan
management
nP = no probe P1 = thermostat probe P2 = evaporator probe P3 =
configurable probe P4 = probe on Hot Key plug
P2
nP
nP
ACH
Kind of regulation for auxiliary
relay
Ht = heating CL = cooling
CL
CL
CL
SAA
Setpoint for auxiliary relay
(-100 to 150.0°C; -148 to 302°F) Defines the room temperature setpoint to
switch auxiliary relay.
0
0
0
SHy
Differential for auxiliary output
(0.1 to 25.5°C/ 1 to 255°F)Intervention differential for auxiliary output
setpoint. When ACH = CL, AUX Cut in is SAA + SHy; AUX Cut out is SAA
When ACH = Ht , AUX Cut in is SAA - SHy; AUX Cut out is SAA
2
2
2
ArP
Probe selection for auxiliary
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
nP
nP
nP
Sdd
Auxiliary relay OFF during defrost
n = the auxiliary relay operates during defrost y = the auxiliary relay is
switched OFF during defrost
n
n
n
ALP
Probe selection for alarm
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
P1
P1
P1
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 setpoint.
Temperature alarm is enabled whenthe temperature exceeds the SEt + ALU or
SEt - ALL values.
Ab
Ab
Ab
ALU
Maximum temperature alarm
(SEt to 150°C; SEt to 302°F)When this temperature is reached, the alarm is
enabled, after the ALd delay time.
110
56
56
ALL
Minimum temperature alarm
(-100 to SEt; -148°C to 230°F)When this temperature is reached, the alarm is
enabled, after the ALd delay time.
-50
10
10
AFH
Differential for temperature alarm
recovery
(0.1 to 25.5°C; 1 to 45°F) Intervention differential for recovery of
temperature alarm. It is also used for the restartof the fan when the FSt
temperature is reached.
2
4
4
ALd
Temperature alarm delay
(0 to 255 min) Time interval between the detection of an alarm condition
and alarm signaling.
15
30
30
dAo
Exclusion of temperature alarmat
start-up
(from 0.0 min to 23.5 hr)Time interval between the detection of the
temperature alarm condition after devicepower ON and alarm signaling.
1.3
2
2
AP2
Probe selection for temperature
alarm of condenser
nP = no probe P1 = thermostat probe P2 = evaporator probe P3 =
configurable probe P4 = probe on Hot Key plug
P4
nP
nP
AL2
Low temperature alarm of
condenser
(-100 to 150°C) When this temperature is reached, the LA2 alarm is signaled,
possibly after the Ad2 delay.
-40
-40
-40
AU2
High temperature alarm of
condenser
(-100 to 150°C)When this temperature is reached, the HA2 alarm is signaled,
possibly after the Ad2 delay.
110
110
110
AH2
Differential for temperature
condenser alarm recovery
(0.1 to 25.5°C; 1 to 45°F)
5
52
52
Ad2
Condenser temperature alarm
delay
(0 to 255 min)Time interval between the detection of the condenser alarm
condition and alarm signaling.
15
15
15
dA2
Condenser temperature alarm
exclusion at start up
(from 0.0 min to 23.5 hr, res. 10 min)
1.3
1.3
1.3
bLL
Compressor OFF with low
temperature alarm of condenser
n = no: compressor keeps on working Y = yes, compressor is switched OFF
until the alarm is present, in any case regulation restarts after Ac time at
minimum.
n
n
n
AC2
Compressor OFF with high
temperature alarm of condenser
n = no: compressor keeps on working Y = yes, compressor is switched OFF
until the alarm is present, in any case regulation restarts after Ac time at
minimum.
n
n
n
tbA
Alarm relay silencing (with
oA3=ALr)
n= silencing disabled: alarm relay stays ON until alarm condition lasts y
=silencing enabled: alarm relay is switched OFF by pressing a key during an
alarm
y
y
y
oA3
Fourth relay configuration (1-4)
dEF, FAn: do not select it! ALr: alarm; Lig: light; AUS: Auxiliary relay; onF:
alwaysON with device ON; db= neutral zone; cP2 = do not select it!; dEF2: do
not select it!; HES: night blind
Lig
Alr
Alr
AOP
Alarm relay polarity
Set if the alarm relay is open or closed when an alarm happens. CL=
terminals 1-4 closed during an alarm oP = terminals 1-4 open during an
alarm
CL
CL
CL
i1P
Digital input polarity (18-20)
oP = the digital input is activated by opening the contact CL = the digital
input is activated by closing the contact
CL
CL
CL
i1F
Digital input configuration (18-20) dor = door switch functiondEF = activation of a defrost cycle
dor
dor
dor
i2P
2nd digital input polarity (18-19)
oP = the digital input is activated by opening the contact CL = the digital
input is activated by closing the contact
CL
CL
CL
i2F
2nd digital input configuration(18-
19)
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 ES = energy
saving AUS = auxiliary relay activation with oA3 = AUS Htr = kind of action
inversion (cooling - heating) FAn = fan HdF = Holiday defrost (enable only
with RTC) onF = to switch the controller OFF
EAL
EAL
EAL
did
(0 to 255 min) with i2F= EAL or i2F
= bAL digital input alarm delay (18-
20)
Delay between the detection of the external alarm condition and its signaling.
When i2F= PAL: time for pressure switch function: time interval to calculate
the number of the pressure switch activation.
15
15
15
doA
Door open signaling delay
(0 to 255 min)
15
15
15
nPS
Pressure switch number
(0 to 15) Number of activation of the pressure switch, during the did interval,
before signaling the alarm event (i2F = PAL). If the nPS activation in the did
time is reached, switch OFF and ON the device to restart normal regulation.
15
15
15
Odc
Compressor status when open
door
no = normal Fan = fan OFF CPr = compressor OFF F_C = compressor and
fan OFF
F-C
F-C
F-C
rrd
Outputs restart after doA alarm
no = outputs not affected by the doA alarm yES = outputs restart with the
doA alarm
y
y
y
HES
Temperature increase during the
Energy Saving cycle
(-30.0°C to 30.0°C) Sets the increasing value of the setpoint during the Energy
Saving cycle.
0
0
0
Adr
Serial address (1 to 244)
Identifies the device address when connected to a MODBUS compatible
monitoring system.
1
1
1
pbC
Type of probe
Allows to set the kind of probe used by the device: Pt1 = Pt1000 probe ntc
= NTC probe
ntc
ctc
ctc
onF
ON/OFF key enabling
not used = disabled oFF = enabled ES = not set it
dP1
Thermostat probe display
dP2
Evaporator probe display
dP3
Third probe display - optional
dP4
Fourth probe display
rSE
Real setpoint
Shows the setpoint used during the energy saving cycle or during the
continuous cycle.
rEL
Software release
For internal use only
Ptb
Parameter table code
Read-only
OTHER PARAMETERS
ALARMS
CONDENSER TEMPERATURE ALARM
AUXILIARY RELAY
DIGITAL INPUTS
Dixell XR75
REGULATION
DEFROST
FANS
AUXILIARY THERMOSTAT CONFIGURATION (terms. 1-4) - oA3 = AUS
Controller Parameters
