Hussmann SMG8B Installation & Operation Manual page 20

Lod Device display
s
3-4
tartup
Red X- REP display (optional)
dLy Display delay
Controller Parameters
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
Fnd Fans delay after defrost
Temperature differential avoid i ng
FCt short cycles of fans
FSt Fans stop temperature
Fon Fan ON time
FoF Fan OFF time
Probe selection for fan
FAP manage m ent
AUXILIARY THERMOSTAT CONFIGURATION (terms. 1-4) - oA3 = AUS
Kind of regulation for auxiliary
ACH r elay
SAA Setpoint for auxiliary relay
SHy Differential for auxiliary output
ArP Probe selection for auxiliary
Sdd Auxiliary relay OFF during de f rost
ALP Probe selection for alarm
ALC Temperature alarms configura t ion
ALU Maximum temperature alarm
ALL Minimum temperature alarm
Differential for temperature a larm
AFH recovery
ALd Temperature alarm delay
Exclusion of temperature alarm a t
dAo start-up
Probe selection for temperature
AP2 a larm of condenser
Low temperature alarm of
P/N 3018126_E
AL2 con d enser
High temperature alarm of
AU2 con d enser
Differential for temperature
AH2 condenser alarm recovery
Condenser temperature alarm
(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 =
/ o Thermostat probe P2 = Evaporator probe; P3 = Third probe (only for models
pEratIon
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
(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.
(0 to 15 min) With Fnc=C_n or C_y, (fan activated in parallel with
compressor). Sets the evaporator f an 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 to 15 min) W ith Fnc=C_n or C_y, (fan activated in parallel with compressor).
Sets the evaporator f an 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.
nP = no probe P 1 = thermostat probe
configurable probe P 4 = probe on Hot Key plug
Ht = heating C L = cooling
(-100 to 150.0°C; -148 to 302°F) Defines the room temperature setpoint to
switch auxiliary relay.
(0.1 to 25.5°C/ 1 to 255°F) I ntervention differential for auxiliary output
setpoint. When ACH = CL, AUX Cut in is SAA + SHy; AUX Cut out is SAA
W hen ACH = Ht , AUX Cut in is SAA - SHy; AUX Cut out is SAA
nP = no probe, the auxiliary relay is switched only by the digital input
Probe 1 (thermostat probe) P2 = Probe 2 (evaporator probe)
Probe 3 (display probe) P4 = Probe 4
n = the auxiliary relay operates during defrost
switched OFF during defrost
ALARMS
nP = no probe, the temperature alarms are disabled P 1 = Probe 1
(thermostat probe) P2 = Probe 2 (evaporator probe) P3 = Probe 3 (display
probe) P4 = Fourth probe
(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 when t he temperature exceeds the SEt + ALU or
SEt - ALL values.
(SEt to 150°C; SEt to 302°F) W hen this temperature is reached, the alarm is
enabled, after the ALd delay time.
(-100 to SEt; -148°C to 230°F) W hen this temperature is reached, the alarm is
enabled, after the ALd delay time.
(0.1 to 25.5°C; 1 to 45°F) I ntervention differential for recovery of
temperature alarm. It is also used for the restart o f the fan when the FSt
temperature is reached.
(0 to 255 min) T ime interval between the detection of an alarm condition
and alarm signaling.
(from 0.0 min to 23.5 hr) T ime interval between the detection of the
temperature alarm condition after device p ower ON and alarm signaling.
CONDENSER TEMPERATURE ALARM
nP = no probe P1 = thermostat probe P2 = evaporator probe P 3 =
configurable probe P 4 = probe on Hot Key plug
(-100 to 150°C) When this temperature is reached, the LA2 alarm is signaled,
possibly after the Ad2 de l ay.
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(-100 to 150°C) W hen this temperature is reached, the HA2 alarm is signaled,
possibly after the Ad2 de l ay.
(0.1 to 25.5°C; 1 to 45°F)
(0 to 255 min) T ime interval between the detection of the condenser alarm
rtC
O-n
P2 = evaporator probe P3 =
P 1 =
P3 =
y = the auxiliary relay is
110
-50
1.3
-40
110
P1 P1 P1
P1 P1 P1
0 0 0
50 100 100
in in
EL EL EL
P2 P1 P1
8 48 48
6 24 24
30 90 90
0 0 0
it Def Def
30 30 30
0 0 0
n y y
0 0 0
O-y O-y
10 0 0
10 0 0
2 2 2
0 0 0
0 0 0
P2 nP nP
CL CL CL
0 0 0
2 2 2
nP nP nP
n n n
P1 P1 P1
Ab Ab Ab
56 56
10 10
2 4 4
15 30 30
2 2
P4 nP nP
-40 -40
110 110
5 52 52