PAR.
DESCRIPTION
RANGE
DEFAULT
VALUE*
LEVEL**
U.M.
dPO
Determines when instrument starts up if
the defrosting cycle must be activated (if the
temperature on the evaporator allows this)
y=defrosting activated at start-up
n=defrosting not activated at start-up
n/y
n
1-2
flag
tcd
minimum time for each compressor state
before defrosting “Ontime if >0; “Offtime if >0
-31...31
0
2
min
Cod
Compressor “Off” time before defrost cycle.
The compressor is not turned on if a defrost cycle
is expected in the time indicated by the parameter.
0=Function excluded
0...60
0
2
min
Defrosting controller
-dEF label
NOTE: At level 1 the folders will only display all the level 1 parameters. At level 2 the folders will only display all the
level 2 parameters. The symbol 1-2 indicates the parameters that are displayed at both menu levels
Alarms-AL label
Att
Determines if “LAL” and “HAL” are expressed as
absolute values or as a differential related to the
set point
0=absolute value
1=value related to set point
0/1
0
2
flag
AFd
Alarm differential
1.0...50.0
2.0
1-2
°C/°F
HAL (2)
Maximum alarm. Temperature limit (whose
absolute or relative value status is regulated by
“Att”) above which the alarm is activated.
LAL...150.0
50.0
1-2
°C/°F
LAL (2)
Minimum alarm. Temperature limit (whose
absolute or relative value status is regulated by
“Att”) below which the alarm is activated.
-50.0...HAL
-50.0
1-2
°C/°F
PAO (3)
Alarm exclusion time after start-up of instrument
following a power failure
0...10
0
1-2
hours
dAO
Alarm exclusion time after defrosting
0...999
0
1-2
min
EWDR 981
5/8
OAO
High and low temperature alarm delay after
disabling digital input
(door closed)
0...10
0
2
hours
tdO
Time out after alarm signal when
digital input is
disabled (door open)
0...250
0
2
min
tAO (3)
Temperature alarm delay time
0...250
0
1-2
min
EAL
External alarm to lock controllers
n=does not lock,
y=locks
n/y
n
2
flag
AOP
Polarity of alarm output:
0 = alarm active and output disabled;
1 = alarm active and output enabled
0/1
1
2
flag
PbA
Configuration of temperature alarm on
probe 1 and/or 3:
0=on probe 1 (thermostat control)
1=on probe 3 (display)
2=on probe 1 and 3 (thermostat control and display)
3=on probe 1 and 3 (thermostat control and display)
on external threshold
0/1/2/3
0
2
num
SA3
Probe 3 alarm set point
-50.0...150.0
50
2
°C/°F
dA3
Probe 3 alarm differential
-30.0...30.0
2.0
2
°C/°F
dt
Dripping time
0...250
0
1-2
min
Light & digital inputs
Lit Label
dLt
Light relay disabling delay after closing
door if “dSd”=y
0...31
0
2
min
OFL
Light relay disabled even if disabling delay
“dLt” is active
n/y
n
2
flag
dAd
Delay in activating digital input
0...255
0
2
min
dOd
Digital input switches off loads
n/y
n
2
flag
dSd
Light relay enable from door switch.
n = door open, light does not turn on;
y = door open, light turns on (if it was off)
n/y
y
2
flag
