D = Parameters For The Defrost Management - Carel IR32M Manual

d = Parameters for the defrost management

DEFROSTING PARAMETERS
d0 Type of defrosting (0=resistance, 1= hot gas)
dl Interval between defrosts
dt End of defrost temp setpoint
dP Max duration of defrost
d4 Defrost at power ON (0=no, 1=yes)
d5 Defrost delay from power ON or start of Multifunction
d6 Interrupt display during defrost
dd Dripping time
d8 Alarm cut-out time after defrost and/or open door
d9 Defrost priority over compressor protection (0=no, 1=yes)
d/ Reading defrost sensor
dC Time basis (0=hours/min, 1=minutes/seconds)
Note: for the set times to become operative, the instrument must be switched off and on again.
d0: Type of defrosting
This parameter sets the type of defrosting for equipment fitted with defrosting relays:
0 = defrosting by resistance;
1 = defrosting by hot gas.
Default: d0=0, resistance defrosting. Available on IR32Y, IR32P, IR32C and IRDRC.
Note: see the following chapter "Notes for the new release" to a more detailed description of this parameter
functionalities, effective for the instrument with serial number greater than 100,000)
dI: Interval between two defrost cycles
Defrosting is effected periodically at intervals equivalent to dI (in hours or minutes, see parameter dC). The
dI period is counted from the END of the previous defrost. If the period equals 0 (dI=0), defrosting will not
begin unless commanded by the keypad or a digital input. Temperature alarms are over-ridden during
defrosting.
Default: 8 (hours). Available on IR32S, IRDRSE/S0, IR32Y, IR32P, IR32C and IRDRC.
Parameter with direct access from remote control.
dt: SETPOINT for temperature at end of defrost
On equipment supplied with an end of defrost sensor (IR32Y with H1=1, IR32C and IR32P), this parameter
allows the temperature of the evaporator requested at the end of defrosting to be set. (The temperature of
the evaporator is taken from the defrosting sensor.) If, at the start of a defrosting cycle, the temperature
indicated by the defrosting sensor is higher than the temperature set for the end of defrosting, the cycle will
not be effected. In the case of a malfunction of the defrosting sensor, control will effect a defrost lasting for a
period equivalent to the value set for dP. Thus if the end of defrost setpoint can not be reached, the
defrosting will be interrupted after a maximum period equivalent to the value in minutes of dP, and the fault
will be displayed Ed. This will remain displayed until a "correct" defrosting cycle is effected, or there is a
change in temperature.
Default: 4°C. Available on IR32Y, IR32P, IR32C and IRDRC.
Parameter with direct access from remote control.
dP: Maximum duration of defrosting
This parameter determines duration of the defrosting in minutes (or seconds, see parameter dC). On
equipment without defrost sensors on the evaporator (IR32S with H1=1 and IR32Y with H1=0), this
parameter represents the actual duration of the defrost.
Default: 30 minutes. Available on IR32S, IRDRSE/S0, IR32Y, IR32P, IR32C and IRDRC.
Parameter with direct access from remote control.
Note: see the following chapter "Notes for the new release" to a more detailed description of this parameter
functionalities, effective for the instrument with serial number greater than 100,000)
Type
C
F
F
F
C
C
C
F
F
C
F
C
21
Min Max Unit
0 1 flag
0 199 ore
-40 +199 °C/°F
1 199 min
0 1 flag
0 199 min
0 1 flag
0 15 min
0 15 ore
0 1 flag
- - °C/°F
1 1 flag
Cod. +030220151 - Rel. 2.1 - 04/09/98
Def
0
8
4
30
0
0
1
2
1
0
-
0