Carel plug-in PJ32C, User Manual

Page: 26 / 52

SOXJLQ
Cod. +030221881 rel. 1.0 - 11/02/2000 22
GGHIURVWSULRULW\RYHUFRPSUHVVRUSURWHFWLRQ
Overrides the compressor protection times (
F: minimum time between 2 successive starts, F: minimum off time and F: minimum
on time) at the start of the defrost. The possible values are:
0 = the protection times are respected;
1 = the protection times are overridden; the defrost has priority and does not respect the compressor time settings.
It is useful, for example, with hot gas defrost to avoid delaying the defrost in the case where the compressor has just stopped and
there is a minimum time between two starts.
5HPHPEHUKRZHYHUWKDWLQWKLVFDVHWKHPD[LPXPQXPEHURIDFWLYDWLRQVSHU
KRXURIWKHFRPSUHVVRUPD\QRWEHUHVSHFWHG
Def.:
G=0 the defrost respects the compressor time settings (as default these are set to zero). For instruments with a serial number
less than 5000
G=1 by default. Available on all models.
GGHIURVWSUREHUHDGLQJ
Selecting this parameter displays the value read by the defrost probe for instruments where fitted. Once the parameter
G has been
selected, the value of the temperature measured by the defrost probe can not be modified but only read. Available on models Y and
C.
G&WLPHEDVLV
Modifies the unit of measure used to count the times for parameters
G, (defrost interval) and G3 (defrost duration). The possible
values are:
0 =
G, expressed in hours and G3 in minutes;
1 =
G, expressed in minutes and G3 in seconds.
Parameter
G&=1 can be useful to test the operation of the defrost function with reduced times.5HPHPEHUKRZHYHUWKDWLIWKH
GHIURVWUHTXLUHVWKHFRPSUHVVRUWREHRQKRWJDVGHIURVWDQGSDUDPHWHUG WKHFRPSUHVVRUULVNVEHLQJGDPDJHGGXHWR
DQH[FHVVRIVWDUWXSVLQDVKRUWWLPH
Parameter
G&=1 is on the other hand very useful in the event where versions Y and X need to be used to manage air driers. The
defrost cycle thus becomes the condensation discharge cycle, which must occur at close intervals (minutes) and for very brief
durations (seconds).
Def.:
G&=0, that is G,, defrost interval, in hours and G3, maximum defrost duration, in minutes. Available on all models.
$ DODUPPDQDJHPHQWSDUDPHWHUV
DODUPSDUDPHWHUV W\SH PLQ PD[ XRP GHI
$ alarm and fan differential (0= 0.5 °C / °F)
C 0 +19 °C/°F 0
$/ low temperature alarm (difference from set)
F 0 +127 °C/°F 0
$+ high temperature alarm (difference from set)
F 0 +127 °C/°F 0
$G temperature alarm delay
C 0 199 min 120
$ multifunction input configuration
C 0 4 - 0
$ external alarm detection delay ($=1, Multifunct. Input)
C 0 199 min 0
7DE
$DODUPDQGIDQGLIIHUHQWLDO
Represents the differential used to activate the high and low temperature alarms (
$/ and $+) (see figure below) and fan
management (see parameters
)). In the case of an alarm, as seen in the figure, the value of $ determines the actual activation of
the temperature alarms.
Def.: 0 °C (equal to 0.5 °C). Available on all models.
21 21
2)) 2))
6HW3RLQW
W
$ $
allarme bassa temperatura
low temperature alarm
allarme alta temperatura
high temperature alarm
AL
AH
)LJ