Clock And Time Band Parameters - Carel easy User Manual

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4.11 Clock and time band parameters

The RTC (Real Time Clock), not available on the easy compact models, is
used to manage the defrost function, curtain switch/night-time operation
and AUX output in real time. The user can enable/disable the clock and
set the current time using dedicated parameters.
In particular, up to 4 time bands can be set for managing the defrosts,
one band for managing night-time operation and one for activating the
AUX output.
The clock alarm fault "EtC" is activated only if the clock is eff ectively used,
that is, has been enabled, the time has been set and there is at least one
valid time band.
Setting the clock:
1. press the SET button for more than 3 s (if there are active alarms,
fi rst mute the buzzer) the display shows the parameter code "PS"
(password);
2.
press the SET button to access the password setting and use the
UP and DOWN buttons to scroll the numbers until displaying "22"
(password to access the confi guration parameters);
3.
press the SET button to confi rm the password;
4. use the UP and DOWN buttons to scroll the names of the parameters
until reaching the parameter tEn;
5.
press SET to display the value associated with the parameter;
6.
use the UP and DOWN buttons until reaching the value 1 for enabling
the clock;
7. press SET to temporarily save the new value and display the parameter
again;
8.
repeat the operation to set the values of the parameters dAY (day of
the week), hr (hours), Min (minutes). For easy split, also set YEr, Mon,
dMo;
9.
at the end of the operations, press the SET button for more than 3
seconds to permanently save the selected values and exit.
Setting the time bands:
Perform the operations from point 1 to point 7 above, then:
•
select the parameter relating to the required band (e.g. d1d= DEFROST
TIME BAND 1 DAY setting);
•
press SET to display the status of the parameter;
•
use the UP and DOWN buttons until reaching the desired value;
•
press SET to temporarily save the new value and return to the previous
display;
•
repeat the operation to set the values of the parameters d1h
(TIME BAND 1 HOUR setting), d1m (TIME BAND 1 MINUTES setting)
•
at the end of the operations, press the SET button for more than
3 seconds to permanently save the selected values and exit.
RTC clock parameters
tEn enable RTC (tEn=1 RTC enabled)
YEr (easy split only): current year;
Mon (easy split only): current month;
dMo (easy split only): day of the month;
dAY: current day of the week (1...7= Monday to Sunday);
hr current hour (24 h)
Min current minutes
Example: to set the current time and date to 15.07 on Thursday 3 May
2007, set:
tEn=1,
YEr=07, Mon=05, dMo=03 (easy split only)
dAY=4, hr=15, Min=7
The controller will save the time and the day of the week, month and year
(on easy and easy compact controllers the month and year are ignored).
Note: the instrument does not manage automatic changeover to
daylight saving.
easy/easy compact/easy split +030220791 - rel. 3.2 - 13.07.2010
Parameters for setting up to 4 defrost time bands
d1d...d4d Defrost event day setting
d1d...d4d=0 no defrost event
d1d...d4d=1...7 Monday to Sunday
d1d...d4d=8 from Monday to Friday
d1d...d4d=9 from Monday to Saturday
d1d...d4d=10 Saturday & Sunday
d1d...d4d=11 every day
d1h...d4h Defrost event hour setting (24h)
Defrost event minutes setting
d1M...d4M
Example: To program a defrost call (d1d) every Saturday & Sunday at
19.31, set: d1d=10 (days) d1h=19 (hours), d1M=31 (min).
Important: the defrost event only involves a defrost call. Whether Important:
the defrost is eff ectively run and the duration of the cycle depend
on the status of the controller when the call is activated.
Parameters for setting the night-time set point time band
nOd Night-time set point time band day setting
nOd= 0 no event set
nOd= 1...7 Monday to Sunday
nOd= 8 from Monday to Friday
nOd= 9 from Monday to Saturday
nOd= 10 Saturday & Sunday
nOd=11 every day
nOh Night-time band set point start hours
nOM Night-time band set point start minutes
nFd Night-time band set point end day
nFh Night-time band set point end hours
nFM Night-time band set point end minutes
In easy split models, entering night time band involves the automatic
modifi cation of the set point and the light output (if H1=4)
Example: To program the night-time set point (nOd) every day from
12.31 to 13.29, set: nOd=11 (days), nOh=12 (start hours), nOM=31 (start
minutes), nFh=13 (end hours) and nFM=29 (end minutes).
During night-time operation, the set point is varied: night-time set point
= st +r4 (in direct mode), night-time set point = st -r4 (in reverse mode).
Where featured, the protective curtain also closes the cabinet (A4=4).
Parameters for setting the AUX output activation time band
AOd AUX output activation time band day setting
AOd= 0 no event set
AOd= 1...7 Monday to Sunday
AOd= 8 from Monday to Friday
AOd= 9 from Monday to Saturday
AOd= 10 Saturday & Sunday
AOd= 11 every day
AOh AUX output activation time band start hours
AOM AUX output activation time band start minutes
AFd AUX output deactivation time band end day
AFh AUX output activation time band end hours
AFM AUX output activation time band end minutes
Example: To program the activation of the AUX output every day from
12.31 at 13.29, set: AOd=11 (days), AOh=12 (start hours), AOM=31 (start
minutes), AFh=13 (end hours) and AFM=29 (end minutes).
Important Important : the activation the AUX output activation time band is
linked to parameters H1=3 and A4≠6/7/8 and for easy split
A4≠10,11.
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