Carel plug-in User Manual page 45

tr: added HA alarm delay
This parameter is saved in the HACCP module and is different from the alarm detection delay (parameter Ad) of the plug-in
instrument. The HA alarm detection delay is the sum of the two tr + Ad.
Warning: if tr = 0 the detection of the HA and HF alarms is disabled.
Def.: 0 null delay and HACCP functions disabled
to: global reset of alarms HA and HF
This parameter has two functions:

display of the status of alarms HA and HF (1 = alarm present);

reset the alarms if set to zero.
The parameter is displayed only if there are alarms present, otherwise it is not displayed, nor are all the parameters for recording
the status of the alarms (see below).
The reset function sets all the parameters for recording the status of alarms HA and HF to zero.
t1 - t 8 parameters to set the request for programmed defrost
These parameters are used to define eight defrost events, set by time (day, hour, minute). At the set times the HACCP module
sends a defrost request to the connected plug-in instrument. These parameters are normally not displayed, in that they refer to
distinct operations in respect to the effective HACCP functions. They can be displayed and modified only after having entered the
correct "password" (parameter PS) before accessing the t parameters.
To set the values, there are three parameters for each of the eight events t1,... t8:
 the parameter for the day is indicated by a segment (1 in Fig. 8.3.4.1) which appears together with the number of the event
(t1,...t8) and is indicated by  t1,...  t8
 the parameter for the hours is indicated by a segment (2 in Fig. 8.3.4.1) and is indicated by  t 1,...  t8
 the parameter for the minutes is indicated by a segment (3 in Fig. 8.3.4.1) and is indicated by  t1,...  t8
 t1,...  t8: defrost event day
This parameter defines the day of the week that the defrost is performed for one the eight possible events, a single day or group of
days can be selected. The parameter can have the following values:
value description
0 null event; in this case the two parameters associated to the hours and minutes are not
displayed
1, ...., 7 selection of a single day Monday,... Sunday
8 selection of weekdays: from Monday to Friday
9 selection of weekends: Saturday and Sunday
10 all days
 t1,...  t8: defrost event hour
This parameter defines the hour at which the defrost is performed, the possible values are from 0 to 23.
 t1,...  t8: of defrost event minute
This parameter defines the minute at which the defrost is performed, the possible values are from 0 to 59.
Cod. +030221881 rel. 1.5 - 26/10/10 45
Tab. 8.3.6.2
plug-in