Ascon tecnologic TLY25 User Manual

The parameter “PSC” can be set as:
= 1 : Power on delay
T e m p .
O u t
P tC
o ff
O N
S P
P t CP tC
"P S C " = 1
tim e
H S E t
o ff o ff o ff
O N O N
P r1
= 2 : Delay after power off
O N
O u t
o ff
P t C P t C P t C
S P
T e m p .
" P S C " = 2
tim e
H S E t
O N O N
o ff o ff
P r 1
= 3 : Delay between power on phases.
P tC
O u t
o ff
S P
O N
T e m p .
P tC P tC
tim e
H S E t
"P S C " = 3
o ff o ff
O N O N
P r1
The function is disabled by programming “PtC” = 0.
Through the parameter “LCt” it is also possible to set the minimum
activation time of the output to avoid switching on of the
compressor that is too short.
During the power on delay phases of the OUT output by inhibiting
the function “Compressor Protection” or delay of power off caused
by the minimum function time “LCt”, the led OUT flashes.
It is also possible to prevent activation of all the outputs after the
instrument is turned on, for the time set in the parameter “od”.
The function is disabled by “od” = OFF.
During the power on delay phase, the display shows the indication
od, alternating with the normal programmed visualisation.
4.6 - DEFROST CONTROL
All the parameters concerning the defrosting control that acts on
the outputs configured as “Out” and “dEF”, are container in the
group “
]
dEF”.
The type of defrosting that the instrument must carry out is set by
the parameter “dtyP” that can be programmed:
= EL - WITH ELECTRICAL HEATING or BY STOPPING
COMPRESSOR (during defrosting, the output “Out” is deactivated
while the output “dEF” is enabled)
= in - WITH HOT GAS or INVERSION OF CYCLE (during
defrosting the outputs “Out” and “dEF” are enabled)
The automatic defrosting can take place at intervals or if the
instrument has an internal clock, at set hours.
Defrosting at intervals is possible by setting the time that runs
between the two next automatic defrostings in the parameter
“dint”.
Counting this interval is set through the parameter "dCt" that can
be programmed:
= rt - counts the total function time (instrument on)
= ct - counts only the compressor function time (output OUT
switched on)
= cS - the instrument carries out a defrosting cycle at each
compressor stop (i.e. at each deactivation of the output OUT). If
this option is used, set “dint”=OFF.
if the instrument has an internal clock, it is possible to carry out up
to 6 defrostings per day at set times.
To use this mode, it is necessary to set the parameter "dint"=OFF
so that the defrosting at intervals is disabled and to set the
parameters “dF 1”, “dF 2”, “dF 3”, “dF 4”, “dF 5”, “dF 6” with
the times when the defrosting must be carried out.
The automatic defrosting cycle can be at time intervals or, if an
evaporator probe is used (Pr2), when a temperature is reached.
If the evaporator probe is not used (par. “Pr 2” = OFF) the duration
cycle is set by the parameter “dEFE”.
If instead the evaporator probe is used (parameter “Pr 2” = on) the
defrosting takes place when the temperature measured by the
probe exceeds the temperature set in the parameter “tEdF”.
If this temperature is not reached in the time set in the parameter
“dEFE”, defrosting is interrupted.
In order to avoid pointless defrosting the parameter. “tSdF” is
foreseen that sets the enablement temperature for defrosting
If the temperature measured by the probe is higher than the one
set in the parameter “tSdF” and in the parameter "tEFE" the
defrosting is inhibited.
(NO def.)
(defrost)
tEdF
dEF
off
ON
tSdF
dint
1
Pr2
Temp.
(defrost)
dint
dEFE
2
dint
dint
3
time
off off
ON
Examples: defrosting 1 ends due to reaching of temperature
“tEdF”, defrosting 2 ends at the end of the “dEFE” time as the
temperature “tEdF” is not reached, defrosting 3 does not take place
as the temperature is higher than “tSdF”.
At the end of defrosting, it is possible to delay the new start up of
the compressor (output “Out”) at the time set in parameter “tdCO”
to allow the evaporator to drain.
During this delay, the led Def flashes to indicate the draining state.
It is also possible to prevent start up of the compressor near to
defrosting, to avoid waste of energy.
If inside the time set in the parameter “COFd” (counted in advance
compared to the start up of automatic defrosting both at intervals
and by clock), an activation request for the output “Out” should take
place, this does not take place and it is signalled by the flashing of
the Out led.
If one wishes to set a defrosting cycle every time the instrument is
switched on (as long as the conditions set in the parameters “tSdF”
and "tEFE" apply) programme the parameter “SdEF” = yES.
This allows the evaporator to be permanently defrosted, even when
frequent interruptions to power supply occur that may cause the
cancellation of the various defrosting cycles.
During the defrosting, it may occur that the temperature measured
by the cell probe (Pr1) increases excessively (this obviously
depends on the position of the probe Pr1 compared to the
evaporator).
In the event that one does not wish this increase to be visualised
by the instrument, it is possible to use the functions in the
parameter “dLo” (Block display during defrosting) and “Etdu”
(Differential unblocking of display after defrosting).
The parameter “dLo” = On allows the temperature Pr1 visualisation
to be blocked on the last reading during a whole defrosting cycle
and until the temperature does not return under the value [”SP” +
“Etdu”] after defrosting has finished (or the time set in the
parameter "dALd" contained in the block “
]
AL”).
With “dLo” = Lb, this allows visualisation of the writing dEF during
defrosting and at the end of defrosting the writing PdEF up to when the
temperature Pr1 does not return below the value [”SP” + “Etdu”] (or the
time set on the parameter "dALd" contained in the block “
]
AL”).
Alternatively with the “dLo” = OFF, during defrosting, the instrument will
continue to visualise the temperature measured by the probe Pr1.
Ascon Tecnologic - TLY25 - OPERATING INSTRUCTIONS - PAG. 5

Ascon tecnologic TLY25 Specifications

General

Brand	Ascon tecnologic
Model	TLY25
Category	Controller
Language	English