Osaka F 200 - 4.7 COMPRESSOR PROTECTION FUNCTION AND DELAY TO START; 4.8 DEFROST CONTROL; 4.8.1 AUTOMATIC START DEFROST

OSAKA - F 200 / F 300 / TSF 200 / TSF 300 / M3 - User Manual - V.2 - PAG. 6
o ff
O ut
O ut
(o t)
(H E )
o ff
0N
SP
P r1
T e m p .
o ff
0N
r.d
r.d
tim e
0N
o ff
All protections set time in the next paragraph (P.P1, P.P2, P.P3)
always and only output configured as "ot".
In case of probe error is possible to perform that the output
configured as "ot" works cyclically time programmed on par. "R.t1"
(activation time) and "r.t2" (deactivation time) during error.
When an error occurs the probe Pr1, the instrument comes with the
activation of the "ot" exit time "r.t1" when disabled by the time "r.t2"
and so on if the error remains.
When an error occurs in the probe Pr1, the device proceeds to
activate the output "ot" for time "r.t1", proceeds to disable the time
"r.t2" and so on while the error remains.
Programming "r.t1" = oF the output in probe error condition will
always be off.
Programming instead of "r.t1" any value "r.t2" = oF the output in
probe error condition will be always on.
Note that the operation of the temperature controller may be
subject to the following function: "Protection of compressor and
delay timer to" "defrost" open door "and" external alarm with lock
out "with digital input.
4.7 – COMPRESSOR PROTECTION FUNCTION AND DELAY TO
START
The compressor protection feature helps to avoid very frequent
compressor starts or it can also be useful for control in time for the
relay output to an actuator or intended load.
Activate this function provides 3 types of timing choices as
appropriate to the regulatory system.
The protection is to prevent multiple starts during the time of
protection.
The first provides a delay time to the activation of the output
according to the time set in the "P.P1" parameter (delay to
start).
T e m p .
o ff
ON
SP
tim e
r.d
o ff o ff o ff
ON ON
P r1
O ut
(o t)
The second time, foresee a delay on relay of control, in order to
ensure a minimum time between the arrest and the progress of the
relay parameter: "P.P2" (delay after stop or minimum
downtime).
ON
o ff
P .P 2 P .P 2 P .P 2
SP
T e m p .
tim e
r.d
ON ON
o ff o ff
P r1
O ut
(o t)
The third period foresee not allow starts if has not exceeded the
programmed time between consecutive starts. Parameter "P.P3"
(delay after consecutive
starts).
P .P 3
o ff
SP
ON
T e m p .
P .P 3 P .P 3
tim e
r.d
o ff o ff
ON ON
P r1
(o t)
O ut
During all phases of inhibition caused by protection, LED signals
the activation of the regulation output (Cool or Heat) flashing.
You can also activate a delay to the start of the regulation when
power arrives to the thermostat. The "P.od" parameter is useful
when there are multiple thermostats, for not start loads at the
same time and allowing a smoother power line or protect to power
failures that prevent no discontinuous starts booting.
During this phase delay visualize od alternating the normal viewing
programmed.
The timer function described is deactivated programming the
parameter = oF.
4.8 – DEFROST CONTROL
The control mode for defrosts acts on the output programmed as
"ot" and "dF".
The type of defrost is set in parameters "d.dt" that can be
programmed:
= EL – By ELECTRICAL RESISTANCE (or compressor stop): This
modality in defrost mode has the compressor output "ot" off, while
"dF" output is activated. Not using "dF" output will obtain defrost by
stopping the compressor.
= in – HOT CYCLE GAS or INVERSION CYCLE: during defrost,
output "ot" and "df" are enabled.
= no – NO FUNCTION OUTPUT COMPRESSOR: With this mode,
during defrost output "ot" continues to work as a function of
temperature controller while the output "dF" is activated).
= Et – ELECTRIC DEFROST THERMOSTATED: With this mode
during defrost output "ot" is disabled, while "Df" output acts as a
temperature controller of evaporator on defrosting.
This selection is end defrost by time ("d.De"). During defrosting, the
"Df" output behaves as a control for temperature regulation, in
heating mode with Set = "d.Te" and with fixed hysteresis of 1 º C
and cooling the temperature measured by the evaporator probe set
to probe (EP).
4.8.1 – AUTOMATIC START DEFROST
The defrosting is done automatically because the device is
configured by time intervals.
Automatic defrost is obtained by programming par. "D.Di" time
required between defrosts.
The first defrosting to connection of equipment can be programmed
in par. "D.Sd".
This allows to do the first defrost on different interval seted in the
parameter "D.Di".
If you want on device start, this perform a defrost cycle (provided
that the conditions stated in the par. "D.tS" and "d.tE" indicated and
described below) program the par. "D.Sd" = oF.
This allows defrost the evaporator always when they have frequent
power outages that may cause cancellations in defrost cycles.
If you wish only standard rhythms between defrost cycles, set the
value of "d.Sd" to value = "D.Di" to cancel the start defrosting.
Establishing "D.Di" = oF, the defrost at intervals are disabled
(including the first, regardless of the time imposed in par. "D.Sd".
Through the "d.Dc" parameter is possible to set the mode of how
the defrosting is done. The start mode of automatic defrosting is
described below:
= rt – At intervals of real-time connection. Intervals "D.Di" are the
account total time since the device turns on. This method is one of
the more used in most refrigeration systems.