= 6
- Selecting the active set point (SP/SPE) with contact normally
open: on closing the digital input the temperature set point “SPE”
is activated. When instead the input is open the set point “SP” is
active.
= 7
- Switching on/switching off (Stand-by) of instrument by contact
normally open: on closing the digital input the instrument is
switched on while it is placed in Stand-by when opened.
= 8
- "Turbo" cycle activation command with normally-open contact:
closing the input starts a "turbo" cycle.
= -1, -2, -3, etc.
- Like function with positive values but with
function logic reversed (contact normally closed)
4.5 - OUTPUTS AND BUZZER CONFIGURATION
The instrument outputs can be configured by the relative
parameters
“o.o1” , “o.o2” “o.o3”.
The outputs can be configured for the following functions:
= ot
- to control the compressor or however, the temperature
control device
= dF
- to control the defrosting device
= Fn
- to control the fans
= Au
- to control the auxiliary device
= At
- to control a silenceable alarm device through a contact that
is normally open, and then closed when the alarm sounds
= AL
- to control an alarm that cannot be silenced through a
contact that is normally open and closed when the alarm sounds.
= An
- to control an alarm with a memory function through a
contact that is normally open and closed when the alarm sounds
(see alarm memory).
= -t
- to control a silenceable alarm device through a contact that is
normally closed, and then open when the alarm sounds.
= -L
- control an alarm that cannot be silenced through a contact
that is normally closed and open when the alarm sounds.
= -n
- to control an alarm with a memory function through a contact
that is normally closed and open when the alarm sounds.
= on
- Output on when the instrument is in on state. This mode can
be used to control lights, non-misting resistance on room door or
other utilities
= HE
- to control an heating device in neutral zone control mode
(“r.HC” = nr).
= oF
- Disabled output
The function carried out for auxiliary output (par. desired output =
Au) is defined by the parameter
“o.Fo”
and the function is
conditioned by the time set in parameter
“o.tu”.
The parameter “o.Fo” can be configured for the following functions:
= oF
- Auxiliary output not active
= 1
- Temperature control output delayed with contact normally
open: the auxiliary output is activated with delay that can be set on
the parameter "o.tu" compared to the output configured as ot. The
output is then turned off at the same time as the ot output is
disabled. This function mode can be used as a command for a
second compressor or for all other working utilities according to the
same ot output conditions, but which must be delayed after the
start up of the compressor to avoid excess electricity absorption.
= 2
- Activation by front key (U or DOWN/AUX): the output is
activated by pressing the keys U or DOWN/AUX suitably
configured (“t.UF” or “t.Fb” = 1) These commands have a bi-stable
function, Which means that when first pressed, the output key is
activated while the second is disabled. In this mode, the AUX
output can be turned off automatically after a certain time that can
be set on the parameter "o.tu". With "o.tu" = oF the output is
activated and deactivated only manually, using the key (U or
DOWN/AUX) or via the digital input. Differently, the output, once
activated, is turned off automatically after the set time. This
function can be used, for example, as a cell light command, for
non-misting resistance or other utilities.
= 3
- Light output managed by Active set point ( "economy"
function).
This output will be on in “normal” mode (Set Point "SP" active) and
off in economy mode operation (Set Point "SP2" active).
= 4
- Internal Light output managed by digital input. This output will
be on when door is opened (“i.Fi”= 1, 2, 3).
The internal buzzer (if present) can be configured by par.
“o.bu”
for the following functions:
oF
= Buzzer always disable
1
= Buzzer signal active alarms only
2
= Buzzer signal key pressed only (no alarm)
3
= Buzzer signal active alarms and key pressed
4.6 - TEMPERATURE CONTROL
The instrument's method of regulation is of ON/OFF type acting on
the "ot"- and "HE"-configured outputs in response to: the reading of
the Pr1 probe; the active set point(s)
“SP”
(or
“SPE”
and/or
“SPH”
); the intervention differential
“r.d”
(or
“r.Ed”
and/or
“r.Hd”
); and the operating mode
“r.HC”
.
Via the parameter
“r.HC”
the following functions can be obtained:
= C (Cooling) or = H (Heating)
As regards the operating mode programmed in the "r.HC"
parameter, the regulator automatically assumes that the differential
has positive values for a Refrigeration control (“r.HC”=C), negative
values for the Heating control (“r.HC”=H).
ON
r.HC=C
(ot)
Out
Pr1
Temp.
SP
off
ON
ON
off
r.HC=H
ON
ON
Out
(ot)
time
r.d
SP
off
Temp.
Pr1
off
ON
time
r.d
= nr (Neutral Zone or Cooling and Heating a single set point)
If the parameter “r.HC” is programmed such that “r.HC” = nr the
output configured as “ot” operates with a cooling action (as “r.HC” =
C) whereas the output configured as “HE” operates with a heating
action. In this case the regulating set point for both outputs is
whichever of SP, SPE and SPH is active, and the intervention
differential (“r.d” or “r.Ed” or “r.Hd”) is automatically assumed by the
regulator to have positive values for the cooling action, negative
values for the heating action.
off
Out
Out
(ot)
(HE)
off
0N
SP
Pr1
Tem p.
off
0N
r.d
r.d
time
0N
off
= HC (Cooling and Heating with two independent set points)
SP
(ot)
Out
(HE)
Out
ON
off
off
Pr1
Temp.
time
r.d
r.HC=HC
SPH
r.Hd
off
off
ON
ON
ON
ON
off
off
Similarly, if the parameter “r.HC” is programmed such that “r.HC” =
HC, the output configured as “ot” operates with a cooling action (as
“r.HC” = C) whereas the output configured as “HE” operates with a
heating action.
In this case the regulating set point for the "ot" output is whichever
of SP, SPE and SPH is active, whereas for the output "HE" the set
point is SPH.
ASCON TECNOLOGIC - Y33
- OPERATING INSTRUCTIONS - Vr. 01 - 04/16 - ISTR-MY33-ENG01 - PAG. 6