Osaka COC 30 User manual

OSAKA OPERATING INSTRUCTIONS –COC 30-Page 1
COC 30
MICROPROCESSOR-BASED
DIGITAL ELECTRONIC
OVENS CONTROLLER
OPERATING INSTRUCTIONS
FOREWORD
This manual contains the information necessary for the product
to be installed correctly and also instructions for its
maintenance and use; we therefore recommend that the
utmost attention is paid to the following instructions.
Though this manual has been issued with the greatest care,
OSAKA. will not take any responsibility deriving from its use.
The same applies to each person or Company involved in the
issuing of this manual.
This document is the exclusive property of OSAKA.which
forbids any reproduction and divulgation , even in part, of the
document, unless expressly authorized.
OSAKA. reserves the right to make any formal or functional
changes at any moment and without any notice.
ÍNDEX
1INSTRUMENT DESCRIPTION
1.1 GENERAL DESCRIPTION
1.2 FRONT PANEL DESCRIPTION
2PROGRAMMING
2.1 RUN/STAND BY
2.2 SELECTING STORED PROGRAMMES
2.3
FAST PROGRAMMING OF SET POINTS AND
POWERS IN %
2.4 SETTING THE TIME AND DAY
2.5 SETTING THE COOKING TIME
2.6 SETTING THE AUTOMATIC SWITCH ON TIME
2.7 PARAMETERS PROGRAMMING
2.8 PARAMETERS PROGRAMMING LEVELS..
3INFORMATION ON INSTALLATION AND USE
3.1 PERMITTED USE
3.2 MECHANICAL MOUNTING
3.3 ELECTRICAL CONNECTIONS
3.4 ELECTRICAL WIRING DIAGRAM
4FUNCTIONS
4.1 MEASURING AND VISUALIZATION
4.2 TEMPERATURE AND POWER REGULATOR
4.3 TEMPERATURE ALARMS
4.4 OVEN LIGHT CONTROL
4.5 STEAMER AND STEAM INJECTION CONTROL
4.6 EXTRACTOR CONTROL
4.7 AUXILIARY OUTPUT AND AUXILIARY REGULATOR
(AUX
4.8 DIGITAL INPUTS
4.9 RS 485 SERIAL INTERFACE
5PROGRAMMABLE PARAMETERS
5.1 PARAMETERS TABLE
5.2 PARAMETERS DESCRIPTION
6PROBLEMS , MAINTENANCE AND GUARANTEE 6
6.1 ERROR SIGNALLING
6.2 CLEANING
6.3 GUARANTEE AND REPAIRS
7TECHNICAL DATA
7.1 ELECTRICAL DATA
7.2 MECHANICAL DATA
7.3 MECHANICAL DIMENSIONS, PANEL CUT-OUT AND
MOUNTING
7.4 FUNCTIONAL DATA
7.5 MEASUREMENT RANGE TABLE
7.6 INSTRUMENT ORDERING CODE
DE
1 –INSTRUMENT DESCRIPTION
1.1 –GENERAL DESCRIPTION
Model COC 30 is a microprocessor-
based digital controller
designed
to command ovens, particularly those used in
bakeries.
The instrument’s main feature is the possibility to have
separate
control over the temperature and heating powers for
the TOP and FLOOR o
f the oven, as well as commanding the
oven’s lighting, extractor, the steamer and the steam injector.
The instrument can store up to 8 different cooking programmes
and
a maximum of 7 relay outputs, up to 4 inputs for
thermocouples (J or K) or thermoresista
nces (Pt100) and 3
configurable digital inputs.
An internal clock makes it possible to programme the oven to
switch
on automatically at the desired time, set cooking time
and, if desired, the automatic switching off of the oven.
The instrument also offers
the possibility of having an RS485
serial communication interface with MODBUS-
RTU
communication protocol.
Other important functions present include: output power
limitation,
automatic steam injection control, temperature
alarms, steamer temperature adjustm
ent, automatic enabling
of extractor fan once
cooking is terminated and configurable
auxiliary output.
1.1.2 -FRONT PANEL DESCRIPTION
1-P Key
: Used for accessing function parameter
programming and for confirming selections.
2 -DOWN (and AUX) Key: Use
d to decrease the values to be
set
and for parameter selection. If held down, it also makes it
possible
to pass to the previous programme level to exit
programming mode.
When not in programming mode and if suitably programmed, it
allows control of the AUX output.
3 -UP (and SEL IN) Key
: Used to increase the values to be
set and
for parameter selection. If held down, it also makes it
possible to
pass to the previous programme level to exit
programming mode.
When not in programming mode, allows display of steam and
auxiliary probe temperatures.
4 -ON/OFF Key
: Used to switch the control device on (RUN
mode) or off (STAND-BY mode).
5 -PW LIM Key: Used to enable/disable the power limiter.
6 -SEL PRG Key: Used to access programme selection

OSAKA OPERATING INSTRUCTIONS –COC 30-Page 2
7 -CLOCK Key: Used to access switching on time, cooking
timeand current time programming.
8 -START Key: Used to start/stop the cooking time or
switching on time counter.
9 -INJ Key: Used to start/stop vapour injection.
10 -STEAM Key: Used to switch on/off steamer heating.
11 -EXTR Key: Used to switch on/off the extractor fan output.
12 -LIGHT Key: Used to switch on/off oven lighting output.
13 -DISPLAY 1: Normally displays the temperature measured
by the oven’s TOP probe.
14 -LED SET1: (flashing) indicates the TOP temperature
setting mode.
15 -DISPLAY 2: Normally displays the temperature measured
by the oven’s FLOOR probe.
16 -LED SET2: (flashing) indicates the FLOOR temperature
setting mode.
17 -LED 1 BAR: Indicates the heating power of the TOP of the
oven.
18 -LED 1 BAR: Indicates the heating power of the FLOOR of
the oven.
19 –CLOCK DISPLAY: Normally displays the current time or
the cooking time when the timer is started.
20 -LIGHT Led: Indicates the status of the oven lighting
output.
21 -EXTR Led: indicates the status of the extractor fan output.
22 -STEAM Led: Indicates the status of the steamer heating
regulator. When the Led flashes, it indicates that the injection
function is off as the temperature is not yet high enough (par.
“SEt”).
23 -INJ Led: Indicates the status of steam injection. When the
Led flashes it indicates a pause between automatic injections.
24 -CLOCK Led: Indicates the start-up of a counter
(automatic switching on or cooking time).
25 -ALARM Led: Indicates active (on), non-active (off) or
muted (flashing) alarm status.
26 -AUX Led: Indicates the status of the auxiliary output AUX.
27 -TOP Led: Indicates the status of the output for heating the
TOP of the oven.
28 -FLOOR Led: Indicates the status of the output for heating
the FLOOR of the oven.
29 -PW LIM Led: Indicates that the power limit function is on.
30 -STAND-BY Led: Indicates that the control device is in
STAND-BY mode.
2 -PROGRAMMING
2.1 -RUN/STAND-BY
The unit has an ON/OFF key, which when held down for 2
seconds,
switches the instrument on (and therefore starts
regulation running).
Once the machine is running, if the same key is held down for
two seconds, it will switch off.
Once the system is connected to the power supply, it can
assumetwo different modes:
-O
N (RUN): meaning that the control device activates all the
control functions.
The panel therefore shows all the displays and all the leds to
be active, with the exception of the Stand-by Led (off).
-OFF (STAND-BY): meaning that the control device does not
activate any control function, with the exception of the light
command.
The display is therefore off, with the exception of the Stand-
by
led, which is lit.
If the automatic switch on timer is present, in the OFF status it
is possible to set the time at wh
ich the oven should switch on
and then start the timer.
If the timer is started, in the OFF mode, the time display and
CLOCK led (see switching on timer) on the display will be lit.
In the event of a blackout, the instrument stores the control
device statu
s, in order to revert to the same status once the
energy supply is restored.
2.2 –SELECTING STORED PROGRAMMES
The instrument can store up to 8 different cooking
programmes,
thus making it possible to rapidly recall preset
parameters for different types of cooking.
When the SEL PRG key is pressed, the upper display will
show the programme currently being performed
(“P1”, “P2”
etc.). The UP
and DOWN arrows can be used to select another
one.
After 5 seconds of key inactivity, the display will return to the
normal operating mode and the selected programme will start.
When one enters programming mode, the Set and parameters
shown are those of the current programme.
N.B.: Certain parameters (such as those for calibration, probe
selection, etc.) are common to all
programmes and are
indicated in the parameter table by the caption “com”.
2.3 -
FAST PROGRAMMING OF SET POINTS AND
POWERS
With the instrument switched on, press the P key and then
release,
the SET1 Led will flash and the upper display will
show the TOPtemperature set-point set.
In order to modify the value, use the UP key to increase and
the DOWN key to decrease.
These keys change one digit at a time, but if held down for
more
than one second the value changes rapidly and after two
seconds the speed will
increase further, until the desired value
is reached.
When in the SET1 setting mode, by pressing the P key once
again
and then releasing it, the SET 2 Led will flash and the
lower display will show the FLOOR temperature set-
point set,
which can be modifie
d using the UP and DOWN keys as
described above.
At this point, when the P key is pressed and then released, the
TOP
power bar will flash and can then be modified using the
UP and DOWN keys.
Finally, by pressing and then releasing the P key once again,
the
FLOOR power bar will flash and can then be modified as
described above.

OSAKA OPERATING INSTRUCTIONS –COC 30-Page 3
The set and power setting mode is exited automatically when
no key is pressed for 5 seconds, after which the displays will
revert to showing the values measured by the probes.
2.2.4 –SETTING THE TIME AND DAY
The unit has an internal clock, which must therefore be set to
the correct time and day as described below:
Press the CLOCK key and hold down for 5 seconds, after
which the upper display will show "CL" and the clock display
will show the current time.
By pressing the “UP” and “DOWN” keys, it can therefore be
altered in order to set the correct time.
By pressing the CLOCK key once again, within 5 seconds, the
upper display will show "dy" and the clock display will show
the current day of the week (1=Sunday ... 7=Saturday).
By pressing the "UP" or "DOWN" keys when the day is
displayed, it is possible to modify it in order to set the current
day.
To exit the clock setting mode, do not press any key for 5
seconds, the instrument will automatically return to the normal
display mode.
2.5 –SETTING THE COOKING TIME
The cooking timer can only be programmed and enabled when
the instrument is in the ON status.
In order to programme the time, press and release the CLOCK
key.
The CLOCK led will flash and the clock display will show the
last cooking time set, in an hh.mm form.
The UP and DOWN keys can be used to set the desired time.
Press the START key to start the counter running.
The cooking time count is then indicated by the CLOCK led
lighting up, the flashing of the hh.mm separation led and the
countdown on the clock display that in this mode changes to
show the decreasing count (and no longer the current time).
Once the cooking time has expired, the control device will
activate the buzzer for the time set under the “bt” parameter
(which can be set in secs.).
To mute the buzzer ahead of time, press any key.
In order to deactivate the cooking timer ahead of time, press
the START key and the display will revert to showing the
current time.
The “cEF” parameter can be used to establish whether at the
end of cooking, the control device switches off automatically
(“cEF” = On) or whether it remains switched on (“cEF”=OFF).
2.6 –SETTING THE AUTOMATIC SWITCH ON TIME
The switching on timer can only be programmed and activated
when the control device is in Stand-by.
To programme the time, press and then release the CLOCK
key, the upper display will show “On” and the clock display will
show the last switching on time set.
Use the UP and DOWN keys to set the desired switching on
time.
At this point, by pressing the CLOCK key the upper display will
show “dy”, the clock display will show the day subsequent to
the current one and the Up and DOWN keys can be used to
change it.
By pressing the CLOCK key once again, the upper display will
show “Ct” (Cooking Time) and the clock display “0.00”.
To start the cooking timer running when the oven is switched
on, set the desired cooking time using the UP and DOWN
keys, otherwise, by leaving the cooking timer at 0.00, it can be
started manually only.
Once the desired values have been set, to activate automatic
switching on, press the START key for approximately 1 sec.
The switch on delay time counter will be indicated by the
lighting of the CLOCK led and the flashing of the hh.mm
separation led. At the programmed time, the control device will
switch on automatically.
To deactivate the switching on timer, press the START key for
1second or switch the instrument on ahead of time.
If you wish the oven to switch on and switc
h off automatically,
in this
mode the cooking time must also be programmed once
the “cEF” parameter has been programmed as = on.
2.7 –PARAMETER PROGRAMMING
By pressing the “P” key and holding it down for approximately
5seconds, one accesses the programming menu.
The UP and DOWN keys can be used to scroll the selections:
"OPr" allows access to the operative parameter
menu but can contain all the desired
parameters (see par. 2.3).
"CnF" allows access to the configuration parameter
menu that contains all the instrument’s
parameters and is protected by a password.
Once the desired option has been selected, press the P key to
confirm.
To access the “OPr” menu, select “OPr” and then the P key.
The display will now show the code that identifies the first
group of parameters (“ ] SP
“) and the UP and DOWN keys can
be used to select the group of parameters to be edited.
Once the desired group of parameters has been selected,
press the
P key, the display will show the code that identifies
the first parameter of the group selected.
Once again using the UP and DOWN keys, it is possible to
select
the desired parameter and, by pressing the P key, the
display will
show, alternately, the parameter code and its
setting, which can be altered with the UP or DOWN keys.
On
ce the desired value has been set, press the P key again:
the
new value will be stored and the display will show the code
of the parameter selected.
The UP and DOWN keys can be used to select another
parameter (if present) and modify it as described.
In order to go back to select another group of parameters, hold
down the UP or the DOWN key for approximately 2 seconds,
after
which the display will revert to showing the code of the
group of parameters.
Release the key pressed and use the UP and DOWN keys to
select another group (if present).
To exit the programming mode, do not press any key for
approximately 20 seconds, or hold down the UP or DOWN key
until exiting the programming mode.
In order to access the “CnF”
menu select “CnF” and press the
Pkey. An access password will now be requested.
When this request appears, use the UP and DOWN keys to set
the
number given on the last page of this manual and then
press the “P” key.
If an incorrect password is set, the instrument will return to the
regulation status in which it was previously.
If the password is correct, the display will show the code that
identifies the first group of parameters (“ ] SP “) and the UP and
DOWN keys will be used to select the group of parameters that
one intends to edit.
The procedu
re for programming and exiting programming of
the
“ConF” menu are the same as those described for the
“OPEr” menu.
2.8 –PARAMETER PROGRAMMING LEVELS
The “OPr” menu usually contains the parameters for setting the
Set points and output powers, however, at
this level, it is
possible to
make all the parameters desired appear or
disappear by following the procedure described below:
Access the “CnF” menu and select the parameter that you wish
to make or not make programmable in the “OPr” menu.
Once the parameter has been selected, if the SET1 Led is off it
means that the parameter can only be programmed in the

OSAKA OPERATING INSTRUCTIONS –COC 30-Page 4
“CnF” menu, if, on the other hand, it is lit, the parameter can
also be programmed in the “OPr” menu.
Press the ON/OFF key to modify the visibility of the parameter:
the SET1 led will change status, thus indicating the
parameter’s level of accessibility (on = “OPr” and “CnF”; off =
“CnF” menu only).
3 -INFORMATION ON INSTALLATION AND USE
3.1 -PERMITTED USE
The instrument has been projected and
manufactured as a measuring and control
device to be used according to EN61010-1
The use of the instrument for applications not
expressly permitted by the above mentioned rule must adopt
all the necessary protective measures.
The instrument CANNOT be used in dangerous environments
(flammable or explosive) without adequate protection.
The installer must ensure that EMC rules are respected, also
after the instrument installation, if necessary using proper
filters.
Whenever a failure or a malfunction of the device may cause
dangerous situations for persons, thing or animals, please
remember that the plant has to be equipped with additional
devices which will guarantee safety.
3.3.2 –MECHANICAL MOUNTING
The instrument, in case DIN 72 x 144 mm, is designed for
flush-in panel mounting.
Make a hole 139 x 68 mm mm and insert the instrument, fixing
it with the provided special brackets.
We recommend that the gasket is mounted in order to obtain
the front protection degree as declared. Avoid placing the
instrument in environments with very high humidity levels or
dirt that may create condensation or introduction of conductive
substances into the instrument.
Ensure adequate ventilation to the instrument and avoid
installation in containers that house devices which may
overheat or which may cause the instrument to function at a
higher temperature than the one permitted and declared.
Connect the instrument as far away as possible from sources
of electromagnetic disturbances such as motors, power relays,
relays, solenoid valves, etc.
3.3 -ELECTRICAL CONNECTION
Carry out the electrical wiring by connecting only one wire to
each terminal, according to the following diagram, checking
that the power supply is the same as that indicated on the
instrument and that the load current absorption is no higher
than the maximum electricity current permitted.
As the instrument is built-in equipment with permanent
connection inside housing, it is not equipped with either
switches or internal devices to protect against overload of
current: the installation will include a two-phase circuit-breaker,
placed as near as possible to the instrument, and located in a
position that can easily be reached by the user and marked as
instrument disconnecting device which interrupts the power
supply to the equipment.
It is also recommended that all the electrical circuits connected
to the instrument must be protect properly, using devices (ex.
fuses) proportionate to the circulating currents.
It is strongly recommended that cables with proper insulation,
according to the working voltages and temperatures, be used.
Furthermore, the input cable of the probe has to be kept
separate from line voltage wiring. If the input cable of the probe
is screened, it has to be connected to the ground with only one
side.
We recommend that a check should be made that the
parameters are those desired and that the application functions
correctly before connecting the outputs to the actuators so as
to avoid
malfunctioning that may cause irregularities in the
plant that could cause damage to people, things or animals.
OSAKA. and its legal representatives do not assume
any
responsibility for any damage to people, things or animals
deriving from violation, wrong or improper use or in any
case not in compliance with the instrument’s features.
3.4 -ELECTRICAL WIRING DIAGRAM
4 –FUNCTIONS
4 -FUNCTIONS
4.1 -MEASURING AND VISUALIZATION
All the measurement parameters are contained in the “ ]
In”
group.
The instrument has a maximum of 4 temperature probe inputs:
1 (t) –TOP probe
2 (F) –FLOOR probe
3 (S) –STEAM probe (Optional)
4 (A) –Auxiliary AUX probe (AUX) (Optional)
If the model in question has inputs for thermocouples by
means of the “SEn”
parameter, it is possible to select the type
of probe to use, which can be for thermocou
ples J (J) or K
(CrA).
The unit of temperature measurement is established by the
“uni” parameter and can be set to either °C or °F.
It should be noted that when this parameter is changed, it only
changes the display, not the Set Point and the parameters,
which
must be modified manually (for example if the Set Point
was 50°C
and the unit of measurement is changed, the set
point will change to 50°F).
The “OSt”, “OSF”, “OSS”, “OSA”
parameters can be used to
set a positive or negative offset that is added to th
e value read
by the
relative probe before displaying, to which the regulation
function is
also connected. The displays normally show the
temperatures
measured by the other probes (if present and
enabled with the “EFP”, “ESP”, “EAP”
parameters) by
pressing and releasing the SEL IN (DOWN) key.
The upper display will alternately show “SP”
and the
temperature
measured by the steamer probe, by pressing the
SEL IN key again within 5 seconds, the display will show
“AP”
and the temperature measured by the AUX probe.
After 5 seconds of inactivity, the display will return to its normal
function.

OSAKA OPERATING INSTRUCTIONS –COC 30-Page 5
4.2 –TEMPERATURE AND POWER REGULATOR
The temperature regulator is of the ON/OFF kind and activates
the power regulator according to the Set Point and the relative
differential.
With the COC 30, it is possible to have split temperature
control for the TOP and FLOOR, or alternatively a single
control for the entire oven.
If you wish split control, the TOP and FLOOR probes must be
connected and the enable floor probe “EFP” = ON parameter
set, whereas for single probe temperature control, only the
TOP probe needs to be connected and the “EFP” = OFF
parameter set. All regulation parameters are contained in the “
] rG” group.
SINGLE PROBE CONTROL
The regulator with one probe operates in heating mode on both
the HEAT TOP and HEAT FLOOR outputs, according to the
SET1 “SP1”, of the differential “HS1” and the “OP1, OP2”,
“tCP” parameters that will be described below.
The regulator’s unusual feature consists in the fact that it can
control the power on the two outputs following a time cycle that
can be set to the “tCP” parameter.
The control powers for the top and floor are displayed on two
bars and can be set under the “OP1” and “OP2” parameters
(or as described in paragraph 2.3) with a range from 0 to 100
% and 10% definition.
The instrument also has a “PSP” parameter that can be used
to manage the setting of the two powers as:
=0 –independent
=1 -dependent so that an increase in one causes an automatic
decrease in the other, so that if the top and floor powers are
equal, the sum of the powers is always 50% of the whole.
=2 –dependent so that a decrease in one power causes the
automatic switch to 100% of the other, so that, if the top and
floor powers are the same, the sum of the powers is always
between 50 and 100% of the total.
Therefore, if the temperature regulator foresees the enabling of
the outputs, the power limiter will be off and the power set for
the outputs is 100%, both the HEAT TOP and HEAT FLOOR
outputs will always be lit.
If, on the other hand, in the same conditions, powers different
from 100% are set starting from the cycle time count:
The TOP output remains on for the time : [tCP x OP1/100] and
off for the time : [tCP -(tCP x OP1/100)]
The FLOOR output remains off for the time : [tCP -(tCP x
OP2/100)] and on for the time: [tCP x OP2/100]
For example, with the parameters set in this way:
“tCP” = 10 sec. “OP1” = 90 % “OP2” = 50 % t
he following function is obtained:
HEAT TOP on = 10 x 90/100 = 9 sec.
HEAT TOP off =10 -(10 x 90/100) = 1 sec.
HEAT FLOOR on = 10 x 50/100 = 5 sec.
HEAT FLOOR off = 10 -(10 x 50/100) = 5 sec.
Should the power limiter be activated, by pressing the PW. LIM
key,
the relative led will light and the controller will ensure that
the outputs are never simultaneously on (therefore if the two
resistances are equal, the maximum power absorbed is 50%).
This occurs in any case when, without the limiter being on, the
sum of the two powers is less than 100%.
Therefore, the function with the power li
miter on, starting from
the count of the cycle time is as follows:
1) the TOP output remains on for the time: [tCP/2 x OP1/100]
2) Both outputs remain off for the time: [(tCP/2 -
(tCP /2 x
OP1/100)) +(tCP/2 -(tCP/2 x OP2/100))]
3) the FLOOR output switches on for the time:
[tCP/2 x
OP2/100] and so on.
For example, with the parameters thus set:
“tCP” = 10 sec.
“OP1” = 90 % “OP2” = 50 %
HEAT TOP on = 10/2 x 90/100 = 4.5 sec.
HEAT TOP and FLOOR off
= 10/2 -(10/2 x 90/100) + 10/2 -(10/2 x 50/100) = 3 sec.
HEAT FLOOR on = 10/2 x 50/100 = 2.5 sec.
It goes without say that when the Set temperature is reached
both outputs switch off.
2 PROBE CONTROL
With two probes the regulator operates in heat mode on both
the HEAT TOP and HEAT FLOOR outputs, according to SET
1
“SP1” and SET2 “SP2”, differentials “HS1” and “HS2”,
and
the “OP1, OP2”, “tCP” parameters.
As for single probe control, it is possible to control the power
on the
two (top and floor) resistance control outputs according
to the cycletime “tCP”.
Operation is identical to single-
probe control, with the
difference that
the power regulator, and consequentially the
two outputs are deactivated by both Sets rather than just one.
Therefore, if both the TOP and FLOOR temperature regulators
foresee the activation o
f the outputs, the power limiter is off
and the
power set for the outputs is 100%, both outputs are
always on.
If, in the same conditions, powers differing from 100% are set
starting from the cycle time count, the outputs are activated as
seen previously for single-probe control.
Should the power limiter be activated, the controller ensures
that the
outputs are never switched on simultaneously, as seen
previously.
On reaching the temperature of both regulators, obviously both
outputs are switched off.
On th
e other hand, should one of the two regulators need its
output
to be switched off, the power limiter is temporarily
switched off and
therefore access to the other regulator can
always remain switched
on (obviously if the power set for it is
100%).
Limiter function is automatically restored when both regulator
outputs must be switched on.
4.3 –TEMPERATURE ALARMS
The instrument is fitted with an over-
temperature alarm
function that
indicates oven temperature abnormalities, by
means of an internal buzzer, a
luminous signal (ALARM led)
and, optionally, an output
(AUX if present and suitably
programmed).
All temperature alarm parameters are contained in the “ ]
AL”
group.
Temperature alarms can be set as absolutes or relative
to the regulation set.
The alarm function parameters are:
“A1t” –
Probe 1 (TOP) alarm function mode as absolute or
relative
“A1L” -Set probe 1 (TOP) minimum alarm
“A1H” –Set probe 1 (TOP) maximum alarm
“HA1” -Probe 1 (TOP) alarms differential

OSAKA OPERATING INSTRUCTIONS –COC 30-Page 6
“A1d” –Probe 1 (TOP) alarms delay
“A2t” –Probe 2 (FLOOR) alarm function mode as absolute or
relative
“A2L” –Set probe 2 (FLOOR) minimum alarm
“A2H” -Set probe 2 (FLOOR) maximum alarm
“HA2” –Probe 2 (FLOOR) alarms differential
“A2d” –Probe 2 (FLOOR) alarms delay
The alarms are always operative, if the maximum alarm is not
desired, simply set it to 999 and if the minimum alarm is not
desired set it to –99.
There is also an enabling delay when the instrument is
switched on, which can be set under the “POd” parameter and
is only operative when the machine is switched on and the
temperature is in alarm conditions and is cancelled when the
temperature returns to non-alarm conditions.
Alarm activation takes place when disabling expires in the
following conditions, according to the type of alarm
programmed:
(NB: in the following examples, the number of the alarm is
generally indicated with n)
“Ant” = Ab –ABSOLUTE ALARMS: The alarm is activated
when the value measured drops below the alarm threshold set
under parameter "AnL" or rises above the alarm threshold set
under the "AnH" parameter.
“Ant” = dE –RELATIVE ALARM : the alarm is activated when
the value measured drops below the [SPn -AnL] value, or
when it rises above the [SPn + AnH] value.
When an alarm is active, the ALARM led lights, a buzzer is
activated, the AUX output is activated if configured as an alarm
and the displays will show the alarm code alternated with the
temperate measured (the upper display for the alarms relating
to the TOP probe and the lower display for the alarms relating
to the FLOOR probe.
When activated, the buzzer can be muted by pressing any key.
Even when the buzzer is muted, the instrument indicates the
alarm with the flashing of the AL led and the display shows:
“A1L” -in the case of a probe 1 (TOP) minimum alarm
“A1H” -in the case of a probe 1 (TOP) maximum alarm
“A2L” –in the case of a probe 2 (FLOOR) minimum alarm
“A2H” -in the case of a probe 2 (FLOOR) maximum alarm.
In order to provide an external tone command (should the
internal one be weak), it is possible to use the AUX output as a
mutable alarm output (see AUX output operation).
Alarm operation is also influenced by the alarm differentials
(par. “HA1” and “HA2”), which operate as follows.
In the case of a minimum alarm, the alarm will activate when
the temperature value drops below the “AnL” alarm threshold
value and will deactivate when it rises above the [”AnL” +
"HAn"] value; in the case of a maximum alarm, the alarm will
activate when the temperature value rises above the “AnH”
alarm threshold and will deactivate when it drops below the
[”AnH” -"HAn"] value.
4.4 –OVEN LIGHT CONTROL
The LIGHT key can be used to activate/deactivate the LIGHT
output, the activation of the output is therefore indicated by the
LIGHT led.
When the controller is switched off, the output is in any case
switched off, but in standby mode the output can be switched
on or
off. In normal switching on conditions or after a power
cut, the output returns to the state in which it was left.
4.5 –STEAMER AND STEAM INJECTION CONTROL
All the steam control parameters are contained in the “ ]
St”
group.
When the instrument is in the ON status, it is possible to
activate/deactivate the steamer regulator using the STEAM
key. Activation is therefore indicated by the STEAM led.
Switchi
ng off of the regulator prevents the steam injection
control from functioning.
Output function can differ, according to the presence of the
STEAM temperature probe.
If the instrument is not fitted with a probe for the steamer (or
the probe is disabled usin
g the “ESP” = OFF parameter), the
STEAM G
output can be enabled/disabled directly using the
STEAM key.
If the instrument is fitted with a steamer probe and the steamer
probe is enabled (“ESP” = ON), the STEAM key can be used to
activate/deactivate the steamer regulator.
Switching on the output is therefore subordinate to the
ON/OFF
regulator, which acts in heat mode according to the
temperature
measured by the steamer probe, the steamer
temperature set “SPS” and the relative differential “HSS”.
If the probe is used and the measurement is lower than that
programmed under the “SEt”
parameter, it will prevent the
function of the steam injection control.
If the controller is switched off, when it is switched back on, the
steamer control function reverts to the s
tatus in which it was
left.
In order to indicate all the possible conditions, the STEAM led
will operate as follows:
-OFF: steamer deactivated
-
ON: steamer function activated and (when the steamer probe
is present) temperature above “Set” and therefore i
njection
possible.
-
Flashing: steamer function on, but temperature below “Set”
and
therefore injection off (only when the steamer probe is
present).
As mentioned previously, steam injection can only be activated
if the steamer control is activated and, if
the instrument is fitted
with the
steamer probe, the measurement of the latter is higher
than that set under the “SEt” par.
Once these conditions have been satisfied, the STEAM INJ.
Output
is therefore activated manually by pressing the INJ. key
and remai
ns active, even when the key is released, for the time
set under the “Slt” par.

OSAKA OPERATING INSTRUCTIONS –COC 30-Page 7
The SIF parameter can be used to establish whether, when the
“Slt” time expires, the injection output switches off even if the
key is still pressed down (SIF = OFF, pulse function) and
therefore one must release the key and then press it in order to
obtain a new injection, or if the output remains in any case
activated until the key is released (SIF = On, permanent
function).
The injection command is also subordinate to a block time
between two subsequent steam injections so that the steamer
can return toits temperature.
When the injection output is switched off, the time counter set
under the “Sld” parameter starts, during which injection
commands are not performed.
The steam injection can also be obtained automatically using
the ”SIc”, “SIi” and “SIt” parameters.
The “SIi” > 0 and “SIt” >0 parameters enable automatic
injection.
The “SIc” = 0 parameter establishes the continuous automatic
cycle whereas > 0 establishes the automatic injection cycle
time.
One can therefore obtain:
1) Manual steam injection once only when one presses the INJ
key (“SIi” = 0, “Slc”=0).
2) Continuous automatic steam injection with injection time =
“SIt” and pause = “SIi” starting from when the key is pressed.
The injection cycle only terminates when one presses the INJ
key or when the steamer or the instrument itself is switched off.
3) A cycle of automatic steam injections for the time “SIc” with
injection time = “SIt” and pause = “SIi”, starting from when the
key is pressed.
At the end of “SIc” time (or if the INJ. key is pressed again
before the end of the time or if the steamer or the instrument is
switched off) the cycle of injections terminates.
In order to indicate all the possible conditions, the STEAM INJ
led operates as follows:
-OFF : injection not active
-ON : injection in progress
-Flashing: automatic injection in progress in the pause status
(“SIi” time)
4.6 –EXTRACTOR CONTROL
When the instrument is in the ON status, the EXTR. Key can
be used to enable/disable the EXTR. output.
Output activation is therefore indicated by the EXTR. led.
The extractor is normally intended as the oven’s suction fan,
however the user could command any other function (revolving
plate, second light, etc.).
If the controller is switched off (or in the event of a blackout),
when it is switched back on again, the output reverts to the
status in which it was left.
All the extractor parameters are contained in the “ ] ES” group.
The “ESd” parameter can be used to decide whether the
output is commanded by means of the key (=OFF) only or
whether the output must be also be switched off when steam
injection occurs, in order
to prevent the steam injected being extracted (=On).
In this case, the output (if on) switches off when steam
injection starts and remains switched off for the entire duration
of injection and even after it finishes for a certain time (in sec.)
that can be set under the “Edt” parameter.
Moreover, using the “EAS”
= On parameter, it is possible for
the
extractor output to be activated (if it is not already)
automatically,
when cooking is terminated, otherwise it will only
be commanded manually (=OFF)
In order to facilitate the command of the single extractor on an
oven where there are a number or appliances, a relay switch-
type
operation mode is provided, by which it is possible to
command a
single extractor from any one of the instruments
installed.
In order to obtain this operation, the “Ec
n” parameter can be
used to establish the operation of the EXT
R output in relation
to the key as bistable (=OFF) or as monostable (= On).
Therefore, if one wishes to command a single extractor from
more than one instrument, it is possible to do so:
-
by connecting the relay output EXTR of the first instrument so
that it commands the extractor,
-
by programming the first instrument with “ECn”=OFF and all
the others =On,
-
by connecting the EXTR relay outputs of all the others in
parallel
and therefore to a digital input of the first one, which
must have programmed the ope
ration = 2 (see digital input
operation).
4.7 –
AUXILIARY OUTPUT AND AUXILIARY REGULATOR
(AUX)
The instrument can also be fitted with a settable auxiliary
output (AUX).
All the AUX output control parameters are contained in the “
]
AO” group.
The “AOF” parameter can therefore be used to set the output
function mode as follows:
= 0 –no function
= 1 -
output ON: the output switches on/off in correspondence
with the switching on/off of the instrument.
= 2 –Auxiliary temperature regulator: the use of the AU
X probe
is essential for this function.
The regulator operates according to the measurement of the
auxiliary probe, the auxiliary regulator set “SPA”, the relative
differential “HAS” and function mode “ArF”
(Heat = H;
Cool=C).
The auxiliary regulator ca
n be used for many applications such
as temperature controls in other areas of the oven or inside the
product.
= 3 –
End of cooking signal: the output is enabled when
cooking
ends and, if desired, also ahead of the time that can
be set under the “AOt” para
meter. If the parameter is = 0 it
obviously activates exactly at the end of cooking.
The function can be used to command an external end of
cooking
signal or to command various devices, such as, for
example, the
actuators that open the oven’s unloading
hatches.
Once the output has been activated, it can be deactivated by
pressing the AUX (DOWN) key.
= 4 –Activation using the AUX(DOWN) key or digital input: the
output is activated by pressing the DOWN/AUX key (or by
activating a suitably programmed digital input).

OSAKA OPERATING INSTRUCTIONS –COC 30-Page 8
These commands have a bistable function, which means that
at the first command the AUX output is activated whereas on
the second it is deactivated.
In this mode, the AUX output can also be switched off
automatically after a certain time that can be set under the “
AOt” parameter.
With "AOt" = 0 the output is only activated and deactivated
manually, using the DOWN/AUX key or the digital input.
= 5 –mutable alarm: the AUX output is activated together with
the buzzer when alarm conditions exist and, like the buzzer, it
can be muted by pressing any key.
= 6 –non-mutable alarm: the AUX output is activated when
alarm conditions exist and remains activated for as long as
such conditions persist.
4.8 –DIGITAL INPUTS
The instrument has three settable digital inputs for free voltage
contacts.
All the digital input setting parameters are contained in the “ ]
In”group.
The function logic of the digital inputs is established by the
parameters “i1L”, “i2L”, “i3L” , which can be programmed as
follows:
= On –contact normally open: the programmed function occurs
on the closure of the contact connected to the input.
= OFF –contact normally closed: the programmed function
occurs on the opening of the contact connected to the digital
input.
The action of the digital inputs can be delayed using the
following parameters:
“i1d”, “i2d”, “i3d” , which can be programmed in seconds.
With regards to operation, the digital input acts according to
the "i1F", “i2F”, and “i3F” parameters, which can be
programmed as:
= 0 –not operative
= 1 –external alarm signal: on input intervention, the alarm is
activated and the upper display alternately shows "ALn"
(where n is the number of the digital input) and the temperature
measured.
= 2 –Remote control of auxiliary output AUX: the digital input
is used to command the auxiliary output AUX as described in
operation mode "AOF" = 4 of the auxiliary output
= 3 –Steam injection remote control: the digital input operates
as the instrument’s INJ key.
= 4 –Steam injection block: the intervention of the digital input
causes steam injection blockage. The function can be useful if
the instrument does not have the steamer probe and one
wishes to block injection by means of a steamer thermostat.
= 5 –Pulse command for switching on the extractor output for
multiple command. This can be used to facilitate the command
of the single extractor when more than one appliance is fitted
to an oven. If one desires to command a single extractor from
a number of instruments, it is possible to do so by
programming the former with “ECn”=OFF and all the others
with “ECn” =On, connecting the EXTR relay output of the
former in such a way that it commands the extractor,
connecting the EXTR relay outputs of all the others in parallel
and therefore at the digital input of the former, which will have
suitably programmed the digital input with this operation mode.
4.9 -RS 485 SERIAL INTERFACE
The instrument can be equipped with a RS 485 serial
communication interface, by means of which it is possible to
connect the regulator with a net to which other instruments
(regulators of PLC) are connected, all depending typically on a
personal computer used as plant supervisor. Using a personal
computer it is possible to acquire all the function information
and to program all the instrument’s configuration parameters.
The software protocol adopted for COC is a MODBUS RTU
type, widely used in several PLC and supervision programs
available on the market (COC
series protocol manual is
available on request).
The interface circuit allow
s the connection of up to 32
instruments on the same line.
To maintain the line in rest conditions a 120 Ohm resistance
(Rt) must be connected to the end of the line.
The instrument is equipped with two terminals called A and B
which have to be connected w
ith all the namesake terminals of
the net.
For the wiring operation they must be interlaced with a double
cable
(telephonic type) and all the GND terminals must be
connected to the ground.
Nevertheless, particularly when the net results very long
or
noise
d and being present potential differences between the
GND
terminals, it is advisable to adopt a screened cable wired
as in the drawing.
i
f the instrument is equipped with a serial interface, the
parameters to be programmed are the following, all present
in
the parameters group “ ] SE” :
"Add" : Address of the station. Set a different number for each
station, from 1 to 255.
"bau" : Transmission speed (baud-
rate), programmable from
2400
to 38400 baud. 1 =2400 baud, 2 =4800 baud, 3 =9600
baud, 4= 19200 bau
d , 5 =38400 baud. All the stations have to
have the same transmission speed.
"PAC"
: Programming access. If programmed as "LoC" this
means
that the instrument is only programmable from the
keyboard, if
programmed as "Lor" it is programmable both from
the keyboards and serial line.
If an attempt is made to enter the programming from the
keyboard
whilst a communication through the serial port is in
progress the instrument will visualise "bSy"
to indicate the
busy state.
5 –PROGRAMMABLE PARÁMETER S
5.1 -PARAMETERS TABLE
“ ] SP” Group (Set Point parameters)
Par. Description Range Def.
1SP1 TOP Set Point SPL ÷ SPH 0
2SP2 FLOOR Set Point SPL ÷ SPH 0
3SPL
(com)
Minimum Set Point -99 ÷ SPH 0
4SPH
(com)
Maximum Set Point SPL ÷ 999 999
“ ] rG” Group (temperature regulation and power control
parameters)
Par. Description Range Def.
5OP1 TOP power 0 ÷ 100 % 50
6OP2 FLOOR power 0 ÷ 100 % 50
7tCP Power control Cycletime 1 ÷ 999 seg. 30
8PSP Power setting mode 1 -2 –3 1
9HS1 Regulator differential 1
(TOP) 1 ÷ 999 2

OSAKA OPERATING INSTRUCTIONS –COC 30-Page 9
10 HS2 Regulator differential 2
(FLOOR) 1 ÷ 999 2
“ ] CL” Group (clock parameters)
Par. Description Range Def.
11 ct Cooking time 0.01÷ 23.59
hrs. -min. 1.00
12 On Automatic switch on time 0.00÷ 23.59
hrs. -min. 0.00
13 bt Buzzer activation time 1 ÷ 999 seg. 30
14 cEF Automatic switch off at
end of cooking On –OFF OFF
“ ] In” Group (measurement inputs parameters)
Par. Description Range Def.
15 EFP
(com)
Floor probe presence
(FLOOR)On –OFF On
16 ESP
(com)
OFF Steamer probe
presence (STEAM On –OFF On
17 EAP
(com)
Auxiliary probe
presence
(AUX) On –OFF On
18 OSt
(com)
Top probe calibration
(TOP) -99 ÷ 999 0
19 OSF
(com)
Floor probe calibration
(FLOOR) -99 ÷ 999 0
20 OSS
(com)
Steam Probe
calibration
(STEAM)
)
-99 ÷ 999 0
21 OSA
(com)
Auxiliary probe
calibration (AUX) -99 ÷ 999 0
22 Uni
(com)
Unit of measurement °C / °F °C
23 SEn
(com)
Type of probe in input J / CrA J
24 i1F
(com)
Function digital input 1 0-1-2-3-4-50
25 i1L
(com)
Logic function digital
input 1On –OFF On
26 i1d
(com)
Delay digital input 10 ÷ 999 seg. 0
27 i2F
(com)
Function digital input 2 0-1-2-3-4-50
28 i2L
(com)
Logic function digital
input 2On –OFF On
29 i2d
(com)
Delay digital input 2 0 ÷ 999 seg. 0
30 i3F
(com)
Function digital input 3 0-1-2-3-4-50
31 i3L
(com)
Logic function digital
input 3 On -OFF On
32 i3d
(com)
Delay digital input 3 0 ÷ 999 seg. 0
Group “ ] AL” (alarm parameters)
Par. Description Range Def.
33 A1t
(com)
Alarm type AL1 Ab / dE Ab
34 A1L
(com)
Lower threshold alarm -99 ÷ 999 -99
35 A1H
(com)
Upper threshold alarm -99 ÷ 999 999
36 HA1
(com)
Hysteresis alarm 1 1 ÷ 999 1
37 A1d
(com)
Delay activation of
alarm
1
0 ÷ 999
seg. 0
38 A2t
(com)
Alarm type AL2 Ab / dE Ab
39 A2L
(com)
Lower threshold alarm 2-99 ÷ 999 -99
40 A2H
(com)
Upper threshold alarm 2-99 ÷ 999 999
41 HA2
(com)
Hysteresis alarm 2 1 ÷ 999 1
42 A2d
(com)
Delay activation of alarm
20 ÷ 999 sec. 0
43 Pod
(com)
Disabling alarms on
switching on 0 ÷ 999 min. 0
“ ] St” Group (steam control parameters)
Par. Description Range Def.
44 SPS Steamer regulator Set
Point -99 ÷ 999 130
45 HSS
(com)
Steamer regulador
hysteresis 1 ÷ 999 2
46 SEt
(com)
Steam injection block
temperature -99 ÷ 999 110
47 SIF
(com)
Permanent steam
injection command
function
On -OFF OFF
48 SIt Steam injection duration 1 ÷ 999
sec. 10
49 Sid
(com)
Time of block of steam
injection between two
subsequent steam
injections.
1 ÷ 999
seg. 30
50 SIi Interval between
automatic steam
injections
0 ÷ 999
min. 0
51 SIc Duration of automatic
steam injection cycles 0 ÷ 999 min. 0
] ES” Group (extractor control parameters)
Par. Description RangeDef.
52 ESd
Disabling of extractor
during steam injection On -OFF OFF
53 Edt Extractor disabling time
after end of steam
injection
1 ÷ 999
seg. 1
54 EAS Automatic switching on
of
extractor at the end
of
cooking
On -OFF OFF
55 Ecn
(com)
Function of the
monostable extractor
output command
On -OFF OFF
“ ] AO” Group (AUX output parameters)
Par. Description RangeDef.
56 AOF
(com)
AUX output function 0-1-2-3-4-5-60
57 AOt AUX output time 0 ÷ 999
min. 0
58 Auxiliary regulator Set
Point -99 ÷ 999 0
59 HSA
(com)
Auxiliary regulator
differential 1 ÷ 999 2
60 ArF
(com)
Auxiliary regulator
function mode H -C H
“ ] SE” Group (serial communication parameters)
Par. Description RangeDef.
61 Add
(com)
Address of the station
for
serial communication 1 … 255 1
62 bau
(com)
Serial port baud rate bau 1-2-3-4-53
63 PAC
(com)
Programming access
through serial port rs485 LoC / Lor Lor

OSAKA OPERATING INSTRUCTIONS –COC 30-Page 10
5.2 -PARAMETERS DESCRIPTION
“ ] SP” GROUP (SET POINT PARAMETERS):
For setting the regulation set and Set function modes.
SP1 -SET POINT TOP: Top regulation Set Point value
SP2 -SET POINT 2: Floor regulation Set Point Value
SPL -SET POINT MINIMUM: Minimum value that can be set
as Set Point.
SPH -SET POINT MAXIMUM : Maximum value that can be
set as Set Point.
“ ] rG” GROUP (REGULATION PARAMETERS): contains all
the regulation function and output power control
parameters .
OP1 -POWER TOP: output power value for TOP heat.
OP2 -POWER FLOOR: output power value for FLOOR heat.
tCP –POWER CONTROL CYCLE TIME: cycle time for
calculating output powers expressed in sec.
PSP -POWER SETTING MODE: allows the management of
the two powers as:
=0 -independent
=1 –dependent in such a way that an increase in one causes
an automatic reduction in the other so that, if the TOP and
FLOOR powers are identical, the sum of the powers will
always be 50% of the total.
=2 –dependent so that the decrease in one power causes the
automatic switch to 100% of the other, so that, if the top and
floorpowers are the same, the sum of the powers is always
between 50 and 100% of the total.
HS1 -REGULATOR 1 HYSTERESIS (TOP): Semiband
relating to the TOP Set Point that establishes the regulation
activation and deactivation values.
HS2 –REGULATOR 2 HYSTERESIS (FLOOR): Semiband
relating
to the FLOOR set point that establishes the regulation
activation and deactivation values.
“ ] In” Group (INPUTS PARAMETERS): these make it
possible to establish the characteristics of the
measurements and function modes of the digital inputs.
EFP –FLOOR PROBE PRESENCE: Makes it possible to
enable (ON) or disable (OFF) the floor probe if it is not used. If
the probe is disabled, regulation operates on both the HEAT
TOP and HEAT FLOOR outputs, on the basis of the
measurement and sets relative to the TOP only.
ESP –STEAM PROBE PRESENCE: makes it possible to
enable (ON) or disable (OFF) the steam probe if it is not used.
If the probe is disabled, the STEAM output obviously cannot be
thermostated and the steam injection block function is
deactivated according to the steamer temperature.
EAP –AUX PROBE PRESENCE: makes it possible to enable
(ON) or disable (OFF) the auxiliary probe if it is not used. If the
probe is disabled, the auxiliary regulator function cannot be
used.
OSt –TOP PROBE CALIBRATION: Positive or negative offset
that is added to the value read on the TOP probe.
OSF –FLOOR PROBE CALIBRATION: Positive or negative
offset that is added to the value read on the floor probe.
OSS –STEAM PROBE CALIBRATION: Positive or negative
offset that is added to the value read on the steamer probe.
OSA –AUX PROBE CALIBRATION: Positive or negative
offset that is added to the value read on the auxiliary probe.
Uni –UNIT OF MEASUREMENT OF TEMPERATURE:
establishes the display of temperatures in centigrade (°C) or
Fahrenheit (°F.
SEn –INPUT PROBE: If the instrument provides the input for
thermocouples, this makes it possible to select the type of
input probe as type J (J) or type K (CrA).
i1F –DIGITAL INPUT 1 FUNCTION: establishes which
function digital input 1 must perform.
0 = No function (not operative)
= 1 –External alarm signal: on input intervention, the alarm is
activated and the upper display
alternately shows "AL1" and
the temperature measured.
= 2 –
Auxiliary output (AUX) remote control: the digital input is
used
for the command of the auxiliary output AUX as
described in the
"AOF" = 4 operating mode of the auxiliary
output.
= 3 –steam injec
tion remote control: the digital input operates
as the instrument’s INJ key.
= 4 –steam injection block: digital input intervention causes the
blockage of the steam injection. The function can be useful if
the instrument does not have a probe for the stea
mer and one
desires to block injection through a steamer thermostat.
= 5 –Pulse command for switching on the extractor output for
multiple command. This can be used to facilitate the command
of
the single extractor when there is more than one appliance
on an
oven. If one desires to command a single extractor from
more than
one instrument, it is possible to do so by
programming the first one
with “ECn”=OFF and all the others
with “ECn” =On, by connecting
the EXTR relay output of the first instrument in order that it
commands the extractor, by connecting the EXTR relay
outputs of
all the others in parallel and therefore to the digital
input of the first,
which will suitably programme the digital input
with this function mode.
i1L –DIGITAL INPUT 1 FUNCTION LO
GIC: establishes
whether
the digital input 1 causes the activation of the
programme function on its closure (on) or opening (oF).
i1d –
DELAY DIGITAL INPUT 1: delay of activation of the
function performed by digital input 1, expressed in seconds.
i2F –DIG
ITAL INPUT 2 FUNCTION: same as “i1F” but refers
to digital input 2.
i2L –DIGITAL INPUT 2 FUNCTION LOGIC: same as “i1L” but
refers to digital input 2.
i2d –
DELAY DIGITAL INPUT 2: same as “i1d” but referred to
digital input 2.
i3F –DIGITAL INPUT 3 FUNCTIO
N: same as “i1F” but refers
to digital input 3.
i3L –DIGITAL INPUT 3 FUNCTION LOGIC: same as “i1L” but
refers to digital input 3.
i3d –
DIGITAL INPUT 3 DELAY: same as “i1d” but refers to
digital input 3.
“ ]
AL” GROUP (TEMPERATURE ALARMS PARAMETERS):
makeit possible to set temperature alarm operation.
A1t –
TYPE 1 ALARM (TOP) : makes it possible to establish
the
type of alarm relative to top temperature by means of two
possible selections:
= Ab –
ABSOLUTE ALARM : the alarm is activated when the
top tempe
rature value drops below the alarm threshold set in
the “A1L”
parameter or rises above the alarm threshold set in
the "A1H" parameter.
= dE –
RELATIVE ALARM: The alarm is activated when the
top temperature threshold drops below the value [SP1 -
A1L]
or whenthe process value rises above the value [SP1 + A1H]
A1L –
LOWER ALARM 1 THRESHOLD (TOP) : Top
temperature alarm intervention threshold as minimum alarm.
A1H –
UPPER ALARM 1 THRESHOLD (TOP) : Top
temperature alarm intervention threshold as maximum alarm.
HA1 –ALARM 1 HYSTERESIS (TOP): Asymmetric Semiband
relative to the “A1L” and “A1H” alarm thresholds that establish
the top temperature alarm deactivation value.
A1d –
ALARM 1 ACTIVATION DELAY (TOP): makes it
possible to establish a delay in the activation
of the top
temperature alarm (in sec.).
A2t –
TYPE 2 ALARM (FLOOR) : same as “A1t” but referred to
the floor temperature alarm.
A2L –
LOWER ALARM 2 THRESHOLD (FLOOR): same as
“A1L” but referred to the floor temperature alarm.
A2H –UPPER ALARM 2 THRESHOLD
(FLOOR): same as
“A1H” but referred to the floor temperature alarm.