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EVCO EV9303J9 User Manual

Ev9303

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Evco S.p.A. • Code 1049303E00

EV9303

Thermostat-digital timer with 3 outputs for electric ovens, with cooking timer function

version 3.00

E ENGLISH

1

IMPORTANT

1.1

Important

Read these instructions carefully before installation and use and follow
all warnings regarding installation and for the electric connection.
Keep these instructions with the instrument for future reference.

The instrument must be disposed of in compliance with
local Standards relative to the collection of electrical and
electronic appliances.

1.2

Dimensions and installation

Panel with supplied brackets with screws; dimensions in mm (in).

DIMENS.

MINIMUM

TYPICAL

MAXIMUM

A

92.0 (3.622)

92.0 (3.622)

92.8 (3.653)

B

92.0 (3.622)

92.0 (3.622)

92.8 (3.653)

Installation recommendations:
• the thickness of the panel must not exceed 4.0 mm (0.157 in)
• position the brackets as indicated in the drawing in this paragraph,

moderate the coupling torque

• make sure that the working conditions (temperature of use, humidity,

etc.) lie within the limits indicated in the technical data

• do not install the instrument in proximity of heat sources (resistances,

hot air pipes, etc.), appliances with strong magnets (large diffusers,
etc.), places subject to direct sunlight, rain, humidity, excessive dust,
mechanical vibrations or jerks

• in compliance with Safety Standards, protection against any contact

with electrical parts must be assured via correct installation of the
instrument. All parts that ensure protection must be fixed in a way that
they cannot be removed without the aid of a tool.

1.3

Electric connection

With reference to the wiring diagram, the serial port is the communi-
cation port with the supervising system (through a serial interface, via
TTL, with MODBUS communication protocol) or with the program-
ming key; the port must not be used for two purposes at the same time.

Recommendations for the electric connection:
• do not operate on the terminal boards using electric or pneumatic

screwdrivers

• if the instrument has been taken from a cold place to a hot place, the

humidity could condense inside; wait for about one hour before
applying power

• check that the power supply voltage, the frequency and the electric

operational power of the instrument correspond with those of the
local power supply

• disconnect the power supply before performing any type of mainte-

nance

• supply the probe with protection able to isolate it from any contact

with metal parts or use isolated probes

• do not use the instrument as a safety device
• for repairs and information regarding the instrument, contact the

Evco sales network.

2

PRELIMINARY CONSIDERATIONS

2.1

Preliminary considerations

It is possible to select the utilities managed by the digital outputs (i.e.
relays K1, K2 and K3) among a series of four combinations (instrument
codes 1, 2, 3 and 4); a fifth combination (instrument code 0) allows to
set the utility managed by each output independently.
INSTR. CODE

RELAY K1 UTILITY

RELAY K2 UTILITY

RELAY K3 UTILITY

0

can be set

can be set

can be set

(default temperature (default airhole)

(default steam

regulation)

injection)

1

temperature

airhole

alarm

(default)

regulation

2

temperature

chamber light

cooking timer

regulation

3

temperature

chamber light

steam injection

regulation

4

temperature

airhole

acoustics

regulation

To set the instrument code, see paragraph 4.1; to set the utility managed
by each output, see paragraph 4.2.
2.2

Management of the utilities

Temperature regulation.
The output activity mainly depends on the chamber temperature, the
work set-point and the parameter r0.
Airhole.
The output is activated in the following conditions:
• before the conclusion of the cooking timer count (of the time established

with the parameter c5), for the time established with parameter c6

• in manual mode, for the time established for parameter c7.
Steam injection.
The output activity depends mainly on parameter t0.
Through the multifunction input it is also possible to activate the output
in remote mode.
Alarm.
The output is activated during a temperature alarm.
Chamber light.
The output is activated in manual mode.
Cooking timer.
The output is activated during the cooking timer count.
Acoustics.
The output is activated in the following conditions:
• before the conclusion of the cooking timer count (of the time established

with the parameter c9), for the time established with parameter c4

• during an alarm or an error, with continuous contribution.
In spite of the fact that the instrument can manage the
7 utilities stated in this paragraph, there are 3 digital
outputs available. Make sure that the desired utility is
managed by the instrument (see paragraph 2.1).
3

USER INTERFACE

3.1

Preliminary considerations

The following functioning states exist:
• the “on” state (the instrument is powered and on: the regulators can

be on)

• the “stand-by” state (the instrument is powered but switched off via

software: the regulators are off)

• the “off” state (the instrument is not powered).
Successively, the term "switch-on" means the passage from the stand-by
state to the on state. The term "switch-off" means the passage from the
on state to the stand-by state.
When powered, the instrument re-proposes the state that it was in when
the power supply was disconnected.
3.2

Instrument switch-on/off

To pass from the stand-by state to the on state (and vice versa):
• make sure no procedure is in progress
• press

for 1s.

3.3

The display

If the instrument is in the on state:
• the upper part of the display will show the quantity established with

parameter P5:

- if P5 = 0, the display will show the chamber temperature
- if P5 = 1, the display will show the work set-point
• the lower part of the display will show the quantity established with

parameter P6:

- if P6 = 0, the display will show the chamber temperature
- if P6 = 1, the display will show the work set-point (in this case the “set”

LED will be on)

- if P6 = 2, the display will show the value of the cooking timer or its

count if the timer is active (in this case the “timer” LED will be on); the
value of the cooking timer is displayed in the hours:minutes format.

See also paragraphs 3.4 and 3.6.
If the instrument is in the stand-by state:
• the upper part of the display will be off
• the lower part of the display will be off
• the LED will be on.

To modify the utility managed by an output:
• press

: the lower part of the display will show the corresponding
value.

The meaning of the values is the following:

VALUE MEANING

0

not used

1

temperature regulation

2

airhole

3

steam injection

4

alarm

5

chamber light

6

cooking timer

7

acoustics

• press

or

within 15s

• press
To exit the procedure:
• press

and

for 4s.

If the instrument code is not set at 0, display only is
allowed but not the modification of the value correspond-
ing to the utility managed by the output.
4.3

Setting the work set-point

• make sure that the instrument is in on state and that no procedure is

in progress

• press

: the lower part of the display will show “SP”, the upper
part the corresponding value and the LED

will flash

• press

or

within 15s; see also parameters r1 and r2

• press

: the LED

will switch-off, after which the instrument

will exit the procedure.

To exit the procedure in advance:
• do not operate for 15s (any modifications will be saved).
It is also possible to set the work set-point via the SP parameter.
4.4

Setting the configuration parameters

To access the procedure:
• make sure that the instrument is in stand-by state and that no proce-

dure is in progress

• press

and

for 4s: the upper part of the display will show
“PA”

• press

: the lower part of the display will show the corresponding
value

• press

or

within 15s to set “-19”

• press

or do not operate for 15s

• press

and

for 4s: the upper part of the display will show
“SP”.

To select a parameter:
• press

or

To modify a parameter:
• press

: the lower part of the display will show the corresponding
value

• press

or

within 15s

• press

or do not operate for 15s.

To exit the procedure:
• press

and

for 4s or do not operate for 60 s (any modifica-
tions will be saved).

Cut the instrument power supply off after modification of
the parameters.
4.5

Restore the default value of the configuration pa-
rameters

• make sure that the instrument is in stand-by state and that no proce-

dure is in progress

• press

and

for 4s: the upper part of the display will show
“PA”

• press

: the lower part of the display will show the corresponding
value

• press

or

within 15s to set “743”

• press

or do not operate for 15s

• press

and

for 4s: the upper part of the display will show
“CFG”

• press

or

to select “dEF”

• press

: the lower part of the display will show the corresponding
value

• press

or

within 15s to set “149”

• press

or do not operate for 15s: the upper part of the display will
show “dEF” flashing for 4s, after which “dEF” will switch
on

• cut the instrument power supply off.
To exit the procedure in advance:
• press

and

for 4s during the procedure (i.e. before setting
“149”: restore will not be carried out).

Make sure that the default value of the parameters is appro-
priate.
5

COOKING TIMER

5.1

Preliminary considerations

The cooking timer allows to start the reverse countdown of a time.
The count is shown in the lower part of the display; during the count
the “timer” LED is on and the timer output is activated.
Before conclusion of the count (of the time established with parameter c9)
the buzzer and the acoustic output are activated, for the time estab-
lished with parameter c4.
Before conclusion of the count (of the time established with parameter c5)
the airhole is activated, for the time established with parameter c6.
Using the multifunction input, it is also possible to start/interrupt the
cooking timer in remote mode.

5.2

Setting the cooking timer

• make sure that the instrument is in the on state, that the cooking timer

count is not in progress and that no procedure is in progress

• press

and

: the lower part of the display shows the value of
the cooking timer; the left part and the “timer”
LED will flash.

The value of the cooking timer is displayed in the hours:minutes format.
To modify the hour:
• press

or

within 15s

• press

: the right part will flash.

To modify the minutes:
• press

or

within 15s.

The cooking timer can be set between 00:00 and 24:00 h:min.
• press

: the “timer” LED will switch-off, after which the instrument
will exit the procedure.

To go back to previous levels:
• press

several times during the procedure.

To exit the procedure in advance:
• do not operate for 15s (any modifications will be saved).
The cooking timer can also be set when the count is in progress (this
modification is temporary, i.e. any power supply cut-off causes the value
set with the procedure given at the start of this paragraph to be restored).
If the value is set at 00:00 h:min, the count will be interrupted, the “timer”
LED will switch-off and the buzzer will be activated for 3 seconds.
5.3

Starting the cooking timer

• press

during timer setting: the “timer” LED will switch on.

Alternatively:
• make sure that the instrument is in on state and that no procedure is

in progress

• press

: the “timer” LED will switch on.

5.4

Interrupting the cooking timer

• press

for 1s: the “timer” LED switches off and the buzzer will be
activated for 3s.

6

STEAM INJECTION

6.1

Preliminary considerations

The functioning mode of the steam injection depends on parameter t0.
If the parameter t0 is set at 0, pressing the

key causes the injection

of steam for the time established with parameter t2 or for the entire
duration that the key is pressed. The parameter t1 establishes the mini-
mum time that can pass between the two successive injections.
If the parameter t0 is set at 1, pressing the key

will enable the

automatic injection of the steam (in cyclical mode: parameter t2 estab-
lishes the duration of the injector switch-on and parameter t1 estab-
lishes the duration of switch-off).
Using the multifunction input, it is also possible to cause the same effect
by pressing the

key in remote mode.

If the steam injection is not managed by any digital output, pressing the

key will cause the display of the “no” indication for 1s in the lower

part of the display.
6.2

Quick setting of the parameter t2

• make sure that the instrument is in on state and that no procedure is

in progress

• press

and

: the upper part of the display will show “t2”, the
lower part the corresponding value and the LED

will flash.

The parameter t2 can be set between 1 and 250 ds.
If steam injection is not managed by any digital output, the lower part
of the display will show “no” for 1s.
• press

or

within 15s

• press

: the LED will switch-off, after which the instrument will
exit the procedure.

To exit the procedure in advance:
• do not operate for 15s (any modifications will be saved).
6.3

Activation of the injector in manual mode (only if
parameter t0 is set at 0)

• make sure that the instrument is in on state and that no procedure is

in progress

• press

: the LED will switch-on and the injector will be acti-
vated, both for the time established with parameter t2 or for
the entire duration that the key is pressed.

The injector must not be deactivated in manual mode.
6.4

Enabling of automatic steam injection (only if pa-
rameter t0 is set at 1)

• make sure that the instrument is in on state and that no procedure is

in progress

• press

: the LED will switch-on and the injector will be acti-
vated in cyclical mode according to that established with
parameters t1 and t2 (until the key is pressed again).

7

AIRHOLE

7.1

Preliminary considerations

The airhole is activated in the following conditions:
• before the conclusion of the cooking timer count (of the time established

with the parameter c5), for the time established with parameter c6

• in manual mode, by pressing the

key for the time established

with parameter c7.

If the airhole is not managed by any digital output, pressing the

key will cause the display of the “no” indication for 1s in the lower

part of the display.

3.4

Learning the quantity shown by the upper part of
the display during the on state

• make sure no procedure is in progress
• press

and

: the upper part of the display will show one of the
labels given in the following table for 2 secs:

LABEL MEANING

Pb

chamber temperature

SP

work set-point

3.5

Temporary setting of the quantity shown by the
upper part of the display during the on state

• make sure no procedure is in progress
• press

and

for 1s several times: the upper part of the display
will show one of the labels given in the table in
paragraph 3.4 for 2 secs, after which it will show
the corresponding value.

Any power supply cut-off causes the display of the quantity established
with parameter P5 to be restored.
3.6

Learning the quantity shown by the lower part of
the display during the on state

• make sure no procedure is in progress
• press

and

: the lower part of the display will show one of the
labels given in the following table for 2 secs:

LABEL MEANING

Pb

chamber temperature

SP

work set-point

tine

value of the cooking timer or its count if the timer is active

3.7

Temporary setting of the quantity shown by the
lower part of the display during the on state

• make sure no procedure is in progress
• press

and

for 1s several times: the lower part of the display
will show one of the labels given in the table in
paragraph 3.6 for 2 secs, after which it will show
the corresponding value.

Any power supply cut-off causes the display of the quantity established
with parameter P6 to be restored.
3.8

Chamber light switch-on/off

• make sure no procedure is in progress
• press
If the chamber light is not managed by any digital output, pressing the

key will cause the display of the “no” indication for 1s in the lower

part of the display.
3.9

Buzzer silencing

• make sure no procedure is in progress
• press a key (the first time the key is pressed, the associated effect is not

caused).

Pressing the key also causes the deactivation of the acoustic output and
the buzzer output.
Using the multifunction input, it is also possible to deactivate the buzzer,
the acoustic output and the buzzer output in remote mode.
4

SETTINGS

4.1

Setting the instrument code

To access the procedure:
• make sure that the instrument is in stand-by state and that no proce-

dure is in progress

• press

and

for 4s: the upper part of the display will show
“PA”

• press

: the lower part of the display will show the corresponding
value

• press

or

within 15s to set “743”

• press
• press

and

for 4s: the upper part of the display will show
“CFG”.

To modify the instrument code:
• press

: the lower part of the display will show the corresponding
value

• press

or

within 15s

• press
To exit the procedure:
• press

and

for 4s.

The modification of the instrument code does not cause
the configuration parameters default value to be restored.
4.2

Setting the utility managed by each digital output
(only if the instrument code is set at 0)

To access the procedure:
• make sure that the instrument is in stand-by state and that no proce-

dure is in progress

• press

and

for 4s: the upper part of the display will show
“PA”

• press

: the lower part of the display will show the corresponding
value

• press

or

within 15s to set “743”

• press
• press

and

for 4s: the upper part of the display will show
“CFG”

• press

or

to select “do1”, “do2” or “do3”.

The label meaning is the following:

LABEL MEANING

do1

utility managed by the first digital output (relay K1)

do2

utility managed by the second digital output (relay K2)

do3

utility managed by the third digital output (relay K3)

7.2

Quick setting of the parameter c7

• make sure that the instrument is in on state and that no procedure is

in progress

• press

and

: the upper part of the display will show “c7”, the
lower part the corresponding value the left part
and the LED will flash.

The parameter c7 is visualised in the minutes:seconds format.
To modify the minutes:
• press

or

within 15s

• press

: the right part will flash.

To modify the seconds:
• press

or

within 15s.

The parameter c7 can be set between 00:00 and 60:00 min:s.
If the airhole is not managed by any digital output, the lower part of the
display will show “no” for 1s.
• press

: the LED will switch-off, after which the instrument will
exit the procedure.

To go back to previous levels:
• press

several times during the procedure.

To exit the procedure in advance:
• do not operate for 15s (any modifications will be saved).
7.3

Activation of the airhole in manual mode

• make sure that the instrument is in on state and that no procedure is

in progress

• press

: the LED will switch on and the airhole will be activated,
both for the time established with parameter c7.

7.4

Deactivation of the airhole in manual mode

• make sure no procedure is in progress
• press

: the LED will switch-off.

8

SIGNALS

8.1

Signals

LED

MEANING
temperature regulation LED
if it is on, the output for the regulation of the temperature
will be activated
if it flashes, the work set-point modification is in progress
(with the procedure indicated in paragraph 4.3)
steam injection LED
if it is on:
• and the parameter t0 is set at 0, steam injection will be in

progress

• and the parameter t0 is set at 1, steam injection will be in

enabled

if it flashes, rapid setting of parameter t2 is in progress (see
paragraph 6.2)
airhole LED
if it is on, the airhole will be activated in manual mode
if it flashes:
• the airhole will be activated due to the effect of the conclu-

sion of the cooking timer count (parameter c6)

• rapid setting of parameter c7 is in progress (see paragraph 7.2)

°

C

degrees Celsius LED
if it is on, the unit of measurement of the temperatures will
be degrees Celsius (parameter P2)

°

F

degrees Fahrenheit LED
if it is on, the unit of measurement of the temperatures will
be degrees Fahrenheit (parameter P2)
on/stand-by LED
if it is on, the instrument is in the stand-by state

timer cooking timer LED

if it is on, the quantity shown by the lower part of the display
will be the value of the cooking timer or its count if the timer
will be activated
if it flashes:
• cooking timer setting is in progress
• the cooking timer count will be in progress but the lower

part of the display will be showing another quantity

set

work set-point LED
if it is on, the quantity shown by the lower part of the display
will be the work set-point value

9

INDICATIONS

9.1

Indications

INDICAT. MEANING

decrease the time established with parameter c9 is missing ... 1second

time

to the conclusion of the cooking timer count

c9

00:00 flashing: the cooking timer count has ended

no

the function requested is not managed by any digital output

10

ALARMS

10.1 Alarms

CODE MEANING

AL

temperature alarm
Remedies:
• check the chamber temperature
• see parameters A1 and A3
Consequences:
• the alarm output will be activated
• the acoustics output and the buzzer output will be acti-

vated