EVCO S.p.A. | EV8338 | Instruction sheet ver. 2.0 | Code 1048338E203 | Page 1 of 4 | PT 50/20
EV8338
Controller for bread and pastry convection ovens
I
ENGLISH
-
power supply 115... 230 VAC or 24 VAC (according to the model)
-
built-in clock
-
chamber probe (J/K or Pt 100 2 wires)
-
multi-purpose inputs
-
PWM analogue output for EVCO speed regulator
-
alarm buzzer
-
TTL MODBUS slave port for programming key, for EVconnect app, EPoCA remote moni-
toring system or for BMS
-
USB port (set up recipe book, add and personalise languages, update firmware)
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on-off/PI control.
Models available
Purchasing
code
Power supply
Type of analogue in-
puts
Number of digital
outputs
EV8338J9
115... 230 VAC
for J/K thermocou-
ples or
Pt 100 2-wire probes
8
EV8338J4
24 VAC
for Pt 100 2-wire
probes and
J/K thermocouples
8
1
MEASUREMENTS AND INSTALLATION
Measurements in mm (inches). To be fitted to a panel, screwed-in brackets provided.
The tolerance of the measurements of the drilling template is +0.2 -0 mm.
INSTALLATION PRECAUTIONS
-
the thickness of the panel must be between 0.8 and 5.0 mm (1/32 and 3/16 in)
-
the maximum tightening torque applicable to the screwed-in brackets is 10 Nm
-
ensure that the working conditions are within the limits stated in the TECHNICAL
SPECIFICATIONS section
-
do not install the device close to heat sources, equipment with a strong magnetic field,
in places subject to direct sunlight, rain, damp, excessive dust, mechanical vibrations
or shocks
-
in compliance with safety regulations, the device must be installed properly to ensure
adequate protection from contact with electrical parts. All protective parts must be
fixed in such a way as to need the aid of a tool to remove them.
2
ELECTRICAL CONNECTION
N.B.
- use cables of an adequate section for the current running through them
- ensure that the thermocouple is properly insulated from contact with metal parts or
use already insulated thermocouples
- if necessary, extend the thermocouple cables using compensating cables
- where there are three multi-purpose inputs, multi-purpose input 1 has priority over
multi-purpose input 2 and multi-purpose input 3
- the TTL MODBUS port can be used as an alternative to the USB port and vice versa
- to reduce any electromagnetic interference, locate the power cables as far away as
possible from the signal cables.
Example of electrical connection with fan modulating with PWM driving signal, with frequency
tracking and with inversion of the fan direction, for EVCO inverter speed regulator (F0 = 4).
COMPATIBLE EVCO CUT PHASE SPEED REGULATORS
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EVC95E00X7XXX00 (650 W)
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EVC99E00X7XXX01 (950 W)
COMPATIBLE EVCO INVERTER SPEED REGULATORS
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EI750M2C04O0VXX (750 W)
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EI1K5M2C04O0VXX (1,5 kW)
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EI2K2M2C04O0VXX (2,2 kW)
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EI2K3M2C04O0VXX (2,3 kW)
PRECAUTIONS FOR ELECTRICAL CONNECTION
-
if using an electrical or pneumatic screwdriver, adjust the tightening torque
-
if the device is moved from a cold to a warm place, humidity may cause condensation
to form inside. Wait for about an hour before switching on the power
-
make sure that the supply voltage, electrical frequency and power are within the set
limits. See the section TECHNICAL SPECIFICATIONS
-
disconnect the power supply before carrying out any type of maintenance
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do not use the device as a safety device
-
for repairs and for further information, contact the EVCO sales network.
3
FIRST-TIME USE
1.
Carry out the installation following the instructions given in the section MEASUREMENTS
AND INSTALLATION.
2.
Power up the device as set out in the section ELECTRICAL CONNECTION: an internal
test will start up.
The test normally takes a few seconds; when it is finished the display will switch off.
3.
Configure the device as shown in the section Setting configuration parameters.
Recommended configuration parameters for first-time use:
PAR.
DEF.
PARAMETER
MIN... MAX.
P0
0
type of probe
0 = J
1 = K
2 = Pt 100 2-wire
P1
0
unit of measurement
0 = °C
1 = °F
r3
130
chamber setpoint
r1... r2
Then check that the remaining settings are appropriate; see the section CONFIGURA-
TION PARAMETERS.
4.
Disconnect the device from the mains.
5.
Make the electrical connection as shown in the section ELECTRICAL CONNECTION,
without powering up the device.
6.
For the connection in an RS-485 network connect the interface EVIF22TSX, to use the
device with the EPoCA remote monitoring system, connect the EVIF25TWX module, to
use the device with the APP EVconnect connect the interface EVIF25TBX; see the rele-
vant instruction sheets. If EVIF22TSX is used, set parameter bLE to 0.
7.
Power up the device again.
4
USER INTERFACE AND MAIN FUNCTIONS
4.1 Switching the device on/off
To switch the device on:
1.
Touch the ON/STAND-BY key.
To switch the device off:
1.
Touch the ON/STAND-BY key for 3 s.
If the device is switched on, the display will show:
If the chamber setpoint in pre-heating mode has been reached, the status of the device will
show “READY", if not, it will show "PRE-HEATING". If the last programme started up was
manual, the status of the device will show "MANUAL". If the last cooking cycle was a recipe,
the status of the device will show the name of the recipe.
If the device is switched off, the display will show the time. If the weekly programmed switch-
on function is activated, the display will also show the day and time of the next switch-on and
the programme that will start.
If the status of the device shows an alarm code, see the section ALARMS.
4.2 Starting up/interrupting the cooking cycle
To start up a cooking cycle:
-
make sure that the device is switched on
-
make sure that the cooking timer is set
1.
Touch the START/STOP key: the cooking timer will start up and
the status of the device will show "COOKING". When the timer
stops, it will show "END".
To interrupt the cooking cycle:
1.
Touch the START/STOP key for 1 s.
4.3
Adding cooking minutes (4 maximum) to the final phase of a finished cycle
1.
Touch the INTERACTIVE 4 key.
2.
Take no action for 5 s.
4.4
Setting the cooking timer
Make sure that the device is switched on.
1.
Touch the INTERACTIVE 4 key: the display will show the minutes
in yellow.
2.
Touch the INTERACTIVE 1 key or the INTERACTIVE 2 key within
15 s to set the value.
3.
Touch the INTERACTIVE 3 key: the display will show the seconds
in yellow.
4.
Touch the INTERACTIVE 1 key or the INTERACTIVE 2 key within
15 s to set the value.
5.
Touch the INTERACTIVE 3 key (or take no action for 15 s).
6.
Touch the INTERACTIVE 4 key to exit the procedure beforehand
(any changes made will not be saved).
4.5 Setting the chamber setpoint
Make sure that the device is switched on.
1.
Touch the INTERACTIVE 2 key: the display will show the value in
yellow.
2.
Touch the INTERACTIVE 1 key or the INTERACTIVE 2 key within
15 s to set the value within the limits r1 and r2 (default “0...
300”).
3.
Touch the INTERACTIVE 3 key (or take no action for 15 s).
4.
Touch the INTERACTIVE 4 key to exit the procedure beforehand
(any changes made will not be saved).
