The electronic cards are:
- Relay card
- Display
- Inverter
- Depending on the oven options, there will be dedicated expansion boards.
- Plug-in gas (only in ovens with gas heating system)
- Plug-in SSR (only in units with electric heating system)
- Boiler expansion (only in units with boiler option)
- FastDry controller
The operation and the user interface of the appliance systems are managed by electronic cards.
Relays Board
12-13 B3 Door microswitch
14-15 PG Gas p.switch
16-17 PA Water p.switch
Keyboard connection
10-11 Power supply 12VAC
Core Probe
6-5 Condens. probe SD
5-6 Boiler probe SB
7-8 Chamber probe SC
Bus RS485 - Inverter
18 O. Hood activation
19 O. power ignition panel Z1
20 O. power ignition panel Z3
21 I. phase
22 O. power C6-A1
23 O. Fast-Dry V2
24 O. S.V. Condens. S5
25 O. S.V. Direct Steam S1
26 O. S.V. Washing S7+ML
27 O. Detergent pump PD1
28 O. Light power supply T3
29 O. P.Grill/S.V. S7.1+MLi
30 O. Cooling fans M2
31 O. Detergent pump PD2
32 I. Phase L1 from F3
33 O. Reset burner C1-C2
34 O. Reset burner B1-B2
35 I. Neutral
36 O. Neutral
37 O. Neutral Cham. Burner
38 O. Reset burner C1
39 I. No flame Cham. Alarm
40 I. Phase L1 from F2
41 I. Phase L1 from thermal motor prot.
USB connection
Plug-In 1 (all units)
Plug-In 2 (floor units)
The relay board controls the operation of the unit based on the indications provided by the display that acts as a user interface.
analog inputs highlighted in green, digital inputs (open/closed) highlighted in blue; inputs and outputs with line voltage that are highlighted in red
SOFTWARE/FIRMWARE
The operation of the relay board is based on proprietary software that is generally identified as Firmware (FW).
The Firmware controls and regulates the operation of the device based on the operating parameters, inputs from the sensors and the settings given by the user on the display.
For obvious reasons the FW must be aligned with the SW of the display card.
If there is no dialogue, it is possible to update the FW of the relay board by connecting a USB stick to the USB port of the board: see SW UPDATE chapter.
Scheda Display
The display is composed by two separate boards; the display board and the encoder board which hold 3 encoders(the lower one has also function to power on).
Display is fixed to the front panel trough several bolt.
Warning: when replacing the display car to keep the right distance/pressure on the front panel because if too squeezed on the front layer more than one button will be pressed and any pressure will be acquired.
SoftWare & FirmWare
To run the firmware update, are required:
a) The SW and FW; you can find them on the web site www.service-planner.lainox.it
b) The USB stick (max 4GB – check for compatibility or use a LAINOX USB Key)
Download the firmware from the website, extract the files from the compressed folder and save them on the USB key
It is possible to update the firmware of the Display PCB and the I/O PCB.
Both are available on the LAINOX website. We suggest checking for updates monthly and updating all units during any repair and maintenance work.
Display Software Update
a) Plug the USB stick into the USB socket.
b) Put the unit in standby mode
c) Select the menu key
d) Select settings
e) Scroll to firmware update and press the dial to confirm
f) Follow instructions and confirm the update
g) The system will download the files and a bar will show the progress.
h) Final confirmation to proceed
i) The old FW will be erased and the new one installed. When completed, switch off and on again with the USB stick connected, the display will flash and download continue.
j) To complete the process, reboot the unit before removing the USB key.
It is possible to update the firmware of the Display PCB.
Check and update the SW during every maintenance
Base board FirmWare update
a) Switch off the power supply
b) Open the front panel
c) Plug the USB stick into USB socket on the I/O PCB.
d) Switch on the power supply
e) Wait 120”
f) Switch off the power supply
g) Unplug the USB key and close the front panel
After any FW update, check from Settings-Firmware version if the update was successful.
It is needed to update the firmware of the base board when updating the Display PCB.
Check and update the FW during every maintenance
Inverter
A) Power input 230 +/- 10%
B) Bus connection to the relay board
C) Output terminals U, V, W with 400VDC
D) Dip-switch identification
E) On=1° inverter
F) 1 =2° inverter (for units with 2 motors/inverter)
If the inverter is replaced, always check and set the dip-switch D) and configure the new inverter from the Service level / Inverter management.
The inverter board, common to all oven models, control the fan motor based on the settings given by the relay board by BUS.
Pay attention to the electrical contacts of the board and wait a few minutes after power off before operating on it.
Control
The inverter is equipped with a control system and self-diagnosis that communicates with the relays board via BUS and with the technician via the green and red LEDs that provide details on the status and operation.
The number of flashes of the red LED provides indications of the type of error (first flashing lasts about 1sec the other ½sec)
Plug-in SSR
Connection
There are 2 connectors on which the SSR wiring is plugged:
J1 Chamber heating control
J2 Boiler heatign control
On floor units, where there are two fans and two separate heating systems, a second plugin is installed and must be connected to Plug-in 2
See Electric Heating chapter for more details
The SSR plug-in is installed on the Plug-in 1 connector of the relay board and acts as an interface between the relay board and the SSR by transforming the SSR activation frequency into a 12VDC signal.
Plug-in Gas
Connection
Plug-In is plugged straight to relays board
J1 chamber blower control
J2 boiler blower control
59 I. chamber flame detection
60 I. boiler flame detection
61 Neutral line burner
The GAS plug-in is installed on the Plug-in 1 connector of the relays board and acts as an interface between the relays board and the burners.
See Gas Heating chapter for more details
Boiler Expansion
42 Power line from F3
43 Neutral line
53 L3 Max level probe
54 L2 Emergency level probe
55 Boiler ground
56 L1 Empty level probe
48 Phase
49 Phase
50 O. burner boiler 1 Z2
52 O. burner boiler 2 Z4
45 O. pump Psb emptying
46 O. pump Pb calout
47 O. Solenoid V. S2 filling
64 I. No flame boiler burner
65 O. reset boiler burner
66 Neutral burner boiler
The boiler expansion board controls the operation of the steam generator and is only present in appliances equipped with this option.
The board does not have its own software and communicates with the relay card via parallel connection