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Infrared reflow oven MR10
Contents
1. GENERAL DESCRIPTION ..................................................................................................................................3
1.1. TECHNICAL DATA ..............................................................................................................................................3
2. INSTALLATION ....................................................................................................................................................4
3. CONTROL SYSTEM .............................................................................................................................................5
3.1. CONTROL PANEL ................................................................................................................................................5
4. SOLDERING PARAMETERS SETUP ................................................................................................................8
4.1. MANUAL PROFILE SETUP ...................................................................................................................................8
4.1.1. Heater Profile Setup ..................................................................................................................................8
4.1.2. Time Setup .................................................................................................................................................9
4.2. AUTO PROFILING (MR10A ONLY)......................................................................................................................9
5. EXAMPLE FOR SOLDERING PROFILES SETUP........................................................................................11
6. MALFUNCTIONS / ERROR MESSAGES........................................................................................................12
7. LIST OF SPARE PARTS.....................................................................................................................................13
8. ELECTRICAL DIAGRAM .................................................................................................................................14
Infrared reflow oven MR10
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1. General Description
Mechatronika’s infrared reflow oven MR10 ca be used for hardening glue spots as well as for the
soldering process on surface mounted printed circuits boards. MR10 controls the process according to previously defined time/temperature profiles, after the PCB has been feeded into transport
frame.
The transport frame goes through 3 (4) processing sections:
• initial preheating area
• preheating area
• soldering area
• dwell area (for lead free process)
After pressing the START-key the transport frame brings the PCB into the initial preheating
area (soldering area), leaving it for TF seconds there while the PCB reaches it's preheating temperature TP1.Then the transport frame travels into preheating and stays at this temperature for TP
seconds. So the PCB can reach TP2 temperature, where the volatile components of solder paste
vaporise out. Then the transport frame travels into reflow area to melt the solder paste into solid
connections (reflow temperature TR for TR seconds). For lead free process transport frame travels
back to preheating for TD seconds to create plateau. The soldering process ends with cooling the
PCB down, the transport frame will run into its original position, while a optional fan is activated
for TC seconds. Separating the soldering process into four explicitly definable phases with microprocessor control and auto profiling system, the PID control and the precise stepper-motordriven transport system realise a highly accurate soldering process control.
1.1. Technical Data
pcb size................................170x270 mm
pcb transport ........................transport frame, moving back to feeding position after soldering process
heating elements ............... 0,7kW and 1,3kW far infrared heater
control............................... microprocessor, PID-control, 12 soldering profiles
power consumption ..............2kW max, average cycle power 1,4kW
power supply ........................230V±10%; 50Hz
dimensions (l x w x h) ...........900x520x350mm
weight...................................45kg
Infrared reflow oven MR10
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2. Installation
The reflow oven MR10 should be installed according to fig.2 and can be connected to used air
flue with fan, which is to be wired to one of the plugs in the rear panel of the machine. So the fan
is activated only in the cooling phase of the soldering process. The reflow oven doesn't need any
maintenance. If performance of heaters drops, check whether the fuses in the rear panel of the
machine are intact and change in case of damage.
Fig.2: Installation of MR10
Infrared reflow oven MR10
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3. Control system
Fig.3 shows the functional blocks of MR10’s control system:
Fig.3: MR10 control systems
3.1. Control Panel
Control panel contains the following functional elements:
·
·
·
·
Main switch
LCD display
Keyboard
Temperature probe plug
Infrared reflow oven MR10
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Fig.4: MR10 control panel
The following information are shown on LCD-display:
·
·
·
·
soldering profile number
soldering parameters belonging to this profile
actual soldering phase
with auto profiling system: actual soldering temperature on pcb
The keyboard has the following functions:
PROFILE................... chooses number of soldering profile
TIME ......................... time setup for all soldering phases (F/P/R/D/C)
TEMP......................... temperature setup for all soldering phases (P/R)
(-) ............................... reduces value of parameter on display
(+) ............................... increases value of parameter on display
ENTER....................... stores parameter on display to memory
if pressed during soldering process: stops actual process and starts next
one
START........................starts soldering process
STOP.......................... stops actual sequence of soldering process and moves
transport frame to feeding position
Infrared reflow oven MR10
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if pressed during parameter setup process: display shows the actual temperature of heaters
Infrared reflow oven MR10
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4. Soldering parameters setup
The following parameters can be defined for the different soldering profiles:
Process time:
F ..... initial preheating time
P ..... preheating time
R..... reflow time
D .....dwell time
C..... cooling time
Process temperatures:
P ..... preheating heater temperature
R..... reflow heater temperature
process
temp.
Tr
TP2
Tp
TP1
tF
tP
tR
tD
tC
Process
time
Fig.5: soldering profile
4.1. Manual Profile Setup
For manual setup of soldering process the temperatures of both heater areas and the times, the
pcb will stay in them, have to be defined as follows:
4.1.1. Heater Profile Setup
For heater temperature setup proceed as follows:
Infrared reflow oven MR10
Action, Key
9
System answer
→ press PROFILE key until number of profile to be altered is shown
LCD shows actual temperature setup for P→ press TEMP key
area
→ press (+) or (-) key until right value is
shown on display
previously defined setup parameters are
→ press ENTER key
stored to memory
LCD display proceeds to temperature setup
→ press TEMP key
for R-area
→ adjust display value with (+) and (-) key
→ press ENTER key
4.1.2. Time Setup
For time setup proceed as follows:
Action, key
System answer
→ press PROFILE key until LCD-display
shows the number of the profile to be altered
LCD display shows actual time setup (first
→ press TIME key
for phase F)
→ press (+) or (-) key until right value is
shown on display
previously defined setup parameters are
→ press ENTER key
stored to memory
LCD display shows actual time setup for
→ press TIME key
next phase (P)
...procedure continues as before for all soldering phases.
4.2. Auto Profiling (MR10A only)
Auto profiling mode measures the actual temperature on PCB and compares it with the desired
value, thus determining, how long the PCB has to stay in the single heating areas. The actual
temperature is measured with means of an temperature probe plugged into the control panel of
MR10A, whose active end is fixed to the PCB while running through soldering process.
Before auto profiling mode both heater area temperatures have to be defined according to 4.1.1.
Then proceed as follows:
Infrared reflow oven MR10
Action, key
10
System answer
→ press PROFILE key to reach desired
desired profile number
number of the profile
→ press ENTER key for several seconds profile setup
LCD shows actual temperature setup for Tpl
→ press TEMP key
(starting temperature for heating process)
→ adjust right value by pressing (-) or (+)
key
stores adjusted value to memory
→ press ENTER key
...procedure continues as before for defining the other profile temperatures TP2 (end of heating
process), TR (reflow temperature) and TC (cooling temperature).
→ press START
→ press ENTER for memorise measured
time intervals or STOP to skip them
The transport frame goes into the heating
areas; control system displays actual time
and measured temperature on the PCB. On
the end control system displays 4 measured
times.
Infrared reflow oven MR10
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5. Example for soldering profiles setup
The following setup parameters should only be the starting point for further tests to reach solid
soldering joints:
Standard solder paste
temperature
time
TP=180°C
tF=15s
tP=180s
tR=25s
tD=0s
tC=30s
TR=420°C
Lead free solder paste
temperature
time
TP=190°C
tF=0s
tP=150 -180s
tR=30s
tD=20s
tC=30s
TR=430°C
Infrared reflow oven MR10
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6. Malfunctions / error messages
6.1
Malfunctions
Machine does not start after switch-on
–
–
Check power connection
Check fuses on the rear side of the oven
NOT READY message on the display after pressing START key
–
–
The heaters didn't reach programmed temperatures; press STOP key to terminate Start command or wait for readiness of the heaters
If NOT READY message displays longer than 1 hour check the fuses; if fuses are good contact with service
6.2
Error messages on the display
Message
POSITIONING ERROR
Meaning
Stepper motor miss the position during positioning; if message displays several times
contact with service for cleaning positioning system
OPEN TERMOCOUPLE
Transport frame didn't reach Home position in programmed time; if motor didn't
start check fuses; if transport frame starts,
but moves badly contact with service for
cleaning positioning system
Contact with service for thermocouple
changing
ERROR EEPROM
Eeprom content corrupted; contact with
service for advice
INITIALIZATION ERROR
Infrared reflow oven MR10
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7. List of spare parts
1.
2.
3.
4.
5.
6.
7.
8.
9.
Thermocouple for heaters
Thermocouple for auto profiling
Heater for preheating area
Heater for soldering (reflow) area
Control board
Contactor (relay)
Keyboard / display assembly
Motor assembly
Fan
MR10.100
MR10.105
MR10.110
MR10.120
MR10.200
MR10.210
MR10.220
MR10.230
MR10.240
Infrared reflow oven MR10
8. Electrical diagram
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