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3

CR-4000C 4-Zone SMT Reflow Oven

The CR-4000C is a perfect fit for those assemblers who want a compact medium-volume lead-free reflow with many of the profiling and performance characteristics of larger ovens.

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Chris — East Coast: 215.869.8374

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CR-4000C SMT Reflow Oven

Specifications

Lead Free Yes
Nitrogen Available No
Mesh Belt Width 20" (500mm)
Pin Conveyor 16" Max. (400mm)
Hand Crank. Power Adjust (optional)
Conveyor Speed (per min) 7.8-35" (200-900mm)
SMEMA Compatible Optional
Component Max. Height 30mm upper, 25mm lower
Forced Convection Yes
Number of Heating Zones 4 Independently Controlled Topside Convection Zones
2 Lower Convection Zones Controlled by Topside
1 Cooling Zone
Heated Tunnel Length 52" (1320 mm)
Delta T ±2° C
PID* Yes
Max Temperature 300° C
Ramp Time (from cold start) < 15 min
Flux Management System No
Control PC
On-Board Profiling Yes
Dimensions 2000 mm L x 1200 mm W x 1450 mm H
(79" L x 47.2" W x 57" H)
Weight approx. 950 kg (2095 lbs.)
Power 220 V, 3-Phase, 60 A, 19KW
Required Active Exhaust 400CFM per port
# of Exhaust Vents 2
Battery Backup UPS Uninterruptible Power Supply for Conveyor & PC
Hood Opening Mechanism Automatic Raise and Lower

*(Proportional-Integral-Differential)

Details

Cost-Efficient Reflow Oven Packs Advanced Features as Standard
Except in the areas of size, energy use and price—which are all much lower—the CR-4000C reflow oven matches many big ovens, feature for feature, starting with its conveyor system.

CR-4000C features a combination stainless steel mesh belt with a board-heating width of 20" (500 mm) and a conveyor capable of handling assemblies to 16" (400 mm) wide. Automatic width adjustment of the pin conveyor, based on the parameter settings for specific reflow programs, is available as an option. The combination conveyor provides maximum board handling flexibility and ensures double-sided board processing capability. The pin conveyor's automatic oiler is software-driven for optimum preventative maintenance.
Computer Control Includes Real-Time Temperature Profiling and Profile Prediction Software
Also part of the package is an on-board computer with Windows®-based password-protected software to permit on-screen profiling that, thanks to the included KIC Auto Focus profile prediction software, sets oven parameters automatically.

Process control parameters that produce a specific temperature profile can be saved to and loaded from memory for specific production runs. Once loaded, specific zone temperature settings, upper and lower limits, alarm settings and conveyor speeds can be adjusted as necessary. Password protection separates basic operator functions from critical parameter settings that should only be changed by supervisors or production managers.

Thermal data from up to three separate thermocouple inputs is charted in real-time on-screen.
Reliable Results with Lower Energy Consumption
Reliable, repeatable results are assured with the CR-4000C's four independently controlled, forced-hot-air convection zones of high mass heating panels and two bottom-side convection zones, spanning a total heating length of 52" (1320 mm). Three thermocouple inputs are provided for advanced temperature profiling and thermal management functions.

All this in a space-saving length of just over 6 ½ ft.

The CR-4000C is also a very green machine, consuming just 5 to 8 KW of electricity, even when ramped up to lead-free temperatures of up to 300°C. Timed automatic startup and shutdown functions allow warm-up and cool-down times to be coordinated with breaks in productions and transitions between three separate work shifts in each 24-hour period, promoting both production preparedness and energy savings.

Profile Prediction

HOW 'AUTO FOCUS POWER' PROFILE PREDICTION WORKS:

1. Select Your Solder Paste Formula and Process Window
The KIC Auto-Focus Power software includes a database of over 1000 different solder paste formulas from dozens of different solder paste manufacturers. Each database entry includes the manufacturer's recommended solder profile for that specific solder paste formula and identifies critical specifications (i.e. maximum ramp rate, maximum cooling rate, temperatures for preheat, soak, reflow, and peak, allowable times above those temperatures, etc., with upper and lower limits for each) that define the process window. After selecting the solder paste, users can either use the profile as is or can modify the specifications to create a process window that meets their own unique criteria.
Process Window 2. Link Your Product to the Process Window
Once the Process Window is selected (defined), the next step in using Auto-Focus is selecting the product to be soldered (or assigning a name if the product has not yet been defined). This step, in effect, links the product to the selected process window. It also links the process window and the product to the CR Series Oven data in the database. The oven data has been produced by KIC's characterization of the unique thermal properties of specific CR Series oven models as they relate to varying product sizes and processes.
Product Process 3. Define the Product's Physical Characteristics
The user now enters the average length, average width, and total weight of the product.
Confirm-Recipe 4. Obtain and Confirm the Oven Settings
Auto-Focus now scans the built-in database for zone temperature/belt speed settings that produce a thermal profile that best fits within the process window when soldering a similarly sized product. By comparing that profile to the desired process window, Auto-Focus is able to estimate the PWI™ (Process Window Index); a single value that will give the user an indication of how far "within spec" the actual profile will be when using the recommended oven settings. If the PWI value is acceptable, the user can then obtain the exact temperature settings for each zone along with the belt speed.

 

Click here for More Information on AUTO FOCUS

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