Technical_reference - 第8页
Technical Service Manual 8 Revision Dat e: August 2004 MEASUREMENT CONVERSIONS Temperatu re Length Degrees Celsius (°C) = 5 / 9 x ( °F - 32) Centim eters (cm ) = 2.54 x inches Degrees Fahr enheit (°F) = (9 / 5 x °C) + 32…
Technical Service Manual 7 Revision Date: August 2004
LED Light Emitting Diode.
DI Digital Input Board. One of the boards in the Oven internal control unit.
MNPT Male National Pipe Thread.
Offload The end of the oven where product exits the tunnel.
Ohmmeter A precision instrument used to check and display the value of electrical resistances in Ohms.
Onload The end of the oven onto which product is placed and enters the tunnel
Phase One leg of three-phase power.
Plenum A large (or elongated) cavity or chamber, usually in ductwork.
Preheat A thermal area inside a Vitronics-Soltec Reflow oven.
Recipe
A file within of the Vitronics-Soltec software in which heater temperatures and conveyor speed
configurations can be set.
Reflow A thermal area inside a Vitronics-Soltec Reflow oven.
ROSCO Redundant Over-temperature Sensing and Control Option.
RTV (Room Temperature Vulcanizing) The type of silicone sealing agent used in the Reflow oven.
Set point
A number used to define a particular parameter in the oven. For example, the temperatures
that are defined in a recipe are referred to as the heater set points for each heater.
Slot settings
Air passages (slots) on both sides of the heater panel that can be adjusted from fully open to
fully closed. Slot settings refers to the actual opening size of these air passages.
SSR Solid State Relay
T/C ThermoCouple
OCP
Oven Control Program. The software which controls the operation of the Vitronics Soltec
Reflow oven.
VCS
Vitronics Control System – Oven controller consisting of the card cage / backplate, a DI board,
and one or more AI boards
Zone
An area of a Vitronics-Soltec Reflow oven that is comprised of an upper and a lower cell within
the process tunnel. Usually referred to as a “heat zone” or “cooling zone”.
Technical Service Manual 8 Revision Date: August 2004
MEASUREMENT CONVERSIONS
Temperature
Length
Degrees Celsius (°C) = 5 / 9 x (°F - 32) Centimeters (cm) = 2.54 x inches
Degrees Fahrenheit (°F) = (9 / 5 x °C) + 32 Feet (') = 3.281 x meters
Inches (") = 0.03937 x millimeters
Inches (") = 0.3937 x centimeters
Meters (m) = 0.3048 x feet
Millimeters (mm) = 25.4 x inches
Area
Volume
Centimeters
2
= 6.452 x inches
2
Centimeters
3
= 1000000 x meters
3
Inches
2
= 0.155 x centimeters
2
Centimeters
3
= 16.387 x inches
3
Feet
2
= 10.76 x meters
2
feet
3
= 0.161 x Imperial gallons
Meters
2
= 0.0929 x feet
2
feet
3
= 35.31 x meters
3
feet
3
= 0.134 x US gallons
inches
3
= 0.061 x centimeters
3
inches
3
= 0.061 x milliliters (ml)
inches
3
= 1728 x feet
3
Imperial gallons = 0.833 x US gallons
Imperial gallons (gal) = 0.22 x liters (l)
Liters (l) = 1000 x meters
3
Liters (l) = 3.7854 x US gallons (gal)
Liters (l) = 4.55 x Imperial gallons (gal)
Liters (l) = 0.001 x milliliters (ml)
meters
3
= 0.00455 x Imperial gallons
meters
3
= 0.02832 x feet
3
meters
3
= 0.00379 x US gallons
US gallons (gal) = 0.264 x liters (l)
US gallons = 1.2012 x Imperial gallons
Pressure
Volumetric flow rates
Bar = 1.01325 x atmosphere (ATM) Imperial gallons / minute = 0.1035 x feet
3
/ hour
Kilograms / meter
2
(kg/m
2
) = 10332.3 x atmosphere
(ATM)
Imperial gallons / minute = 220.06 x meters
3
/ Min
Kilograms / centimeter
2
= 0.0703 x pounds / inch
2
(psi)
liters
3
/ second = 0.06308 x US gallons / minute
KiloPascals (KPa) = 101325 x atmosphere (ATM) meters
3
/ minute = 0.00006 x centimeters
3
/ second
Kilograms / meter
2
(kg/m
2
) = 703.07 x pounds / inch
2
(psi)
meters
3
/ hour = 0.02832 x feet
3
/ hour
millimeters mercury (mm Hg) = 1 x Torr = 760 x
atmosphere (ATM)
meters
3
/ hour = 0.22713 x US gallons / minute
Pounds / inch
2
(psi) = 14.696 x atmosphere (ATM) US gallons / minute = 264.18 x meters
3
/ minute
Pounds per square inch (psi) = 14.504 x Bar US gallons / minute = 0.12468 x feet
3
/ hour
Technical Service Manual 9 Revision Date: August 2004
A - CONTROL SYSTEM OPERATION
OVEN CONTROL SYSTEM OVERVIEW
For discussion here, the Oven Control System will be divided into five parts:
• Power Distribution Overview
• Computer and Controller Overview
• Conveyor Control Overview
• Fan Control Overview