Madell Technology Corporation TYR108C Manual - Madell Technology, Corp.
Madell Technology, Corporate Office, 1141 E Philadelphia Street, Ontario, CA 91761
t. 877-670-9023 f. 909-418-6956
Website:
www.madelltech.com
; Technical Service Email: info@madelltech.com
9
Madell Technology, Corp.
15.
PV
SV
[
⌒
]
↓↑
[A/M]
16.
PV
SV
[
⌒
]
↓↑
[A/M]
!!! Caution
In order to ensure quick cooling, two-segment cooling is set for the temperature control curve
in this programmable instrument, so the user must complete the following operation. That is: after
the “maximum temperature” of this program is set, there must be and are only two segments of
program that are not edited. Press [
⌒
] key to set the target temperature as 50°C, running time as
3 seconds and PID group number as 8 for the next segment of program; and then press [
⌒
] key
to set for the next second segment of program the target temperature as 25°C, and running time
as (3.00 minutes for leaded and 3.30 minutes for lead-free; when the maximum temperature is
higher than 250°C, the cooling time is extended accordingly. Under the condition ensuring that
the hands can’t be scalded during removal of PCB, the shorter the cooling time is, the higher the
production efficiency is. Normally, removal of PCB can be carried out at about 80°C.) The PID
number is set as 8.
For example, this program is leaded curve, so the total number of segments aSNO is set as
10, the maximum temperature is 220°C that must be set at the segment 8. And then press [
⌒
]
key to set for the segment 9 the target value as 50°C, the time aTmm as 3 seconds and the PID
group number as 8; press [
⌒
] key again to set for the segment 10 the target value as 25°C, the
time aTmm as 3.00 minutes and the PID group number as 8.
4.3 Programming Example
4.3.1 Design Idea
Now, we program the first curve, taking the leaded curve as an example (maximum 8 pieces
of curve can be stored in this instrument).
Understand the process requirements of the set process curve first, and then according to
the control requirements, estimate the number of program segments to be used, each of which is
actually a reference point selected on the process curve. Commonly, on the basis of meeting
soldering requirements, the fewer the program segments used are, the faster the programming is
and the higher the working efficiency is. However, the more the program segments used are, the
more accurate the control is and the more the set process curve approaches the ideal curve. If
the requirements are not very high, the soldering effects are almost the same for different number
of program segments. So, we generally select 8-12 segments. After the number of control
segments is selected, we estimate the temperature rise status at each segment according to the
aON2
l
aOF2
m
aOF2 denotes when the second group of alarm stops at this segment; ‘m’ is
the set time value when the alarm stops at this segment, and the unit is
second, but minute for the carry digit from 60. We generally set ‘m’ as the
cooling time at the last segment minus 2 seconds (in general, 2.58 for leaded
and 3.28 for lead-free; when the maximum temperature is higher than 250°C,
total cooling time can be extended according to practical situations and then
we can calculate the ringing prompting time by subtracting 2 seconds from
the total time.)