Owner`s manual

Computer Control Startup
16
Belt Speed Calibration
CLOSED LOOP SINGLE BELT
Place an object on the belt. Time its passage from
entrance to exit. If the actual speed is not within ¦
10 seconds of the setpoint calibrate a s follows.
NOTE: Measure the leading or the trailing edge in
and out. Do not use the leading edge in
and the trailing edge out.
To enter the calibration m ode:
1. Press the ON/OFF key until OFF is displayed.
2. PressCLEAR123456ENTER.Thedisplay
reads ACCESS.
3. Press CLEAR TIME TIME TIME ENTER. The
display flashes INIT.
Belt speed calibration:
NOTE: Use the data from the table below to pro-
gram the following parameters.
1. OVEN LENGTH --- enter the conveyor length.
2. MOTORRATIO---setthemotorgearratio.
3. SHAFT TEETH --- set the shaft teeth number.
4. MOTOR TEETH --- set t he motor teeth number.
5. BELT RAD I US --- set the belt radius.
NOTE: Belt radius values given are estimates.
If you re-enter the calibration mode af-
ter setting the belt speed, the belt ra-
dius may differ from the table.
6. The display gives a four digit value followed by
the letter K. Press ENTER twice to verify the
belt speed.
Belt speed verification:
a.) ENTER TEST TIME --- Enter a test time.
The default is 7 minutes.
b.) WAIT --- 1 second delay.
c.) ENTER ACTUAL TIME --- Place an object
on the belt. Time its passage from en-
trance to exit. Enter the actual time.
d.) ENTER TEST TIME --- If the actual time is
not ¦ 5 seconds of the test time, repeat
the belt verification test for better accura-
cy. If the actual measured time is accept-
able, press the CLEAR key to continue
with belt speed calibration.
7. MAX/MIN CALC TIME --- The control deter-
mines the fastest and slowest programmable
cook time. This requires a 1 minute delay.
NOTE: If the control cannot read the shaft en-
coder the display reads ERROR then
ABORT before exiting belt calibration.
Verify the connection of the encoder
Restart belt speed calibration.
8. The display flashes MIN SET TIME? Press the
PROG/ENTER key to display the calculated
minimum set time. Press the PROG/ENTER
key to accept this value.
9. The display flashes MAX SET TIME? Press the
PROG/ENTER key to display the calculated
maximum set time. Press the PROG/ENTER
key to accept this value.
10. The display reads DONE.
To save the new belt speed:
1. Press ENTER to save the belt speed calibra-
tion program in the control’s memory.
Model
Oven Length Motor Ratio Shaft Teeth Motor Teeth Belt Radius
MT1828 28 600 24 24 7,209
MT2136 36 600 15 12 8,712
MT3240 40 600 15 12 8,893
MT3270 70 600 15 12 8,712
MT3855 55 600 15 12 8,712
MT3870 70 600 15 12 8,712
MT3870
Ta n dem
176 180 19 15 8,712