cal pressure
1 Used to set the system pressure according to the internal pressure sensors.
2 Used to set the calibration factor of internal pressure sensors.
3 Use to test the customer air supply.
4 Used to cross calibrate sensors.
1) Cal pressure will instruct the user to turn off the system air pressure at the
filter regulator unit, when it has sensed the pressure low and stable it takes
a reading of the sensor zero pressure value and this becomes the offset saved in
al aoff [] array. The user is then asked to turn the pressure on and adjust it
down to 3 psi lower that the set point. This is because a regulator must always be set
by adjusting upwards and never backed off, to achieve accuracy. The user is then
asked to increase the pressure slowly until the pressure reaches the set point for
the machine, at which point the instruction will change from "adjust up" to "HOLD".
The firmware will then check that the pressure is stable and within tollerance.
Machines with a beeper will beep faster as you approach the ideal set point and then
stop beeping.
The set point for TSVLF AL is 84 psi and the customer machine spec into the machine
is 90 psi (621 KPa) at the same time as 20 cfm (66 l/m) is flowing.
Cal Pressure sensor: For Autoloader.
2) New method using Omega pressure transducer. This is a startup command and requires a
service tool 90-1189A. This tool must be marked with a calibration code.
Connect Omega calibrated pressure transducer to J3 of Picker Genine.
This is a startup command and requires a precision digital pressure meter which is
used to calibrate the main (ese) and picker pressure sensors (TSVLF AL).
Uncalibrated sensors may be up to 5 psi out. If a pressure sensor is replaced or
a Genine is replaced (TSVLF AL) then it may be neccessary to recalibrate one or both
sensors.
Sensor or board replacement. & Cross calibrating sensors.
Applies mainly to (TSVLF AL). If a machine was running with main and picker pressure
sensors and either a sensor or picker genine gets replaced then it is possible to
calibrate the new sensor to match the remaining sensor, assuming that the remaining
one is still accurate. (It is preferable to check this with a digital pressure
meter) or Omeger transducer. 'cal pressure sensor picker [password]' will adjust
the picker sensor scale
factor so that it reads the same as the main sensor. Use this when replacing the
picker pressure sensor or picker genine.
'cal pressure sensor main [password]' will adjust the main sensor scale factor so
that the mains reads the same as the picker. Use this when replacing the main sensor
or engine satellite board.
3) A rough test of the adaquicy of he customer's air supply can be done using
cal pressure flow on/off. This will bleed air at approx 20 cfm but anyway at the
peak flow required by that specific machine and firmware. The machine must be
fitte with a gauge BEFORE the regulator. You must read at least 90 psi all the time
for 2-3 minutes while cal pressure flow is on. Try this several times through out
the shift or for a longer period of time.
Trendsetter_VLF_Auto
cal pressure
cal pressure sensor <pressure psi> <access code>
cal pressure sensor ref
cal pressure sensor picker
cal pressure sensor main
cal pressure flow on|off
'al aoff 1' is the main system pressure offset and 'al aoff 5 is the TSVLF AL picker
pressure offset. The nvs al aoff is not editable.
A number relating to the scaleing factor is saved in 'al ppsc' and 'al mpsc' which
are not editable.