
Pressure
Controller/Calibrator
Theory of Operation
15
PCA Overview
Main PCA
- This PCA manages system functions, contains all external
communication ports, all system configuration settings, and is the central PCA for
internal chassis communications. The main PCA is powered by 24 V dc from the
main power supply. There is no calibration data stored on this PCA.
LED indication (located on the main PCA, near the main processor):
•
Application running - pause, blink, blink at 0.6 second intervals
•
Application not Running - full on or full off
•
Operating system/firmware - kernel and main firmware.
Touchscreen PCA
- This PCA works with the touchscreen. The touchscreen
and display are factory aligned.
Solenoid Driver PCA
- This PCA interfaces through the canbus with the main
processor and modules. This PCA manages the solenoid drivers for isolation
valves in the main chassis and is the input point for the module bay open/closed
switch.
LED indication (located on the solenoid driver PCA which is on the PCM dock
manifold):
•
Application running - on/off, blink at 1 second intervals
•
Application running - no communication - on/off, blink at 2 second intervals
•
Downloading or no application loaded - pause, double blink
•
Not functioning - full on or full off
Solenoid Driver PCA – PMM block
- This PCA is an extension from the PCM
solenoid.
PM200 PCA
- Pressure measurement PCA. Calibration data is stored on this
PCA.
LED indication (located on the PM200 module PCA - visible when you service
the PM200 module):
•
Application running - on/off blink at 1 second intervals
•
Application running, no communication - on/off blink at 2 second intervals
•
Downloading or no application loaded - pause, double blink
•
Not functioning - full on or full off
PM600 PCA
- Same PCB as the PM200 but includes a barometric sensor.
Содержание 6270A
Страница 5: ...Contents continued iii Inspect and Replace the CPS valves 122 Replacement Parts 124 Screw Torque 136...
Страница 6: ...6270A Service Manual iv...
Страница 26: ...6270A Service Manual 20 2 1 3 hxn212 eps Figure 7 PMM and PCM Removal...
Страница 30: ...6270A Service Manual 24 1 2 3 hxn205 eps Figure 9 Manifold Installation...
Страница 32: ...6270A Service Manual 26 2 1 1 hxn202 eps Figure 10 Remove Feet and Tilt Stands...
Страница 37: ...Pressure Controller Calibrator Module Guide Rails 31 1 2 3 hxn209 eps Figure 13 Remove Module Guide Rails...
Страница 40: ...6270A Service Manual 34 hxn208 eps Figure 16 Remove the CPU...
Страница 43: ...Pressure Controller Calibrator Module Guide Rails 37 8 9 10 hxn219 eps Figure 18 Dock Assembly...
Страница 47: ...Pressure Controller Calibrator Module Guide Rails 41 2 3 1 4 6 7 5 8 hxn215 eps Figure 21 Remove B Series Valve...
Страница 53: ...Pressure Controller Calibrator Power Supply and Fan 47 3 1 2 4 hxn221 eps Figure 25 Remove Power Supply...
Страница 64: ...6270A Service Manual 58 1 2 3 4 5 7 6 hxn210 eps Figure 32 Remove Latch Assembly...
Страница 67: ...Pressure Controller Calibrator PCM Assembly 61 2 1 hxn401 eps Figure 34 Module Components...
Страница 138: ...6270A Service Manual 132 9 2 5 18 7 9 8 2x 9 5x 3 4x 4 3x 7 2x 11 12 13 6 10 hxn509 eps Figure 56 PMM CAL KIT 20M Parts...