Pressure Controller/Calibrator
Theory of Operation
13
Electrical
Figure 3 shows the electrical power distribution inside the Product chassis.
24 V dc power is the primary power distributed inside the chassis. Each module
uses the 24 V dc power to create the specific voltage supplies required. Each
module is isolated or filtered to provide appropriate power for the module
requirements.
RS-232 / GPIB/
USB Device / Ethernet
CANbus
Main Processor
Back Panel
Manifold PCAs
Drivers:
4 External
Drivers:
14 External
Switch In /
Ext.Drivers
AC Power
Entry Module
Fused
MOV
ac / 24 Vdc
110 Watts
24 Vdc
24 V / 5 V /
3.3 V
Iso 24 V / 12 V
LCD / Touch / Keypad
Chassis Power
PMM PCM ... x5
μP
Front Panel Process
CANbus /
ID pin
iso
PCA
1/2 W sol.
Driver
A/D
Filtered
24 Vdc
Valves
P
Sensor
P
CANbus / ID Pin iso
24 Vdc to 5/12/-12 Vdc
Switch
P
P
hxn308.eps
Figure 3. Electrical Block Diagram
To Next Page
Loading...
