Siemens Maxum II - Page 82

Ch2
Ch1
Low Pressure
Switch Inputs
Location ID
Selector Switches
I
2
C Connector
Tubing Manifold
Figure 2-42 EPC Module Connections
Mechanical
The EPC is mounted
to right side wall of the
Electronic Enclosure.
Up to four (a total of 8
EPC channels) can be
installed in a single
Electronic Enclosure.
The EPC is easily field
replaceable using
common tools.
EPCs mounted on
right-hand wall of
analyzer
EPC Location In Analyzer
Electrical
The EPC is made up of a printed circuit board with two pressure transducers, two proportional
valves with associated electronic circuitry, manifold for pneumatic connections, and a
connector for I
2
C communication signals and DC power.
The EPC provides electrically controlled pressure for helium, hydrogen and nitrogen carriers
etc., as well as low flow and low pressure (<100psi) applications such as flame detector fuel.
The EPC operates from 24VDC at 4 watts. Electrical connections are made using plug type
connectors.
Electronic Compartment Component Descriptions and Maintenance Procedures
2.9 Electronic Pressure Control Module
Maxum II Reference Manual
82 Manual, 7/2017, 2000596-001