Emerson Process Management CFA-3000 TV Converter Box User Manual


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CFA3000 MANUAL SECTION 7
INSTRUMENT DESCRIPTION
Part Function
Keypad Panel Door Opens to access card
cage
Display Board Circuit board contains
electronics for keypad
and LCD display
CPU Board
180B02801
Central processing circuit
board processes the
signal fed to the digital
display and any external
devices. (Yellow ejector)
Valve Board
180B01601
(only supplied for
multistream option or for
RS232 output on single
stream)
Circuit board controls
multistream accessory.
Jumper should be
installed on back of valve
board. (Purple ejector)
Analog Board
180B02502
For multistream
configurations:
180B02501*
Circuit board converts
signals from analog to
digital and processes
signals from "fault" detec
tors (Orange ejector)
Power Supply Board
180B01203
Supplies voltage to
electrical circuitry
(Blue ejector)
7.3 Card Cage
The card cage is located directly behind the keypad
panel. To access the card cage, lift latches from right
side of keypad panel and open hinged door. (Refer to
Figure 72.)
7.3.1 Card Cage and Door
Table 74: Card Cage Parts
Component Function
0Vdc  5Vdc Connector To recording device.
4mA –20mA Connector To recording device.
Computer Memory Reset Clears microprocessor
memory
Computer Memory Reset Clears microprocessor
memory
Valve Pump Connector Connector for cable from
valve pump
Display Board Cable
Connector
Connector for display
board cable
Component Function
Potentiometer Adjusts sensitivity of leak
detector – clockwise for
less sensitivity;
counterclockwise for
greater sensitivity
Analog Board DIP Switch Contains 8 rocker switches
for setting various
functional processes
(see Figure 73)
Signal Input Connector For process signals
On 180B02501: 20
multistream output
potentiometers
For each stream 2 – 6,
potentiometers for 4 mA,
20 mA, 0 V, 5 V
(multistream only)
Component Function
Multistream Panel
Connector
Connector for cable
connector from display
board
7.3.2 CPU Board
Table 75: CPU Board Components
7.3.3 Analog Board
Table 76: Analog Board Components
7.3.4 Valve Board
Table 77: Valve Board Components
Part Function
18pin Female Connector For relays
6pin Male Connector Operating power
6pin Female Connector Valve Pump Power
7.3.5 Power Supply Board
Table 78 Power Supply Board
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