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SECTION 4: TYPICAL EXTERNAL DIAGRAMS
15
SECTION 4: TYPICAL EXTERNAL DIAGRAMS
FIGURE 10: Central Controller Communication Equalization Wiring
+-
1
+-
2
+-
4
+-
3
+-
5
+-
6
+-
7
+-
8
+- +-
REF
RS485 COMM
REF
+-
1
+-
2
+-
3
+-
4
METER INPUTS
UNIVERSAL INPUTS
INOUT
ADDRESS
RESET
10VDC
499 OHM
OFF
ON
OUT
IN
GINOUT GGG
+5
+32
AUX POWER
RS232 DIRECT
RI
CDOH
CPU
+-
1
+-
2
+-
3
+-
4
Communications Circuit Equalizer Wiring
(included, must be field installed)
RED
BLACK
RED
BLACK
120 ohm resistor (included w/ P/N 100800450)
Shrinkwrap
All ULTRAVAC™ Central Controllers are shipped with a communication equalization cable
(P/N 10080450). The cable is supplied to equalize and balance the circuitry of the communications on
the controller network that may be experiencing noise or transient voltage levels. Connect the communi-
cation equalization cable as shown below to the first or the last controller on the data bus.
This connector will plug into the right set of
RS-485 +/- terminals on this board as shown.
Description Part Number
Comms Equalization Cable 10080450