Section 4: Typical External Diagrams; Figure 10: Central Controller Communication Equalization Wiring - Roberts Gorden UltraVac NEMA 4 Installation Manual

SECTION 4: TYPICAL EXTERNAL DIAGRAMS

FIGURE 10: Central Controller Communication Equalization Wiring

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.
Communications Circuit Equalizer Wiring
(included, must be field installed)
8
-
Description
Comms Equalization Cable
Shrinkwrap
OUT IN G +32 +5 G G G
RS232 DIRECT
AUX POWER
UNIVERSAL INPUTS
7 6 5 4 3
+ - + - + - + - + -
Part Number
10080450
This connector will plug into the right set of
RS-485 +/- terminals on this board as shown.
120 ohm resistor (included w/ P/N 100800450)
- + - + - + - +
REF REF
OUT IN 4 3
RS485 COMM METER INPUTS
RESET
ADDRESS
CPU
2 1
+ - + - +
OUT
IN
OFF
ON
SECTION 4: T
YPICAL
- + - +
2 1
OH CD RI
4
3
2
1
499 OHM
10VDC
E D
XTERNAL IAGRAMS
15