J7 TOTALFLOW Products

NOTES:
1. WARNING: This drawing does not illustrate the
installation methods required for hazardous
locations. Prior to any installation in a Classified
Hazardous Location, verify installation methods by
the Control Drawing referenced on the product’s
name tag and national and local codes.
2. To access the XMV termination board, remove
the enclosure rear cover.
3. For RTD installation, remove jumpers from XMV
terminals 11-12, 13-14 and the 178Ω resistor from
terminals 12-14.
4. The RS-485 buss must be wired in a daisy-chain
configuration. Star configurations are not allowed.
5. Maximum accumulated length for the RS-485 buss
is 4000 feet.
120Ω – 250Ω Resistor
The last XMV on the buss should be
terminated with this resistor jumpered
across the COMM + and COMM –
terminals (the 178Ω resistor discarded in
Note 3 is acceptable for this termination).
RS-485 Communications Module
Totalflow P/N 2015193-002/003
In this configuration, COMM1 may not be used to
communicate with other devices. To attach other
devices, such as other flow computers, use COMM2
ABB XMV
267/269CS
ABB XMV
266CS
3
178Ω Resistor
To terminate the Buss on the XRC
Board, jumper J7 Pin-1 to Pin-2
1
RS-485 Cable Entry
(Wiring Diagram is
shown outside of
conduit for clarity)
J7
9
J18
DISPLAY
5
2
1
J15
MMI
BATT
BUS +
BUS VBATT
3
3
J17
1
1
COMM 1
J4
J6
SHLD GND
RS-485 Cable,
6-Conductor
P/N: 2011648001
J6A-6 BUSJ6A-8 BUS+
1
COMM 2
XA2
34
33
1 XA1
J7
U8
PROM
GND
COMM2 COMM1 J6A-1 VBATT
1
J6A-2 GND
9
DIGITAL I/O B
BLK
BLK
WHT
WHT
FLASH
ON
SEE
NOTE 3
+
CHARGER INPUT
J10
U1
J19
KEYPAD
-
J16
6
I/O EXP
J13
+
14
13
U7
SRAM
2
1
1
-
A
SECURITY
J8
S1
OFF
(-)
XRC Board
2100355
AUXPWR OUTPUT
XBT1
RTD Probe
P/N 2011905
Connect the Shield GND from the RS-485 cable at the
enclosure end of the cable to the Chassis GND Lug
located on the bottom of the enclosure. For every other
RS-485 cable to an additional device, attach Shield
GND to Shield GND. DO NOT ground at any other
place.
J20
(+)
J23
1 2 3 4 5 6 7 8 9 10
TOTALFLOW
Products
ACTION
DOC TYPE
L34451
UD
TITLE
XRC G3 (2100355 BOARD) COMM1 (RS485) TO ABB 267CS & ABB 266CS W/RTD
DWG NO.
REV
2105114
AA
SHEET
1
OF
1

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