480 Volts And Lower Installations - Trane Symbio CVRF Installation Instructions Manual

The meter is connected to Modbus communications and is
self-powered by the unit voltage potential inputs. Review meter
literature for setup and operation details.
Modbus communications is by shielded 14 – 26 AWG cable
from meter to Symbio™ module. Please install 120 OHM
resistors at first and last modules on Modbus daisy chain.
Figure 35. Modbus communication
+
–
S
Shielded Wire
120 terminators on the first/last devices of daisy Ω
The communications wiring will be terminated at the Modbus
distribution terminal (1X3) beside Symbio™ 800 using the 3
poles connector which provide in energy meter kits.
Figure 36. Distribution terminal
CVRF-SVN005C-EN
chain
Figure 37. Modbus wiring, ref. 50712738
OPTIONAL
ENERGY METER
LINE 52
OPTIONAL
4Y1
WI-FI
ANTENNA
OPTIONAL

480 Volts and Lower Installations

POTENTIAL INPUT – Install provided fused inputs to line
voltage per schematic.
CURRENT INPUT – Install provided Rogowski CTs per
schematic.
Figure 38. Rogowski CTs
Installation
RED
1X3-1
BLK
1X3-2
BLU
1X3-3
IMC
A G
- + - + -
P1 P2
BACKNET MODBUS
1A22 SYMBIO800 UNIT CON
+
29