EN
14
7. Adding an FIMER weather station
FIMER’s VSN800 Weather Station must be wired to the
Primary RS-485
port on VSN700-03 (Commercial version). Weather stations
are not supported by VSN700-01 (Residential version). Weather stations can be attached to any port configured for Modbus RTU on
VSN700-05 (Max version).
1. Connect shielded twisted-pair wire to the RS-485 terminals on the weather station. Use RS-485 data wire with one twisted pair, one
ground conductor, and a shield with drain wire (Belden#3106A or equivalent).
NOTE –
D
DO NOT USE CAT5/6 CABLE FOR THE RS-485 DATA WIRE.
2. Connect the other end of the shielded twisted-pair wire to the Primary RS-485 terminals on the data logger. Use the table below and
the figure on the next page to make the proper connections.
RS-485 Screw Terminal
1 2 3 4 5 6
RS-485 and Power
Connections
Data Logger RS-485 Screw
Terminal Connector
Example Inverter
RS-485 Pin Label
Example VSN800-XX
RS-485 Pin Label
RS-485 Negative (-)
1
-T/R
----
RS-485 Positive (+)
2
+T/R
----
RS-485 Negative (-)
3
----
RS-485 A(-)
RS-485 Positive (+)
4
----
RS-485 B(+)
DC Ground
5
RTN
RS-485 GND and GND
VDC+ Power Only
6
----
24VDC
3. The VSN800 Weather Station can tap the power terminals on the data logger for its power source. Tapping off the data logger’s power
source is optional; any appropriate DC power source that meets the specifications of the weather station may be used. To use the data
logger’s power source for the weather station, connect shielded twisted-pair wire to the power terminals on the weather/environmental
station. For distances less than 400 feet between the data logger and the weather station we recommend using #22 AWG stranded
copper wire. For longer distances use a heavier gauge wire. Consult the VSN800 Weather Station datasheet for the minimum required
voltage and maximum allowed wire gauge. If unable to meet these specs because of voltage drop then a separate power supply closer
to the weather station must be used.
NOTE –
D
DO NOT USE CAT5/6 CABLE FOR THE POWER WIRES
.
Содержание VSN700
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