Southern Hemisphere Adjustment; Connect To The Monitoring Or Management System - ABB VSN800 Product Manual

3.
Power Supply Terminals
Earth Gnd:
Gnd:
24VDC
VSN800-14
4.

Southern hemisphere adjustment

For the VSN800-14 model, if you are in the southern hemisphere, the jumper at J11 must be
set to Southern. If you are in the northern hemisphere, no adjustment is required. J11 is
located in upper left section of the circuit board.

Connect to the monitoring or management system

The Modbus (RS485) connection is same as with any other RS485 device connected to a
SunSpec-compliant management system. Refer to your management system documentation
of any unique installation requirements.
1.
2.
Flip the unit over and remove the cover. Find the 24VDC power connectors on the
electronics board in the case. Connect power to the 3-pin screw terminal inside the
connection case.
The power supply is nominally rated for 24VDC but can accept a voltage in the range
of 10 to 30VDC. The inputs are reverse polarity, surge, over-voltage, and over-current
protected. The power supply is not isolated.
24VDC Connectors:
Earth GND
GND
24VDC Power
Weather Station Electronics Board
Leave the case open to install the other wires as described in the next section.
String cable between the weather station and the management system to complete
the physical connection. The connection to the management system can be as a
single RS485 device or as part of a daisy chain of RS485 devices. Cable is not
supplied with the unit. Use twisted pair wire for connections.
Wiring connections are made using the 3-pin screw terminal inside the connection
case. See the figure below.
VSN800 Weather Station Product Manual
Earth or Chassis Ground
Negative Supply Voltage
Positive Supply Voltage
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VSN800-12