User manual

Chapter Two Installation
Page 15 March 2010
2.3 Power Supply
The WI-MOD-9-E module can be powered from a 10 - 30VDC power supply. The power supply
should be rated at 1 Amp and be CSA Certified Class 2. The negative side of the supply should
be connected to a good “ground” point for surge protection. The supply negative is connected to
the unit case internally.
The positive side of the supply
must not be connected to earth. The
DC supply may be a floating
supply or negatively grounded. The
power requirements of the WI-
MOD-9-E unit is 280mA @ 12V or
150mA @ 24VDC. This is
inclusive of radio and Ethernet
ports active & serial port plugged
in. Transmission current (1W RF) is nominally 500mA at 12V, 250mA at 24VDC.
A Ground Terminal is provided on the back of the Module. This Terminal should be connected
to the Main Ground point of the installation in order to provide efficient surge protection for the
Module (Refer to the Installation Diagram)
2.4 Serial Connections
2.4.1 RS232 Serial Port
The serial port is a 9 pin DB9 female and provides for connection to a host device as well as a
PC terminal for configuration, field testing and for factory testing. The WI-MOD-9-E is
configured as DCE equipment with the pinouts detailed below.
WI-MOD-9-E
DB9
MALE
DTE HOST
DB9
FEMALE
WI-MOD-9-E
DB9
MALE
DCE HOST
DB9
MALE
Hardware handshaking using the CTS/RTS lines is provided. The CTS/RTS lines may be used to
reflect the status of the local unit’s input buffer, or may be configured to reflect the status of
CTS/RTS lines at the remote site. The WI-MOD-9-E does not support XON/XOFF.
+
_
B
A
-
+
COM
DIO
WI-MOD-9
10-30
VDC
RS485
SUPPLY