Chapter Two
Installation
Page
15
2.3
Power Supply
The WI-MOD-9-D module is powered by a 10 - 30VDC or 13 – 24VAC supply. The power
supply should be rated at 1 Amp and be CSA
Certified Class 2.
For DC supplies, the negative side of the
supply is connected to "COM" and may be
connected to “ground”. The supply negative is
connected to the “GND” terminal 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-D
units is 80mA at 12VDC or 50mA at 24VDC.
The power requirements in low power mode is
20mA at 12VDC.
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. This port is internally shared
with the RS485 - ensure that the RS485 is disconnected before attempting to use the RS232 port.
Communication is via standard RS232 signals. The WI-MOD-9-D is configured as DCE
equipment with the pinout detailed below.
WI-MOD-9-D
DB9
MALE
DTE HOST
DB9
FEMALE
WI-MOD-9-D
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-D does not support XON/XOFF.
WI-MOD-9-D
10 – 30 +
VDC -
+
-
WI-MOD-9-D
13 - 24
VAC
+
-
