Weidmuller WI-I/O 9-K: Wireless I/O Transmitter v1.9 - Manual (Page 8)

WI-I/O 9-K v1.9
Page 8
1 OVERVIEW
Note: Please refer to separate User Manuals for the WI-I/O 9-1,2,3,4 products.
The WI-I/O 9-K product will be referred to as the “WI-I/O K” for the rest of this manual to
clearly delineate it from the other WI-I/O 9-1,2,3,4 products.
The WI-I/O K radio telemetry module is an economical solution for the remote monitoring of
process signals. The WI-I/O K can connect to digital, pulse or analog signals from process
transducers, and transmit these signal values by radio.
Although the WI-I/O K is intended to be simple in its application, it also provides many
sophisticated features. This manual should be read carefully to ensure that the modules are
configured and installed to give reliable performance. The WI-I/O K has been designed to use a
European licence-free radio band at 869MHz. The WI-I/O K uses the 869MHz WI-I/O 9-x
module as a receiver, or repeater. If you have not used WI-I/O 9-x modules before, please read
the WI-I/O 9-x User Manual prior to reading this manual.
The WI-I/O K module is a monitoring only unit - that is, it will only accept input signals and
does not provide output signals. The WI-I/O K has an internal radio transmitter; it does not have
a receiver to receive messages from another module.
The WI-I/O K transmits the value of an input signal whenever the signal changes, and also after a
pre-configured time. Each transmission message includes error-checking to confirm the validity
of the message. At each transmission, the WI-I/O K may be configured to repeat the
transmission several times to ensure that the transmission is received correctly. This is important
if the radio path is marginal (that is, the radio signal is not strong) or if there is a lot of radio
traffic on the radio channel which may corrupt the WI-I/O K message. The WI-I/O K transmits
the input message to a WI-I/O 9-x module, which sets an output signal to be the same value as
the WI-I/O K input, or the WI-I/O 9-x passes the input message to another device (PC or PLC)
via its serial port.
For more information on the WI-I/O 9-x module, please refer to the WI-I/O 9-x User Manual.
The WI-I/O K has a heavy duty painted aluminium enclosure, weather-proofed to NEMA 4 /
IP66, except in Class 1 Div 2 areas. Signal and power connections to the unit are made via a
weatherproof connector at the bottom of the module. Antenna connection is made using a SMA
coaxial connector at the top of the module. Signal and antenna connections should be wrapped
with waterproofing tape to ensure weatherproof integrity.
In North America, the WI-I/O K is approved for use in Class 1 Division 2 areas.
1.1 Input Signals
The WI-I/O K module provides two digital/pulse inputs and one analog input for connecting to
process transducers.