Installation manual

105U-L Wireless I/O Installation Manual
105U-L Wireless I/O Page 34 of 38
Version 1.9
Testing your units
We recommend you bench test the complete system before installing a new system.
Configuration problems are easier to identify and fix when the units are next to each other.
The following table describes common problems and recommended solutions:
If your installation has  You should check  ELPRO recommends 
Poor radio channel
communications
• TX LED flashes but no RX LED
• Output LEDs flash quickly
• The antenna installation.
• For radio interference on the
same channel.
• The radio path is adequate.
• Higher performance antennas
if the path is too long.
• Higher mounting points to
overcome obstructions.
• Using an intermediate unit as a
repeater.
Red OK LED
• Power Supply voltage • Supply should be between 9
and 30VDC.
• Analog loop supply current • The analog loop supply is rated
for 35 mA max.
• Module configuration • Your module configuration may
be invalid. Re-load or restore
factory default configuration.
TX LED flashes but no RX LED
(bench testing)
• Ensure the 105U-L-R is set
to the same country and
frequency band as the
105U-L-T
• Register the receiver with the
transmitter. (Refer to the Quick
Start Guide)
RX LED Flashes but no outputs
change
• For a user-defined
customized configuration, -
check the configuration.
• Check the configuration and
re-program the modules.
• For default configuration,
check the receiver is
registered with the
transmitter.
• Repeat the procedure to
register the receiver with the
transmitter.
For support for other testing issues, please contact ELPRO.