User manual

905K Radio Telemetry Module User Manual
 ELPRO Technologies Pty Ltd 2010 Page 4
Important Notice
ELPRO products are designed to be used in industrial environments, by experienced industrial
engineering personnel with adequate knowledge of safety design considerations.
ELPRO radio products are used on unprotected license-free radio bands with radio noise and
interference. The products are designed to operate in the presence of noise and interference,
however in an extreme case, radio noise and interference could cause product operation delays or
operation failure. Like all industrial electronic products, ELPRO products can fail in a variety
of modes due to misuse, age, or malfunction. We recommend that users and designers design
systems using design techniques intended to prevent personal injury or damage during product
operation, and provide failure tolerant systems to prevent personal injury or damage in the event
of product failure. Designers must warn users of the equipment or systems if adequate protection
against failure has not been included in the system design. Designers must include this Important
Notice in operating procedures and system manuals.
These products should not be used in non-industrial applications, or life-support systems,
without consulting ELPRO Technologies first.
1. For 905U modules, a radio licence is not required in many countries, provided the module
is installed using the antenna and equipment configuration complying with the country’s
regulations.. Check with your local distributor for further information on regulations.
2. For 905U modules, operation is authorised by the radio frequency regulatory authority in
your country on a non-protection basis. Although all care is taken in the design of these
units, there is no responsibility taken for sources of external interference. The 905U
intelligent communications protocol aims to correct communication errors due to
interference and to retransmit the required output conditions regularly. However some
delay in the operation of outputs may occur during periods of interference. Systems
should be designed to be tolerant of these delays.
3. To avoid the risk of electrocution, the antenna, antenna cable, serial cables and all
terminals of the 905U module should be electrically protected. To provide maximum
surge and lightning protection, the module should be connected to a suitable earth and the
antenna, antenna cable, serial cables and the module should be installed as recommended
in the Installation Guide.
4. To avoid accidents during maintenance or adjustment of remotely controlled equipment,
all equipment should be first disconnected from the 905U module during these
adjustments. Equipment should carry clear markings to indicate remote or automatic
operation. E.g. "This equipment is remotely controlled and may start without warning.
Isolate at the switchboard before attempting adjustments."
5. The 905U module is not suitable for use in explosive environments without additional
protection.