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Planning and
Installation Guidelines
V 6
Technical Description
3.9 Antennas and antenna cables
Wireless Proximity Switches / Issue: 09.2004
Setting of the master password
In the set main menue, input of an eight-digit master-password is offered as last menu option.
This option can be used only by system specialists of ABB. It serves to allow system access
again, if the set three-digit user-password has been forgotten by the user.
The setting is handled according to the same principle as with the setting of the user-password.
Communication between the input module and the configured wireless proximity switches is
performed via a pair of antennas where one antenna has right-handed and one has left-handed
circular polarization.
The antennas are labeled beside the socket for the antenna cable with the letter „R" for right-
handed circular polarization and/or „L" for left handed circular polarization.
Both antennas are working alternating as transmitting and receiving antennas.
Each antenna is connected to the input module by a separate up to 5 m long coaxial cable.
In order to obtain as good as possible connection between the antennas and the wireless
proximity switches, the antennas should be mounted above the machine or manufacturing cell in a
way that they can cover all configured proximity switches with their main radiation direction,
similar to a lamp.
One pair of antennas should be mounted with a distance of 0.5 m to each other.
It is not necessary to have direct line-of-sight connection to the antennas for all proximity switches.
The distance between the antennas and wireless proximity switches should be between 0.5 m
and 5 m.
If two pairs of antennas are mounted in an installation, they should not be positioned opposite
each other or only with a minimum distance of 5 m.
Planning and Installation Guidelines
35
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