Safety is key February 1st 2011 Fortress Interlocks has integrated a
key switch function into key
exchange units, making it possible
to isolate the power and release
access keys in one operation.
Using the XMR unit, separate key
transfer between an (isolation) key
switch and key exchange unit is no
longer needed, safeguarding
potentially dangerous machines and
areas with multiple access doors.
By turning the first key of the
XMR the safety contacts are broken,
isolating the machine power. This
key is then trapped and the other
access keys can then be used to open
the door locks allowing access to the
safeguarded areas. Only when all
keys are returned to the XMR can
the machine be restarted.
The XMR is available in different
switch currents and switch contacts.
Besides the standard back of board
version an enclosed version (IP67)
is available.
The XMR and other Fortress
products are suitable for use in high
risk SIL3, PLe and Cat. 4
applications.
For more information about the
XMR key exchange unit, please visit
the company website at
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