20
Installation OZD Profi 12M ...
Release
01
07/2017
1.4 Display elements
LED Color Meaning
System green lights up The transmission rate has been recognized and the
power supply is in order
Signal contact: no signal
red flashes Transmission rate has not yet been recognized
– No transmitting bus subscriber present
– No connection to a partner repeater sending frames
– Send and receive optical fibers have been
transposed.
– Transmission rate does not correspond to
PROFIBUS-DP.
– Only one active bus subscriber is connected, which
is only sending tokens to itself. The indicator must
switch over after a second bus subscriber has been
activated (token frames on their own are not enough
to set the transfer rate).
– The connected RS 485 segment is only terminated
at one end.
Signal contact: no signal
red/green flashes Transmission rate recognized but
– the network slot time could not be determined
(network parameter HSA is set too low, no
transmitting bus subscriber present)
– one optical port is set to ”Redundant optical ring“
mode, but not the second (this operating mode must
always be set at both optical ports)
– the slot time of the network configuration is too short
Signal contact: no signal
none – Power supply has failed (total failure). Failure of
both power supply sources with redundant infeed.
– Power supply connected incorrectly
– Repeater defective
Signal contact: signal
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