Function blocks
Function blocks for TwinSAFE logic components 79
KL6904
The Muting function block is not available in the KL6904.
3.8.2 Signal description
Table 3-43: FB MUTING inputs
TwinSAFE-In
FB-Out
Standard-In
Muting can be activated via the Enable input. If the input is
logic 0 an interruption of the protective device results in
immediate shutdown of the FB output.
The muting inputs are used to verify that they are operated in
a defined order.
1st input channel. The parameterization is used to specify
whether the input has to be negated or is used directly.
2nd input channel, behaves like MutingIn1
If the discrepancy time is not equal 0, the 1st and 2nd input
channel are considered to be the 1st input group and a
discrepancy time monitoring is carried out between both
channels, if one of the two input channels requests the safe
state
3rd input channel or 1st input channel of the 2nd input group,
otherwise corresponds with MutingIn1
4th input channel or 2nd input channel of the 2nd input
group, otherwise corresponds with MutingIn2
TwinSAFE-In
FB-Out
Standard-In
EDM1 is the feedback loop for the output channel (MuteOut),
which is switched off immediately. If this input as activated,
the safe output state is only exited when EDM1 is set to 1.
TwinSAFE-In
FB-Out
Standard-In
EDM2 is the feedback loop for the output channel
(MuteDelOut), which is switched off with a delay. If this input
as activated, the safe output state is only exited when EDM2
is set to 1.
The protective device (AOPD - Active Opto-electronic
Protection Device), for example a light curtain, is connected
at the 'OSSDIn' inputs.
1st input channel. The parameterization is used to specify
whether the input has to be negated or is used directly.
OSSDIn2 is the 2nd channel for the protective device and
otherwise matches OSSDIn1
If the discrepancy time is not 0, the 1st and 2nd OSSD inputs
are considered as an input pair. Discrepancy time monitoring
between the two channels is active if one of the two input
channels requests the safe state.