BECKHOFF EL6900-FB - Manual (Page 39)

Function blocks
Function blocks for TwinSAFE logic terminals 37
3.5.2 Signal description
Table 3-21: FB MON inputs
Name Permitted type Description
Restart TwinSAFE-In
FB-Out
Standard-In
The 0->1->0 signal sequence must be detected at the restart input,
during the start of the FB or when an input request the safe state, in
case a manual restart is active, before the safe state of the outputs is
exited.
This input is not used if the manual restart is inactive. Both starting and
exiting the safe state is carried out automatically, as long as no input
requests any longer the safe state.
MonIn1 TwinSAFE-In
FB-Out
1 st input channel: The parameterization determines, whether the input
is linked to a normally closed contact (Break contact – safe state will
be requested by logical 0) or normally open contact (Make contact –
safe state will be requested by logical 1).
MonIn2 TwinSAFE-In
FB-Out
2 nd input channel, behaves like MonIn1
If the discrepancy time is activated or used, the 1 st and 2 nd input
channels are considered to be the 1 st input pair and a discrepancy time
monitoring is carried out between both channels.
MonIn3 TwinSAFE-In
FB-Out
3 rd input channel or 1 st input channel of the 2 nd input pair, otherwise
corresponds with MonIn1
MonIn4 TwinSAFE-In
FB-Out
4 th input channel or 2 nd input channel of the 2 nd input pair, otherwise
corresponds with MonIn2
Secure1 TwinSAFE-In
FB-Out
If the Secure1 or Secure2 are parameterized as active, the evaluation
of the MonIn(x) inputs can be switched off. If Secure1 or Secure2 are
parameterized as normally closed contact (Break contact), the
MonIn(x) inputs are ignored if Secure1 and/or Secure2 are "1". If
Secure1 or Secure2 are parameterized as normally open contact
(Make contact), the MonIn(x) inputs are ignored if Secure1 and/or
Secure2 are "0". If the discrepancy time is activated or used, Secure1
and Secure2 are considered as an input pair and a discrepancy time
monitoring is carried out between both channels.
Secure2 TwinSAFE-In
FB-Out
Secure2 is the 2 nd channel of the input pair and otherwise corresponds
to Secure1.
EDM1 TwinSAFE-In
FB-Out
Standard-In
EDM1 is the feedback loop for the non-delayed output channel
(MonOut). If this input is parameterized as active, the safe state of the
outputs will only be exited, when the EDM1 supplies the "1" signal.
EDM2 TwinSAFE-In
FB-Out
Standard-In
EDM2 is the feedback loop for the delayed switching of the output
channel (MonDelOut). If this input is parameterized as active, the safe
state of the outputs will only be exited, when the EDM2 supplies the
"1" signal.