Product description
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3.7.4 Safety outputs (FDO)
The two safe SIL3 outputs can be used PP- or PM-switching.
Max. 2 x 2-channel safety output (outputs are supplied via V1)
Error detection/diagnostics:
Internal:
Device self test: Diagnosis if an output can not change to the safe state due to an internal error.
External:
Overload diagnosis
Cross connection diagnosis
Short-circuit diagnosis
Parameters
Safe output PP-switching:
Safe output, the load is connected between P-terminal and Ground-terminal.
Safe output PM-switching:
Safe output, the load is connected between P-terminal and M-terminal (mass), necessary for spe-
cial loads which need a separation from Ground.
Switching examples
Safe output PP-switching
For PP-switching outputs, connect the negative pole
of the load to the GND of the respective output (pin 3).
Another connection to the GND of the power supply
unit is not permitted.
The wiring has to allow an exclusion of faults regarding
cross connection.
Safe output PM-switching
For PM-switching outputs, connect the negative pole
of the load to the M-connector of the respective out-
put (pin 2).
Fig. 9: Switching examples for safe outputs
2 n.c.
1 n.c.
3 GND (V1)
4 FDO +
5 n.c.
TBPN-L1…
2 FDO –
1 n.c.
3 n.c.
4 FDO +
5 n.c.
TBPN-L1…
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