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Connect Devices
WAGO-I/O-SYSTEM 750
750-666/000-003 4FDI/2FDO 24V/10A PROFIsafe V2 iPar
Manual
Version 1.2.0, valid from HW/SW Version 01/01
Connect connection O2B to the 0V potential of the 24V field supply voltage. In
addition, connect connection O1B to connection O+ and connection O2A to
connection O-.
You can achieve a risk reduction of SIL3/Cat.4/PL e, for example, by reading
back the switching states of the power jumper contacts from positively driven
contacts of a relay.
The switched shared 0V potential of the loads switched using the interference-free
I/O modules is connection O-. If necessary, use a potential multiplier module, e.g.,
750-614, to reproduce the switched shared 0V potential.
Figure 37: Interference-free digital output module connection via potential distributor, output
configuration "H-Side/L-Side 1"
Line break detection on the digital output
Monitoring of line breaks only works between connections O1B and O2A only
works in conjunction with loads switched directly using the PROFIsafe I/O
module. If you switch interference-free I/O modules of the WAGO-I/O-SYSTEM
750, then set the value of the
Line break detection
parameter to "inactive".
Line break detection is not safety related and cannot be part of the safety function
under any circumstances.
Test pulses switch off outputs of the interference-free I/O modules
The PROFIsafe I/O module 750-666/000-003 performs a test pulse on the digital
power outputs every minute. These cause the outputs of the interference-free I/O
modules of the WAGO-I/O-SYSTEM-750 to shut down. If you need
uninterrupted operation of the outputs, then you can switch off the cyclical test
pulse by setting the Test pulse duration parameter to the value "0 ms (off)".
Always observe the "No test pulses at test pulse duration = 0 ms!" safety
information.