Sicherheitseigenschaften Kontakterweiterungen allg_PNOZ The unit meets the following safety requirements:
* The contact expansion module expands
an existing circuit. As the
output relays are monitored via the
base unit's feedback loop, the safety
functions on the existing circuit
are transferred to the contact expansion
module.
* The safety function remains effective
in the case of a component failure.
* Earth fault in the feedback loop:
Detected, depending on the base
unit that is used.
* Earth fault in the input circuit:
The output relays de-energise and
the safety contacts open.