Phoenix Contact IB IL 24 PSDO 8-PAC, User Manual, Page: 10 / 112

IB IL 24 PSDO 8-PAC
10 / 112
PHOENIX CONTACT 7619_en_05
1.4 Electrical safety
Direct/Indirect contact Protection against direct and indirect contact according to VDE 0100 Part 410 must be en-
sured for all components connected to the system. In the event of an error, parasitic voltages
must not occur (single-fault tolerance).
This can be achieved by
– Using power supply units with safe isolation (PELV).
– Decoupling circuits, which are not PELV systems, using optocouplers, relays, and other
components that meet the requirements of safe isolation.
Power supply units for
24 V supply
Only use power supply units with safe isolation and PELV according to EN 50178/VDE 0160
(PELV). This prevents short circuits between primary and secondary sides.
Make sure that the output voltage of the power supply does not exceed 32 V even in the
event of an error.
Insulation rating When selecting the equipment, please take into consideration the dirt and surge voltages
which may occur during operation.
The IB IL 24 PSDO 8-PAC module is designed for overvoltage category II (according to
DIN EN 60664-1). If you expect surge voltages in the system, which exceed the values de-
fined in overvoltage category II, take into consideration additional measures for voltage lim-
itation.
Installation and configura-
tion
Please observe the instructions for installing and configuring the system (see Section “Doc-
umentation” on page 13).
WARNING: Hazardous shock currents and the loss of functional safety
Disregarding instructions for electrical safety may result in hazardous shock currents and
the loss of functional safety.
In order to ensure electrical safety, please observe the following points.
WARNING: Depending on the application, incorrect installation and upgrades can
pose serious risks for the user
The user is obliged to design the devices used and their installation in the system accord-
ing to these requirements. This also means that existing plants and systems retrofitted
with INTERBUS-Safety, SafetyBridge or PROFIsafe must be checked and tested again in
this respect.