Important Notes - WAGO -I/O-SYSTEM 750 Manual

WAGO-I/O-SYSTEM 750
Applications
750-502 2DO 24V DC 2.0A
Po s: 77.4 /Serie 750 (WAGO-I/O-SYSTEM)/Einsatz in sicherheitsgerichteten An wendungen/Hinweise zum Einsatz in Sicherheitsanwendungen @ 6\mod_1258974811 438_21.doc @ 44688 @ 2 @ 1
1 Einsatz der rückwirkungsfreien Digitalausgangsklemme in Sicherheitsanwendungen
7.1

Important Notes

Damage to Property!
Only a power supply unit with protective extra-low voltage (PELV) shall be used
for the 24 V power supply.
Damage to Property!
IP54 protection class is absolutely mandatory. This means that the interference-
free digital output module shall only be integrated and operated in switch boxes or
switch cabinets complying with IP54 or higher.
Damage to Property!
The 24 V power supply shall never be applied to the output of an interference-free
digital output module. This wiring failure will not be detected by the system.
Damage to Property!
A group of interference-free digital output modules shall only be supplied using a
safety switching device. Reverse supply must absolutely be avoided.
Damage to Property!
Short circuits between outputs of different interference-free digital output
modules must absolutely be avoided as they are not detected by the system.
According to EN ISO 13849-2, the following measures are required for an
"external voltage" fault exclusion:
- Use of cables routed separately and
- Protection from external damage (e.g., caused by cable duct).
Pos: 77. 5 /Dokumentation allgemein/Gliederungselemente/---Seitenwechsel--- @ 3\mod_1221108045078_0.doc @ 21810 @ 2 @ 1
Manual
Version 1.2.0
Using Interference-Free Variations of I/O Modules in Safety Related
33