Meeting PLe for series connected
switches, Pilz Automation
Technology has launched
Decentralised Periphery PDP20. The
new interface module PDP20 F 4
mag is designed for series connection
of safety switches, such as tongue
interlocks or magnetic safety
switches, up to PL e. As such, it
provides a standard-compliant
solution in accordance with EN ISO
13849-1.

The interface module can be
connected to dual-channel evaluation
devices (such as the popular PNOZ
safety relays, PNOZmulti configurable
safety relays, PSS safety PLCs). Up to
4 switches can be connected to each
PDP20 module.

PDP20 interface modules also offer
a high level of decentralisation due to
the ability to cascade modules. Each
module features 4 dual-channel
inputs and 2 solid-state safe outputs
(OSSDs), 1 diagnostic solid state
output and 2 test pulsed outputs. To
cascade multiple PDP20 modules, the
OSSDs of one are fed into one of the
dual-channel inputs of the next
PDP20 module.