Safety Integrated - Industry - Siemens

This communication is realized via PROFIBUS. This enables
■ transferring the setpoint speed value to MASTERDRIVES
■ detecting the actual speed value of MASTERDRIVES.
DP slave (I-Slave)
An ET 200S with intelligent and fail-safe interface (IM 151-7F-
CPU) is used.
Note
In this example, the IM 151-7F CPU has already been
configured as DP slave. However, if you require information
for integrating an intelligent IM 151 interface
as DP slave, please refer to the manual "ET 200S - Interface
Module IM 151-7 CPU" (Entry-ID: 12714722)
The I-Slave realizes the following functionalities:
Safe drive shut down
The drive is switched off safely for
■ Triggered emergency stop
■ Opening the safety door in normal operation
■ Error during speed monitoring in "safe speed" (SG) mode
If one of these cases occurs, the drive is stopped immediately:
The fail-safe output of the F-DO is connected with the OUT3
contact at MASTERDRIVES. At negative edge, OUT3 switches
off the operation as fast as possible (fast stop).
Note
Fast stop is generally no primary safety function.
However it enhances safety and helps reduce kinetic
energy. OUT3 can also be connected to MASTERDRIVES
via a standard module. The reason behind using OUT3
via an F-DO in this example is that otherwise an additional
standard output module for ET 200S would be
required.
Reaching category 3 according to EN 954-1 requires two different
methods for safe shut down:
■ Option K80 for MASTERDRIVES
■ Shutdown by contactor
Option K80 (shut down method 1)
Option K80 for MASTERDRIVES contains a fail-safe relays with
positively driven feedback contact, which shuts down power
supply for controlling the power transistors (IGBTs). Pulse
blocking occurs
■ in case of an error with delay after fast stop (OUT3=0) via
the F-DO
■ in operating mode "safe speed" (SG) and drive standstill.
Shutdown by line contactor (shutdown method 2)
If an error is detected during evaluating the feedback contact
of option K80, the contactor disconnects the drive from the
network. If there is no readback error at option K80, the drive
remains connected to the network; category 3 according to
EN 954-1 remains true.
Functional Example No. AS-FE-I-012-V10-EN 365
Ex. No.
12