Notes On Operation; Safety Concept - Siemens SIMATIC S5 Manual

IP 267
5

Notes on Operation

Please ensure that your programmable controller meets the following require-
ments:
• The S5-100U is properly installed and wired;
• The power supply unit is connected according to regulations (
Manual);
• The CPU of the S5-100U can work with the IP 267 ( Preface).
You require a programmer (PG 605/615/635/675/685/695 or 750) with the STEP 5
programming package for configuring and programming the IP 267.
5.1

Safety Concept

The following switching elements are indispensable to the safety concept of the
system and must therefore be installed with great care and adapted to the
conditions of the system:
• Emergency OFF switches, with which you can switch off the whole system
( Caution block on the next page).
• Limit switches, with which you limit the traversing range. These switches
initiate programmed deceleration and can be connected to the digital inputs
I + and I - as NCs or NOs.
• Two emergency limit switches, which only respond after a limit switch has
responded. The input PD is always "0" active, i.e. this circuit is closed-circuit
protected. You can only use NCs as emergency limit switches (PDs) and
combinations of emergency limit switches (PDs) must always be connected in
series. These switches disable pulse output immediately and they must be
connected to the digital input PD of the IP 267. When making these
connections, please observe the required clearances between PD and I + and
I - ( Figure 5-3.).
EWA 4NEB 812 6061-02a

Notes on Operation

S5-100U
5-1
5