Safety Integrated - Industry - Siemens

Emergency Stop with monitored start Category 4
acc. to EN 954-1 with ET200S Safety Motorstarter Solution Local
Function
Description of the functionality
If people (in production technology) are close to machines,
then they must be protected using the appropriate equipment.
The Emergency Stop control device represents a widely
established component that protects man, machine and environment
against potential hazards. In this Safety Functional
Example, the Emergency Stop control device is monitored using
two positively-driven contacts using the PM-D-F1 safety
module in accordance with Category 4 acc. to EN 954-1. If the
Emergency Stop control device is pressed, the PM-D-F1 safety
module shuts down the motor starter assigned to it and the
supply contactor according to Stop Category 0 acc. to EN
60204-1. In this particular example, a drive is stopped. Before
restarting or acknowledging the Emergency Stop shutdown
using the start button, it is checked as to whether the contacts
of the Emergency Stop control device are closed and the motor
starter has been shut down. This example only discusses
the safety function. The motor starter is operationally
switched using a standard PLC and is not considered any further
here.
Note
Equipment, functional aspects and Design Guidelines
for Emergency Stop control devices are provided in
EN 418 (EN ISO 13850 being prepared).
Advantages/customer benefits
■ Pure hardware engineering without having to configure/program
software for the safety-relevant technology
■ Extensive Profibus diagnostics of the motor starter and the
PM-D-F1 safety module.
■ As a result of the lower time/costs involved with materials
and wiring, the mounting space in the cabinet is reduced
and therefore the overall dimensions of the plants/system.
Functional Example No. CD-FE-I-026-V10-EN 55
Ex. No.
3.2