Safety Technology Standards And Definitions; Stop Functions Per En 60204-1:2006; Ments); Emergency Stops Per En 60204-1:2006 - B&R Mobile Panel 40 User Manual

5.4 Safety technology standards and definitions
5.4.1 Stop functions per
requirements)
There are three categories of stop functions:
Category
0
1
2
The necessary stop functions must be determined based on a risk assessment of the machine. Category 0 and
category 1 stop functions must be functional regardless of operating mode. A category 0 stop must have priority.
Stop functions must have priority over assigned start functions. Resetting the stop function is not permitted to
trigger a dangerous state.
5.4.2 Emergency stops per
requirements)
In addition to the requirements for stop functions, the emergency stop function has the following requirements:
• It shall override all other functions and operations in all modes.
• Power to the
machine
possible without creating other hazards.
• A reset is not permitted to initiate a restart.
• The stop function is not permitted to reduce the effectiveness of the
ment with safety-related functions.
• The stop function is not permitted to interfere with equipment designed to free personnel from hazardous
situations.
Emergency stops must be category 0 or category 1 stop functions. The necessary stop function must be determined
based on a risk assessment of the machine.
Only hardwired electromechanical equipment is permitted to be used for stop category 0 emergency stop functions.
In addition, this functionality is not permitted to depend on electronic switching logic (hardware or software) or the
transfer of commands via a communication network or data connection.
With a stop category 1 emergency stop function, it must be ensured that the power to the
completely switched off. This switching off must take place using electromechanical equipment.
In accordance with the national foreword of the applicable German-language version of
1)
stop systems – are permitted to be used regardless of the stop category if the same degree of
and/or IEC 61508, for example, as is required by
Mobile Panel 40/50 User's manual V1.80
EN 60204-1:2006 (Electrical equipment of machines - Part 1: General
Description
Stopping by immediate removal of power to the
A controlled stop with power left available to the
standstill is achieved.
A controlled stop with power left available to the
Table 46: Overview of stop function categories
EN 60204-1:2006 (Electrical equipment of machines - Part 1: General
actuators that can cause a hazardous situation shall be removed as quickly as
EN 60204-1.
Standards and certifications
machine actuators (i.e. an uncontrolled stop).
machine actuators to allow for stopping. Power is only interrupted when
machine actuators.
safety devices equipment or of equip-
1)
EN 60204-1:2006, electronic equipment – and especially emergency
safety is provided by applying standard
machine actuators is
EN ISO 13849-1:2015
93