Standards and certifications
Mobile Panel 40/50 User's manual V1.80
93
5.4
Safety
technology standards and definitions
5.4.1 Stop functions per
EN
60204-1:2006 (Electrical equipment of machines - Part 1: General
requirements)
There are three categories of stop functions:
Category
Description
0
Stopping by immediate removal of power to the
machine
actuators (i.e. an uncontrolled stop).
1
A controlled stop with power left available to the
machine
actuators to allow for stopping. Power is only interrupted when
standstill is achieved.
2
A controlled stop with power left available to the
machine
actuators.
Table 46: Overview of stop function categories
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
EN
60204-1:2006 (Electrical equipment of machines - Part 1: General
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
actuators that
can
cause a hazardous situation shall be removed as quickly as
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
safety
devices equipment or of equip-
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.
1)
With a stop category 1 emergency stop function, it must be ensured that the power to the
machine
actuators is
completely switched off. This switching off must take place using electromechanical equipment.
1)
In accordance with the national foreword of the applicable German-language version of
EN
60204-1:2006, electronic equipment – and especially emergency
stop systems – are permitted to be used regardless of the stop category if the same degree of
safety
is provided by applying standard
EN
ISO
13849-1:2015
and/or
IEC
61508, for example, as is required by
EN
60204-1.
