SIEB & MEYER sinudyn-0360520 Series, Описание аппаратуры

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Restart Lock acc. to Safety Concept K2
sinudyn-36 Hardware Description 0360520 79
13 Restart Lock acc. to
Safety Concept K2
Valid from device version 0003
X
according to EN 13849-1:2008-12; EN 62061:2005-10 SIL 3
The restart lock is provided for preventing an unintentional start of a variable-speed
drive from the standstill and can, for example, be used in the machine function "Safe
hold”. It comprises a restart lock according to EN 13849-1:2008-12 and a stop func-
tion according to EN 60204-1:2007-06 (VDE 0113) category 0. A stop category 1
can be achieved by using a tested, safe emergency stop device with delay or a safe
PLC according to EN 60204-1. The stop functions are defined by the EN 60204-1,
paragraph 9.2.2, 9.2.5.3.
There are the following three categories of stop functions:
Every machine must be equipped with a stop function according to category 0. Stop
functions according to category 1 and/or 2 must be integrated into the machine if
they are necessary for safety and/or operational reasons.
The disadvantages of the disconnection can be eliminated by the consequent use of
electronic elements. The standard EN 60204-1:2007-6 "Safety of machinery – Elec-
trical equipment of machines" also allows the use of electronic equipment for the stop
function in case of an emergency, if these - under application of the standards EN
13849-1:2008-12 and / or IEC 62061:2005-10 - meet the same safety requirements
as required according to EN 60204-1.
This checked safety circuit was conceived according to the concept paper by Drive-
com "Technical Guide for Safety Drives" from 04/23/2004. The concept paper was
checked by the BIA and the TÜV Rheinland: It was confirmed that the required stan-
dards and regulations were met.
The standstill of the machine must be caused by a high-ranking control before and
the stop function of at least category 2 must be ensured.
The restart lock interrupts the energy supply between drive and motor by deactivat-
ing the output stage control. Thus, any rotation of the motor is made impossible.
The advantage of this circuit is that a single drive can be locked safely in an installa-
tion with several drives while other drives remain in proper condition. Besides, a drive
can be locked without having to charge the intermediate circuit electrolytic capacitor
at a new restart.
category 0 Put the machine to standstill by interrupting the energy supply be-
tween motor and drives immediately (i.e. an uncontrolled stand-
still).
category 1 The machine is decelerated to standstill without disconnecting
the energy supply between motor and drives (i.e. a controlled
standstill). The energy supply is interrupted at that moment the
machine is at a secure standstill.
category 2 The energy supply between motor and drives is not interrupted (a
controlled standstill).