SIEB & MEYER sinudyn-0360520 Series, Описание аппаратуры

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Safety Circuit / Restart Lock
sinudyn-36 Hardware Description 0360520 75
12 Safety Circuit / Restart Lock
Valid up to device version 0002
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).
The stop functions are defined by the EN 60204 (VDE 0113), 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 standstill of the machine must have been initiated by an external machine control
before. Besides, it must be assured that the reference speed value input signals the
reference speed value Zero, and that the internal input IN0 signals emergency stop.
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 capacitors
at a 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).
The restart lock does not galvanically separate the output stages
from the motor. Thus, the restart lock does not protect against elec-
tric shock.
Warning
The complete machine must always be galvanically separated from
the mains by using the main switch (EN 60204-1 5.3) for any inter-
ruptions of the operation, maintenance, repair or cleaning work at the
machine or system.