Safety Integrated - Industry - Siemens

SIMOCODE pro star-delta starters with safety technology
Emergency stop monitoring with monitored start
Category 4 according to EN 954-1
Function
Description of the Functionality
Persons near machines (e.g. in production engineering) must
be suitably pro-tected by technical equipment. The
EMERGENCY STOP control unit is a widely used component for
protecting persons, machines and the environment against
danger.
SIMOCODE pro is a flexible, modular motor management system
for low-voltage motors with constant speeds. It optimizes
the connection between I&C and the motor feeder, increases
plant availability while helping to cut planning and commissioning
costs during plant operation and maintenance. Integrated
in the low-voltage switchgear, SIMOCODE pro is the intelligent
connection between the higher-level automation system
and the motor feeder.
In this Safety Functional Example, the EMERGENCY STOP control
unit with positive opening contacts is monitored by a
SIRIUS 3TK2823 safety switching device as per category 4 according
to EN 954-1. If the EMERGENCY STOP is activated, the
3TK2823 safety switching device switches off its corresponding
drive as per Stop Category 0 according to EN 60204-1.
Activation of the EMERGENCY STOP is signaled to the
SIMOCODE pro via the IN4 input. This signal is used to activate
the switching state in SIMOCODE when the EMERGENCY STOP
is activated. If this contact reports "zero", SIMOCODE issues
the OFF command. After the EMERGENCY STOP has been released
and the safety switching device has been acknowledged,
the signal at the IN4 input is active and the drive can
be restarted.
A yellow LED on the operator panel will light up if the
3TK2823 trips. The operator can start the drive again as soon
as the LED turns off.
The same signal is sent to the higher-level PLC via the Cyclic
Send 1 function, and can be used here to release the switchon
function in the remote operating mode.
This example takes the safety function into particular consideration.
Operational switching of the motor feeder is via a
standard PLC and is not taken into further consideration here.
Note
Equipment, functional aspects and design guidelines
for EMERGENCY STOP control units can be found in
EN 418 (ISO 73850).
Flow Diagram
The following flow diagram illustrates functional interrelationships
(for reasons of clarity, operational stopping has not been
included)
Start
Start
Start
Start
Start
Start
Operating
Operating
Operating voltage
Operating
Operating
voltage
voltage
voltage
Operating
Operating voltage
voltage
Operating
switched
voltage
voltage
switched switched
switched
voltage
voltage
on?
voltage
switched
switched
switched
switched
on?
voltage
on?
on?
switched
switched on?
on?
switched on?
on?
on?
yes
yes
yes
yes
yes
yes
Has
Has
Has the
EMERGENCY Has
Has
the
the
the
the
the
EMERGENCY EMERGENCY
EMERGENCY Has
Has the
the
the
EMERGENCY
EMERGENCY Has the
the STOP
STOP
pushbutton EMERGENCY
EMERGENCY
STOP
pushbutton
pushbutton EMERGENCY been
been released? STOP
STOP
pushbutton EMERGENCY
EMERGENCY STOP
STOP
pushbutton
pushbutton
been
been
been
released? STOP
released?
released? STOP
pushbutton
pushbutton EMERGENCY
STOP
pushbutton
pushbutton
pushbutton
been
been
been
been
been
released?
released? STOP
pushbutton been released?
released?
released?
yes
yes
yes
yes
yes
yes
acknowledged?
acknowledged?
acknowledged?
acknowledged?
acknowledged?
acknowledged?
yes
yes
yes
yes
yes
yes
EMERGENCY
EMERGENCY
EMERGENCY STOP
EMERGENCY
EMERGENCY
STOP
STOP
STOP
EMERGENCY
EMERGENCY
is
EMERGENCY
STOP
STOP
is
acknowledged,
STOP
STOP
is
EMERGENCY
is
is
is
acknowledged,
acknowledged,
acknowledged,
STOP
STOP
is
is
is
acknowledged,
acknowledged,
STOP
is
is
K1
acknowledged,
acknowledged,
K1
acknowledged,
acknowledged,
K1
K1
acknowledged,
K1
K1
acknowledged,
is
is activated
K1
K1
is
is
is
activated
activated
activated
K1
K1 is
is
is
is
is
activated
activated
K1 is activated
activated
activated
EMERGENCY
EMERGENCY
EMERGENCY STOP
EMERGENCY
EMERGENCY
STOP
STOP
STOP
EMERGENCY
EMERGENCY
signal
EMERGENCY
STOP
STOP
signal to SIMOCODE
STOP
STOP
signal
EMERGENCY
signal
signal
signal
signal
to
to
to SIMOCODE
pro
changes
to
to
SIMOCODE
STOP
STOP
signal
signal
signal
to
to
pro
SIMOCODE
changes
changes
to
SIMOCODE
SIMOCODE
STOP
signal
signal
SIMOCODE
pro to
to 1,
1,
SIMOCODE
pro
pro
changes
to
to SIMOCODE
pro
pro
changes
changes
SIMOCODE
SIMOCODE
pro
changes
changes
to SIMOCODE
SIMOCODE
to
changes
pro
to
to
1,
1,
1,
SIMOCODE
pro
pro to
to
pro
pro
to
1,
1,
is
1,
SIMOCODE
SIMOCODE
pro changes
changes
SIMOCODE
SIMOCODE
pro
to
to
is
is
ready
SIMOCODE
pro
pro
to 1,
1,
ready
ready for
for switch-on
pro
pro
is
1,
SIMOCODE
SIMOCODE is
is
ready
ready
ready
for
for
for
switch-on
switch-on
switch-on
pro pro
is
is
SIMOCODE
pro is
is is
ready
ready
ready
ready for
for
for
for switch-on
switch-on
pro is
ready for switch-on
switch-on
switch-on
Start
Start
Start command?
Start
Start
command?
command?
command?
Start
Start command?
command?
Start command?
command?
command?
yes
yes
yes
yes
yes
yes
SIMOCODE
SIMOCODE
SIMOCODE pro starts
the
SIMOCODE
SIMOCODE
pro
pro
pro
starts
the
motor,
K2
pro
pro
starts
K2
and
starts
starts
the
SIMOCODE
SIMOCODE
the
SIMOCODE
pro
pro
motor, K2
pro
starts
starts
and
and
starts
the
the
SIMOCODE
K3/K4
K3/K4
are
the
the
motor,
motor,
motor,
K2
pro
pro
are
are
the
motor,
motor,
activated
motor,
K2
K2
K2
K2
and
pro starts
starts
and
and
K3/K4
K3/K4
K3/K4
are
the motor,
are
are
activated
activated
activated
K2 K2
and
and
starts
the and and
K3/K4
K3/K4
K3/K4
are
are
the
motor,
K2 and K3/K4
are
are
are
activated
activated
K2 and K3/K4
are activated
activated
activated
Drive
Drive
Drive is
is running
Drive
Drive
is
is
is
running
running
running
Drive
Drive is
is
is is
running
running
Drive
is running
running
running
no
no
no
no
no
no
no
no
no
no
no
no
no
no
no
no
no
no
no
no
no
no
no
no
Is
Is
Is the
motor
running?
Is
Is
the the motor
the
the
motor
motor
motor
running?
running?
running?
Is
Is Is
the
the
the
motor
motor
the motor running?
running?
Is
the
motor running?
running?
running?
yes
yes
yes
yes
yes
yes
Has
Has
Has the
EMERGENCY Has
Has
the
the
the
the
the
EMERGENCY EMERGENCY
EMERGENCY Has
Has the
the
the
EMERGENCY
EMERGENCY Has the
the STOP
STOP
pushbutton EMERGENCY
EMERGENCY
STOP
pushbutton
pushbutton EMERGENCY been
been pressed? STOP
STOP
pushbutton EMERGENCY
EMERGENCY STOP
STOP
pushbutton
pushbutton
been
been
been
pressed? STOP
pressed?
pressed? STOP
pushbutton
pushbutton EMERGENCY
STOP
pushbutton
pushbutton
pushbutton
been
been
been
been
been
pressed?
pressed? STOP
pushbutton been pressed?
pressed?
pressed?
Functional Example No. CD-FE-I-042-V10-EN 155
no
no
no
no
no
no
yes
yes
yes
yes
yes
yes
3TK2823
3TK2823
3TK2823 switches
3TK2823
3TK2823
switches
switches
switches
3TK2823
3TK2823
off
3TK2823
switches
switches
off
off K1,
K1, K2
switches
switches
off
3TK2823
K2
K2 and
and K4
off
off
K1,
switches
K1,
K1,
K2
switches
switches
off
off
K2
K2
and
and
and
K4
K4
K4
off
K1,
K1,
K1,
K2
K2
switches
off
off K1,
K1,
K2
K2
K2
and
and
and
and
and
K4
K4
off K1, K2 and K4
K4
K4
no
no
no
no
no
no
Drive
Drive
Drive stops and is
disconnected
Drive
Drive
stops stops
stops
stops
stops
and and
and
and
and
is is
is
disconnected from
is
is
disconnected
Drive
Drive
disconnected
disconnected
Drive
stops
stops
stops
and
and
and
is
is
from
from
is
disconnected
disconnected
Drive stops
stops and
and
disconnected
disconnected
from
is
is
disconnected
from
from
is
disconnected
disconnected
the
network
from
from
the the
the
the
network
network
network
from
from
the
the
the
network
network
from
the
the network
network
network Stop
Stop
Stop category
category 0
Stop
Stop
category
category
category
0
0
0
Stop
Stop category
category
category
0
0
Stop category
category 0
0
0
EMERGENCY
EMERGENCY
EMERGENCY STOP
EMERGENCY
EMERGENCY
STOP
STOP
STOP
EMERGENCY
EMERGENCY
signal
EMERGENCY
STOP
STOP
signal
signal to
to SIMOCODE
STOP
STOP
signal
EMERGENCY
signal
signal
to SIMOCODE
SIMOCODE
STOP
signal
pro
pro changes
to
to
SIMOCODE
STOP
STOP
signal
signal to
to
SIMOCODE
SIMOCODE
pro changes
changes
to
SIMOCODE
SIMOCODE
STOP
signal
signal SIMOCODE
pro to
to 0,
pro
pro
changes
to
to
pro
pro 0,
0,
SIMOCODE
pro
changes
changes
to SIMOCODE
SIMOCODE
changes
changes
to
to
to
0,
pro
pro
SIMOCODE
SIMOCODE
changes
to
to
pro
to
0,
0,
0,
0,
SIMOCODE
pro changes
changes to
pro
pro
0,
SIMOCODE
SIMOCODE
changes
to
activates
SIMOCODE
SIMOCODE
pro
to 0,
0,
activates
activates
SIMOCODE
pro
pro
0,
the
the switch-
pro
pro
activates
SIMOCODE
SIMOCODE
activates
activates
the switchswitch-
pro
activates
activates
SIMOCODE
activates
the
the
offoff
command
the
the
switch-
pro
pro
activates
activates switchswitchoffoffoff
command
command
command
the
the switchswitch-
pro
activates switchswitchoffoffoffoff
command
command
the switchoff
command
command
command
SIMOCODE
SIMOCODE
SIMOCODE pro signals
SIMOCODE
SIMOCODE
pro pro
pro
EMERGENCY
pro
pro
signals
signals
signals
SIMOCODE
SIMOCODE pro
pro
EMERGENCY
EMERGENCY
pro
signals
signals
STOP
signals
signals
EMERGENCY
SIMOCODE pro
pro
STOP
STOP
signals
EMERGENCY
EMERGENCY
pro
EMERGENCY
EMERGENCY
STOP
signals
signals
on
EMERGENCY
STOP
STOP
signals
EMERGENCY
EMERGENCY
on
on the
the operator
STOP
STOP
on
EMERGENCY
operator
operator panel
panel
and
on
on
the
and
and sends
the
the
operator
STOP
STOP
on
on
on
the
the
operator
operator
sends
sends
the
operator
operator panel
STOP
operator
the
the message
panel
panel
and
on
on panel
panel
and
and
sends message
message
panel
and
and
on the
the
and
sends
sends
the operator
operator
via
sends
sends
the
via
via cycl.
sends
the
cycl.
cycl. signal
the
the
message
panel
panel
the
and message
message
via
sends
signal
signal
the
message
message
panel
and
sends message
via
via data
via
via
cycl.
sends
cycl.
cycl.
signal
the
the message
message
signal
signal
data
data
data
via
via
via
cycl.
cycl.
cycl.
cycl.
cycl.
signal
signal
the message
via cycl. signal
signal data
data
via cycl. signal data
data
data
Ex. No.
5.3