Siemens 6SN1123-1AA00-0DA2 Configuration Manual page 363

9 Cabinet Design and EMC
9.4 Application examples
Preconditions to
operate/move the
drive
The protective
door is opened
Closing the
protective door
9-362
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EMERGENCY STOP has been released and safety relay –A1 has been
reset.
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Protective door is closed (position switch contacts –S4 and –S5 are closed).
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Safety relay –A2 is automatically started.
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_ Safety relay –K1 is controlled via the NO contact of –K6, from the instanta-
neous output (14) of safety relay –A3.
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Line contactor –K2 is controlled via the contacts of –K5 using contactor re-
lay –K4, from the delayed output (28) of safety relay –A3. The drive DC link
is charged.
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The control enable on the control module has a high signal from safety relay
–A2.
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EMERGENCY STOP has been released and safety relay –A1 has been
reset.
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The cascading input of –A2 has a high signal.
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When the protective door is opened, the position switch contacts –S4 and
–S5 are opened.
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The instantaneous output (14) from –A2 supplies a low signal at the drive
controller enable. –> The motor is stopped at the current limit.
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After the selected time at –A2 has expired, the delayed output (28) switches
the cascading input (1) from –A3 to a low signal level.
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The instantaneous output (14) of –A3 switches–out (de–energizes) safety
relay –K1 via –K6. (the drive pulses are canceled and in turn the energy
feed to the motor is interrupted).
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The NC contact of –K1 controls contactor relay –K3. The NO contact of –K3
in parallel with –K4 closes and keeps line contactor –K2 connected to the
power supply via –K5.
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After the time selected in –A3 expires, the delayed output (28) switches–out
(de–energizes) contactor relay –K4. Line contactor –K2 remains controlled
(energized) from –K5 via –K3. The DC link remains charged via terminal 4.
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–K1 is automatically controlled (energized) from –K6 via –A3.
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–K2 is again controlled (energized) from –K5 using –K4 via –A3.
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High signal at the controller enable input of the drive. –> motor can be ope-
rated again.
SIMODRIVE 611 Configuration Manual (PJU) – 02/2012 Edition
© Siemens AG 2012 All Rights Reserved
02.12
05.01