Siemens simovert masterdrives

12.2010 Configuration and Connection Examples
Siemens AG 6SE7087-6QX70 (Version AM)
SIMOVERT MASTERDRIVES Compendium Motion Control 2-43
♦ Emergency Stop is canceled and the safety switching device –A1 is
reset.
♦ Protective door is closed (position switch contacts –S4 and –S5 are
closed).
♦ Safety switching device –A2 is started automatically.
♦ Safety relay –K1 is energized via the instantaneous output (14) of
the safety switching device –A3.
♦ Line contactor –K2 is energized via contactor relay –K4 of the
instantaneous output (28) of the safety switching device –A3. The
DC link of the drive is charged.
♦ A high signal is applied to input OFF3 on the MASTERDRIVES
control board by the safety switching device –A2.
♦ Emergency Stop is canceled and the safety switching device –A1 is
reset.
♦ A high signal is applied to the cascading input of –A2.
♦ When the protective door is opened, the position switch contacts
–S4 and –S5 are opened.
♦ The instantaneous output (14) of –A2 supplies a low signal to the
OFF3 input of the drive.
→ The motor is brought to a standstill along the quick stop ramp.
♦ When the timer on –A2 runs down, the time-delayed output (28)
switches the cascading input (1) of –A3 to low level.
♦ The instantaneous output (14) of –A3 de-energizes the safety relay
–K1. (Pulse suppression in the drive and thus interruption of energy
supply to the motor.)
♦ The NC contact of –K1 energizes the contactor relay –K3. The NO
contact of –K3, which is located parallel to –K4, closes and keeps
the line contactor –K2 connected to the voltage supply.
♦ When the timer set in –A3 runs down, the time-delayed output (28)
de-energizes the contactor relay –K4. The line contactor –K2 is
energized by –K3.
♦ –K1 is automatically energized via –A3
♦ –K2 is energized again by –K4 via –A3
♦ High signal at OFF3 input of the drive.
→ Motor can be operated again.
Requirements for
operating the drive
Opening the
protective door
Closing the
protective cover