9
05.01
9.6 Application examples with SIMODRIVE 611
9-247
Siemens AG 2001 All rights reserved
SIMODRIVE 611 Planning Guide (PJU) – 05.01 Edition
S Circuit example =2:
When the drives are powered up and powered down, the complete drive
group, including line contactor and start inhibits are switched through two
channels in a safety–related fashion. The frequency with which the NE mo-
dule can be powered up per unit time is limited as a result of the pre–char-
ging circuit to ramp up the DC line voltage at the capacitors
This circuit is not suitable, e.g. for machines where the protective door is
frequently opened or for the ”setting–up” mode where the enable function is
frequently used.
S Circuit example = 3:
Using this circuit, one or several drives can be selectively stopped in the
drive group, e.g. using a key–actuated switch, limit switch, light barriers etc.,
in a safety–related fashion and brought into the ”safe standstill” operating
condition.
Beforehand, the drives must be safely stopped via the NC control. This
circuit can also be used in conjunction with the basic control = 4.
The circuit examples =2 and =3 are used to essentially understand the more
complex control functions from circuit =4 onwards.
Note
All of the following circuit examples do not include any safety–related or other
machine specific functions which may be required, with the machine control on
the user side.
9 Important Circuit Information
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