Siemens 6SN1123-1AA00-0DA2 Configuration Manual page 266

05.01
S
S
Note
All of the following circuit examples neither include safety–related or other
mechanical interlocks that may be necessary with the machine control on the
user side.
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SIMODRIVE 611 Configuration Manual (PJU) – 02/2012 Edition
8.6 Application examples with SIMODRIVE 611
Circuit example =2:
When the drives are powered up and powered down, the complete drive
group, including the line contactor and start inhibit terminals, is switched in a
safety–related way through two channels. The power–on frequency per unit
time of the NE module is limited. This is due to the pre–charging circuit to
ramp up the DC link voltage at the capacitors.
This circuit is, for example, not suitable for machines where the protective
door is frequently opened or for the "setting–up" mode where the agreement
function is frequently applied.
Circuit example =3:
Using this circuit, one or more drives can be selectively shut down in a safe-
ty–related way from an operational drive group, using a key–operated
switch, limit switch, light barriers, and brought into the "safe standstill" oper-
ating mode.
Beforehand, the NC control must have safely stopped the drives. This circuit
can also be used in conjunction with the basic control =4.
Circuit examples =2 and =3 are also used to obtain a basic understanding of
the complex and extensive control functions from circuit =4 onwards.
8 Important Circuit Information
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