Siemens Simodrive 611 Configuration Manual page 289

8 Important Circuit Information
8.7 Circuit examples =1 to =9 with SIMODRIVE 611
Application
Functions
8-288
Drives Off
S
Using the EMERGENCY STOP pushbutton –S24 or Off –S22 – the drives
are braked and stopped as quickly as possible at the current limit. The func-
tion is similar in circuit diagram =2. After the braking time of the spindle
drive, the –K31/–K32 contactor is used to switch off the drive group, i.e. line
contactor off and start inhibits active.
Holding brake
The control is similar to circuit example =2
Temperature sensor
The function is similar to circuit example =2
In addition, the temperature monitoring function of the spindle drive must be
evaluated via PLC I13 and –I14.
Circuit example =5 "Drives, operating modes auto-
matic operation/setting–up operation with agreement"
The operating mode changeover is used for most machines/plants, e.g. in setup
mode, in order to traverse/operate sub–functions of the machine at a controlled,
reduced velocity. In this particular operating mode, other sub–areas must be
shutdown in a safety–related way to avoid potential hazards. The drives can
only be operated with an agreement issued by the operator in the setting–up
mode with reduced velocity/speed. This agreement can, for example, depend-
ing on the risk assessment, be issued from a secure location outside the haz-
ardous zone of the machine or using a mobile hand–held unit with additional
EMERGENCY STOP pushbutton in the operating zone of the machine.
Notice
In this case, the user is responsible for observing and complying with the
specific technological and machine–specific regulations and standards to
maintain the protection and safety of personnel and machinery. Further,
residual risks must be evaluated – those risks that are due for example to
vertical axes.
The start phase of the machine after power–on is especially critical. An
agreement for a specific traversing motion should only be issued if the machine
had previously moved in a controlled way.
Operating modes
The operating mode selector switch –S15 must be able to be locked as a key–
operated switch or must be implemented in another way so that it can be
locked–out.
Notice
The operating mode may only be changed when the drives are stationary and
this must not result in a hazardous situation at the machine.
SIMODRIVE 611 Configuration Manual (PJU) – 02/2012 Edition
© Siemens AG 2012 All Rights Reserved
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