Function Description, Application Example - Siemens SIMODRIVE 611 Planning Manual

05.01
9.6.2

Function description, application example

Application
An overview of an application example for a complete, drive–related control of a
machine with SIMODRIVE 611A drive components with analog setpoint inter-
face is shown in the block diagram, Section 9.6.1.
Refer to Section 9.8 for versions with SIMODRIVE 611 digital and 611 universal.
In the following Section 9.7 the individual applications and functions of the drive
control will be described in detail using circuit examples =1 to =10.
Circuit examples =1 to =3 are intended for simple machine applications. The
circuit examples =1 and =4 to =10 describe all of the essential functions which
are used for a machine tool.
The circuit concept is designed so that the individual control groups of the basic
function in circuit example =4 can be used for basic up to more complex ap-
plications – graduated to the task in hand.
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When the control is expanded, step–by–step, up to its fully expanded stage, the
bridged terminal connections in the circuit examples must be removed, and the
necessary interlocking and monitoring circuits inserted.
In the application example, Fig. 9-9, the 611A drive group comprises a 1PH7
main spindle drive and three 1FT5 feed drives using as an example, a machine
tool.
The drive–related control essentially comprises the safety–related, two–channel
hardware control and the associated PLC functions. The PLC control handles
the coordinated drive control using logical interlocking functions, but does not
have a safety–related function.
The NC/FM (positioning control) with the setpoint and actual value interface as
well as the user–side machine control is not discussed in the following. This is
the reason that they are only shown in principle.
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 Siemens AG 2001 All rights reserved
SIMODRIVE 611 Planning Guide (PJU) – 05.01 Edition
9.6 Application examples with SIMODRIVE 611
Power up/powering down/shutting down drives in an emergency; start/stop/
safe standstill
using the additional functions
Operating modes select automatic/setting–up operation with enable =5
Protective door monitoring with tumbler mechanism =6
External speed monitoring =7
Limit switch end position monitoring =8
Armature short–circuit braking =9 and
Power contactors in the motor circuit =10
Control category according to EN 954–1
The two–channel system structure of controls =4 to =6 complies with control
category 3 according to EN 954–1 when the individual components are cor-
rectly used. This means that if a single fault/error occurs in the system, the
safety function must be maintained.
9 Important Circuit Information
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