Siemens Simodrive 611 Configuration Manual page 287

8 Important Circuit Information
8.7 Circuit examples =1 to =9 with SIMODRIVE 611
Application
Functions
8-286
Stop drives
Safety relay –K11 is de–energized using key–operated switch –S11 or when
EMERGENCY STOP is pressed. The instantaneous contact withdraws terminal
65 "controller enable" and the drive is braked at the current limit. Terminal 663 is
de–energized via the off delay contact –K11 and therefore the start inhibit acti-
vated.
Start inhibit monitoring function
The start inhibit monitoring function for terminals 35–36 is effective in the
EMERGENCY STOP circuit of contactor =K2–K21.
Normally, when a drive is stopped, the NC contact AS1–AS2 of the start inhibit
relay should always be closed before the NO contact of contactor –K13 opens.
To ensure this, the contactor coil –K13 must be equipped with a diode to extend
the contactor off delay. If the start inhibit function is incorrect, the monitoring
circuit opens and disconnects the complete drive group through the line contac-
tor.
The start inhibit is actively monitored in a cyclic manner after every stop operation.
Holding brake
The function is similar to that in circuit example =2
Circuit example =4 "Drives, on/off/stopping in an emer-
gency; start/stop/safe standstill"
Drive group, comprising an NE module, MSD module for 1PH7 motor and three
FD modules 611 with High Standard control boards. Circuit =4 is the basic cir-
cuit for the drive–related control, e.g. of a machine tool. Using the subsequent
circuit components =5 to =9 with the necessary interlock and monitoring circuits
and the application–specific supplements, the control can be expanded in a
modular way and therefore individually adapted to the particular application.
Drives, on (NE module)
S
Key–operated switch –S21, control on.
The power–off circuit in front of the EMERGENCY STOP safety switching
device –K21 must be closed under the following conditions:
S
The interlocking circuits of the following expansions of circuit =7 are jumpered.
S
Contactor –K25 closes and contact =A1–A25/1–2 NC ready is closed. The
power–on conditions are almost comparable to circuit =2. The additional func-
tion is that the ready signal of the MSD module – PLC I15 must be interlocked in
the PLC in addition to the ready signal of the NE module – PLC I11.
SIMODRIVE 611 Configuration Manual (PJU) – 02/2012 Edition
© Siemens AG 2012 All Rights Reserved
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