Function Description, Circuit Examples =1 To =9 - Siemens 6SN1123-1AA00-0DA2 Configuration Manual

8 Important Circuit Information
8.7 Circuit examples =1 to =9 with SIMODRIVE 611
8.7.1

Function description, circuit examples =1 to =9

Connection
information,
technical data,
selecting
equipment and
devices
Selection of the
switching devices
8-280
Higher–level information, instructions and functions
When engineering the drive components, safety switching devices, contactors,
shown in the circuit examples, it is absolutely necessary to carefully observe the
associated connection information/instructions, technical data of the current
Operating Instructions and Configuration Manuals as well as the appropriate
Catalogs and Application Manuals.
S
SIGUARD safety combinations 3TK28/3TK29; circuit examples as well as
the "automatic start" and "monitored start" functions are described in the
"Safety Integrated" Application Manual, Order No. 6ZB5000–0AA01–0BA1.
S
SIRIUS power and auxiliary contactors 3 RT1 and 3 RH11 should be se-
lected with positively–driven auxiliary contacts according to ZH1/457, IEC
60947–5–1.
S
Contact reliability
The auxiliary contacts, switching contacts of the switching devices and the
line isolation equipment must be able to reliably switch low switching cur-
rents v17 V, 5 mA.
S
Overvoltage limiting
All of the switching devices, coils, inductances, brakes, etc., must be equipped,
for EMC reasons and for reasons associated with the functional safety, with RC
elements, varistors, diodes or diode combinations. These are intended to
dampen overvoltages at switch–off if these damping elements are not already
integrated in the devices.
This also applies to switching devices controlled from PLC outputs.
Note
The selection of the overvoltage limiting function also influences the off delay of
the devices. This effect must be carefully taken into account when engineering
the system.
Refer to NSK Low–Voltage Switchgear Catalog for selection and technical data
SIMODRIVE 611 Configuration Manual (PJU) – 02/2012 Edition
© Siemens AG 2012 All Rights Reserved
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