Preconditions And Constraints; General Conditions - Siemens SINAMICS G120 Function Manual

2.2

Preconditions and constraints

2.2.1

General conditions

Prerequisites for using fail-safe functions
1. The machine risk assessment (e.g. in compliance with EN ISO 1050, "Safety of
2. The closed-loop speed control of the inverter must function properly. Each fail-safe drive
3. Once the machine has been successfully commissioned, you must review the typical
Permissible control modes for using fail-safe functions
When the above-mentioned conditions are fulfilled, all of the fail-safe functions can be used
for both V/f control and vector control.
Permissible motors for using fail-safe functions
When the above-mentioned conditions are fulfilled, all of the fail-safe functions can be used
for induction motors from SIEMENS and other manufacturers.
Synchronous motors are not permitted.
Safety Integrated Function Manual, SINAMICS G120 and G120C
Function Manual, 01/2011, FW 4.4, A5E03052391B AB
machinery - Principles of risk assessment") allows inverter safety functions to be used in
accordance with SIL 2 or PL d.
train must be set up in such a way that all the operating procedures performed by the
driven machine can be properly monitored and that the inverter operates below its limit
values (for current, temperature, voltage, etc.). The drive train comprises an inverter,
motor, brake and driven machine. The performance and parameters of the inverter must
be compatible with both the connected motor and the application in question.
operating conditions and operate the machine close to the permissible limit values. The
fail-safe inverter must not malfunction during this test.
Description
2.2 Preconditions and constraints
17