Password; Checksum; Forced Dormant Error Detection - Siemens SINAMICS G120 Function Manual

Description

2.8 Password

2.8 Password
The safety functions are protected against unauthorized changes by a password.
Note
If you want to change the parameters of the safety functions, but do not know the password,
please contact customer support.
The factory setting for the password is "0". During commissioning, choose your password
from the permissible range 1 ... FFFF FFFF.
2.9

Checksum

Each parameter of the safety functions is available twice. Following commissioning, the
inverter permanently monitors the parameters for any unwanted changes by means of
checksums (Cyclic Redundancy Check, CRC).
During commissioning, you set only one of the two redundant parameters at a time. Once
commissioning is complete, duplicate all parameters of the safety functions using a copy
function.
2.10

Forced dormant error detection

To fulfill the requirements of standards EN 954-1, ISO 13849-1 and IEC 61508 regarding
timely error detection, the inverter must regularly test its safety-relevant circuits to ensure
that they function correctly - this must be performed at least once every year.
Forced dormant error detection (test stop)
The inverter monitors the regular test of its safety-relevant circuits, which monitor the speed
of the motor and which switch off the motor torque.
Figure 2-17
40
Forced dormant error detection
Safety Integrated Function Manual, SINAMICS G120
Function Manual, 07/2010, FW 4.3.2, A5E03052391B AA