Siemens SINAMICS G120 CU240B-2, Operating Instructions Manual, Page: 225 / 290

Functions
7.10 Safe Torque Off (STO) safety function
Inverter with CU240B-2 and CU240E-2 Control Units
Operating Instructions, 07/2010, FW 4.3.2, A5E02299792B AA
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7.10.8.3 Reduced acceptance test
A complete acceptance test is only necessary following first commissioning. An acceptance
test with a reduced scope is sufficient for expansions of safety functions.
The reduced acceptance tests must be carried out separately for each individual drive, as far
as the machine allows.
Reduced acceptance test for function extensions
Table 7- 39 Scope of the acceptance test depending on specific measures
Acceptance test Measure
Documentation Function test Completion of the certificate
Replacing the Control Unit or
the Power Modules.
Supplement:

Hardware data
 Configuration
 Firmware Versions
Yes. Supplement:
New checksums and
countersignature
Hardware replacement of
safety-related distributed I/O
devices (e.g. emergency off
switch).
Supplement:
 Hardware data

Configuration

Firmware Versions
Partially.
Limitation to
replaced
components.
No.
Firmware - upgrading the
Control Unit.
Supplement:

Version data

New safety functions
Yes. Supplement:
New checksums and
countersignature.
Functional expansion of the
machine (additional drive).
Supplementary safety functions
for each drive and function table.
Yes.
Testing the
additional functions.
Supplement:
New checksums and
countersignature.
Functional expansion of a
drive (e.g. enable STO).
Supplement to the safety
functions for each drive and
function table.
Yes.
Testing the
additional functions.
Supplement.
New checksums and
countersignature.
Transfer of inverter
parameters to other identical
machines by means of series
commissioning.
Supplement to the machine
description (checking of the
firmware versions).
No. No, if data are identical
(checking of checksums).