Siemens SINUMERIK 840D sl Function Manual page 432

Commissioning
9.6 Replacing a motor or encoder
In this case, the motor must be replaced carefully observing the Description,
motor with absolute value encoder. This is because it is necessary to re–cali-
brate the absolute value encoder. When re–calibrating the system, we recommend
that you permanently select the 1st position measuring system and the axis is only
traversed using the motor measuring system.
Replacing the encoder modules
When replacing the encoder modules (SMC, SME) or when replacing motors with
integrated encoders (motor with DRIVE–CLiQ), a change to the configuration of
the safety–related components is detected, and a request is made that a service
person acknowledges this.
After at least one of these components has been replaced, Alarm 27035 "Axis %1
new HW component, acknowledgement and function test required" is output
(changed CRC in index 1 of $MA_SAFE_ACT_CHECKSUM[ ], i.e. hardware IDs
have changed). The term "function test" designates a partial acceptance test that is
described in detail in the alarm description.
If Alarm 27035 is output, a new softkey "Acknowledge SI HW" is displayed in the
alarm screen. This can only be actually selected with key switch setting 3 (the
same as for the user agreement).
Fig. 9-17
9-432
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 05.2008 Edition
Acknowledge SI HW
© Siemens AG 2008 All Rights Reserved
05.08