Siemens SINAMICS S150 Operating Instructions Manual page 383

Table 9-11 DDS switchover with load gearbox position tracking
DDS p186 p187
(MDS) (encoder_1)
0 0 EDS0
1 0 EDS0
2 0 EDS0
3 0 EDS0
4 0 EDS0
5 1 EDS4
6 2 EDS5
7 3 EDS0
8 0 EDS0
9 4 EDS6
Position tracking is continued:
The behavior during the switchover is the same as it would be if the data set had not even
been switched.
Position tracking newly initiated:
The behavior during the switchover is the same as the behavior after a POWER ON.
The position value read by the absolute encoder is compared to the stored value.
If the position difference is within the tolerance range, the position is corrected
correspondingly; if it is outside the range, a corresponding error message is generated.
Position tracking is reset:
The stored actual position value is rejected and the overflow counter is reset to zero.
Drive converter cabinet units
Operating Instructions, 07/07, A5E00288214A
p188 p189
(encoder_2) (encoder_3)
EDS1 EDS2
EDS1 EDS2
EDS1 EDS2
EDS1 EDS2
EDS3 EDS2
EDS1 EDS2
EDS6 EDS7
EDS1 EDS2
EDS1 EDS2
EDS0 EDS2
Functions, monitoring, and protective functions
Encoder Mechan.
for relationships
position
p2504/
control
p2505/
P2502
p2506 or
p2503
encoder_1 xxx
encoder_1 xxx
encoder_1 yyy
encoder_2 xxx
encoder_2 xxx
encoder_1 xxx
encoder_1 zzz
encoder_1 xxx
encoder_1 xxx
encoder_1 www
9.4 Extended functions
Load Changeover response
gearbox
position
tracking
enabled ---
enabled Switching during pulse
inhibition or operation has
no effect
disabled Pulse disable/operation:
Encoder adjustment and
referencing bit are reset.
Position tracking is no
longer calculated; it is not
reset until there is a new
encoder adjustment.
enabled Pulse disable/operation:
Position tracking is
enabled
continued and referencing
enabled
bit is reset.
enabled
enabled MDS switching alone
during pulse disable or
operation has no effect
disabled Pulse disable/operation:
Position tracking for EDS0
(of the DDS0) is newly
initiated and referencing
bits are reset.
Not Pulse disable/operation:
significa Position tracking for EDS
nt (of the DDS0) is newly
initiated and referencing
bits are reset.
383