Siemens SINAMICS S120 Manual page 22

3 DCC Blocks
SINAMICS Name
parameter
number
p21722 boStep1_DirNegative
p21723 boStep2
p21724 boStep3
p21725 boStep4
p21726 rSpeedLimit1 (%)
p21727 rSpeedLimit2 (%)
p21728 rSpeedLimit3 (%)
p21729 rSpeedLimit4 (%)
r21883 SpeedSetpoint_
rOut_SpeedSetpoint
Set speed setpoints
The various speed setpoints should be set as follows:
·
Speed specification 4 (p21729) > speed specification 3 (p21728)
·
Speed specification 3 (p21728) > speed specification 2 (p21727)
·
Speed specification 2 (p21727) > speed specification 1 (p21726)
The speed setpoints act as follows:
Table 3-5-2 Speed setpoints setting
boStep1_ boStep1_
DirPositive DirNegative
p21721 p21722
FALSE FALSE
TRUE TRUE
Table 3-5-3 Speed setpoints setting for the positive direction
boStep1_ boStep1_
DirPositive DirNegative
p21721 p21722
TRUE FALSE
TRUE FALSE
Extended Crane Drive-Based Technology AC
Extended Crane Drive-Based Technology SINAMICS S120
DCC Add-On Description 109767457,
Connection
type assignment
IN
IN
IN
IN
IN
IN
IN
IN
OUT
boStep2
p21723
FALSE
no influence no influence
boStep2
p21723
FALSE
TRUE
V1.2, 09/2019
Default Data type
0 BOOL
0 BOOL
0 BOOL
0 BOOL
10 REAL
30 REAL
50 REAL
100 REAL
0 REAL
boStep3 boStep4
p21724 p21725
FALSE FALSE
no influence
boStep3 boStep4
p21724 p21725
FALSE FALSE
FALSE FALSE
Meaning
Select speed
specification 1; negative
direction of rotation
specification
Select speed
specification 2
Select speed
specification 3
Select speed
specification 4
Speed specification 1 as
percentage
Speed specification 2 as
percentage
Speed specification 3 as
percentage
Speed specification 4 as
percentage
Effective speed setpoint
Effective
setpoint
0
0
Effective
setpoint
Positive;
speed
specification 1
Positive;
speed
specification 2
22