Siemens SINAMICS S120 Manual page 29

3 DCC Blocks
NOTE If using the end limit functionality without using the pre-limit switch functionality,
please ensure that there is sufficient space after the end limit switch for the crane
to ramp down to 0 speed.
Connections
Table 3-7-1 LimitSwitch connections
SINAMICS
parameter
number
p21840 boEnableEnd
LimitSwitch
p21841 boEndLimit
Switch_
dirPositive
p21842 boEndLimit
Switch_
dirNegative
p21843 boEnablePre
LimitSwitch
p21844 boPreLimit
Switch_
dirPositive
p21845 boPreLimit
Switch_
dirNegative
r21850 boOut_Travel
Command_
MasterSwitch
r21851 boOut_Activate
PreLimitSwitch
(p22053)
Table 3-7-2 Connections to PreLimitSwitch from CraneDCC
SINAMICS Name
parameter
number
p22050 rInSpeedSetpoint
PLS (%)
Extended Crane Drive-Based Technology AC
Extended Crane Drive-Based Technology SINAMICS S120
DCC Add-On Description 109767457,
Name Connection
type
IN
IN
IN
IN
IN
IN
OUT
OUT
CraneDCC - PreLimitSwitch
Connection
type
IN
V1.2, 09/2019
Default Data
assignment type
0 BOOL Enables end limit switch
0 BOOL Signal from end limit switch
in positive direction
Signal from end limit switch
0 BOOL
in negative direction
0 BOOL Enables pre limit switch
0 BOOL Signal from pre limit switch
in positive direction
0 BOOL Signal from pre limit switch
in negative direction
Output parameter for when
0 BOOL
there is a travel command
coming from master switch
0 BOOL Output parameter that
activates the PreLimitSwitch
in the CraneDCC. Connect
r21851 to p22053
(PreLimitSwitch_
boPreLimitSwitch).
Default Data Meaning
assignment type
0 REAL Effective speed setpoint.
If LDFW is used, connect
p22156 (LDFW_rOutSpeed
Setpoint), if LDFW is not
used, connect p21883
(SpeedSetpoint_rOut_
SpeedSetpoint) from the
CU.
Meaning
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