List of Parameters
Parameters
1-291
© Siemens AG 2007 All Rights Reserved
SINAMICS G120 Control Units CU240S, Edition 05/2007
Description: Upper tolerance margin for the SLS. If the actual frequency at initiation of the safely limited speed lies below the
value of p9691/p9891 and later on exceeds that value a passivated safe torque off (passivated STO) is generated.
The tolerance defined by the difference p9691 - p9690 (or p9891 - p9890) is also used for the monitoring ramp
when the SS1 is active.
For applications with changing loads it is recommended to increase p9691/p9891.
Note: The value in p9691 needs to be larger than the value in p9690. This condition is checked when leaving the safety
commissioning.
Description: Defines the response after the initiation of the safely limited speed (SLS).
p9692 = p9892 = 0 (mode 0):
The fact that the output frequency at initiation of the safely limited speed exceeds the safe limit value parameterised
in p9691/p9891 is interpreted as fault, wherefore a safe stop 1 followed by a passivated safe torque off is initiated.
If, however, the output frequency at initiation of the safely limited speed lies below the upper limit parameterised in
p9691/p9891 the drives frequency control channel is blocked, wherefore the actual drive frequency cannot be con-
trolled by an external control (e.g. PLC, MotorPoti, USS, etc.) anymore. The drive will then be locked at the current
frequency.
p9692 = p9892 = 1 (mode 1):
The fact that the output frequency at initiation of the safely limited speed exceeds the safe limit value is not inter-
preted as fault, wherefore the safe stop 1 function is initiated automatically.
The target frequency is not zero (as it usually is at SS1) but rather a parameterisable value (p9690/p9890) just
below the tolerance value parameterised in p9691/p9891.
If the output frequency lies below the parameterised frequency (p9690/p9890) the brake ramp does not need to be
activated and the output frequency does not need to be changed, thus the behaviour would be the same as safely
limited speed mode 0.
After initiating the function safely limited speed and braking the drive down to the parameterised frequency
(p9690/p9890) by using the safe stop 1 the drives frequency control channel is blocked, wherefore the actual drive
frequency cannot be controlled by an external control (e.g. PLC, MotorPoti, USS, etc.) anymore. The drive will then
be locked at a constant frequency, which is parameterised in p9690/p9890.
p9692 = p9892 = 2 (mode 2):
After initiating the safely limited speed function only the monitoring ramp will be activated. The safe stop 1 will not
be activated, therefore, it would be the responsibility of the customer to ramp the drive down to or below the SLS
setpoint (p9690/9890), before activating SLS.
The drive frequency is then controlled by the external control (e.g. PLC, MotorPoti, USS, etc.). Now, setting the con-
trol channel to a frequency, which exceeds the parameterised limit in p9691/p9891, is interpreted as fault condition,
wherefore a passivated safe torque off is initiated immediately.
Values: 0: Initiate STO with braking ramp and drive fault when f > f_SLS
1: Activate braking ramp while f > f_SLS
2: Initiate STO without braking ramp and with drive fault while f
p9691 SI tolerance for SLS / SI tolerance SLS
CU240S DP-F Access level: 3 P-Group: Safety Integrated Data type: Floating Point
Quick comm. NO Active: NO Data set: -
Can be changed: -
Min Max Factory setting
5.0 [Hz] 303.0 [Hz] 13.0 [Hz]
p9692 SI response to selecting SLS / SI SLS response
CU240S DP-F Access level: 3 P-Group: Safety Integrated Data type: Unsigned16
Quick comm. NO Active: NO Data set: -
Can be changed: -
Min Max Factory setting
0 2 1
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