Siemens SINAMICS CU240S DP-F Operating Instructions Manual page 88

Commissioning
5.5 Commissioning using the BOP
Safely-limited Speed
Parameter Description
P9690 SI setpoint for SLS
Speed setpoint that is used when the safely limited speed (SLS) is
selected. Depending on the setting in P9692/P9892 the frequency of
P9690/P9890 may also serve as a speed threshold instead of a
setpoint (see P9692).
Note:
For applications with changing loads, an increase of P9680/P9880 or
P9691/P9891 is recommended. If the "safely limited speed" (SLS) is
selected while the output frequency is below the setpoint value, Bit 04
and Bit 05 will be set simultanously in r9772.
P9890 SI setpoint for SLS
Refer to P9690.
P9691 SI tolerance for SLS
Upper tolerance margin for the SLS. If the output frequency at
initiation of the safely limited speed lies below the value of
P9691/P9891 and later on exceeds that value an LSTO is generated.
The tolerance defined by the difference P9691 to P9690 (or P9891 to
P9890) is also used for the monitoring ramp when the SBR 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.
P9891 SI tolerance for SLS
Refer to P9691.
P9692 SI response to selecting SLS
Response if, after initiation of safely limited speed (SLS), the speed
exceeds the limiting values:
SLS mode 0: Activation of the speed monitoring and disabling the
•
set value channel. If the output frequency at initiation of SLS
exceeds the parameterized speed limit an LSTO is initiated. If the
output frequency falls below the accuracy limit (1 Hz) an STO is
triggered.
SLS mode 1: Braking to the set speed with safe braking ramp, then
•
activation of the monitoring function and disabling the set value
channel. If the output frequency falls below the accuracy limit (1
Hz) an STO is triggered.
SLS mode 2
•
The monitoring is activated at once. If the output frequency at
initiation of SLS exceeds the parameterized speed limit an LSTO is
initiated. The set value channel is not disabled. If the output
frequency falls below the accuracy limit (1 Hz) an STO is triggered.
SLS mode 3
•
Like SLS mode 2 except the following: If the output frequency falls
below the accuracy limit (1 Hz) the inverter stays in operational
state for 5 s. Within this five seconds reversing or speed up again
is possible.
P9892 SI response to selecting SLS
Refer to P9692.
88
Unit
Hz
kHz
Hz
kHz
-
-
Operating Instructions, 07/2008 - FW 3.2, A5E00766042B AD
Default Min. Max.
10.0 2.0 300.0
0.010 0.002 0.300
13.0 5.0 302.0
0.013 0.005 0.302
1 0 2
1 0 2
Control Units CU240S