Configuration 383
How to configure SLSn with ramp monitoring if drive modulation is
lost during SLS deceleration ramp
Example 1: The figure below shows an example of the modoff situation with SLS
function with ramp monitoring when "Modoff delay time" (parameter SLSx.05) is
selected:
• Basic parametrization of the SLS function made according to chapter Configuring
SLS on page 362.
• Modoff delay time monitoring is active when drive modulation is lost (SLSx.05
SLS ramp modoff reaction = Modoff delay time)
• Modoff delay time (SLSx.06 SLS ramp modoff delay time = 200 ms)
Relevant parameters for this configuration:
• Scaling speed: 1500 rpm (200.202 SAR speed scaling = 1500 rpm)
• Deceleration time and ramp monitoring according to SAR1 parameters
• ramp time from Scaling speed to zero: 1000 ms (200.112 SAR1 ramp time to
zero = 1000 ms)
• initial range for monitoring: 100 ms (SARx.02 SAR initial allowed range = 100
ms)
• minimum allowed ramp time: 500 ms (SARx.21 SAR1 min ramp time to zero =
500 ms)
• maximum allowed ramp time: 1000 ms (SARx.22 SAR1 max ramp time to
zero = 1500 ms).
• STO.14 Time to zero speed with STO and modoff: 2500 ms.
SLS indication
STO.14 delay
Motor speed
Time
1 3 42
C
A
A
D
B
Drive modulation
SLS request
SAR1 monitoring
SLSx.06 Modoff
delay time monitoring
STO active
SLSx.06
200.202
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