Siemens CU240S DP-F - Page 321

Functions
8.18 Fail-safe functions
Control Units CU240S
Operating Instructions, 11/2006, A5E00766042B AA
8-125
Case 1: SLS monitoring (p9691/p9891) > Frequency setpoint > SLS setpoint
Initiation of SLS =>
• Ramp monitoring activated
• SLS-LED flashing
• Frequency setpoint deactivated
• Ramp down with SS1 to SLS setpoint
When SLS is reached =>
• SLS monitoring on
• ES-LED on
• Frequency setpoint inactive
Deactivation of SLS =>
• Ramp monitoring off
• SLS monitoring off
• SLS-LED and ES-LED off
• activate freq. setpoint and ramp to freq.
setpoint
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