Siemens CU240S DP-F - Page 316

Functions
8.18 Fail-safe functions
Control Units CU240S
8-120 Operating Instructions, 11/2006, A5E00766042B AA
For case 1 to case 3:
If speed increases SLS tolerance (e.g. due to trim or slip compensation) =>
• LSTO is triggered
• SF-LED on
• STO-LED off
• SS1-LED off
• SLS-LED off
Deactivation of SLS =>
• No action
To start again, LSTO must be acknowledged and a new on command
is necesarry to ramp up to frequency setpoint.
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