Block Protection - Siemens SINAMICS G150 Operating Instructions Manual

9.4.3

Block protection

Description
The "Motor blocked" fault is only triggered when the speed of the drive is below the
adjustable speed threshold in p2175. With vector control, it must also be ensured that the
speed controller is at the limit. With V/f control, the current limit must already have been
reached.
Once the ON delay (p2177) has elapsed, the message "Motor blocked" and fault F07900 are
generated.
The blocking monitoring enable can be deactivated via p2144.
Figure 9-18 Blocking protection
Function diagram
FP 8012
Parameter
• p2144
• p2175
• p2177
Converter cabinet units
Operating Instructions, 03/2012, A5E03263466A
Messages and monitoring - Torque messages, motor blocked/stalled
BI: Motor stall monitoring enable (negated)
Motor locked speed threshold
Motor locked delay time
Functions, Monitoring, and Protective Functions
9.4 Monitoring and protective functions
499