Siemens SINAMICS G120 Operating Instructions Manual page 324

Advanced commissioning
6.7 Application-specific functions
Restrictions and general constraints for blocking protection depending on the motor type and
control mode
The following preconditions must be satisfied in order that the blockage monitoring is active
for pumps and fans:
● The following applies for application class "Standard Drive Control" (p0096 = 1) or
"Expert" (p0096 = 0) and V/f control (p1300 < 10):
Speed actual value > p2182 and > 10% rated speed. A torque actual value r0080 is only
calculated in this range.
For active Imax controller (when the current limit is reached), the blocking protection acts.
● For vector control (p1300 = 20) or application class "Dynamic Drive Control" (p0096 = 2),
the following always applies:
– Speed setpoint > p1755 switchover speed, motor model
– Speed actual value > p2182 speed threshold 1
In addition, the following applies:
– for induction motors (operated with the vector control)
– for synchronous and reluctance motors (operated with vector control)
Settings
Parameters
p2165
p2168
p2181
p2182
p2183
p2184
p2186
p2188
p2190
p2191
p2192
p2193 = 3
324
No-load monitoring, blocking protection, stall protection (Page 316)
p1750.6 = 1 (when the motor is blocked, the closed-loop control does not change into
the open-loop controlled mode) or p2192 < 1 s
- p2182 > p1755 switchover speed, motor model
- With this method, a complete blockage is not detected
Description
Load monitoring blocking monitoring threshold, upper
Load monitoring blocking monitoring torque threshold
Load monitoring response
Response when evaluating the load monitoring.
Table 6-46 Response options for load monitoring (Page 325)
Load monitoring speed threshold 1
Load monitoring speed threshold 2
Load monitoring speed threshold 3
Load monitoring torque threshold 1, lower
Load monitoring torque threshold 2, lower
Load monitoring torque threshold 3, lower
Load monitoring torque threshold, no load
Load monitoring delay time
Load monitoring configuration
Table 6-45 Setting options for load monitoring (Page 318)
Converter with the CU240B-2 and CU240E-2 Control Units
Operating Instructions, 01/2016, FW V4.7 SP6, A5E34259001B AC