Setting The Load Torque Monitoring Function - Siemens SINAMICS V20 Operating Instructions Manual

Setting parameters
Parameter Function
P1240[0...2] Configuration of Vdc controller
P0210 Supply voltage [V]
5.6.2.9

Setting the load torque monitoring function

Functionality
The load torque monitoring function allows the mechanical force transmission between the
motor and driven load to be monitored. This function can detect whether the driven load is
blocked, or the force transmission has been interrupted.
The inverter monitors the load torque of the motor in different ways:
● Motor blocking detection
● No-load monitoring
● Speed-dependent load torque monitoring
Setting parameters
Parameter Function
P2177[0...2] Delay time for motor is blocked [ms]
P2179 Current limit for no load identified [%]
P2180 Delay time for no-load identification
[ms]
SINAMICS V20 Inverter
Operating Instructions, 09/2014, A5E34559884
Setting
This parameter enables / disables Vdc controller.
= 0: Vdc controller disabled
= 1: Vdc_max controller enabled (factory default)
= 2: Kinetic buffering (Vdc_min controller) enabled
= 3: Vdc_max controller and kinetic buffering (KIB) enabled
Note: This parameter must be set to 0 (Vdc controller disa-
bled) if a braking resistor is used.
This parameter defines the supply voltage. Its default value
depends upon the type of inverter.
Range: 380 to 480
Setting
Defines the delay time for identifying that the motor is blocked.
Range: 0 to 10000 (factory default: 10)
This parameter defines the threshold current for A922 (no
load applied to inverter) relative to P0305 (rated motor cur-
rent).
Range: 0.0 to 10.0 (factory default: 3.0)
Defines the delay time for detecting a missing output load.
Range: 0 to 10000 (factory default: 2000)
Commissioning
5.6 Function commissioning
105