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

Commissioning via the built-in BOP
5.6 Function commissioning
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 converter 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]
P2181[0...2] Load monitoring mode
P2182[0...2] Load monitoring threshold frequency 1 [Hz]
P2183[0...2] Load monitoring threshold frequency 2 [Hz]
P2184[0...2] Load monitoring threshold frequency 3 [Hz]
P2185[0...2] Upper torque threshold 1 [Nm]
P2186[0...2] Lower torque threshold 1 [Nm]
P2187[0...2] Upper torque threshold 2 [Nm]
P2188[0...2] Lower torque threshold 2 [Nm]
P2189[0...2] Upper torque threshold 3 [Nm]
P2190[0...2] Lower torque threshold 3 [Nm]
P2192[0...2] Load monitoring delay time [s]
108
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 converter) relative to P0305 (rated motor
current).
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)
The load monitoring is achieved by comparing the actual
frequency/torque curve with a programmed envelope (de-
fined by parameters P2182 to P2190). If the curve falls
outside the envelope, a warning or trip is generated.
= 0: Load monitoring disabled (factory default)
= 1: Warning: Low torque/frequency
= 2: Warning: High torque/frequency
= 3: Warning: High/low torque/frequency
= 4: Trip: Low torque/frequency
= 5: Trip: High torque/frequency
= 6: Trip: High/low torque/frequency
Range: 0.00 to 550.00 (factory default: 5.00)
Range: 0.00 to 550.00 (factory default: 30.00)
Range: 0.00 to 550.00 (factory default: 30.00)
Range: 0.0 to 99999.0 (factory default: value in r0333)
Range: 0.0 to 99999.0 (factory default: 0.0)
Range: 0.0 to 99999.0 (factory default: value in r0333)
Range: 0.0 to 99999.0 (factory default: 0.0)
Range: 0.0 to 99999.0 (factory default: value in r0333)
Range: 0.0 to 99999.0 (factory default: 0.0)
Range: 0 to 65 (factory default: 10)
Operating Instructions, 10/2019, A5E34559884-012
SINAMICS V20 Converter