Setting The Deadband - Siemens SINAMICS G120XA Operating Instructions Manual

Procedure
1. Set the DIP switch for analog input 0 on the Control Unit to current input ("I").
2. set p0756[0] = 3
You have defined analog input 0 as a current input with wire-break monitoring.
3. Set p0757[0] = 6.0 (x1)
4. Set p0758[0] = -100.0 (y1)
5. Set p0759[0] = 12.0 (x2)
6. Set p0760[0] = 100.0 (y2)
7. Set p0761[0] = 6
An input current < 6 mA results in fault F03505.
The characteristic for the application example is set.
❒
Parameters
Parameter
p0757[0...1]
p0758[0...1]
p0759[0...1]
p0760[0...1]
p0761[0...1]
6.2.2.6

Setting the deadband

Function description
With the control enabled, electromagnetic interference on the signal cable can cause the motor
to slowly rotate in one direction in spite of a speed setpoint = 0.
The deadband acts on the zero crossover of the analog input characteristic. Internally, the
converter sets its speed setpoint = 0, even if the signal at the analog input terminals is slightly
positive or negative. This prevents the converter from rotating the motor when the speed
setpoint = 0.
SINAMICS G120XA converter
Operating Instructions, 03/2019, FW V1.0, A5E44751205B AB
Description
CU analog inputs characteristic value x1
CU analog inputs characteristic value y1
CU analog inputs characteristic value x2
CU analog inputs characteristic value y2
CU analog inputs wire-break monitoring, response
threshold
Advanced commissioning
6.2 Drive control
Factory setting
0
0%
10
100%
2
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