Siemens SIMATIC ET 200pro - Page 125

Setting functions
8.5 Motor control
SIMATIC ET 200pro FC-2 converter
Operating Instructions, 04/2015, FW V4.7.3, A5E34257324B AB
125
To record the friction characteristic, proceed as follows:
1. Set P3845 = 1: The inverter accelerates the motor successively in both directions of
rotation and averages the measurement results of the positive and negative directions.
2. Switch on the motor (ON/OFF1 = 1).
3. The inverter accelerates the motor.
During measurement, the inverter signals the warning A07961.
When the inverter has determined all the intermediate points of the friction characteristic
without fault code F07963, the inverter stops the motor.
You have recorded the friction characteristic.
Interconnect the precontrol of the speed controller with the frictional torque
To interconnect the precontrol of the spe
ed
controller with the frictional torque, set p1513
= r3841 (frictional torque = additional torque
2).
You will find additional information in function
diagram 6060 of the List Manual.
Parameter
Parameter
Explanation
p3820
…
p2839
Intermediate points of the friction characteristic [rpm; Nm]
r3840
Friction characteristic status word
.00
1 signal: Friction characteristic OK
.01
1 signal: Determination of the friction characteristic is active
.02
1 signal: Determination of the friction characteristic is complete
.03
1 signal: Determination of the friction characteristic has been aborted
.08
1 signal: Friction characteristic positive direction
r3841
Friction characteristic, output [Nm]
p3842
Activate friction characteristic
0: Friction characteristic deactivated
1: Friction characteristic activated
p3845
Activate friction characteristic plot
(factory setting: 0)
0: Friction characteristic plot deactivated
1: Friction characteristic plot activated, both directions
2: Friction characteristic plot activated, positive direction
3: Friction characteristic plot activated, negative direction