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EPxxxx | Industrial housing · 0 次阅读

Step 4: Test run

1. Ensure that all previous steps have been completed successfully.
2. Remove any load from the conveyor roller.
3. If the motor has a holding brake, release the holding brake: set "Brake output" to 1.
Step 4: Test run 1:
4. Set "Velocity" to 50% of the nominal velocity of the motor including gear unit:
Step 4: Test run 2:
Formula for calculating 50% of the nominal velocity:

 

Step 4: Test run 3:

n: Value for the "Velocity" output variable

nN: Nominal velocity of the motor in rpm

i: Transmission ratio. (i = 1 if no gear unit
   is used)

5. Set "Enable" to 1.
Step 4: Test run 4:
The rotor is aligned for 1 second.
The box then attempts to turn the motor.
6. Assess the result.

Possible results of the test run

  • If the motor rotates continuously: skip to next step of commissioning.
  • If the motor does not rotate continuously:
    • Set the output variable "Enable" to 0
    • Check the status bits in the input variable "Device Diag".
    • Evaluate the status bits with the help of the table below.
    • Set the output variable "Reset" to 1. (this resets the status bits)
    • Set the output variable "Reset" to 0.
    • Repeat the test run: to do this, set the output variable "Enable" to 1.

 

Set bit in "Device Diag"

Possible reasons

Solution

(none)

The output variable "Velocity" is smaller than the parameter 8020:09 "start velocity".

Check the calculations.

"Channel 1 motor overload I2T error"

The output current is too high.

Reduce the value of parameter 8023:14 "Sensorless offset scaling".

"Channel 1 commutation error"

The conveyor roller is loaded 1)

Remove any load from the conveyor roller.

The output current is too low.

Increase the value of parameter 8023:14 "Sensorless offset scaling".

"Rampup velocity" is too high 1)

Check the calculation of the parameter
8023:19 "Rampup velocity".

If the calculation is correct, reduce the value of this parameter.

"Rampup needed switchover events" is too low.

Increase the value of parameter
8023:21 "Rampup needed switchover events".

Incorrect motor parameters

Check the motor parameters

The motor is too weak 1)

Insert a gear unit and recalculate all parameters.

1) Especially likely when the motor makes a sound with ascending pitch.