January 2012 6.20 Commissioning 1113
Due to the temporary input values, the following formula applies to the
nominal output voltage at connection X8:
Therefore, MP_maxFeedAt9V is determined as follows:
Perform a measurement with the internal oscilloscope to determine the
current difference between MP_maxFeedAt9V and the connected drive. Use
the parameter formula described above to determine the correct value.
Proceed as follows:
Switch to the Oscilloscope mode of operation.
Set the following values in the oscilloscope by pressing the SELECTION soft
key:
Display mode: YT
Sampling time: IPO clock
Channel 1: Analog
Channel 2: v nom
Channel 3: v act
Trigger: Free run
Press the OSCI soft key to switch to the curve representation.
Press the START soft key to start recording.
Press the axis-direction key of each axis to be checked.
Press the STOP soft key to stop recording.
Select the values V nom and Analog by using the arrow keys and write down
the measured values, which are displayed at the left side of the oscilloscope
(Cu1:).
Enter the two values in the formula for determining the parameter
MP_maxFeedAt9V.
Example:
The internal oscilloscope measured the following values on the machine:
Analog = 1.21 V
v act = 1517 mm/min
v nom = 1008 mm/min
This measurement makes clear that the actual speed value v act differs from
the nominal speed value nom. The difference can be eliminated by using the
formula mentioned above:
Enter the calculated value in the parameter MP_maxFeedAt9V and check
the calculated value by performing a measurement with the internal
oscilloscope.
U
out
V
nom
9V
maxFeedAt9V
----------------------------------------------------
⋅=
maxFeedAt9V V
act
9V
U
out
--------------
⋅=
maxFeedAt9V 1517
mm
min
-------------
9V
1.21V
------------------
11283
mm
min
-------------=⋅=
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