5 Commissioning
Maschinenfabrik Reinhausen 201446 2374092/04 ENTAPCON® 260
Checking line drop compensation
If you want to use line drop compensation, you need to run this function test.
A load current of ≥ 10 % of the nominal transformer current is needed for the
following function tests. Before the function test, ensure that all parameters
for line drop compensation [► 75] and for Z compensation [► 78] are set
to 0.
1. Press to select manual mode.
2. Press until the main screen is displayed.
3. If necessary, press until the control deviation dU is shown.
ð The measured voltage must be within the bandwidth.
4. Set line drop compensation Ur parameter to 20.0 V [► 77].
ð The control deviation dU must be negative.
5. Set line drop compensation Ux parameter to -20.0 V [► 77].
6. Press until the main screen is displayed.
7. If necessary, press until the control deviation dU is shown.
ð The control deviation dU must be positive.
If the control deviation appears in the opposite direction, change the polarity
of the current transformer.
8. Set the line drop compensation Ur and line drop compensation Ux
parameters to the desired operating values.
ð The function test for line drop compensation is complete.
Checking Z compensation
If you want to use Z compensation, you need to run this function test. A load
current of ≥ 10 % of the nominal transformer current is needed for the follow-
ing function test .
1. Press to select manual mode.
2. Set all parameters for line drop compensation and Z compensation to 0.
3. Press until the main screen is displayed.
4. If necessary, press until the control deviation dU is shown.
ð The measured voltage must be within the bandwidth.
5. Set the Z compensation parameter to 15.0 V.
6. Press until the main screen is displayed.
7. If necessary, press until the control deviation dU is shown.
ð The control deviation dU must be negative.
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