Lenze 634 - Checking the Power Stage; Measurement (1) Mains Rectifier

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8. Checkina the power staqe
The power stage was measured with an ohmmeter (analog multiple
measuring instrument e.g.
a digital multimeter (e.g.
type Metavo 3 of Metrawatt) or with
Fluke 77) when no voltage is applied
at the controller).
Power supply cable and motor cable must be disconnected. The
listed resistances stand for the nominal state. When they vary,
there is a fault.
Operate digital multimeter in the measuring range w.
For the values marked with * the measuring instrument shows a
small resistance at first, but then the stated final values are
attained after a short time (approx. l-2 s, depending on the
measuring current.
+ and - refer to the two AMP plugs on the power board in the area
-
of the DC link capacitors.
Caution:
The positive pole of the internal accumulator of the used
analog instrument is applied at the negative measuring
terminal. Instruments of other manufacturers may be
different (positive pole of the internal accumulator at
the positive measuring terminal).
8.
Measurement (11 Mains rectifier
positive connection
negative connection displayed
displayed
of the ohmmeter at
of the ohmmeter at analog
controller terminal
controller terminal value voltage
2
+ AMP plug
R > 10 kR* 0.4-0.6V
+ AMP plug
R > 10 kR* 0.4-0.6V
+ AMP plug
R< 1 kR
OL
+ AMP plug 2
R<
1 kR OL
- AMP plug
- AMP plug
L1
R > 10 kR*
0.4-0.6V
N R > 10 kR*
0.4-0.6V
L
N1
- AMP plug R< 1 kR OL
- AMP plug R+
? kQ
OL
Ll
PE
R+m OL
N
PE
R+@
OL
PE
PE
Ll
R+cx, OL
N R+CXJ OL
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