Electronics LP2000_VAR - Manual (Page 10)

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Fig. 17 Since this application uses a 30:5 ratio cur-
rent transformer the AC controller must be adjusted
to read 30.0 full scale. Press and hold the Coarse
Display Range and Down arrow until 30.0 is dis-
played. For finer adjustment use the Fine Display
Range.
Fig. 18 Start the wheel motor and
place a clamp-on type ammeter on
the motor leads to confirm calibration
of both the panel ammeter and the
AC controller display.
Note: the AC controller has been
factory set for zero and span. Minor
adjustments may be needed. Press
the Span button along with up/down
arrows to change value. Release the
Span Button to see new amperage
readings. Make the controller reading
match clamp on. Even though there
is no shot flow, ammeter readings
will show the no load or no flow rate
values. Note that the clamp-on am-
meter and the AC Controller digital
display shows the no load motor am-
perage to be about 8.8 amps, while
the panel meter shows over 9 amps.
Fig. 17
Fig. 18