Table 6-6: Programmable Z Adjustment Pots; Table 6-7: Formulas To Calculate R And L - California Instruments MX30-1 User Manual

User Manual - Rev AJ
check the connections and phase measure
measurement readings you get are indeed
If it is necessary to adjust the pots, see Table 6-6 for the corresponding pot designators. The
top cover has to b removed to access these pots. They are located along the top edge of
the controller board(s). For Series I MX units, adjustments for phase A are on the phase A
boa rd (7000-721), adjustments for phase B and C are on the p
For Series II MX units, all adjustments are on the 7003-718 controller board. The ref
designators are the same on either series controller.
12. Repeat steps 2 through 11 for phase B and C. (except on single phase only models).
Definitions:
V
NL
V
L
I = Measured RMS current.
F = Source frequency (50 Hz).
∆Φ = Ph
from phase meter under NL and L condition and determine phase shift.
Formulas to calculate R and L component of output impedance:
R = ( V
X
L
L = X
MX Series
e
MX Series I
Phase / Board #
Phase A (7000-721)
Phase B (7000-722)
Phase C (7000-722)
MX Series II
Phase / Board #
Phase A (7003-718-2 / -4)
Phase B (7003-718-2)
Phase C (7003-718-2)

Table 6-6: Programmable Z adjustment pots

= Measured RMS voltage under no load.
= Measured RMS voltage under load
ase angle shift between load and no load conditions. Record pha
* cos( ∆Φ ) - V
) / I
NL L
* sin( ∆Φ )) / I
= ( V
NL
/ (2 * Pi * F)
L

Table 6-7: Formulas to calculate R and L

ments if this is not the case to make sure the
correct.
hase B/C board (7000-722).
R resistive Xl inductive
R121 R122
R112 R111
R114 R115
R resistive Xl inductive
R121 R122
R112 R111
R114 R115
California Instruments
erence
se angle
175