18
4.2.2
CONTROLLER CARD POTENTIOMETER ADJUSTMENTS
Since certain potentiometer adjustments affect other associated potentiometer settings, a sequence
of adjustments must be followed to ensure the proper setting of each potentiometer within the three
groups comprising the unit. The three groups: frequency, voltage, and current, are listed below in
the sequence to be performed within each group.
FREQUENCY
VOLTAGE
CURRENT
POT. PARA
POT. PARA
POT. PARA
R15
4.2.3
R29
4.2.6
R34 4.2.9
R16 4.2.4
R61 4.2.7
4.2.10
R19
4.2.5
R58 4.2.8
4.2.3
LOW FREQUENCY TRIM (45 Hz R15 on motherboard )
1)
Connect frequency counter to rear panel output terminal strip.
2)
Turn FREQ control fully ccw.
3)
Set circuit breaker to ON.
4)
Set OUTPUT switch to ON
5)
Adjust VOLTS control until volts meter indicates 10 Vrms minimum.
6)
Adjust 45 Hz potentiometer R15 until frequency counter indicates 45 Hz.
4.2.4
HIGH END FREQUENCY TRIM (500 Hz R16 on motherboard )
1)
Turn FREQ control fully cw.
2)
Adjust 500 Hz potentiometer R16 until frequency counter indicates 500 Hz.
4.2.5
FREQUENCY METER ADJUST (Hz-METER R19 on Motherboard)
1)
Turn FREQ control fully ccw.
2)
Adjust Hz-METER potentiometer R19 until front panel meter indicates 500 Hz.
4.2.6
FULL SCALE OUTPUT VOLTAGE ADJUST (R29 on each Phase Control PWA )
1)
Using DVM set to ac volts, connect it across rear panel output terminal strip.
2)
Turn VOLTS control fully cw. Set the meter select to phase A
3)
Set circuit breaker of power chassis to ON.
4)
Set OUTPUT switch of power chassis to ON.
5)
Adjust R29 until DVM indicates 135 Vrms.
6)
Repeat adjustment for phase B & C. Set the meter select to the proper phase when adjusting.
Содержание BL10000 Series
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Страница 17: ...11 Figure 3 1 BL10000 AC Source Control Chassis Front and Rear Panel Views ...
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