Atec Pacific-Power-AMX Series - Manual (Page 7)

UPC CONTROLLER SPECIFICATIONS
The UPC controller is essentially a 3f AC arbitrary waveform generator and Precision AC metering system. Each
waveform stored in the UPC is encoded with 12 bit amplitude and 10 bit time resolution for each cycle. The waveform for
each phase may be independently selected and may be independently
varied in amplitude and phase angle with respect to phase A.
The UPC output metering samples the output volts and amps at 512 samples per measurement using a 12 bit A/D converter.
This technique provides exceptional metering accuracy and resolution (20 bits), and delivers a high-fidelity waveform back
to a host computer for analysis.
The UPC includes a remote GPIB interface compatible with IEEE 488.2 and SCPI. An available option is an RS-232 serial
port that operates up to 38.4 kBaud.
Frequency: 20.00 to 5000 Hz
±
0.01%
Voltage: Programmable, 0-VMAX, in 0.1 volt steps
Direct (see table on page 6)
Voltage: Multi-range units are equipped with
Transformer output transformers. When alternate range is
selected, voltage at transformer output is
programmable in steps of 0.5 volts.
Accuracy: Executive voltage is within
±
50 mv (0.03%)
Command of command voltage, referenced to the
Voltage internal voltmeter with CSC engaged.
Accuracy:
±
0.01%, 20-5000 Hz
Output Zo: Dynamic output impedance (Zo) is
(Optional) programmable, 0 to
±
Zo max. in 0.1%
steps. Zo value in milliohms varies with
different models but usually results in a
±
10% change in output voltage at maximum
load amps.
Phase: Phase Angle (f) of Phases B and C
Angle relative to Phase A is programmable from 0-
359
°
in 1
°
increments
±
0.5
°
.
Current: Current limit is programmable from 0
Limit to Ipeak maximum of the power source.
Accuracy is
±
1%, resolution
±
0.05%.
Library: Stores up to 99 steady state parameter
Steady sets consisting of waveform, voltage,
State frequency, f angle and current limit. Can be
Programs executed by program number from the front
panel or the bus.
Library: Stores up to 99 transient programs - one
Transient associated with each steady state program.
Programs Allows for changes in volts and frequency
vs. time, or waveform changes by cycle count.
Library: Stores up to 99 waveforms that can be edited
Waveform and executed in any manner and in any
output phase.
Voltmeter: Range - 0-354 volts L-N
0-708 volts L-L
Resolution - 0.10VAC to front panel
0.001VAC to remote interface
Accuracy -
±
0.25% of reading
±
0.1% of
range (50-500Hz)
Ammeter: Range - 300% of system current rating
Resolution - 0.01AAC to front panel
0.001AAC to remote interface
Accuracy -
±
0.25% of reading
±
0.1% of
range (50-500Hz)
Power Meter: Range - Based on ammeter range
Resolution - 1.0 watts or VA to front panel
0.001 Watts or VA to remote
interface
Accuracy -
±
1% of Full Scale
Power Factor: Calculated and displayed to three significant
& Crest Factor digits.
Ext. Input: Each phase is algebraically summed with
UPC waveform and amplified 25X to the
direct output.
Amplitude:
±
10 volt input for each phase
Mod. Input modulates the output
±
100%
Sync Outputs:1) Zero crossing, Phase A
2) Transient start-stop
3) True when Transient is enabled
4) Clock - 1024 times the output freq.
Command: Average time to start of parameter change
Response from bus command (end of string character)
Time is 50 ms. Ramp transition time to final value
is settable from 250
µ
s to 300 sec.
Waveform : Permits waveform creation by entering %
Synthesis amplitude and phase angle for the 2nd
through the 51st harmonics.
Waveform: Reports voltage and current waveform
Analysis harmonic content in % and phase angle
for the 2nd through the 51st harmonics.
Displays THD, OHD, EHD in %.
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