Pacific Power Source UPC-3 User manual

UPC-3 / UPC-1
PROGRAMMABLE CONTROLLERS
FIRMWARE V4.25 AND LATER
OPERATION
MANUAL
PACIFIC
POWER SOURCE
δ

UPC-3
UPC-1
OPERATION MANUAL
PPSC PART NO. 141020
THIS MANUAL ASSIGNED TO:
CONTROLLER, MODEL: S/N: .
POWER SOURCE, MODEL: S/N: .
THE INFORMATION CONTAINED IN THIS MANUAL
IS PROPRIETARY TO PACIFIC POWER SOURCE, INC.
AND MAY NOT BE COPIED OR REPRINTED
WITHOUT ITS EXPRESSED WRITTEN CONSENT.
PACIFIC POWER SOURCE, INC.
17692 Fitch
Irvine, CALIF. 92614
SECOND EDITION
COPYRIGHT (C) PPSI MARCH, 2004.

CERTIFICATION
PACIFIC POWER SOURCE CERTIFIES THAT THIS INSTRUMENT WAS THOROUGHLY TESTED
AND INSPECTED AND FOUND TO MEET OR EXCEED ITS PUBLISHED SPECIFICATIONS WHEN IT
WAS SHIPPED FROM THE FACTORY.
LIMITED WARRANTY
Pacific Power Source (PPS) warrants each unit to be free from defects in material and workmanship.
For the period of two (2) years from the date of shipment to the purchaser, PPS will either repair or
replace, at its sole discretion, any unit returned to its factory in Irvine, California. This warranty does not
cover batteries. It does not cover damage arising from misuse of the unit or attempted field
modifications or repairs. This warranty specifically excludes damage to other equipment connected to
this unit.
Upon notice from the purchaser within (30) days of shipment of units found to be defective in material or
workmanship, PPS will pay all shipping charges for the repair or replacement. If notice is received more
than thirty (30) days from shipment, all shipping charges shall be paid by the purchaser. Units returned
on debit memos will not be accepted and will be returned without repair.
This warranty is exclusive of all other warranties, express or implied.

SECTION 1 GENERAL
i
TABLE OF CONTENTS
PAGE
HOW TO... FRONT PANEL REFERENCE ................................ vi
REMOTE INTERFACE FUNCTION REFERENCE.......................... vii
1GENERAL ..................................................... 1
1.1 USING THIS MANUAL......................................... 1
1.2 SAFETY NOTICES ........................................... 1
1.3 GENERAL PRODUCT DESCRIPTION ............................. 3
1.3.1 UPC DESCRIPTION ....................................... 3
1.3.2 CONTROLLER MODELS ................................... 6
1.3.3 SCU DESCRIPTION ....................................... 6
2SPECIFICATIONS ............................................... 7
2.1 CONTROL SPECIFICATIONS ................................... 7
2.1.1 FREQUENCY CONTROL SPECIFICATIONS ..................... 7
2.1.2 VOLTAGE CONTROL SPECIFICATIONS ....................... 8
2.1.3 CURRENT LIMIT CONTROL SPECIFICATIONS .................. 9
2.1.4 WAVEFORM CONTROL SPECIFICATIONS .................... 10
2.1.5 OUTPUT POWER FORM CONTROL SPECIFICATIONS ........... 10
2.1.6 PHASE ANGLE CONTROL SPECIFICATIONS .................. 11
2.1.7 WAVEFORM SYNTHESIS SPECIFICATIONS ................... 11
2.2 METERING SPECIFICATIONS.................................. 12
2.2.1 VOLTMETER SPECIFICATIONS ............................. 12
2.2.2 AMMETER SPECIFICATIONS............................... 12
2.2.3 kVA METER SPECIFICATIONS.............................. 12
2.2.4 KILOWATT METER SPECIFICATIONS ........................ 13
2.2.5 POWER FACTOR METER SPECIFICATIONS ................... 13
2.2.6 FREQUENCY DISPLAY SPECIFICATIONS ..................... 13
2.2.7 WAVEFORM ANALYSIS ................................... 13
2.3 ELECTRICAL INTERFACE .................................... 14
2.3.1 ISOLATION ............................................ 14
2.3.2 INPUT POWER .......................................... 14
2.3.3 ANALOG OUTPUTS ...................................... 14
2.3.4 OUTPUT CONTROL ...................................... 15
2.3.5 OUTPUT CONFIRMATIONS ................................ 15
2.3.6 ANALOG INPUTS ........................................ 17
2.3.7 DIGITAL OUTPUTS ...................................... 17
2.3.8 METERING INPUTS ...................................... 19
2.4 GPIB REMOTE INTERFACE ................................... 20

SECTION 1 GENERAL
ii
3INSTALLATION............................................. 21
3.1 REMOVE INPUT SERVICE .................................... 22
3.2 REMOVE COVER AND CABLING ............................... 22
3.3 REMOVE EXISTING CONTROLLER ............................. 22
3.4 INSTALL UPC .............................................. 22
3.5 INSTALL CABLING AND COVER ............................... 23
3.6 CONNECT INPUT SERVICE ................................... 23
3.7 CONFIGURE UPC ........................................... 25
3.7.1 CONFIGURE TRANSFORMER RATIO ........................ 25
3.7.2 CONFIGURE AMPS TO VOLTS RATIO ........................ 25
3.7.3 CONFIGURE SERIAL PORT SETTINGS ....................... 26
3.7.4 CONFIGURE GPIB DEVICE ADDRESS (option) ................. 26
4FRONT PANEL OPERATION ...................................... 27
4.1 GUIDE TO QUICK OPERATION................................. 27
4.1.1 QUICK OVERVIEW....................................... 27
4.1.2 QUICKLY PUTTING THE UNIT TO USE ....................... 30
4.2 FRONT PANEL CONTROLS AND INDICATORS .................... 32
4.2.1 POWER SOURCE FRONT PANEL ........................... 32
4.2.2 UPC FRONT PANEL...................................... 33
4.3 MANUAL MODE ............................................ 35
4.3.1 METERING DISPLAYS .................................... 35
4.3.2 VOLTAGE ENTRY ....................................... 38
4.3.3 FREQUENCY CONTROL .................................. 38
4.4 PROGRAM OPERATE MODE .................................. 38
4.4.1 PROGRAM EXECUTION................................... 39
4.4.2 TRANSIENT EXECUTION .................................. 39
4.5 PROGRAM EDIT MODE ...................................... 44
4.5.1 PROGRAM EDITING...................................... 44
4.5.2 TRANSIENT EDITING ..................................... 48
4.6 SETUP MODE .............................................. 57
4.6.1 PROGRAM SETUP ....................................... 57
4.6.2 WAVEFORM SETUP...................................... 59
4.6.3 GENERAL SETUP ....................................... 66

SECTION 1 GENERAL
iii
5GPIB and SERIAL REMOTE OPERATION ............................ 77
5.1 INTRODUCTION ............................................ 77
5.2 CONVENTIONS............................................. 78
5.3 PROGRAM CONTROL ....................................... 80
5.3.1 STEADY-STATE OUTPUT PARAMETERS ..................... 81
5.3.2 TRANSIENT SEGMENT PARAMETERS ....................... 82
5.3.3 PROGRAM MEMORY CONTROL ............................ 83
5.4 SIGNAL CONTROL .......................................... 83
5.4.1 OUTPUT PARAMETERS................................... 83
5.4.2 SIGNAL ROUTING ....................................... 86
5.4.3 WAVEFORM CONTROL ................................... 86
5.5 QUERY FUNCTIONS ......................................... 87
5.5.1 CONFIGURATION QUERIES ............................... 87
5.5.2 METERED DATA QUERIES ................................ 87
5.5.3 EVENT and STATUS REPORTING ........................... 90
5.6 DEVICE CONTROL .......................................... 96
5.6.1 IEEE-488.1 INTERFACE FUNCTIONS ......................... 97
5.6.2 IEEE-488.2 DEVICE CONTROL COMMANDS ................... 98
5.7 REMOTE CONTROL EXAMPLES ............................... 99
5.7.1 EXAMPLE OF STORING A PROGRAM ....................... 100
5.7.2 EXAMPLE OF PROGRAM QUERY .......................... 101
5.7.3 EXAMPLE OF EXECUTING A STORED PROGRAM ............. 102
5.7.4 EXAMPLE OF EXECUTING A STORED PROGRAM TRANSIENT ... 102
5.7.5 EXAMPLE OF DIRECTLY CHANGING THE OUTPUT PARAMETERS 102
5.7.6 EXAMPLE OF VOLTAGE and CURRENT MEASUREMENT QUERY . 103
5.7.7 EXAMPLES OF VOLTAGE and CURRENT WAVEFORM QUERY ... 104
6MAINTENANCE ............................................... 105
7SERVICE .................................................... 106
8CALIBRATION................................................ 107
8.1 CALIBRATION INTERVAL.................................... 107
8.1.1 TEST EQUIPMENT REQUIREMENTS ........................ 107
8.2 EXTERNALLY REFERENCED CALIBRATION ..................... 107
8.2.1 K FACTORS DISPLAY ................................... 110
9USER DIAGNOSTICS .......................................... 111

SECTION 1 GENERAL
iv
10 RS-232 SERIAL REMOTE INTERFACE OPTION ..................... 115
10.1 GENERAL................................................. 115
10.2 SERIAL PORT SPECIFICATIONS ............................... 115
10.3 SETUP ................................................... 116
10.4 OPERATION ............................................... 116
10.4.1 COMMUNICATION MONITORING AID ........................ 116
10.4.2 FUNCTIONAL EXCEPTIONS................................ 117
10.4.3 FUNCTIONAL ADDITIONS ................................. 117
10.5 PHYSICAL CONNECTIONS ................................. 117
10.6 TESTING THE RS-232 REMOTE INTERFACE ................... 118
INDEX ......................................................... 119
NOTES ......................................................... 122
MODIFICATIONS ................................................. 123

SECTION 1 GENERAL
v
LIST OF ILLUSTRATIONS
FIGURE 1.3 SCU/UPC-3, UPC-3, UPC-1............................................................................................ 5
FIGURE 2.3.3 J3 CONTROL AND OSCILLATOR................................................................................ 16
FIGURE 2.3.6 J5 AUXILIARY INPUTS AND OUTPUTS ...................................................................... 18
FIGURE 2.3.8 J2 METERING INPUTS................................................................................................. 19
FIGURE 2.4 J4 GPIB REMOTE INTERFACE ................................................................................... 20
FIGURE 3.5 INSTALLATION............................................................................................................. 24
FIGURE 4.1 POWER SOURCE FRONT PANEL .............................................................................. 31
FIGURE 4.5.2.1 MIL-STD-704D UNDERVOLTAGE TRANSIENT .......................................................... 56
FIGURE 4.5.2.2 SPIKE TRANSIENT ...................................................................................................... 56
FIGURE 4.6.2.1 EDITED WAVEFORM ................................................................................................... 62
FIGURE 5.1 STATUS BYTE MODEL ................................................................................................ 91
FIGURE 5.2 STANDARD EVENT REGISTER MODEL..................................................................... 92
FIGURE 5.3 SCPI STATUS REGISTERS MODEL ........................................................................... 95

SECTION 1 GENERAL
vi
HOW TO... FRONT PANEL REFERENCE
This is a quick reference to commonly used FRONT PANEL functions and will aid the user in quickly
learning how to use functions of interest.
HOW TO SECTION
CALIBRATE OUTPUT AND METERS 8.2
CALIBRATE PROGRAMMABLE OUTPUT IMPEDANCE 4.6.3.1.1
CHANGE OPERATING MODES 4.1.1
CLOSE / OPEN OUTPUT CONTACTOR 4.1.2 steps 6,7
COPY A WAVEFORM 4.6.2.2
COPY A PROGRAM 4.6.1.1
CREATE A TIME BASED TRANSIENT 4.5.2.1
CREATE A CYCLE BASED TRANSIENT 4.5.2.2
CREATE A PROGRAM 4.5.1.1
DELETE A PROGRAM 4.6.1.2
EDIT A WAVEFORM 4.6.2.1
EDIT A PROGRAM 4.5.1
EDIT A TRANSIENT 4.5.2
ERASE ALL RAM AND RESET CPU 4.6.1.3
EXECUTE A PROGRAM 4.4.1
EXECUTE A TRANSIENT 4.4.2
QUICKLY PUT THE UNIT TO USE 4.1.2
READ HARMONIC SPECTRUM 4.3.1.1
READ OUTPUT POWER 4.3.1
READ OUTPUT POWER FACTOR 4.3.1
READ OUTPUT CURRENT CREST FACTOR 4.3.1
READ OUTPUT VOLTAGE 4.3.1
READ OUTPUT FREQUENCY (INDICATOR) 4.3.1
READ OUTPUT CURRENT 4.3.1
SELECT LOCAL or REMOTE OPERATION 5.1
SELECT METERING SENSE POINT (INTERNAL, EXTERNAL) 4.6.3.1
SET CSC (CONTINUOUS SELF CALIBRATION) 4.6.3.1
SET BAUD RATE FOR RS-232 SERIAL INTERFACE 10.3
SET GPIB DEVICE ADDRESS 4.6.3.3
SET MIN/MAX FREQUENCY RANGE 4.6.3.1
SET OUTPUT POWER FORM 4.5.1.1
SET OUTPUT CURRENT LIMIT 4.5.1.1
SET OUTPUT PHASE ANGLES 4.5.1.1
SET OUTPUT COUPLING (XFMR OR DIRECT) 4.5.1.1
SET OUTPUT FREQUENCY 4.1.2, 4.3.3, 4.5.1.1
SET FREQUENCY LIMITS 4.6.3.1
SET OUTPUT VOLTAGE 4.1.2, 4.3.2, 4.5.1.1
SET VOLTAGE LIMITS 4.6.3.1
SET OUTPUT WAVEFORM 4.5.1.1
SET PROGRAMMABLE OUTPUT IMPEDANCE 4.6.3.1
SET SLEW RATES 4.6.3.6
SET TRANSITION TIME 4.6.3.1

SECTION 1 GENERAL
vii
REMOTE INTERFACE FUNCTION REFERENCE
This is a quick reference to commonly used REMOTE INTERFACE functions and will aid the user in
quickly finding the functions of interest.
FUNCTION SECTION
CALIBRATE METERING 5.6
CALIBRATE PROGRAMMABLE OUTPUT IMPEDANCE 5.4.1
CLOSE / OPEN OUTPUT CONTACTOR 5.7.5, 5.4.2
CREATE A PROGRAM 5.3, 5.7.1
CREATE A TIME BASED TRANSIENT 5.3, 5.7.1
CREATE A CYCLE BASED TRANSIENT 5.3, 5.7.1
DELETE A PROGRAM 5.3.3
DOWNLOAD A METERED WAVEFORM - REMOTE INTERFACE 5.7.7
DOWNLOAD / UPLOAD A STORED WAVEFORM REMOTE INT. 5.4.3
ERASE ALL RAM AND RESET CPU 5.3.3
EXECUTE A PROGRAM 5.4.1, 5.7.3
EXECUTE A TRANSIENT 5.4.1, 5.7.4
READ HARMONIC SPECTRUM 5.5.2
READ OUTPUT POWER 5.5.2, 5.7.6
READ OUTPUT POWER FACTOR 5.5.2, 5.7.6
READ OUTPUT CURRENT CREST FACTOR 5.5.2, 5.7.6
READ OUTPUT VOLTAGE 5.5.2, 5.7.6
READ OUTPUT FREQUENCY (INDICATOR) 5.5.2, 5.7.6
READ OUTPUT CURRENT 5.5.2, 5.7.6
SELECT LOCAL or REMOTE OPERATION 5.1
SELECT METERING SENSE POINT (INTERNAL, EXTERNAL) 5.4.2
SET CSC (CONTINUOUS SELF CALIBRATION) 5.4.2
SET GPIB DEVICE ADDRESS 4.6.3.3
SET MIN/MAX FREQUENCY RANGE 5.4.1
SET OUTPUT POWER FORM 5.4.2
SET OUTPUT CURRENT LIMIT 5.4.1
SET OUTPUT PHASE ANGLES 5.4.1
SET OUTPUT COUPLING (XFMR OR DIRECT) 5.4.2
SET OUTPUT FREQUENCY 5.4.1
SET FREQUENCY LIMITS 5.4.1
SET OUTPUT VOLTAGE 5.4.1
SET VOLTAGE LIMITS 5.4.1
SET OUTPUT WAVEFORM 5.4.1
SET PROGRAMMABLE OUTPUT IMPEDANCE 5.4.1
SET TRANSITION TIME 5.4.1

SECTION 1 GENERAL
viii
THIS PAGE INTENTIONALLY BLANK

SECTION 1 GENERAL
1
SECTION 1
GENERAL
1 GENERAL
This Operations Manual is written to provide the information required to use the Universal Programmable
Controller (UPC) and System Control Unit (SCU). Installation, operation, programmable command
syntax, and calibration are the subjects covered by this manual.
This manual is to be used with the programmable controller models: UPC-3 or UPC-1; or the manual
operation controller models: UPC-3M or UPC-1M. These may be installed in the SCU (System Control
Unit), or directly into one of Pacific Power Source’s ASX models.
1.1 USING THIS MANUAL
It is very important to read SECTION 4 (Front Panel Operation) prior to using this equipment. A
thorough understanding of that information is required to properly operate this equipment. If the UPC will
be used under REMOTE CONTROL via serial port or GPIB, then also read SECTION 5 (REMOTE
OPERATION) which describes the communication protocol and commands. If the RS-232 serial
interface is to be used, Section 10 (RS-232 SERIAL Interface) describes the serial specifications and
setup.
The "HOW TO" pages immediately following the Table of Contents are a helpful reference for the first
time user as well as the experienced user. Also very helpful is the "QUICK OVERVIEW" section 4.1.1
and "QUICKLY PUTTING THE UNIT TO USE" section 4.1.2. Remote-interface users will find the
"REMOTE INTERFACE FUNCTION REFERENCE" to be helpful.
1.2 SAFETY NOTICES
The UPC-Series of equipment controls the AMX, ASX, MS, and G Series of power sources which are
capable of transferring very large amounts of electrical energy very quickly. This basic quality is
fundamental to any high-performance power source. The warnings and cautions listed below should be
observed at all times.
WARNINGS indicate potentially hazardous situations which, if not avoided, could cause serious injury
or death. All warnings throughout this manual will be formatted as shown on the following page. A
condition which is hazardous to both personnel and equipment will be issued as a warning.
CAUTION statements indicate a potentially hazardous situation which, if not avoided, may cause
minor or moderate injury or damage to the equipment. Cautions will assume the format shown. All
cautions should be rigorously observed

SECTION 1 GENERAL
2
1.2 SAFETY NOTICES (cont)
WARNING
THIS EQUIPMENT CONTAINS HIGH ENERGY, LOW IMPEDANCE CIRCUITS!! LETHAL
POTENTIALS ARE CONTAINED WITHIN THE CABINET.
CARE MUST BE EXERCISED WHEN SERVICING THIS EQUIPMENT IN ORDER TO PREVENT
SERIOUS OPERATOR INJURY OR EQUIPMENT DAMAGE.
VOLTAGE AT THE TERMINALS RESPONDS INSTANTLY WHEN THE OUTPUT IS ACTIVATED.
OBSERVE THE FOLLOWING WHEN SERVICE, MAINTENANCE, OR CALIBRATION ARE REQUIRED:
1) REMOVE ALL JEWELRY FROM HANDS, ARMS AND NECK WHEN SERVICING THIS
EQUIPMENT. THIS PREVENTS THE POSSIBILITY OF SHORTING THROUGH THE
JEWELRY AND CAUSING BURNS OR ELECTROCUTION OF THE OPERATOR.
2) WEAR SAFETY GLASSES WHEN SERVICING THIS EQUIPMENT TO PREVENT EYE INJURY
DUE TO FLYING PARTICLES CAUSED BY ACCIDENTAL SHORT CIRCUIT CONDITIONS.
3) DO NOT REMOVE ANY PANEL OR COVER WITHOUT FIRST REMOVING THE INPUT
SERVICE BY OPENING ALL CIRCUIT BREAKERS.
4) SERVICE OTHER THAN EXTERNAL CLEANING SHOULD BE REFERRED TO PERSONNEL
AUTHORIZED BY THE FACTORY TO SERVICE THIS EQUIPMENT.
WARNING
IF THIS EQUIPMENT IS NOT USED IN A MANNER SPECIFIED BY THE
MANUFACTURER, THE PROTECTION PROVIDED BY THE EQUIPMENT MAY BE
IMPAIRED
!
!

SECTION 1 GENERAL
3
1.2 SAFETY NOTICES (cont)
To protect equipment from damage, a Caution will be used as follows:
CAUTION
USING IMPROPER GAUGE OF INPUT CABLE MAY OVERHEAT AND DAMAGE THE
EQUIPMENT. SEE SECTION 2.0, SPECIFICATIONS, FOR THE PROPER
SIZING OF INPUT CABLE.
ALWAYS MAKE SURE THAT THE OUTPUT ON/OFF SWITCH
IS IN THE OFF POSITION BEFORE CHANGING
THE OUTPUT COUPLING MODE. LOAD MAY BE DAMAGED DUE TO EXCESSIVE OUTPUT
VOLTAGE
CAUTION -
Read Section 3, INSTALLATION, Section 4, OPERATION, and Section
7, SERVICE of this manual before installing or operating this
equipment.
1.3 GENERAL PRODUCT DESCRIPTION
1.3.1 UPC DESCRIPTION
The UPC controller is a highly versatile one, two, or three phase signal generator. It is designed to be
installed into Pacific Power Source's ASX Series Power Sources or into a System Control Unit for use
with other power sources. The UPC is designed for use with any of Pacific Power Source, Inc.’s AC
Power Sources and is interchangeable with other UPC/UMC Series controllers.
The user may store up to 99 “Programs” in battery backed-up RAM. Each program contains steady-
state parameters and may include transient values as well. There are also pre-stored programs that
simplify generation of MIL-STD 704D transients.
Auxiliary and Amplitude Modulation inputs are provided to allow control of the power source output from
a variety of external control sources. The AUX inputs will accept signals from a waveform generator.
The AM inputs allow control of the output amplitude by a DC control voltage.
!
!

SECTION 1 GENERAL
4
1.3.1 UPC DESCRIPTION (cont’d)
The signal generation section produces one (UPC-1) or three (UPC-3) output signals representing the
output phase waveforms of the power source. The UPC controllers produce steady-state signals - a
base set of volts, frequency, waveforms and phase angle - and dynamic signals in which parameters
change with time. Dynamically the signal generator can produce transient events lasting from
microseconds to hours.
•Each signal can be any of the 22 waveforms stored in memory.
•Waveform 1 is a sine wave and cannot be altered; the other 21 waveforms can be altered by the
user to produce any arbitrary wave function.
•The phase angle relation between the three output vectors may be varied.
•The voltage amplitude of each vector may be varied together or independently.
•The frequency of all output vectors is the same and is controllable from 15 to 1200 Hz.
The Display of the UPC utilizes a 160 character Backlit LCD, which selectively displays operating
parameters or displays menus which interactively prompt the operator and assist in loading programs or
editing. On completion of any programming or editing function, the display automatically reverts to the
metering display.
Complete parameter metering is provided by the UPC. Output volts (line-to-line and line-to-neutral),
current (true RMS, peak, and crest factor), KVA, KW, and Power Factor can all be displayed. Frequency
is indicated based on the set value. Internal or External voltage metering sense points can be selected.
Internal metering displays the output voltage as metered at a point prior to the Output Relays. This
allows the output voltage to be checked prior to applying power to a load. External metering allows the
output voltage to be monitored at a remote point outside of the power source. With CSC enabled (see
below), external sense can be used to maintain an accurate voltage at any remote point, compensating
for line voltage drops.
The CSC (Continuous Self Calibration) feature provides automatic compensation for real losses due to
output transformers and distribution lines by maintaining an accurate COMMAND (program) voltage at
the metered sense point. CSC may be enabled or disabled at the user's discretion.
Externally referenced Output Gain and Metering calibration is simplified by internal software that allows
external measurements to be entered directly into the front panel or Remote Interface. Correction values
(kFactors) are then calculated and stored in the UPC's memory.
An output transformer ratio may be programmed into the UPC for controlling and metering voltages
outside of the power source direct coupled range.
A Programmable Current limit value can be set.
A unique feature available within the UPC is TRANSITION TIME. If Transition time is set to a non-zero
value, and a new program is executed, or changes are made in MANUAL MODE (or by REMOTE
CONTROL), the UPC will take the specified time to transition from the active voltage and frequency to
the new voltages and frequency. This feature may be used when it is undesirable to cause abrupt
changes to the output power signal. This feature does not affect transient operation. Transition time may
be set from 0 to 300 seconds in increments as small as 200 uSec.
Waveform analysis functions can be optionally provided to report both magnitude and phase angle of
each harmonic for metered voltage and current waveforms. THD, ODD and EVEN harmonic distortion
measurement data is also reported.

SECTION 1 GENERAL
5
PA CI FI C
Figure 1.3a SCU/UPC-3
Figure 1.3b UPC-3
Figure 1.3c UPC-1

SECTION 1 GENERAL
6
1.3.1 UPC DESCRIPTION (cont)
The Programmable Output Impedance option (ProgZo) provides the ability to compensate for dynamic
losses in the output circuit by effectively controlling the output impedance of the power source and
responding in real time to changes in the output current. This feature is also known as Current
Compensation.
The UPC may be used in Local (front panel) or Remote (RS-232 SERIAL or optional GPIB) control. RS-
232 serial port interface is the standard interface configuration and is IEEE-488.2 and SCPI command
format compatible. The optional GPIB interface is fully IEEE-488.1, IEEE-488.2 and SCPI compatible.
Metered voltage and current waveform data (digitized waveforms) can be retrieved via the REMOTE
interface.
1.3.2 CONTROLLER MODELS
The term 'UPC' is derived from Universal Programmable Controller.
The UPC-3 is a 3Φsignal generator designed to plug in to any PACIFIC AMX/ASX Series chassis which
is 1Φ/ 2Φ/ 3Φcapable.
The UPC-1 is identical in characteristics to the UPC-3, except that it produces only one output signal. It
is designed to plug in to any single-phase-only PACIFIC AMX or ASX model power source.
The UPC-3M and UPC-1M are manually operated controller versions with no programming capability.
1.3.3 SCU DESCRIPTION
The System Control Unit is a 19 inch wide, 5.25 inch high, 7 inch deep rack mounted box with a power
supply and connector interfaces, to support a UPC. This allows the UPC to be remotely located from the
power source.
The SCU provides a suitable housing for the controller for applications requiring a controller remotely
located from the power source. The complete designation for a "stand-alone" controller housing a UPC-
3 is SCU/UPC-3. Such a unit can drive some of the larger PACIFIC AMX or ASX power sources through
their rear panel interface. A typical usage might be to locate the power source at the base of an
instrument rack, with the controller installed in an upper slot at a more convenient eye level or even in a
completely different location.

SECTION 2 SPECIFICATIONS
7
SECTION 2
SPECIFICATIONS
2 SPECIFICATIONS
This section states the specifications of both Output Control and Metering capabilities of the UPC.
Environmental Ambient operating conditions are as follows.
Temperature 0-50ºC.
Humidity 0-95% R.H Non-Condensing.
2.1 CONTROL SPECIFICATIONS
2.1.1 FREQUENCY CONTROL SPECIFICATIONS
The UPC output frequency is variable from 15 to 1200 Hz. Internally, there are 3 FREQUENCY SPAN
ranges, each with a different resolution as determined by the number of digitized steps in the output
waveform and in the metering data. To change FREQUENCY SPAN, see 4.5.3.2.
FREQUENCY SPAN WAVEFORM STEPS METERING SAMPLES
15.00 – 150 Hz. 1024 512
15.00 – 300 Hz. 512 256
15.00 – 600 Hz. 256 128
15.00 – 1200 Hz. 128 64
Accuracy is ±0.01% of full scale over the full range of ambient conditions.
A unique feature available within the UPC is TRANSITION TIME. If Transition time is set to a non-zero
value, and a new program is executed, or changes are made in MANUAL MODE (or by REMOTE
CONTROL), the UPC will take the specified time to transition from the active voltage and frequency to
the new voltages and frequency. This feature may be used when it is undesirable to cause abrupt
changes to the output power signal. This feature does not affect transient operation. Transition time may
be set from 0 to 300 seconds in increments as small as 200 uSec.

SECTION 2 SPECIFICATIONS
8
2.1.2 VOLTAGE CONTROL SPECIFICATIONS
The voltage amplitude of each vector can be varied independently.
There are two output coupling modes selectable in the stored programs of the UPC.
1) DIRECT COUPLED MODE:
Range: 0 to 150 VAC rms
Resolution: 0.1 volts
Output Ratio 1.0 (This mode is internally fixed)
2) TRANSFORMER COUPLED MODE:
Range: 0 to (150 x XFMR RATIO) VAC rms (maximum of 600 volts)
Resolution: dependent upon the TRANSFORMER RATIO as described below. This allows
for a possible output voltage of up to 375 VAC rms line-neutral, using an output
TRANSFORMER RATIO of 2.5.
The voltage range available at any given time is automatically calculated by the UPC and accounts for
the Transformer Ratio setting. The power source will be driven with the correct amplitude signal and
does NOT require the user to perform any calculations to determine output voltage dependant upon the
transformer ratio.
The UPC allows the Power Source to use any output TRANSFORMER RATIO from 0.05 to 5.00.
Voltage resolution for TRANSFORMER COUPLED MODE is as follows:
XFMR RATIO Vresolution
.05 - 1.00 0.1 VAC rms
1.01 - 5.00 0.5 VAC rms
The TRANSFORMER RATIO value may be changed by entering a new value in the UPC STATUS
screen and in the program to be executed. The power source must have an output transformer
configured with the same ratio as presently set for this feature to work properly.
TRANSFORMER RATIOs greater than 1.0 are step-up types.
TRANSFORMER RATIOs less than 1.0 are step-down types.
Accuracy is ± 0.5% of full scale over the range of ambient conditions with CSC disabled.
Accuracy is ± 0.05% of the voltage referenced to the internal voltmeter with CSC enabled.
NOTE:TRANSFORMER RATIOs are implied as a ratio to one, e.g.; a ratio of 2.5 is implied as a ratio of
2.5:1.
NOTE:The above voltages are power source output voltages. The UPC actually produces an RMS
voltage equal to (Power source output Vrms / 25 / TRANSFORMER RATIO). The SCU provides this
type of low voltage output at the rear panel connector, to be fed into a power source.
A unique feature available within the UPC is TRANSITION TIME. If Transition time is set to a non-zero
value, and a new program is executed, or changes are made in MANUAL MODE (or by REMOTE
CONTROL), the UPC will take the specified time to transition from the active voltage and frequency to
the new voltages and frequency. This feature may be used when it is undesirable to cause abrupt
changes to the output power signal. This feature does not affect transient operation. Transition time may
be set from 0 to 300 seconds in increments as small as 200 uSec.