Powerten 3300I Series Owner's manual

PowerTen
9250 Brown Deer Road
San Diego, CA 92121-2294
1-800-978-6680
Tel: [phone]
Fax: [phone]
Email: [email protected]
www.powerten.com
3300I Series
DC Power Supplies
IEEE 488.2
Programming Manual
January 11, 2002 Document No. M520087-01 Rev A
©2002 by PowerTen. This document contains information proprietary to PowerTen. The information contained
herein is not to be duplicated or transferred in any manner without prior written permission from PowerTen.

M520087-01 ii
Safety Notice
Before applying power to the system, verify that the unit is configured properly for the user's
particular application.
The 3300I series of power supplies is intended for rack mounted application only. Use of the
power supplies outside of a rack mount enclosure will expose the user to high voltage and/or
high current sources. Extreme caution must be used under these circumstances.
The analog control inputs (connectors J1 and J2) on the rear panel are referenced to the
negative output of the power supply. Grounding the positive output of the power supply or
biasing the output of the supply above chassis potential will cause these inputs (along with the
output of the supply) to have a potentially hazardous offset voltage. Exercise caution under
these conditions. Under no circumstances should the output of the supply be biased more than
500 volts from chassis potential.
Installation and service must be performed only by properly trained and qualified
personnel who are aware of dealing with attendant hazards. This includes simple tasks
such as fuse verification.
Ensure that the AC power line ground is connected properly to the unit input connector
or chassis. Similarly, other power ground lines including those to application
maintenance equipment must be grounded properly for both personnel and equipment
safety.
Always ensure that facility AC input power is de-energized prior to connecting or disconnecting
the input/output power cables.
Warning: Lethal voltages may be present inside the power supply even when the AC input
voltage is disconnected. Only properly trained and qualified personnel should
remove covers and access the inside of the power supply.
During normal operation, the operator does not have access to hazardous voltages within the
chassis. However, depending on the user's application configuration, HIGH VOLTAGES
HAZARDOUS TO HUMAN SAFETY may be generated normally on the output terminals.
Ensure that the output power lines are labeled properly as to the safety hazards and that any
inadvertent contact with hazardous voltages is eliminated.
Due to filtering, the unit has high leakage current to the chassis. Therefore, it is essential to
operate this unit with a safety ground.
This unit is designed to be permanently connected to the power source and as such must have
a readily accessible disconnect device incorporated in the fixed wiring.
After the unit has been operating for some time, the metal near the rear of the unit may be hot
enough to cause injury. Let the unit cool before handling.
These operating instructions form an integral part of the equipment and must be available to the
operating personnel at all times. All the safety instructions and advice notes are to be followed.
Neither Power Ten nor any of the subsidiary sales organizations can accept responsibility for
personal, material or consequential injury, loss or damage that results from improper use of the
equipment and accessories.

M520087-01 iii
SERVICE SAFETY NOTICES
WARNING!
HAZARDOUS VOLTAGES IN EXCESS OF 480 V
RMS, 700 V PEAK MAY BE PRESENT WHEN
COVERS ARE REMOVED. QUALIFIED
PERSONNEL MUST USE EXTREME CAUTION
WHEN SERVICING THIS EQUIPMENT. CIRCUIT
BOARDS, TEST POINTS, AND OUTPUT
VOLTAGES MAY BE FLOATING ABOVE
CHASSIS GROUND.
WARNING!
TO GUARD AGAINST RISK OF ELECTRICAL
SHOCK DURING OPEN COVER CHECKS, DO
NO TOUCH ANY PORTION OF THE
ELECTRICAL CIRCUITS. EVEN WHEN THE
POWER IS OFF, CAPACITORS CAN RETAIN AN
ELECTRICAL CHARGE. USE SAFETY
GLASSES DURING OPEN COVER CHECKS TO
AVOID PERSONAL INJURY BY ANY SUDDEN
FAILURE OF A COMPONENT.
WARNING!
SOME CIRCUITS ARE LIVE EVEN WITH THE
FRONT PANEL SWITCH TURNED OFF.
SERVICE, FUSE VERIFICATION, AND
CONNECTION OF WIRING TO THE CHASSIS
MUST BE ACCOMPLISHED AT LEAST FIVE
MINUTES AFTER POWER HAS BEEN REMOVED
VIA EXTERNAL MEANS; ALL CIRCUITS AND/OR
TERMINALS TO BE TOUCHED MUST BE
SAFETY GROUNDED TO THE CHASSIS.
WARNING!
QUALIFIED SERVICE PERSONNEL NEED TO
BE AWARE THAT SOME HEAT SINKS ARE NOT
AT GROUND, BUT AT HIGH POTENTIAL.

M520087-01 iv
FCC NOTICE
This equipment has been tested and found to
comply with the limits for a Class A digital device,
pursuant to part 15 of the FCC Rules. These limits
are designed to provide reasonable protection
against harmful interference when the equipment is
operated in a commercial environment. This
equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in
accordance with the instruction manual, may cause
harmful interference to radio communications.
Operation of this equipment in a residential area is
likely to cause harmful interference in which case
the user will be required to correct the interference
at his own expense.

M520087-01 v
About This Manual
This manual has been written expressly for the Power Ten 3300I Series of power supplies.
SAFETY SYMBOLS
CAUTION Protective Conductor Terminal
Risk of Electrical Shock
CAUTION Alternating Current (AC)
Refer to Accompanying Documents

M520087-01 vi
TABLE OF CONTENTS
Chapter 1 DESCRIPTION OF EQUIPMENT___________________________________1-1
1.1 PURPOSE AND CAPABILITIES _______________________________________________1-1
1.2 TECHNICAL CHARACTERISTICS_____________________________________________1-1
Chapter 2 INSTALLATION _________________________________________________2-1
2.1 INSPECTION _______________________________________________________________2-1
2.2 INPUT/OUTPUT CONNECTORS ______________________________________________2-1
2.3 LOCATION AND MOUNTING ________________________________________________2-1
2.4 WIRE SIZING ______________________________________________________________2-1
2.5 OUTLING DRAWINGS ______________________________________________________2-1
Chapter 3 OPERATING INSTRUCTIONS _____________________________________3-3
3.1 CONTROLS AND INDICATORS_______________________________________________3-3
3.2 SETUP AND OPERATING INSTRUCTIONS _____________________________________3-3
3.3 OUTPUT OVERVOLTAGE PROTECTION ______________________________________3-5
3.4 IEEE 488.2 _________________________________________________________________3-5
3.5 IEEE 488.2 FUNCTION_______________________________________________________3-8
Chapter 4 MAINTENANCE AND CALIBRATION ______________________________4-1
4.1 INTRODUCTION ___________________________________________________________4-1
4.2 PREVENTIVE MAINTENANCE _______________________________________________4-1
4.3 CALIBRATION AND ADJUSTMENTS__________________________________________4-3

M520087-01 vii
LIST OF FIGURES
FIGURE 2-1 OUTLINE DRAWING, 3300I SERIES................................................................. 2-2
FIGURE 3-1 SERIES 3300I CONTROL AND INDICATORS................................................... 3-3
FIGURE 3-2 ADDRESS SWITCH........................................................................................... 3-8
FIGURE 3-3 BLOCK DIAGRAM OF HARDWARE CONFIGURATION ..................................3-10
LIST OF TABLES
TABLE 1-1 3300I SERIES ELECTRICAL CHARACTERISTICS............................................. 1-2
TABLE 1-2 3300I SERIES OUTPUT CHARACTERISTICS .................................................... 1-4
TABLE 1-3 3300I SERIES IEEE CHARACTERISTICS........................................................... 1-1
TABLE 2-1 OUTPUT CONNECTION DESCRIPTIONS .......................................................... 2-2
TABLE 2-2 INPUT CONNECTION DESCRIPTIONS.............................................................. 2-2
TABLE 2-3 3300I SERIES INPUT/OUTPUT CONNECTORS................................................. 2-2
TABLE 2-4 MINIMUM WIRE SIZETABLE............................................................................... 2-1
TABLE 3-1 SERIES 3300I CONTROLS AND INDICATORS .................................................. 3-4
TABLE 4-1 PREVENTIVE MAINTENANCE SCHEDULE........................................................ 4-1
TABLE 4-2 INSPECTION AND CORRECTIVE ACTION......................................................... 4-2

M520087-01 1-1
Chapter 1
DESCRIPTION OF EQUIPMENT
1.1 PURPOSE AND CAPABILITIES
The Power Ten 3300I Series power supply is general purpose power supply designed
specifically for laboratory test and systems applications requiring variable DC sources with good
regulation and low output ripple characteristics. The Series 3300I power supply is constant
current/constant voltage power supplies with an automatic crossover feature. It provides up to
1000 watts of DC power over a wide range of voltage and current levels.
1.2 TECHNICAL CHARACTERISTICS
The characteristics for the IEEE aspects of the 3300I Series are listed in Tables 1-1 through
1-3.

M520087-01 1-2
Table 1-1
3300 Series Electrical Characteristics
PARAMETERS SPECIFICATIONS
PHYSICAL CHARACTERISTICS:
Width
Depth
Height
Weight
ELECTRICAL CHARACTERISTICS:
Input Power (Standard)
Voltage
Frequency
Phases
Regulation (Line or Load)
Voltage
Current
Noise and Ripple (RMS)
Transient Response
Stability
Remote Control/Monitor
Power Density
Power Factor
Total Harmonic
19.00 in.
18.50 in
1.75 in.
15 lb. max.
95 to 127 VAC, 190 to 253 VAC (Option)
47 to 63 Hz
Single, 2-wire plus gnd
0.1% of max. output voltage
0.1% of max. output current
30 mV max.
A 30% step load will recover to within 2%
of original value within 10 ms.
+
0.05% of set point per 8 hr. after warm-up
and at a fixed line, load and temperature.
On/Off control via contact closure,
6-120 VDC or 12-240 VAC.
2.5 Watts/cubic in.
.99 min. at full load
2.5% max.

M520087-01 1-3
Table 1-1
3300I Series Electrical Characteristics - Continued
PARAMETERS SPECIFICATIONS
Remote Programming
Resistive:
Constant Voltage (0-100%)
Constant Current (0-100%)
Voltage:
Constant Voltage (0-100%)
Constant Current (0-100%)
Current:
Constant Voltage (0-100%)
Constant Current (0-100%)
Remote Sensing
ENVIRONMENTAL
CHARACTERISTICS:
Temperature Coefficient
Ambient Temperature
Operating
Storage
Cooling
0 - 5k ohms
0 - 5k ohms
0 - 5 VDC
0 - 100 mV
0 - 1 mA
0 - 1 mA
Terminals are provided to sense output
voltage at point of load. Maximum line drop
3% of rated voltage per line.
0.02%/°C of max. output voltage rating for
voltage set point.
0.03%/°C of max. output current rating for
current set point.
0 to 50°C
-40°to 75°C
Internal blowers

M520087-01 1-4
Table 1-2
3300I Series Output Characteristics
MODEL NUMBER
OUTPUT DC
VOLTS
OUTPUT DC
AMPS
OUTPUT
RIPPLE (RMS)
7.575
7.5125
1060
10100
2030
2050
3020
3033
4015
4025
5020
6010
6016
8006
8012
10010
1208
1507
0-7.5
0-7.5
0-10
0-10
0-20
0-30
0-30
0-30
0-40
0-40
0-50
0-60
0-60
0-80
0-80
0-100
0-120
0-150
75
125
60
100
30
50
20
33
15
25
20
10
16
6
12
10
8
7
30 mV
30 mV
30 mV
30 mV
30 mV
30 mV
30 mV
30 mV
30 mV
30 mV
30 mV
30 mV
30 mV
50 mV
50 mV
50 mV
50 mV
50 mV

M520087-01 1-1
Table 1-3
3300I Series IEEE Characteristics
PARAMETERS SPECIFICATIONS
REMOTE CONTROL - IEEE 4888.2
Data Rate
Interconnection Path
Cable Length
ELECTRICAL CHARACTERISTICS:
Data-Transfer Format
Primary Address
Maximum Devices
Remote Sensing
Resolution
Accuracy
Voltage ±0.03% ±0.1%
Current ±0.03% ±0.1%
1 M byte/second
Star, daisy chain, or linear network
2 Meters per device (max.)
Byte-serial, bit-parallel using asynchronous
3-wire handshakes
31 TALK, 31 LISTEN
1 Talker and 14 Listeners at one time
Terminals are provided to sense output
voltage at point of load.

M520087-01 2-1
Chapter 2
INSTALLATION
2.1 INSPECTION
Inspect the shipping carton for possible damage before unpacking the unit. Carefully unpack
the equipment. Save all packing materials until inspection is complete. Verify that all items
listed on the packing slips have been received. Visually inspect all exterior surfaces for broken
knobs, connectors or meters. Inspect for dented or damaged exterior surfaces. External
damage may be an indication of internal damage. If any damage is evident, immediately
contact the carrier that delivered the unit and submit a damage report. Failure to do so could
invalidate future claims.
2.2 INPUT/OUTPUT CONNECTORS
Table 2-1 lists all external connections for the 3300I Series models.
For permanently connected equipment, a readily accessible disconnect device shall be incorporated in
the fixed wiring. For pluggable equipment, the socket outlet shall be installed near the equipment and
shall be easily accessible.
2.3 LOCATION AND MOUNTING
The 3300I Series models are intended for mounting in a standard 19.0-inch equipment rack.
Four captive screws, two on each side of the front panel, are used to secure the unit in place.
Optional slide mounting is available.
NOTICE
The unit should be provided with
proper ventilation. The top, rear and
both sides of the unit should be free
of obstructions.
Follow the instructions in paragraph 3.1.1 for setup and operation of the equipment.

M520087-01 2-2
Table 2-1
Output Connection Descriptions
SUPPLY TYPE CONNECTION DESCRIPTION
Output <=60V
Output >=80V
Bus Bar with hole for 1/4” bolt
Terminal Block with 6-32 screws
Table 2-2
Input Connection Descriptions
SUPPLY TYPE CONNECTION DESCRIPTION
3300, 3300I
Terminal Block with 6-32 screws
Table 2-3
3300I Series Input/Output Connectors
CONNECTOR FUNCTION CONNECTS TO
TB2 - AC
TB2 - AC
CHASSIS - GND
Pos. Bus Bar
Neg. Bus Bar
GND Stud
IEEE-488 Connector
Prime Power Input (Std)*
Prime Power Input (Std)*
Output Power
Output Power
IEEE-488 Connector
95 to 127 VAC
47 to 63 Hz
Power Source
User load(s)
User Load(s)
Standard IEEE-488
cable
*190 to 253 VAC is available as a factory option

M520087-01 2-1
2.4 WIRE SIZING
Care must be taken to properly size all conductors for the input and output of the power supply.
Table 2-5 below gives minimum recommended wire size for the input. This table is derived
from the National Electrical Code and is for reference only. Local laws and conditions may
have different requirements. The table is for copper wire only.
Table 2-4
Minimum Wire SizeTable
2.5 OUTLING DRAWINGS
The following page (figure 2-1) shows the outlines and overall dimensions for 3300 product line.
SIZE 60 °C 75 °C 85 °C 90 °C
TYPES TYPES TYPES TYPES
AWG
MCM
RUW, T, TW,
UF FEPW, RH, RHW, RUH,
THW, THWN,
XHHW, USE,
ZW
V, MI TA, TBS, SA,
AVB, SIS, FEP,
FEPB, RHH,
THHN, XHHW
14 20 20 25 25
12 25 25 30 30
10 30 35 40 40
840505555
655657075
470859595
3 85 100 110 110
2 95 115 125 130
1 110 130 145 150
0 125 150 165 170
TEMPERATURE RATING OF COPPER CONDUCTOR
CURRENT RATING

M520087-01 2-2
Figure 2-1
Outline Drawing, 3300I Series
19.00
1.75
0.125
18.15
16.75 1.00
POS
NEG
TB2
Ø0.25 2 PL

M520087-01 3-3
Chapter 3
OPERATING INSTRUCTIONS
3.1 CONTROLS AND INDICATORS
Front panel controls and indicators for the 3300I Series are identified in Figure 3-1 with index
numbers keyed to Table 3-1. Table 3-1 provides a description of all operator controls and
indicators.
3.2 SETUP AND OPERATING INSTRUCTIONS
The following paragraphs provide setup and operating procedures for the 3300I Series.
The power supply may be configured via TB1 for different operating configurations; local and
remote sensing is provided using switch S1 in the back of the unit. Placing the switch S1 in the
REM position enables the power supply to sense the output voltage at the point of the load and
compensate for any voltage drop across the bus bars or the output cables. The load must be
wired to TB1 (Vs+, Vs-) for remote sensing.
Figure 3-1
Series 3300I Control and Indicators

M520087-01 3-4
Table 3-1
Series 3300I Controls and Indicators
FIGURE &
INDEX NO
CONTROL/INDICATOR
FUNCTION
3-1
1
2
3
4
5
6
7
8
9
10
Circuit Breaker
POWER Switch
VOLTAGE Meter
Voltage Mode Indicator
Current Mode Indicator
CURRENT Meter
OVERVOLTAGE Indicator
Overvoltage Potentiometer
Output Current Control
Output Voltage Control
Provides fault protection
Applies AC power to the power supply.
Measures voltage output
Indicates the power supply
is operating in the voltage mode.
Indicates the power supply is
operating in the voltage mode.
Measures current output
Indicates output voltage has exceeded
preset level and power supply output
is turned off.
Adjusts overvoltage trip level.
Adjusts current control to desired
level.
Adjusts voltage control to desired
level.

M520087-01 3-5
3.3 OUTPUT OVERVOLTAGE PROTECTION
If the power supply is equipped with an overvoltage crowbar, the front panel will contain
overvoltage adjustment. This potentiometer may be adjusted through an access hole in the
front panel.
For trip levels less than the maximum output voltage or to check the overvoltage circuitry,
perform the following procedure.
1. Set the potentiometer fully clockwise.
2. Adjust the power supply output voltage to the desired trip level.
3. Slowly adjust the potentiometer counterclockwise until
overvoltage is tripped.
3.4 IEEE 488.2
The mode switch (S2), located on the rear panel, is used to switch between the manual mode
and the IEEE mode. The power supply must be OFF when switching from one mode to the
other.
Below are two lists of commands: (1) Programmable Set Functions which can be sent to the
GPIB power supply, and (2) Read Back Functions which enable the available data to be read
back.
Programmable Set Functions
Read Back Functions
Output On/Off
Set Output Voltage
Set Output Current
Maximum Rated Voltage
Maximum Rated Current
Wait to Complete Operation
Reset Power Supply State
Actual Voltage
Actual Current
Read ID
Read Status Register
Read Operation Complete
Self-Test Error Code