KEPCO MAT 1-3 Rack User Manual
SERVICE MANUAL
MAT 1/3 RACK (EXCEPT 6-32)
POWER SUPPLY
KEPCO INC.
An ISO 9001 Company.
MAT 1/3 RACK
(EXCEPT 6-32)
MODEL
POWER SUPPLY
ORDER NO. REV. NO.
This on-line version of the Technical Manual
includes only Installation and Operating
Instructions. For the complete manual,
please contact Kepco.
©2004, KEPCO, INC
P/N 243-
KEPCO, INC. ! 131-38 SANFORD AVENUE ! FLUSHING, NY. 11352 U.S.A. ! TEL (718) 461-7000 ! FAX (718) 767-1102
KEPCO®
THE POWER SUPPLIER™
email: hq@kepcopower.com ! World Wide Web: http://www.kepcopower.com
Declaration of Conformity
Application of Council directives:
Standard to which Conformity is declared:
EN61010-1:2001 (Safety requirements for electrical equipment for measurement,
control and laboratory use - Part 1)
Manufacturer's Name and Address:
Importer's Name and Address:
Type of Equipment:
Model No.:
73/23/EEC (LVD)
93/68/EEC (CE mark)
KEPCO INC.
131-38 SANFORD AVENUE
FLUSHING, N.Y. 11352 USA
P
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Component Power Supply
[PRODUCT MODEL NUMBER]
Y
Year of Manufacture:
I, the undersigned, declare that the product specified above, when used in conjunction with the conditions of conformance set forth in the product instruction manual, complies with the requirements of the
Low Voltage Directive 73/23/EEC, which forms the basis for application of the CE Mark to this product.
Place: KEPCO Inc.
131-38 Sanford Ave.
Flushing, N.Y.11352 USA
Saul Kupferberg
(Full Name)
Date:
228-1348 DC-COMP/INST 112404
VP OF SALES
(position)
A
Conditions of Conformance
When this product is used in applications governed by the requirements of the EEC, the following restrictions and conditions apply:
1. For European applications, requiring compliance to the Low Voltage Directive, 73/23/EEC, this power
supply is considered a component product, designed for "built in“ applications. Because it is incomplete in construction, the end product enclosure must provide for compliance to any remaining electrical safety requirements and act as a fire enclosure. (EN61010-1:2001, Cl. 6, Cl. 7, Cl.8, and Cl. 9)
2. This power supply is designed for stationary installation within an RA 50 or RA 51 rack adapter. Mains
power is supplied via a detachable power supply cord or via direct wiring to the source power terminal
block.
3. This power supply is considered a Class 1 (earthed) product. It is intended for use as part of equipment meant for test, measurement and laboratory use, and is designed to operate from single phase,
three wire power systems. This equipment must be installed within a suitably wired equipment rack,
utilizing a three wire (grounded) mains connection. See wiring section of this manual for complete
electrical wiring instructions. (EN61010-1:2001, Cl.6.10.1)
4. This power supply has secondary output circuits that are considered hazardous, and which exceed
240 VA at a potential of 2V or more.
5. The output wiring terminals of this power supply have not been evaluated for field wiring and, therefore, must be properly configured by the end product manufacturer prior to use.
6. This power supply employs a supplementary circuit protector in the form of a circuit breaker mounted
on the front panel. This circuit breaker protects the power supply itself from damage in the event of a
fault condition. For complete circuit protection of the end product, as well as the building wiring, it is
required that a primary circuit protection device be fitted to the branch circuit wiring. (EN610101:2001, Cl. 9.5)
7. Hazardous voltages are present within this power supply during normal operation. All operator adjustments to the product are made via externally accessible switches, controls and signal lines as specified within the product operating instructions. There are no user or operator serviceable parts within
the product enclosure. Refer all servicing to qualified and trained Kepco service technicians.
B
228-1373 COND/CONFORM 112404
SAFETY INSTRUCTIONS
1. Installation, Operation and Service Precautions
This product is designed for use in accordance with EN 61010-1 and UL 3101 for Installation Category 2,
Pollution Degree 2. Hazardous voltages are present within this product during normal operation. The
product should never be operated with the cover removed unless equivalent protection of the operator
from accidental contact with hazardous internal voltages is provided:
!
!
!
There are no operator serviceable parts or adjustments within the product enclosure.
Refer all servicing to trained service technician.
Source power must be removed from the product prior to performing any servicing.
This product is factory-wired for the nominal a-c mains voltage indicated on the rating nameplate located adjacent to the source power connection on the product's rear
panel. To reconfigure the product input for other nominal mains voltages as listed
herein, the product must be modified by a trained service technician.
2. Grounding
This product is a Class 1 device which utilizes protective earthing to ensure operator safety.
The PROTECTIVE EARTHING CONDUCTOR TERMINAL must be properly con-
!
nected prior to application of source power to the product (see instructions on installation herein) in order to ensure safety from electric shock.
PROTECTIVE EARTHING CONDUCTOR TERMINAL - This symbol indicates the
point on the product to which the protective earthing conductor must be attached.
EARTH (GROUND) TERMINAL - This symbol is used to indicate a point which is
connected to the PROTECTIVE EARTHING TERMINAL. The component installer/
assembler must ensure that this point is connected to the PROTECTIVE EARTHING TERMINAL.
CHASSIS TERMINAL -This symbol indicates frame (chassis) connection, which is
supplied as a point of convenience for performance purposes (see instructions on
grounding herein). This is not to be confused with the protective earthing point, and
may not be used in place of it.
3. Electric Shock Hazards
This product outputs hazardous voltage and energy levels as a function of normal operation. Operators
must be trained in its use and exercise caution as well as common sense during use to prevent accidental
shock.
This symbol appears adjacent to any external terminals at which hazardous voltage
!
228-1352 SAFETY - (COVER REMOVAL) 112404 C/(D BLANK)
levels as high as 500V d-c may exist in the course of normal or single fault conditions.
This symbol appears adjacent to any external terminals at which hazardous voltage
levels in excess of 500V d-c may exist in the course of normal or single fault conditions.
TABLE OF CONTENTS
SECTION PAGE
SECTION 1 - INTRODUCTION
1.1 Scope Of Manual..................................................................................................................................... 1-1
1.2 General Description................................................................................................................................. 1-1
1.3 Specifications, Electrical.......................................................................................................................... 1-3
1.4 DC Output Ratings For 1/3, 2/3 And Full Rack Modules....................................................................... 1-4
1.5 Miscellaneous Features ......................................................................................................................... 1-7
1.6 Accessories ............................................................................................................................................. 1-7
1.7 Safety ...................................................................................................................................................... 1-8
SECTION 2 - INSTALLATION
2.1 Unpacking And Inspection....................................................................................................................... 2-1
2.2 Transport instructions.............................................................................................................................. 2-1
2.3 Terminations............................................................................................................................................ 2-2
2.4 AC Input Requirement............................................................................................................................. 2-5
2.5 Cooling .................................................................................................................................................... 2-6
2.6 Installation ............................................................................................................................................... 2-6
2.7 Grounding................................................................................................................................................ 2-7
2.7.1 Safety Grounding............................................................................................................................... 2-7
2.7.2 DC (Output) Grounding...................................................................................................................... 2-8
2.7.3 Power Module To Load Interface..................................................................................................... 2-8
2.7.4 Load Connection, Local Error Sensing.............................................................................................. 2-9
2.7.5 Load Connection With Remote Error Sensing................................................................................... 2-10
2.8 Operating Configuration .......................................................................................................................... 2-10
2.9 Preliminary Check-out............................................................................................................................. 2-11
2.9.1 Example 1: Full Scale Voltage Check................................................................................................ 2-12
2.9.2 Example 2: Full Scale Current Check............................................................................................... 2-13
2.9.3 Example 3: To Reset the Power Module ........................................................................................... 2-14
SECTION 3 - OPERATION
3.1 General.................................................................................................................................................... 3-1
3.2 Series Connection Of MAT Power Modules............................................................................................ 3-1
3.3 Power Module Controller/MAT Time Delays (To Obtain A Valid Status):................................................ 3-1
3.4 Power Loss Circuit .................................................................................................................................. 3-2
3.5 Introduction To Controlling The MAT Power Module Output................................................................... 3-2
3.5.1 MAT/Power Module Controller System.............................................................................................. 3-4
3.5.2 MAT/TMA Pc-27 System................................................................................................................... 3-5
3.6 Remote Programming ............................................................................................................................. 3-6
3.6.1 General.............................................................................................................................................. 3-6
3.6.2 SCPI Programming............................................................................................................................ 3-6
3.6.2.1 SCPI Program Example............................................................................................................... 3-7
3.6.3 CIIL Programming.............................................................................................................................. 3-8
3.6.3.1 Examples Using CIIl To Program The MAT Power Module......................................................... 3-8
3.6.3.1.1 Example 1: Program Positive Voltage With Current Limit......................................................3-8
3.6.3.1.2 Example 2 : Program Negative Voltage With Current Limit ...................................................3-10
3.6.3.1.3 Example 3: Program Current And Voltage Limit .....................................................................3-11
APPENDIX A - CIIL COMMAND DEFINITIONS
MAT 25-14 112404
i
LIST OF FIGURES
FIGURE TITLE PAGE
1-1 Remotely Controlled Power Supply Configurations Using Kepco Products............................................... 1-2
1-2 MAT Power Module Mechanical Outline Drawing...................................................................................... 1-6
1-3 The TMA 4882-27 Controller And MAT Power Modules............................................................................ 1-8
2-1 Front View Of The 1/3 Rack MAT Power Supply ...................................................................................... 2-3
2-2 Rear View Of The 1/3 Rack Power Module............................................................................................... 2-4
2-3 MAT Module Barrier Strip With Jumpers For 115 Or 230 Va-c ............................................................... 2-6
2-4 Variation Of Output Impedance With Frequency For A Voltage Source And A Current Source................ 2-8
2-5 Load Connections, Local Sensing.............................................................................................................. 2-9
2-6 Load Connections, Remote Sensing.......................................................................................................... 2-10
3-1 Two MAT 1/3 RACK Power Modules Connected In Series Via Their Output Connector......................... 3-2
3-2 MATPower Module Control Section, Top Cover Removed ........................................................................ 3-3
3-3 Tree Diagram of SCPI Commands Used with MAT Power Supplies ......................................................... 3-6
3-4 Typical Example Of MAT Power Supply Program Using SCPI Commands............................................... 3-7
3-5 Schematic Diagram MAT Front Panel Display Board A8.......................................................................... 3-13
A-1 FNC — Function Command....................................................................................................................... A-1
A-2 INX — Initiate Op Code Command ............................................................................................................ A-2
A-3 FTH — Fetch Command ............................................................................................................................ A-2
A-4 SET Command........................................................................................................................................... A-3
A-5 OPN, CLS — Open, Close Relay Commands ........................................................................................... A-4
A-6 RST — Reset Command............................................................................................................................ A-4
A-7 CNF, IST — Confidence Test, Internal Self Test Commands .................................................................... A-4
A-8 STA — Status Command........................................................................................................................... A-5
ii
MAT 25-14 112404
LIST OF TABLES
TABLE TITLE PAGE
1-1 MAT Power Module Features And Specifications .......................................................................................1-3
1-2 MAT Power Modules Power Output Ratings ...............................................................................................1-4
1-3 Safety Symbols ...........................................................................................................................................1-8
2-1 Hardware Required for Reshipment in Transport Cover .............................................................................2-1
2-2 Internal Controls Accessible Through Top Cover .......................................................................................2-2
2-3 Front Control MAT Power Module ..............................................................................................................2-3
2-4 Rear Terminations MAT Power Module ......................................................................................................2-4
2-5 Ac Input/Control Bus Connector Pin Designations .....................................................................................2-4
2-6 DC Output Connector Pin Designations .....................................................................................................2-5
2-7 Internal Jumper Configuration .....................................................................................................................2-11
3-1 Device Address Selection For The MAT power Module .............................................................................3-4
A-1 CIIL Subsystem Command/query Index .................................................................................................... A-1
A-2 CIIL Error Messages ..................................................................................................................................A-5
MAT 25-14 112404
iii/(vi Blank)
1.1 SCOPE OF MANUAL
This manual contains instructions for the installation, operation, and maintenance of the 1/3
Rack size 360W MAT series of voltage and current stabilized DC Power Modules manufactured
by Kepco, Inc. Flushing, New York, U.S.A.
1.2 GENERAL DESCRIPTION
The Kepco MAT Power Module with overvoltage, overcurrent, overtemperature, polarity reversal, and power loss protection is a digitally controlled precision stabilized Power Module that
delivers either stabilized voltage or current. A single front panel meter with a selector switch
constantly monitors the output voltage or the output current. The prevailing operating mode is
indicated by LED mode indicators on the front panel. Operating mode crossover is dependent on
commands from a Host Computer. The Power Module has a linear and fully dissipative NPN
pass transistor driven by high gain integrated circuit amplifiers. The output of the Power Module
is fully programmable.
The Power Module features full range output control by means of a compatible Kepco Power
Module Controller. Control of the MAT Power Module is via the IEEE 1118 2-wire serial bus
operating at 375KHz; as many as 27 separate modules of either the MAT, MST, MBT or BOP
Series design can be addressed via the bus (see Figure 1-1). Decoders for RS232, IEEE-488
and VXI are available in modular form and stand-alone types. As shown in Figure 1-1, the following controllers are available to control of MAT Power Modules directly from a computer.
SECTION 1 - INTRODUCTION
a. Controller Model TMA PC-27 plugs into a half-card slot of a DOS-based PC and allows key-
board control of the MAT via the IEEE 1118 bus.
b. Controller Model TMA 4882-27 is free-standing and allows host computers designed for
RS232 or IEEE 488 bus communication to control the MAT via the IEEE 1118 bus.
c. Controller Model TMA-VXI-27 plugs into a slot in a VXI chassis and allows VXI-based com-
puters to control the MAT via the IEEE 1118 bus.
d. Controller Model MST 488-27 plugs into a slot in a Model RA 55 Rack Adapter and allows
host computers designed for RS232 or IEEE 488 bus communication to control the MAT via
the IEEE 1118 bus.
e. The MAT Power Module can also be directly controlled via the keypad of the MBT Series
(“G” Option) Power Supply via the IEEE 1118 bus.
An important feature of the MAT Series Power Module is the overvoltage and overcurrent protection circuits. This protection is provided by two autotracking amplifiers that have an overvoltage and overcurrent tracking range of 10% ± 3% above the programmed Power Module output
voltage or current.
The MAT series Power Modules are built in 1/3 Rack, 2/3 Rack and Full Rack mechanical sizes
according to their approximate output power rating (see Mechanical Outline Drawing of the
Power Module Chassis, Figure 1-2).
Power transistors and drivers on all Power Module designs are mounted on highly efficient patented heat sink assemblies that are cooled by fans.
MAT 1/3 and 2/3 Rack size modules are designed to operate in either one of two housings
called RA 50 and RA 51. RA 50 is 5-1/4" x 19" x 25" and accepts up to three 1/3 Rack Power
Modules. RA 51 is similarly sized, but configured for one 1/3 Rack Module and one 2/3 Rack
Module. Full Rack MAT Power Modules mount directly into a standard 19 inch Equipment Rack.
MAT 1/3 RACK/ 112404
1-1
FIGURE 1-1. REMOTELY CONTROLLED POWER SUPPLY CONFIGURATIONS USING KEPCO PRODUCTS
1-2
MAT 1/3 RACK/ 112404
1.3 SPECIFICATIONS, ELECTRICAL
a) MAT Power Module Features And Specification
TABLE 1-1. MAT POWER MODULE FEATURES AND SPECIFICATIONS
PARAMETER CONDITION
Input Voltage Range
Input Current Max
Input Frequency RANGE 47-63 Hz
Voltage/Current Adjust-
ment Range
Programming
Resolution
Programming Accuracy
Data Read Back
Accuracy via Digital Bus
Source Effect
Load Effect
Time 8 Hour Drift
Temperature
Coefficient/°C
Ripple & Noise
Transient Recovery Voltage
Temperature
Cooling Built-in fan, air exhaust to rear
Remote Sensing Range 0.5 volts per lead (Provision for 4-terminal connection to load)
DC Output Isolation Voltage 500 Vdc
Leakage Current Output to chassis 5
Series/Parallel Operation Consult Kepco application engineering
Output Display
IndIcators 4 LEDs
Output Enable/Disable
Polarity Reversal
USER
SELECTABLE
115 VAC 7.0A 14.0A 21.0A
230 VAC 3.5A 7.0A 10.5A
RANGES
Voltage 0.024% Eo max (12 bits)
Current 0.024% Io max (12 bits)
Voltage 0.024% Eo max
Current 0.1% Io max
Volt ag e 0.1% Eo m ax
Current 0.12% Io max
Voltage 0.001% Eo max
Current 0.005% Io max
Voltage 0.002% Eo max
Current 0.024% Io max or 4 mA (whichever is greater)
Voltage 0.01% Eo max
Current 0.02% Io max
Voltage 0.01% Eo max
Current 0.02% Io max
Volt ag e
Current
Operating 0 to 50 °C
Storage -20 to +70 °C
3-1/2 digit LCD
Panel Meter
1/3 RACK 2/3 RACK FULL RACK
0 to 100% of rating, by preprogrammed setting,
rms: 0.001% Eo max or 0.3 mV (whichever is greater)
p-p: 0.01% Eo max or 3 mV (whichever is greater)
150
sec to recover within 0.1% Eo max for 10% to 100%
µ
Voltage and Current Mode,Output Enabled, Polarity
Reversed
Built in power and sensing relays controlled through IEEE
1118 b us
Built in power and sensing relays controlled through IEEE
1118 b us
MAT POWER MODULE
105-125 VAC
210-250 VAC
within inherent resolution limits
rms: 0.03% Io max
p-p: 0.3% Io max
step in rated load current
A rms or 50µA p-p @ 115V a-c
µ
Switch selectable voltage/current
MAT 1/3 RACK/ 112404
1-3
TABLE 1-1. MAT POWER MODULE FEATURES AND SPECIFICATIONS (CONTINUED)
PARAMETER CONDITION
Overvoltage Tracks program voltage, Crowbars output and turns off input
Overcurrent Tracks program current, Crowbars output and turns off input
Protection
Source Connections
Load Connections
Remote Control
Signal Connections
Dimensions See Figure 1-2.
Weight LBS336075
Mounting Front
Filler Panels
Overtemperature
Polarity Reversal Built in diodes protect unipolar supply output
Power Loss Detects loss of ac input power, disables output
For either RA 50
or RA 51
1/3 RACK 2/3 RACK FULL RACK
Monitors heat sink temperature, Crowbars output and turns
off input
3-wire power entry, via user-configurable mating connector
(supplied) and proper gage wires (not supplied)
5-wire connection, via user-configurable mating connector
(supplied) and proper gage wires (not supplied)
DC Power Output: 2 wires
Output Sense Terminals: 2 wires
Ground: 1 wire
Two 2-wire connections via user-configurable mating
connector supplied and 22 AWG wire (not supplied).
Connectors in parallel for daisy chaining multiple power
supplies (full rack only).
Three 1/3 rack
modules plug into
RA 50. One 1/3
and one 2/3 rack
modules plug into
RA 51
MAT POWER MODULE
One 1/3 and one
2/3 rack modules
plug into RA 51
RFP 50-1: 1/3 Panel
RFP 50-2: 2/3 Panel.
Full Rack mounts
directly into 19
inch Rack
1.4 DC OUTPUT RATINGS FOR 1/3, 2/3 AND FULL RACK MODULES
a. MAT Power Module DC Output Ratings 1/3, 2/3, and Full Rack Size - see Table 1-2
b. Output range:
1) Voltage mode: 0-100% of rated voltage
2) Current mode: 0-100% of rated current
TABLE 1-2. MAT POWER MODULES POWER OUTPUT RATINGS
360W MODULES-1/3 RACK SIZE-DC OUTPUT RATINGS
MODEL VOLTS AMPS POWER
MAT 6-32 0-6 0-32 192
MAT 15-20 0-15 0-20 300
MAT25-14 0-25 0-14 350
MAT 36-10 0-36 0-10 360
MAT 55-7 0-55 0-7 385
MAT 75-5 0-75 0-5 375
MAT 100-3.6 0-100 0-3.6 360
MAT 150-2.4 0-150 0-2.4 360
1-4
MAT 1/3 RACK 112404
TABLE 1-2. MAT POWER MODULES POWER OUTPUT RATINGS
360W MODULES-1/3 RACK SIZE-DC OUTPUT RATINGS
720W MODULES-2/3 RACK-DC OUTPUT RATINGS
MODEL VOLTS AMPS POWER
MAT 6-64 0-6 0-64 384
MAT 15-40 0-15 0-40 600
MAT25-28 0-25 0-28 700
MAT 36-20 0-36 0-20 720
MAT 55-14 0-55 0-14 770
MAT 75-10 0-75 0-10 750
MAT 100-7.2 0-100 0-7.2 720
MAT 150-4.8 0-150 0-150 720
1080W MODULES-FULL RACK-DC OUTPUT RATINGS
MODEL VOLTS AMPS POWER
MAT 6-100 0-6 0-100 600
MAT 15-60 0-15 0-60 900
MAT 25-42 0-25 0-42 1050
MAT 36-30 0-36 0-30 1080
MAT 55-20 0-55 0-20 1100
MAT 75-15 0-75 0-15 1125
MAT 100-10 0-100 0-10 1000
MAT 150-7 0-150 0-7 1050
MAT 1/3 RACK/ 112404
1-5
FIGURE 1-2. MAT POWER MODULE MECHANICAL OUTLINE DRAWING
1-6
MAT 1/3 RACK 112404
1.5 MISCELLANEOUS FEATURES
a. Mode flag: A pair of panel LED indicators indicate whether the Power Module is in voltage
mode or in current mode.
b. Remote error sensing: Separate voltage-sensing terminals permit 4-wire connections to a
load to compensate for static load effects (up to 0.5V per lead). An additional 1 volt output
voltage, beyond the nominal voltage rating of each MAT Power Module, is provided for this
purpose.
c. Storage temperature range: -20 to +85° C.
d. Cooling: The fans are high efficiency, single bearing fans with special low-noise non-metallic
blades
1.6 ACCESSORIES
NOTE: All Kepco rack adapters fit standard EIA rack dimensions. They are drilled for chassis
slides (see the RA 50 or RA 51 manual).
a. Kepco Rack Adapter Model RA-50 is for three 1/3 Rack Size Power Modules. Filler panels
are available to cover empty slots, if the adapter is not used to its full capacity.
b. Kepco Rack Adapter Model RA-51 is for one 1/3 Rack Size, and one 2/3 Rack Size Power
Modules. Filler panels to cover empty slots are available if the adapter is not used to its full
capacity. The Full Rack MAT Power Modules fit directly into a standard 19 inch Rack.
c. One 2 meter long shielded twisted pair cable with two mating connectors, one at each end
(Kepco P/N 118-0699) is supplied with each Rack Adapter (RA 50 or RA 51) and with each
Full Rack MAT Power Module. The Power Module Controller (see PAR. 1.2) and up to 27
MAT Power Modules can be connected in a daisy chain configuration as shown in FIG. 1-3.
The last (in the daisy chain) Power Module Control Bus Outlet must be terminated with a Terminating Connector Assembly (Kepco P/N 195-0075) that is supplied with the Power Module Controller.
MAT 1/3 RACK/ 112404
1-7
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