
Programmable DC Power Supplies
405 Essex Road, Neptune, NJ 07753

GENESYS™ Manual Supplement
ITS EQUIPPED WITH “IEMD” OPTION,
FOR UNITS EQUIPPED WITH “LAN” OPTION,

WARRANTY………………………………………………………………………
SAFETY INSTRUCTIONS……………………………………………………………………………..
GERMAN SAFETY INSTRUCTIONS…………………………………………………………………
CHAPTER 1 GENERAL INFORMATION
…………………………………………………………...
1.1 USER MANUAL CONTENT……………………………………………………………………….
Pg.61.2 INTRODUCTION……………………………………………………………………………………
tion…………………………………………………………………………..
1.2.2 Models covered ……………………………………………………………………………...
1.2.3 Features and options ……………………………………………………………………….
1.2.4 Multiple output power system ………………………………………………………………
1.2.5 Control via the serial communication port…………………………………………………
1.2.6 Analog voltage programming and monitoring…………………………………………….
tion…………………………………………………………………………….
1.2.8 Output connections………………………………………………………………………….
1.2.9 Cooling and mechanical construction……………………………………………………..
1.3 ACCESSORIES…………………………………………………………………………………….
1.3.1 Included Accessories………………………………………………………………………..
1.3.2 Optional Communication Cables……………………………………………………………
1.3.3 AC cables …………………………………………………………………………………….
……………………………………………………………………
2.1 OUTPUT RATING………………………………………………………………………………….
2.2 INPUT CHARACTERISTICS……………………………………………………………………...
2.3 CONSTANT VOLTAGE MODE…………………………………………………………………...
2.4 CONSTANT CURRENT MODE…………………………………………………………………..
NALOG PROGRMAMING AND MONITORING……………………………………………….
2.6 PROGRAMMING AND READBACK……………………………………………………………..
2.7 PROTECTIVE FUNCTIONS………………………………………………………………………
2.8 FRONT PANEL…………………………………………………………………………………….
CONDITIONS……………………………………………………………….
2.10 MECHANICAL…………………………………………………………………………………….
2.11 SAFETY/EMS……………………………………………………………………………………..
2.12 SUPPLEMENTAL CHARACTERISTICS……………………………………………………….
2.13 OUTLINE DRAWINGS………………………………
CHAPTER 3 INSTALLATION………………………………………………………………………..
3.1 GENERAL…………………………………………………………………………………………...
3.2 PREPARATION FOR USE………………………………………………………………………...
3.3 INITIAL INSPECTION…………………………………………………………
3.4 RACK MOUNTING…………………………………………………………………………………
3.4.1 To install the power supply in a rack……………………………………………………..
3.4.2 Rack mount slides………………………………………………………………………….
3.5 LOCATION MOUNTING AND COOL
ING……………………………………………………….
3.6 AC SOURCE REQUIREMENTS………………………………………………………………….
3.7 AC INPUT POWER CONNECTION……………………………………………………………...
3.7.1 AC input connector, 1500W mo
els………………………………………………………..
3.7.3 AC input cord………………………………………………………………………………..
3.7.4 AC input wire connection, 1500W mo
ON CHECKOUT PROCEDURE………………………………………………………….
eral……………………………………………………………………………………….
tion…………………………………………………………………………….
3.8.3 Constant voltage check……………………………………………………………………..
3.8.4 Constant current check………………………
3.8.5 OVP check…………………………………………………………………………………...
3.8.6 UVL check……………………………………………………………………………………
3.8.7 Foldback check……………………………………………………………………………...

ting……………….……………………………………………………………..
ting…………………………………………………………………………….
3.9 CONNECTING THE LOAD………………………………………………………………………..
ing…………………………………………………………………………………..
3.9.2 Current Carrying Capa
ity………………………………………………………………….
3.9.3 Wire termination…………………………………………………………………………….
3.9.4 Noise and Impedance E
fects……………………………………………………………...
3.9.5 Inductive loads……………………………………
3.9.6 Making the load conne
tions……………………………………………………………….
3.9.7 Connecting single loads, local sensing (d
3.9.8 Connecting single loads, remote sen
3.9.9 Connecting multiple loads, radial distribution method…………...……………………...
3.9.10 Multiple loads connection with distribution term
puts…………………………………………………………………………
3.10 LOCAL AND REMOTE SENSING………………………………………………………………
ing……………………………………………………………………………...
ing……………………………………………………………………………….
ing…………………………………………………………
3.10.4 J2 sense connector technical inform
3.11 REPACKAGING FOR SHIPMENT………………………………………………………………
CHAPTER 4 FRONT AND REAR PANEL CONTROLS AND CONNECTORS
………………………………………………………………………
4.2 FRONT PANELCONTROLS AND INDICATORS……………………………………………….
4.3 REAR PANELCONNECTIONS AND CONTROLS……………………………………………..
4.4 REAR PANEL SW1 SETUP SWITCH……………………………………………………………
tions……………………………………………………………………
4.4.2 Resetting the SW1 switch………………………………………………………………
4.5 REAR PANEL J1 PROGRAMMING AND MONITORING CONNECTOR……………………
tions……………………………………………………………………..
CHAPTER 5 LOCAL OPERATION
………………………………………………………………….
5.1 INTRODUCTION…………………………………………………………………………………..
5.2 STANDARD OPERATION…………………………………………………………………………
5.2.1 Constant Voltage Mode…………………………………………………………………….
5.2.2 Constant Current Oper
tion………………………………………………………………..
over………………………………………………………………………..
5.3 OVER VOLTAGE PROTECTION (OVP)………………………………………………………...
5.3.1 Setting the OVP level………………………………………
5.3.2 Activated OVP protection indic
tions……………………………………………………..
5.3.3 Resetting the OVP ci
cuit…………………………………………………………………..
5.4 UNDER VOLTAGE LIMIT……………………………………………………………………….. .
ing the UVL level………………………………………………………………………..
5.5 FOLDBACK PROTECTION……………………………………………………………………….
5.5.1 Setting the Foldback prote
tion…………………………………………………………….
5.5.2 Resetting activated Foldback prote
5.6 OUTPUT ON/OFF CONTROL…………………………………………………………………….
OFF (SO) CONTROL VIA REAR PANEL J1 CONNECTOR………………
5.8 ENABLE/DISABLE CONTROL VIA………………………………………………………………
5.9 CV/CC SIGNAL…………………………………………………………………
5.10 PS OK SIGNAL……………………………………………………………………………………
RESTART MODES………………………………………………..
5.11.1 Automatic start mode………………………………………………………………………
5.11.2 Safe start mode…………………………………………
5.12 OVER TEMPERATURE PROTECTION (OTP)………………………………………………..
5.13 LAST SETTING MEMORY………………………………………………………………………
5.14 SERIES OPERATION…………………………………………………………………………….
5.14.1 Series connection for increased
5.14.2 Series connection for positive and negative output vol
5.15 PARALLEL OPERATION……………………………………………………………………….

5.15.1 Basic parallel operation……………………………
5.15.2 Advanced parallel operation………………………………………………………………
OFF CONNECTION…………………………………………………….
5.17 FRONT PANEL LOCKING……………………………………………………………………….
5.17.1 Unlocked front pan
el………………………………………………………………………
5.17.2 Locked front panel…………………………………………………………………………
CHAPTER 6 REMOTE ANALOG PROGRAMMING………………………………………………
6.1 INTRODUCTION……………………………………………………………………………………
6.2 LOCAL/REMOTE ANALOG CO
NTROL…………………………………………………………
6.3 LOCAL/REMOTE ANALOG INDICATION……………………………………………………….
6.4 REMOTE VOLTAGE PROGRAMMING OF OUTPUT VOLTAGE AND CURRENT………..
6.5 RESISTIVE PROGRAMMING OF OUTPUT VOLTAGE AND CURRENT…………………..
TE MONITORING OF OUTPUT VOLTAGE AND CURRENT………………………...
CHAPTER 7 RS232 & RS485 REMOTE CONTROL
7.1 INTRODUCTION……………………………………………………………………………………
7.2 CONFIGURATION………………………………………………………………………………….
ting………………………………………………………………………………...
ting……………………………………………………………………………….
7.2.3 RS232 or RS485 sele
tion………………………………………………………………….
ting……………………………………………………………………
7.2.5 Setting the unit into Remote or Local mode……………………………………………….
7.2.6 RS232/458 port at Local mode……………………………………………………………..
7.2.7 Front panel in Remote mode……………………………………………………………….
RS232/485 CONNECTOR……………………………………………………….
7.4 MD MODE OPTION (Factory I
stalled)………………………………………………………….
7.4.1 MD Mode Description……………………………………………………………………….
Serial communication mode…………………………………
7.4.3 MD Mode SRQ……………………………………………………………………………….
sions…………………………………………………………………..
7.4.5 MD Mode SRQ Retransmi
sion……………………………………………………………
7.5 CONNECTING POWER SUPPLIES TO RS232
ply………………………………………………………………………….
7.5.2 Multi power supply connection to RS232 or RS485 BUS………………………………..
7.6 COMMUNICATION INTERFACE PROTOCOL…………………………………………………
mat…………………………………………………………………………………...
ing……………………………………………………………………………………
7.6.3 End of message……………………………………………………………………………..
peat…………………………………………………………………………….
sum…………………………………………………………………………………….
edge………………………………………………………………………………….
sage………………………………………………………………………………..
space…………………………………………………………………………………….
7.7 ERROR MESSAGES………………………………………………………………………………
7.8 COMMAND SET DESCRIPTION…………………………………………………………………
7.8.1 General guides……………………………………………………………………………….
ries……………………………………………………………………
7.8.3 Initialization control co
mands……………………………………………………………..
mands………………………………………………………………………..
mands…………………………………………………………………..
7.9 GLOBAL OUTPUT COMMANDS………………………………………
eral………………………………………………………………………………………..
7.10 SINGLE BYTE COMMANDS……………………………………………………………………
eral………………………………………………………………………………………
7.10.2 Global commands without r
7.10.3 Global commands with r
sponse…………………………………………………………
7.10.4 Addressed commands with response……………………………………………………
7.10.5 Addressed commands without response………………………………………………..

7.10.6 Status Control Commands………………………………………………………………..
7.11 STATUS, ERROR AND SRQ REGISTERS…………………………………………………..
7.11.1 General Description………………………………………………………………………..
gisters………………………………………………………………………
7.11.3 Service Request: Enable and Event Regi
7.12 SERIAL COMMUNICATION TEST SET
CHAPTER 8 ISOLATED ANALOG PROGRAMMING OPTION
8.1 INTRODUCTION……………………………………………………………………………………
8.2 SPECIFICATIONS………………………………………………………………………………….
tion……………………………………………………………………………
tion………………………………………………………………………………..
.3 ISOLATED PROGRAMMING & MONITORING CONNECTOR………………………………
8.4 SETUP AND OPERATING INSTRUCTIONS……………………………………………………
8.4.1 Setting up the power supply for 0
10V Isolated Programming and Monito
20mA Isolated Programming and Monito
………………………………………………………………………...
9.1 INTRODUCTION……………………………………………………………………………………
9.2 UNITS UNDER WARRANTY…………………………………………………………
9.3 PERIODIC MAINTENANCE……………………………………………………………………….
9.4 ADJUSTMENT AND CALIBRATION……………………………………………………………..
9.5 PARTS REPLACEMENT AND REPAIRS………………………………………………………..
9.6 TROUBLESHOOTING……………………………………………………………………………..
9.7 FUSE RATING……………………………………………………………………………………...

product is warranted against defects in materials and workmanship for
a period of five years from date of shipment. During the warranty period,
will, at it’s option, either repair or replace
products which prove to be defective.
The warranty shall not apply to defects resulting from improper or inadequate usage or maintenance by
the buyer, buyer supplied products or
interfacing. The warranty shall not apply to defects resulting from
unauthorized modifications, or from operation exceeding the environmental specifications of the
product, or if the QA seal has been removed or altered by anyone other than
does not warrant the buyer’s circuitry or
products resulting from the buyer’s circuitry. Furthermore,
does not warrant any damage occu
rring as a result of the buyer’s circuitry
supplied products. THIS LIMITED WARRANTY IS IN LIEU OF, AND
DISCLAIMS AND EXCLUDES, ALL OTHER WARRANTIES, STATUTORY, EXPRESS
OR IMPLIED, INCLUDING, WITHOUT LIMITATION, ANY
WARRANTY OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE, OR OF CONFORMITY TO MODELS OR SAMPLES.
This product must be returned to an authorized
service facility for repairs or
other warranty service. For p
for warranty service, the
buyer shall prepay shipping charges to
. If the unit is covered under the
shall pay the shipping charges to retu
product to the buyer. Refer to Section 3.11 for repackaging for shipment.
The information contained in this document is subject to change without notice.
shall not be liable for errors contained in this document
or for incidental or consequential damages
in connection with the furnishing, performance or use of this material. No part of this document may be
photocopied, reproduced or translated into another language without the prior written consent of
power supply is a trademark of
are trademarks of Microsoft Corporation.
THE FCC WANTS YOU TO KNOW
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 instructions, may cause harmful interference to radio communications.
Operation of this equipment i
n 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.
Modifications not expressly approved by manufacturer could void the user authority to ope
equipment under FCC Rules.

The following safety precautions must be observed during all phases of operation, service and r
ilure to comply with the safety precautions or warnings in this document violates
safety standards of design, manufacture and intended use of this equipment and may i
Lambda Americas Inc. Inc. shall not be liable f
or user’s failure to comply with these requirements.
power supply series has been evaluated to INSTALLATION CATEGORY II. Install
category (over voltage category) II: local level, appliances, portable equipment etc.
sient over voltage than Installation Category (over voltage category) III.
This product is a Safety Class 1 instrument. To minimize shock hazard, the instrument chassis must be
connected to an electrical ground. The instrument mu
st be connected to the AC power supply mains
through a three conductor power cable, with the ground wire firmly connected to an electrical ground
(safety ground) at the power outlet.
For instruments designed to be hard
wired to the supply mains, the protec
tive earth terminal must be
connected to the safety electrical ground before another connection is made. Any interruption of the
protective ground conductor or disconnection of the protective earth terminal will cause a potential
shock hazard that might ca
Fuses must be changed by authorized TDK
Lambda Americas Inc. Inc. service personnel only. For
tion against risk of fire, replace only with the same type and rating of fuse. Refer to
Do not use AC supply, which exceeds the input voltage and frequency rating of this instrument. The
input voltage and frequency rating of the Genesys
power supply series is: 100
safety reasons, the mains supply voltage
fluctuations should not exceed +/
Operating personnel must not remove the instrument cover. No internal adjustment or component r
placement is allowed by non
Lambda Americas Inc. Inc. qualified personnel. Never re
ponents with power cable connected. To avoid injuries, always disconnect power, discharge circuits
ternal voltage source before touching components.
PARTS SUBSTITUTIONS & MODIFICATIONS
Parts substitutions and modifications are allowed
Lambda Americas Inc. Inc. se
vice personnel only. For repairs or modifications, the instrument must be returned to an authorized
Lambda Americas Inc. Inc. service f
OUTPUT TERMINALS GROUNDING
There is a potential shock hazard at the RS232/RS485 and the IEEE ports when using power su
ted or combined voltage greater than 400V and the Positive Output of the Power Supply is
grounded. Do Not connect the Positive Output to ground when using the RS232/RS485 or IEEE.

ower supply series safety approval applies to the following operating cond
*Ambient temperature: 0°C to 50°C
*Maximum relative humidity: 90% (no condensation)
Instruction manual symbol. The instrument will be marked with this symbol when it is
necessary for the user to refer to the instruction manual.
Indicates hazardous voltage.
Indicates ground terminal.
Protective Ground Conductor Termin
The WARNING sign denotes a hazard. An attention to a procedure is called. Not fo
ing procedure correctly could result in personal injury.
A WARNING sign should not be skipped and al
l indicated conditions must be
fully understood and met.
The CAUTION sign denotes a hazard. An attention to a procedure is called. Not follo
ing procedure correctly could result in damage to the equipment. Do not procee
yond a CAUTION sign until all indicated conditions are fully understood and met.
Note: 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 pr
vide reasonable protection against harmful interference when the equipment is operated
in a commercial environment. This equipment generates electro
radiate radio frequency energy and, if not installed and
used in accordance with the i
struction 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 interf
erence at his own expense.

INSTALLATIONS ANWEISUNGEN
Vor Anschluss an das Netz ist die Aufstellanleitung wie nachstehend beschrieben zu beachten. Die
nachstehenden Sicherheitsanweisugen mussen während aller Phasen des Betriebes, des
und der Reparatur dieser Ausrustung beachtet werden. Alle notwendigen Bedingungen die
sicherstellen, dass die Einrichtung zu keiner Gefahr im Sinne dieser Norm führen kann, sind in diesem
Lambda Americas Inc. ist nich ve
rantwortlich fur Fehler, die bei der Inbetriebnahme des Gerates
auf Grundlage dieser Sicherheitsanweisungen durch den Betreiber entstehen können.
Reihe ist zur installation gemass Uberspannungs
Installatios Kategorie (Uberspannungs
Kategories) 2 bedeutet: Kleinindustrie, Geräte, bewegliche
Ausrustung etc.. mit Uberspannungen kleiner als Installation Kategorie 3.
Dieses Produkt ist ein Gerat mit Schutzklasse1. D
amit gefahrliche Energieinhalte und Spannungen
vermieden werden, ist das Geratechassis an eine Schutzerde anzuschliessen. Das Gerat muss an die
AC-Wechselspannungsversorgung mit 3 Leitern (L, N, PE) angeschlossen werden. Der PE
en festen Erder anzuschliessen. Bei Festverdrahtung des Gerates ist
sicherzustellen, dass der PE Anschluss als erstes durchgefuhrt wird.
Jede mogliche Unterbrechung des PE
Leiters oder Trennung der PE Masses kann einen moglichen
elektrischen Schlag hervorr
ufen, der Personenschaden zur Folge hatte.
Es besteht Energiegefahr am RS232/RS485 und IEEE Anschluss, falls die Ausgangsspannung des
Gerates grosser ist als 400V und der positive Ausgangsanschluss des Netzteil
es geerdet wird. Dies gilt
insbesondere auch bei Reihenschaltungen von unterschiedlichen Netzteilen. Wird die RS232/485 oder
IEEE Schnittstelle verwendet, ist darauf zu achten, dass der Plus
Ausgangsanschluss nicht geerdet
fen nur durch autorisierte TDK
Lambda Americas Inc. Service Personen ausgetauscht
werden. Um Brandgefahr vorzubeugen, sind nur Sicherungen zu verwenden mit gleicher Bauart und
Auslosecharakteristik. Siehe hierzu Wartungsanweisungen in Kapitel 6 bezuglich S
Anschluss an Versorgungsstromkreis
Der Betrieb des Gerates ist nur fur den dafur spezifizierten Wechselspannungsbereich und der
angegebenen Frequenz erlaubt.
Der Nominaleingangsspannungsbereich der Genesys
einen sicheren Betrieb des Gerates ist eine Abweichung von max. +/
Die Gerateabdeckung darf nur im stromlosen Zustand geoffnet werden. Interne Modifikationen, sowie
Bauteileaustausch ist nur
Lambda Americas Inc. qualifiziertes Personal erlaubt. Vor
Austausch von Bauteilen ist das Netzkabel bzw. Die Versorgungsspannung zu trennen.
Energieversorgungsanschlusse sind immer zu trennen um Personenverletzungen durch gefahrliche
te und Spannungen auszuschliessen. Die Stromkreise sind zu entladen, extreme
Spannunsquellen sind zu entfernen bevor Bauteile bzw. Komponenten getauscht werden.

Anderungen and Bauteileersatz
durfen nur von autorisiertem TDK
PERSONEN durchgefuhrt werden. Fur Reparaturen oder Anderungen ist das
Lambda Americas Inc. Service
Niederlassung zu retournieren.
Serie ist gemassden Sicherheitsabnahmen fur folgende
Betriebsbedingungen zugelassen.
*Stationare Einrichtungen in Gebauden.
*Umgebungstemperaturebereich: 0
-50°C.*Maximale Relative Luftfeuchtigkeit: 90% (nicht kondensierend).
VORSICHT Spannungsfuhrende Teile
Gefahr durch elektrischen Schlag bzw.
Symbol. Das Gerat bzw. Gerateteile werden mit diesem Symbol
fur den Benutzer notwendig ist, sich auf die Anweisungen im
Zeigt „spannungsfuhrende Teile“ mit gefahrlicher Spannung an.
Anschluss an, keine Schutzerde. (z.B. Masseanschlussan einenVerbraucher).
Symbol fur Schalter oder Drucknopfe
Symbol fur Schalter oder Drucknopfe
Dieses Warnaufschrift weist auf eine Gefahr hin, die eine Uberprufunganweisung nach
sich ziecht. Nichteinhaltung kann zu Personenscha
den fuhren. Dieser Warnhinweis darf
nicht ubersprungen werden und die beschriebene Vorgehensweise musstrikt verstanden
werden und dementsprechend umgesetzt werden.
Diese „Vorsichtswarnung“ weist auf eine Gefahr hin, die ei
Nichteinhaltung kann zur Zerstorung der Anlage oder des Gerates fuhren. Bitte
berucksichtigen Sie alle Anweisungen, die dort beschreiben sind, bevor Sie mit Benutzung
der Anlage bzw. des Gerates fortfahren.

This User’s Manual contains the operating instructions, installation instructions and specifications of
1500W and 750W power supply series. The instructions refer to the standard power
in RS232/RS485 serial communication. For information related to oper
tion with the optional IEEE programming, refer to User’s Manual for Power Supply Programming I
Lambda Americas Inc. P/N 83
power supplies are wide output range, high performance switching power supplies. The
series is power factor corrected and operates from worldwide AC voltage range contin
ously. Output Voltage and Current are continuously displayed a
nd LED indicators show the complete
operating status of the power supply. The Front panel controls allow the user to set the output p
rameters, the protections levels (Over
Voltage protection, Under
Voltage limit and Foldback) and pr
rear panel includes the necessary connectors to control and monitor the power
supply operation by remote analog signals or by the built
in serial communication (RS232/RS485).
Analog programming/monitoring are optional.
1: Models covered by the Manual
Constant Voltage / Constant Current with automatic crossover.
Active power factor correction.
Universal Input Voltage (85
265Vac), continuous operation.
Embedded Microprocessor Controller.
Voltage & Current high resolution adjustment by digital encoders.
High accuracy programming/readback.
Software Calibration (no internal trimmers / potentiometers).
Independent Remote ON/OFF (opto
ed) and remote Enable/Disable.
Parallel operation (Master/Slave) with Active current sharing.

Remote sensing to compensate for voltage drop of power leads.
External Analog Programming and Monitoring standard (0
speed control for low noise and extended fan life.
no ventilation holes at the top and bottom surface of the power supply.
Optional GPIB interface (SCPI compatible).
Optional Isolated Analog programming/monitoring (0
Multiple output power system
power supplies series can be configured into a programmable power system of up to
in RS232/RS485 communication port and the RS485 linking cable provided
In a GPIB system, each power supply can be controlled using the optional GPIB controller (factory
Control via the serial communication port
The following parameters can be programmed / monitored via the serial communication port:
Output Voltage measurement.
Output Current measurement.
Foldback protection setting
voltage protection setting and readback.
Voltage limit setting and readback.
Analog voltage programming and monitoring
Analog inputs and outputs are provided at the rear panel for analog control of the power supply. The
Output Voltage and the Current can be programmed by analog voltage or by
monitored by analog voltage. The power supply output can be remotely set to On or Off and analog
signals monitor the proper operation of the power supply and the mode of operation (CV/CC).
f the same Output Voltage and Current rating can be paralleled in a ma
ter-slave configuration with automatic current sharing to i
Output connections are made to rear panel bus
bars for models up to 60V and to a 4
clamp connector for models above 60V rated output voltage. Either the positive or negative terminal
may be grounded or the output may be floated. Models up to 60VDC Rated Output shall not float ou
60VDC above/below chassis
ground. Models >60VDC Rated Output shall not float
600VDC above/below chassis ground. Contact factory for assistance with higher
float voltage applications.
Local or remote sense may be used. In remote sense, the voltage drop on the l
minimized. Refer to the specifications for the maximum vol

Cooling and mechanical construction
series is cooled by internal fans. At the installation, care must be taken to allow free
ower supply via the front panel and out of the power supply via the rear panel. The
power supplies have a compact and lightweight package, which allows easy installation
and space saving in the application equipment.
The following accessories are delivered with the power su
1.3.1.1 Serial Link Cable
Serial link cable for linking power supplies by RS
485 communication.GEN/RJ45.
Cable description: 0.5m Length, shielded, RJ
1.3.1.2 Hardware (delivered with power supply)
Strain Relief for AC Cord
DB25 Programming Plug kit (AMP 749809
No Power Cord is Provided.
1500W Only Input Connector
plug kit (Phoenix Contact, plug: IMC 1,5/7
1.3.2 Optional Communication Cables (See Para. 7.5)
232 Cables to connect GEN to Serial Port on PC
507-204•RS-485 Cable to connect GEN to Serial Port on PC
AC Cables are provided with 750W Model only, according to suffix in Model Number.
13A 125V, unshielded, 2m typical length, with IEC320 connector on one end and NEMA
15P connector on the other end.
10A 250V, unshielded, 2m typical length, with IEC320 connector on one end and INT’L 7
10A 250V, unshielded, 2m typical length, with IEC320 connector on one end and unte
minated stripped wires on the other end. Use the cable only with plug a
national safety standards of the countr
unshielded, 2m typical length, with IEC320 connector on one end and Japan
type plug on the other end.
10A 250V unshielded, 2m typical length, with IEC320 connector on one end and UK type
power supplies the recommended AC cable (customer supplied) is:
25A 250V, 3x12AWG, outer diameter: 9
C min., 3m max. length. Add a
non-locking plug approved by the national safety standards of the coun
Observe all torque guidelines within this manual. Over
Unit or accessories. Such damage is not covered under manufacturers warranty.

1.Ratedoutput voltage(*1)
2.Ratedoutput current 750W (*2)
1.Ratedoutput voltage(*1)
2.RatedOutput Current 1500W(*2)
3.Ratedoutput power 1500W
1. Input voltage/freq. (*3)
2. Input current (at100/200Vac)
4. 750Wmodels Efficiency(*4)
5. 1500W modelsEfficiency (*4)
6. Inrush current at100/200V
1. Max.Line regulation (*5)
2. Max.Loadregulation (*6)
3. Ripple and noise(p-p,20MHz)(*10)
4. Ripple r.m.s.,5Hz~1MHz(*10)
mV88888888881025605. Temperaturecoefficient
100PPM/°Cof ratedoutputvoltage,following30 minuteswarmup
7. Rem. Sense compensation/wire
8. Up-prog. Responsetime0~Vomax (*9)
9. Down-prog. Responsetime:Full load
1. Max.line regulation(*5)
2. Max.load regulation(*7)
3. Ripple r.m.s.5Hz~1MHz.750W (*8)
4. Temperaturecoefficient
2.5ANALOGPROGRAMMINGANDMONITORING
2. Iout voltage programming
3. Vout resistorprogrmming
4. Iout resistor programming
13.Local/Remote analog control
14.Local/remoteanalog indicator
Dry contact.Open: off, Short:on.Max. voltage at Enable/Disable in:6V.
Byelectricalsignal or Open/Short:0~0.6Vor short: Remote,4~5Vor open: Local.
Open collector. Local:Open,Remote:On. Maximum voltage: 30V, maximum sink current:5mA.
4~5V-OK, 0V-Fail, 500ohm series resistance.
Possible,upto 4 units in master/slave mode withsinglewire current balance connection.
Possible(withexternal diodes),upto 2 units.
CV: TTLhigh(4~5V), source current:10mA, CC:TTL low(0-0.6V).Sinkcurrent:10mA .
Time forthe output voltageto recoverwithin0.5%of itsrated outputfora loadchange 10~90%ofrated
ByelectricalVoltage:0~0.6V/2~15Vor drycontact, userselectablelogic.
0~5V or 0~10V, user selectable.Accuracy: 1%
0~5V or 0~10V, user selectable.Accuracy: 1%
100PPM/°Cfromratedoutput current, following 30minuteswarm-up.
0.05%of ratedloutover8hrsinterval following30 minuteswarm-up. Constantline, load & temp.
Outputset-point: 10~100%.
Less than1mSfor modelsup toandincluding100V;2mS formodels above 100V.
85~265Vac continuous,47-63Hz, single phase.
10.5/5for750Wmodel, 21/11 for1500W models.
0.99@100/200Vac,ratedoutput power.
Less than25Afor750W models,50A for1500W models.
0.01%of ratedoutput voltage +2mV
0.01%of ratedoutput voltage +2mV
0.05%of ratedVout over8hrs interval following 30minutes warm-up. Constant line, load& temp.
More than20mS, 100Vac, rated output power.
0.01%of ratedoutput voltage +2mA
0.02%of ratedoutput current +5mA
0~100%,0~5Vor 0~10V,userselect. Accuracyand linearity;+/-0.5%of ratedVout.
0~100%,0~5Vor 0~10V,userselect. Accuracyand linearity;+/-1% of ratedIout.
0~100%,0~5/10Kohm full scale, user select. Accuracyandlinearity:+/-1%of ratedVout.
0~100%,0~5/10Kohm full scale, user select. Accuracyandlinearity:+/-1.5%ofratedIout.

1. Vout programming accuracy
2. Iout programming accuracy (*13)
3. Vout programming resolution.
4. Iout programming resolution
5. Vout readback accuracy
6. Iout readbackaccuracy(*13)
7. Vout readback resolution
8. Iout readbackresolution
2. Over-voltageprotection
4. Output under voltage limit
5. Overtemperature protection
2.9ENVIRONMENTALCONDITIONS
1. Applicablestandards Safety–EMC
More than100Mohmat 25°C,70%RH
EN55022B,FCCpart15-B,VCCI-B
EN55022A,FCCpart15-A,VCCI-A
2.6PROGRAMMING AND READBACK (RS232/485, Optional IEEEInterface)
0.05%+ 0.05% of ratedoutput voltage.
0.1%of actual output current + 0.1%of ratedoutput current (forIout>0.4%of rated Iout to 100% of ratedIout).
0.1%of actual output current +0.4%of rated output current (forIout<0.4%of ratedIoutto 0.4%of ratedIout).
0.1%+ 0.1%of rated output voltage
0.1%+ 0.3%of rated output current
Output shut-downwhenpowersupply changes fromCVto CC. User presetable.
Invertershut-down; manual reset by ACinputrecycle, OUTbutton.
Presetbyfront panelor communicationport.Prevents adjusting Vout belowlimit.Raisesthe PS_OKsignal incase
output voltageisbelowlimit.
Userselectable,latchedor non latched.
Vout/Ioutmanualadjustby separateencoders. (Coarseand fineadjustment)
OVP/UVL manual adjust by Volt. Adjustencoder
Address selectionby Voltage adjustencoder.Noof addresses: 31
Serialor IEEE display at power-up
Baud rateselection:1200,2400, 4800, 9600and 19200
Re-start modes(Auto Restart, SafeStart)
4 digits, accuracy: 0.5%of ratedvoltage + 1 count
30~90%RH (nocondensation).
4 digits, accuracy: 0.5%of ratedcurrent + 1 count
VOLTAGE, CURRENT,ALARM FINE, PREVIEW, FOLDBACK, LOCAL, OUTPUTON.
10~95%RH (nocondensation).
Maximum3000m, Derate output current by2%/100m above 2000m. Alternatively, derate maximumambient
temperature by1 degC/100mabove2000m.
Forced air cooled byinternalfans.
W:214.0H: 43.6 (57.0 Benchtop Version). D:437.5(Refer toOutlinedrawing).
MIL-810E, method514.5testcondition l-3.3
Less than20G,halfsine,11mS.Unitsunpacked
UL 60950-1listed,EN60950-1 Vout <=40V: OutputisSELV, IEEE/Isolated Analog are SELV.
60< Vout< 400V: Outputis hazardous, IEEE/IsolatedanalogareSELV
400< Vout< 600V: Output is hazardous, IEEE/Isolated,AnalogarenotSELV
Vout < 60Vmodels: Input-Outputs (SELV): 3.0KVrms1 min, Input-Ground: 2.0KVrms1 min.
60<=Vout< 600V models: Input-Haz,output: 2.5KVrms1 min,Input-SELV: 3KVrms1 min, 1900VDC1min.
Hazardous Output - SELV: 1.9KVrms 1 min, Hazardous Output-Ground: 1.9KVrms1 min.

*1: Minimum voltage is guaranteed to maximum 0.2% of the rated output voltage.
*2: Minimum current is guaranteed to maximum 0.4% of the rated output current.
*3: For cases where conformance to
various safety standards (UL, IEC etc.) is required, to be d
*4: At 100/200V input voltage and maximum output power.
load, constant input voltage. M
easured at the sensing point in Remote
*7: For load voltage change, equal to the unit voltage rating, constant input voltage.
*8: For 6V models the ripple is measured at 2
6V output voltage and full output current. For other
100% output voltage and full output current.
*9: With rated, resistive load.
300V models: Measured with JEITA RC
For 600V model: Measured with (10:1) probe.
2.12 SUPPLEMENTAL CHARACTERISTICS
characteristics give typical but non
warranted performance characteristics. The
supplemental characteristics are useful in assessing applications for the power supply. Several kinds
of supplemental characteristics are listed below.
l performance of the power supply.
Reliability Data: Reliability Performance of the power supply.
IEC1000 Data: Performance of the power supply under IEC1000 test conditions.
EMI Data: Typical EMI (conducted and radiated) performance of the power supply.
he supplemental characteristics data is held in each TDK
Lambda Americas Inc. sales and service
ther details please contact the TDK
Lambda Americas Inc. office nearest you.

750W & 1500W POWER SUPPLIES OUTLINE DRAWINGS

This Chapter contains instructions for initial inspection, preparation for use and repackaging for shi
ment. Connection to PC, setting the communi
cation port and linking Genesys
In order to be operational, the power supply must be connected to an appropriate AC source. The AC
source voltage should be within the power supply specif
ication. Do not apply power before reading
1 below, describes the basic setup procedure. Follow the instructions in Table 3
quence given to prepare the power supply for use.
Initial physical inspection of the power su
Installing the power supply,
Connecting the power suppl
Wire size selection. Local/Remote sensing.
Single or multiple loads.
The power supply setting at shipment.
Prior to shipment this power supply was inspected and found free of mechanical or electrical defects.
Upon unpacking of the power supply, inspect for any damage, which may have occurred in tr
The inspection should confirm that there is no exterior damage to the power supply such as broken
knobs or connectors and that the front panel and meters face are not scratched or cracked. Keep all
packing material until the inspection has been comp
leted. If damage is detected, file a claim with ca
rier immediately and notify the TDK
Lambda Americas Inc. sales or authorized service facility nearest
The GenesysTM power supply series is designed to fit in a standard 19” equipmen
3.4.1 To install the Power Supply in a rack:
mount brackets to install the power supply in the rack.
Use a support bar to provide adequate support for the rear of the power supply. Do not o
struct the air exhaust at the rea
power supplies generate magnetic fields which
might affect the operation of o
ther instruments. If your
equipment is susceptible to magnetic fields, do not position it
adjacent to the power supply.

3.4.2 Rack Mount Slides (optional):
Use rack mount slides: General Devices P/N: CC3001
S160 or equivalent to install the unit
in a standard 19” equipment rack. Refer to Fig. 3
1 for slides assembly instructions. Use three
x0.38”(max.) screws at each side. To prevent internal damage, use the specified
3.5 LOCATON, MOUNTING AND COOLING
This power supply is fan cooled. The air intake is at the front panel and the exhaus
panel. Upon installation, allow cooling air to reach the front panel ventilation inlets. Allow a minimum
of 10cm (4 Inch) of unrestricted air space at the front and the rear of the unit.
The power supply should be used in an area that the
ambient temperature does not exceed +50
3.6 AC SOURCE REQUIREMENTS
series can be operated from a nominal 100V to 240V, single phase, 47
input voltage range and current required for each model is specified in Chapter 2. Ensure th
heavy load, the AC voltage supplied to the power supply does not fall below the specifications d
3.7 AC INPUT POWER CONNECTION
Ensure that the screws used to attach the slides to the unit do
not penetrate ore than 6mm into the sides of the unit.
is power supply to an AC power source should
be made by an electrician or other qualified perso
There is a potential shock hazard if the power supply chassis
(with cover in place) is not connected to an electrical safety
ground in the AC input connector.

Fig.3-2: Stripped Wires installed in Strain Relief
3.7.1 AC Input Connector, 1500W models
The AC input connector is a 3
ated on the rear panel. Use suitable wires and
tightening torque as follows:
Wire diameter: 12AWG or 10AWG.
3.7.2 AC Input Connector, 750W models
An IEC connector is provided on the rear panel for connecting the unit t
o the AC power source with an
AC cord. The IEC connector also provides the safety ground connection while the AC cord is plugged
into an appropriate AC receptacle.
Refer to Section 1.3.4 for details of the AC input cords recommended fo
AC Input Wire Connection, 1500W models
Strip the outside insulation of the AC cable approx. 10cm (3.94 inches). Trim the wires so that
the ground wire is 10mm (0.4 inches) longer than the other wires. Strip 14mm (0.55 inche
the end of each of the wires.
Unscrew the base of the strain relief from the helix
shaped body. Insert the base through the
outside opening in the AC input cover and screw the locknut securely (11
ix-shaped body onto the AC cable. Insert the stripped wires through the strain r
lief base until the outer cable jacket is flush with the edge of the base. Tighten (16
the body to the base while holding the cable in place. Now the cable is sec
side the strain relief. Refer to Fig. 3
The AC input cord is the disconnect device of the power
supply. The plug must be readily identifiable and accessible
to the user. The AC input cord must be no longer than 3m.
Some components inside the power supply are at AC vol
even when the On/Off switch is in the “Off” position. To avoid
electric shock hazard, disconnect the line cord and load and
wait two minutes before removing cover.

Route the AC wires to the input connector terminals as required. To connect the wires, loosen the
terminal screw, insert the stripped wire into the terminal and tighten the screw securel
Route the wires inside the cover to prevent pinching. Fasten the cover to the unit using the M3x8 Flat
Head screws provided. Refer to Fig.3
The following procedure ensures that t
he power supply is operational and may be used as a basic i
coming inspection check. Refer to Fig. 4
2 for the location of the controls indicated in the
Ensure that the power supply is configured to the default se
On/Off switch at Off position.
Dip switch: All positions at Down (“Off”) position.
J2 Sense connector: Configured to Local Sense as shown in Fig. 3
4:For units equipped with IEEE option, ensure that the IEEE_En switch is in Up (default) p
2, Item 9 for location) if checkout is to be done in IEEE mode.
Fig.3-3: AC input cover and strain relief, 1500W models
Fig.3-4: J2 Sense connector default connection
Plug P/N: MC1,5/5-ST-3,81

Connect the unit to an AC source as described in Section 3.7.
Connect a DVM with appropriate cables for the rated voltage to the output terminals.
Turn on the output by pressing the OUT pushbutton so the OUT LED illuminates.
Observe the power supply VOLT display and rotate the Voltage encoder. Ensure that the Output
Voltage varies while the VOLT encoder is
rotated. The minimum control range is from zero to the
mum rated output for the power supply model.
Compare the DVM reading with the front panel VOLT display to verify the accuracy of the VOLT
display. Ensure that the front panel VOLT LED is On.
ff the front panel AC power switch.
Ensure that the front panel AC power switch is at the Off position and the DVM connected to the
output terminals shows zero voltage.
Connect a DC shunt across the output terminals. Ensure that the
shunt and the wire current ra
ings are higher than the power supply rating. Connect a DVM to the shunt.
Turn the front panel AC power switch to the On position,
Turn On the output by pressing OUT pushbutton so the OUT LED illuminates.
ply CURRENT display and rotate the CURRENT encoder. Ensure that the
Output Current varies while the CURRENT encoder is rotated. The minimum control range is from
zero to the maximum rated output for the power supply model.
Compare the DVM reading with the
front panel CURRENT display to verify the accuracy of the
CURRENT display. Ensure that the front panel CURRENT LED is On.
Turn Off the front panel AC power switch.
Remove the shunt from the power supply output terminals.
explanation of the OVP function prior to performing the procedure below.
Turn the front panel AC power switch to the On position and turn on the output by pressing OUT
Using the VOLT encoder, adjust the Output Voltage to approx. 10% of the unit
ing.3.Momentarily press the OVP/UVL button so that the CURRENT display shows “OUP”. The
VOLTAGE display will show the last setting of the OVP level.
Rotate the VOLT encoder CCW to adjust the OVP setting to 50% of the unit voltage rating.
few seconds until the VOLT display returns to show the Output Voltage.
Adjust the Output Voltage toward its maximum and check that the Output Voltage cannot be i
creased more than the OVP setting.
Adjust OVP limit to the maximum by repeating Step 3 and rot
ating the VOLT encoder C.W.
Refer to Section 5.4 for explanation of the UVL function prior to performing the procedure below.
Press the OVP/UVL button TWICE so that the CURRENT display shows “UUL”. The VOLTAGE
display will show the last setting o
Rotate the VOLT encoder to adjust the UVL level to approx. 10% of the unit voltage rating.
Wait a few seconds until the VOLT display returns to show the output voltage.
Adjust the output voltage toward its minimum and check that the output
creased below the UVL setting.
Adjust the UVL limit to the minimum by repeating Sep 1 and rotating the VOLT encoder CCW.

Refer to Section 5.5 for explanation of the FOLD function prior to performing the procedure bel
ow.1.Ensure that the Output Voltage is set to approx. 10% of the unit rating.
Adjust the CURRENT encoder to set the Output Current setting to approx. 10% of the unit rating.
Momentarily press the FOLD button. Ensure that the FOLD LED illuminates. The Output
Short the output terminals momentarily (approx. 0.5 sec.). Ensure that the Output Voltage falls to
zero, the VOLT display shows “Fb” and the ALARM LED blinks.
Press the FOLD button again to cancel the protection. The Output Volt
Press the OUT button. Ensure that the Output Voltage returns to its last setting.
Turn the output off by pressing the OUT button. Ensure that the VOLT display shows “OFF”.
Press and hold the REM/LOC button for approx. 3 s
ec. The VOLT display will show the commun
Using the VOLT adjust encoder, check that the address can be set within the range of 0 to 30.
Press and hold the REM/LOC button for approx. 3 sec. The
CURRENT display will show the
communication port Baud Rate.
Using The CURRENT adjust encoder, check that the Baud Rate can be set to 1200, 2400, 4800,
The following considerations should be mad
e to select wiring for connecting the load to the power su
ply:Current carrying capacity of the wire (refer to Section 3.9.2)
Insulation rating of the wire should be at least equivalent to the maximum output voltage of the
h and voltage drop (refer to Section 3.9.2)
Noise and impedance effects of the load wiring (refer to Section 3.9.4).
Current Carrying Capacity
Two factors must be considered when selecting the wire size:
Wires should be at least heavy enough not to overhea
t while carrying the power supply load
current at the rated load, or the current that would flow in the event the load wires were
shorted, whichever is greater.
Shorting the output may e
voltages. Observe proper safety procedures.
Turn Off the AC input power bef
ore making or changing any
rear panel connection. Ensure that all connections are s
curely tightened before applying power. There is a potential
shock hazard when using a power supply with a rated ou

will cause damage to the power supply. Reversing the sense
wires might cause damage to the power supply in local and
remote sensing. (Do not connect
Wire size should be selected to enable voltage drop per lead to be less than 1.0V at the rate
current. Although units will compensate for up to 5V in each load wire, it is recommended to
minimize the voltage drop (1V typical maximum) to prevent excessive output power consum
tion from the power supply and poor dynamic response to load changes. Ple
3 for minimum wire length (to limit voltage drop) in American and European d
Maximum length in Feet to limit
voltage drop to 1V or less
2: Maximum wire length for 1V d
Maximum length in meters to limit
voltage drop to 1V or less
3: Maximum wire length for 1 V drop on lead (in meters)
For currents not shown in Table 3
ximum length=1000/(current x resistivity)
Where current is expressed in Amperes and resistivity in ohms/km or ohms/1000ft.
The wires should be properly terminated with terminals securely attached. DO NOT use unterminated
nection at the power supply.

To minimize the noise pickup or radiation, the load wires and remote sense wires should be twisted
pairs to the shortest possible length. Shielding of sense leads may be necessary in high no
ronments. Where shielding is used, connect the shield to the chassis via a rear panel Ground screw.
Even if noise is not a concern, the load and remote sense wires should be twisted
coupling, which might impact the stability of powe
r supply. The sense leads should be separated from
Twisting the load wires reduces the parasitic inductance of the cable, which could produce high fr
quency voltage spikes at the load and the output of the power supply, because of current
The impedance introduced between the power supply output and the load could make the ripple and
noise at the load worse than the noise at the power supply rear panel output. Additional filtering with
load terminals may be required to bypass the high frequency load current.
Inductive loads can produce voltage spikes that may be harmful to the power supply. A diode should
be connected across the output. The diode voltage and current rating should be greater than the
power supply maximum output voltage and current rating. C
onnect the cathode to the positive output
and the anode to the negative output of the power supply.
Where positive load transients such as back EMF from a motor may occur, connect a surge suppre
sor across the output to protect the power supply. The breakd
own voltage rating of the suppressor
must be approximately 10% higher than the maximum output voltage of the power supply.
Making the load connections
5 for connection of the load wires to the power supply bus
bars shield to the chassis.
Hazardous voltages may exist at the outputs and the load conne
when using a power supply with a rated output greater than 40V. T
protect personnel against accidental contact with hazardous vol
ensure that the load and its connections have no accessible live parts.
Ensure that the load wiring insulation rating is greater than or equal to
the maximum output voltage of the powe
Ensure that the load wiring mounting hardware does not short the ou
terminals. Heavy connecting cables must have some form of strain relief
to prevent loosening the connections or bending the bus

5: Load wires connection, 6V to 60V models
Hazardous voltages exist at the outputs and the load connections. To
protect personnel against accidental contact with hazardous voltages,
ensure that the load and its connections have no accessible live parts.
wiring insulation rating is greater than or equal to
the maximum output voltage of the power supply.
Wire terminal lug (2 places)
Screws tightening torque: 104-118 Lb-inch.

Fig.3-7: Load wires connection to the output connector
Fig.3-9: Protective shield and wires assembly
The 80V to 600V models have a four termina
l wire clamp output connector. The two left terminals are
the positive outputs and the two right terminals are the negative outputs. The connector requirements
ns below for connection of the load wires to the power supply:
Strip approx. 10mm (0.39 inches) at the end of each of the wires.
Loosen the connector terminal screws.
Insert the stripped wires into the terminal and tighten the terminal screw securely (see
Loosen the two chassis screws marked “A” halfway as shown in Fig.3
Assemble the protective shield to the chassis and tighten the two screws to fix the shield to the
8). Screws tightening torque: 4.8
Tighten the wires to one of the shield sides using typ
wrap or equivalent. Refer to Fig.3
-9.Ensure that the wire length inside the shield is long enough to provide proper strain relief.

Connecting single loads, local sensing (
10 shows recommended load and sensing connections for a single load. The local sense lines
shown are default connections at the rear panel J2 sense connector. Local sensing is suitable for a
plications where load regulation is less crit
Connecting single loads, remote sensing
11 shows recommended remote sensing connection for single loads. Remote sensing is used
when, in Constant Voltage mode, the load regul
tion is important at the load terminals. Use twisted or
up. If shielded wires are used, the shield should be connected to
the ground at one point, either at the power supply chassis or the load ground. The optimal point for
the shield ground should be determined by e
ecting multiple loads, radial distribution method
12 shows multiple loads connected to one supply. Each load should be connected to the power
supply’s output terminals using separate airs of wires. It is recommended that each pair of wires will
short as possible and twisted or shielded to minimize noise pick
up and radiation. The sense
wires should be connected to the power supply output terminals or to the load with the most critical
load regulation requirement.
Fig.3-10: Single load connection, local sensing
shortest length possible.
Fig.3-11: Remote sensing, single load

shortest length possible.
Fig.3-12: Multiple loads connection, radial distribution, local sense
onnection with distribution terminals
If remotely located output distribution terminals are used, the power supply output terminals should be
connected to the distribution terminals by pair of twisted and/or shielded wires. Each load should be
onnected to the remote distribution te
If remote sensing is required, the sensing wires should be connected to the distribution terminals or at
Either the positive or negative output term
inals can be grounded. To avoid noise probems caused by
mode current flowing from the load to ground, it is recommended to ground the output
terminal as close as possible to the power supply chassis ground.
Always use two wires to connect the load
to the power supply regardless of how the system is
Models up to 60VDC Rated Output shall not float outputs
60VDC above/below chassis ground. Models > 60VDC
Rated Output shall not float outputs more than +/
above/below chassis ground.
Fig.3-13: Multiple loads connection with distribution terminal

OUTPUT TERMINAL GROUNDING
There is a potential shock hazard at the RS232/RS485 and the IEEE ports when
using power supplies with rated or combined voltage greater than 400V
Positive Output of the power supplies grounded. Do not connect the Positive
output to ground when using the RS232/RS485 or IEEE under the above cond
3.10 LOCAL AND REMOTE SENSING
The rear panel J2 sense connector is used to configure the power supply for local or remote sensing
The power supply is shipped with the rear panel J2 sense connector wired for local sensing of the
Output Voltage. See Table 3
4 for J2 terminals assignment. With local sensing, the Output Voltage
n is made at the output terminals. This method does not compensate for voltage drop on the
load wires, therefore it is recommended only for low load current applications or where the load reg
Remote positive sense (+S)
Local positive sense. Connected internally to the positive output terminal (+LS).
Local negative sense. Connected internally to the negative output terminal (
There is a potential shock hazard at the sense connector when using a
supply with a rated Output Voltage greater than 40V. Local sense and remote
sense wires should have a minimum insulation rating equivalent or greater than
the maximum Output Voltage of the power supply. Ensure that the connections at
e shielded to prevent accidental contact with hazardous voltages.
Fig.3-14: J2 Sense connector location

Use remote sense where the load regulation at the load end is critical. In remote sense, the power
supply will compensate for voltage drop on the load wires. Refer to the power supply specific
m voltage drop on load wires. The voltage drop is subtracted from the total voltage avai
able at the output. Follow the instructions below to configure the power supply for remote sensing:
Ensure that the AC On/Off is in the Off position.
Connect the negative sense lead to terminal J2
5 (S) and the positive sense lead to term
1(+S) of the J2 mating connector. Ensure that the J2 mating connector is plugged securely into
the rear panel sense connector, J2.
If the power supply is operating in remote sense and either the positive or negative load wire is not
connected, an internal protection circuit will activate and shut down the power supply. To resume
operation, turn the AC On/Off
to the Off position, connect the open load wire, and turn On the
If the power supply is operated without the remote sense lines or local sense jumpers, it will co
tinue to work, but the output voltage regulation will be degraded. Also, the O
vate and shut down the power supply.
3.10.4 J2 sense connector technical information
J2 connector type: MC 1.5/5
Stripping length: 7mm (0.28 inches).
3.11 REPACKAGING FOR SHIPMENT
To ensure safe transportation of the instrument, contact the TDK
Lambda Americas Inc. sales or se
vice facility near you for Return Authorization and shipping information. Please att
power supply describing the problem and specifying the owner, model number and serial number of
the power supply. Refer to Wa
ranty Information for further instructions.
There is a potential shock hazard at the sense point when using a power supply
ated Output Voltage greater than 40V. Ensure that the connections at the
load end are shielded to prevent accidental contact with hazardous voltages.
n using shielded sense wires, ground the shield
in one place only. The location can be the power
supply chassis or one of the output terminals.

CHAPTER 4 FRONT AND REAR PANEL CONTROLS AND CONNECTORS
Power Supply series has a full set of controls, indicators and connectors that allow the
user to easily setup and operate the unit. Before starting to operate the unit, please read the fo
Sections for explanation of the function
s of the controls and connectors terminals.
Section 4.2: Front Panel Controls and Indicators.
Section 4.3: Rear Panel Connections and Controls.
4.2 FRONT PANEL CONTROLS AND INDICATORS
1 to review the controls, indicators and meters located on
the power supply front panel.
1: Front Panel controls and indicators
High resolution rotary encoder for adjusting the Output
Voltage. Also adjusts the OVP/UVL levels and selects the
Green LED, lights for constant
segment LED display. Normally displays the Ou
put Voltage. When the PREV button is pressed, the display
e programmed setting of the Output Voltage.
When the OVP/UVL button is pressed, the Voltage display
indicates the OVP/UVL setting.
Fig.4-1: Front panel controls and indicators

1: Front Panel Controls and Indicators
it, 7 segment LED display. Normally displays the Ou
put Current. When the PREV button is pressed, the display
indicates the programmed setting of Output Cu
Green LED, lights for Constant
High resolution rotary encoder for adjusting the Output Cu
Rate of communication port.
Set desired mode of the Master Power Supply in A
vanced parallel operation.
Output ON/OFF control. Press OUT to set
the output On or Off. Press to reset and turn On the ou
after OVP or FOLD alarm events have occurred.
modes. Press and hold OUT button to tog
Restart”. The VOLT display will c
between “SAF” and “AUT”. Releasing the OUT button while
played, selects that mode.
Green LED, lights when the DC output is enabled.
: Go to local. Press REM/LOC to put the unit
into Local mode (REM/LOC button is disabled at Local
Address and Baud Rate setting. Press
and hold REM/LOC for 3 sec. to set the Address with the
VOLTAGE encoder and the Baud Rate with the CURRENT
Green LED, lights when the unit is in Remote mode.
Foldback protection control.
Press FOLD to set Foldback protection to On.
oldback alarm even, press OUT to e
Press FOLD again to cancel the Foldback protection.
Green LED, lights when Foldback protection is On.
Over Voltage Protection and Unde
Press once to set OVP using VOLTAGE encoder (the cu
rent display shows “OUP”)
Press again to set the UVL using VOLTAGE encoder (the
current display shows “UUL”).

and Current setting. For 5 sec. the display will show the se
ting and then it will return to show the actual Output Voltage
Front Panel Lock. Press and hold
PREV button to toggle between “Locked front pane
“Unlocked front panel”. The display will cycle b
and “UFP”. Releasing the PREV button while one of the
modes is displayed selects that mode.
Green LED, lights when PREV button is pressed
nd Current Fine/Coarse adjustment control. Ope
ates as a toggle switch. In Fine mode, the VOLTAGE and
CURRENT encoders operate with high resolution and in
Coarse mode with lower resolution (approx. 6 turns).
Green LED, lights when the unit is in Fine mode.
Red LED, blinks in case of fault detection. OVP, OTP Fol
back, Enable and AC fail detection will cause the ALARM
4.3 REAR PANEL CONNECTIONS AND CONTROLS
2 to review the connections and controls located on the power supply rear panel. Refer to
2 for explanations about the rear panel connections and
Fig.4-2: Rear panel connections and controls

2: Rear panel connections and controls
Wire clamp connector for 1500W units.
IEC connector for 750W units.
Bus-bars for 6V to 60V models.
ctor for 80V to 600V models.
RJ-45 type connector, used for connecting power supplies to
RS232 or RS485 port of computer for remote control purposes.
When using several power supplies in a power system, the first
-Inis connected to the computer and the remaining
RJ-45 type connector, used for daisy
chaining power supplies to
form a serial communication bus.
Connector for remote analog interface. Includes Output Voltage
and Current programming and monitoring signals, Shut
(electrical signal), Enable/Disable control (dry
Supply OK (PS_OK) signal and operation mode (CV/CC) s
switch for selecting remote programming and
monitoring modes for Output Voltage, Output Current and other
Connector for making remote sensing connections t
regulation of the load voltage and compensation of load wire drop.
plate for standard units. Isolated Remote Analog pr
gramming connector for units equipped with Isolated Analog co
connector for units equipped with IEEE pr
switch for selecting IEEE mode or RS232/RS485
mode when IEEE option is installed.
4.4 REAR PANEL SW1 SETUP SWITCH
The SW1 Setup switch (see Fig.4
switch that allows the user to choose the
ing:Internal or remote programming for Output Voltage and Output Current.
Remote voltage or resistive programming of Output Voltage and Output Current limit.
Select range of remote voltage and resistive programming.
Select range of output Voltage and Output Current monitoring.
ween RS232 and RS485 communication interface.
Enable or disable the rear panel Enable/Disable control (dry contact).

Fig.4-3: SW1 setup DIP-switch
4.4.1 SW1 position function
3 for description of SW1 position functions. The factory default setting is
3: SW1 Positions Functions
Remote Analog Programming
Output Voltage programmed
External Voltage or External Resi
External Voltage or External
-3Programming Range Select
(Remote voltage/resistive)
Enable/Disable control is
Before making any changes to the SW1 switch setting, disable the power supply output by pres
ing the front panel OUT button. Ensure that the Output Voltage falls to zero and the OUT LED is
Off. Then use any small flat
-bladed screwdriver to change the SW1 switch setting.

4.5 REAR PANEL J1 PROGRAMMING AND MONITORNG CONNECTOR
The J1 Programming and Monitoring connector is a DB25 subminiature connector located on the
power supply rear panel. Refer to Table 4
ion of the connector functions. The power
supply default configuration is Local operation, which does not require connections to J1. For remote
operation using J1 signals, use the plug provided with power supply (or equivalent type). It is essential
plastic body plug to conform to Safety Agency requirements. If a shield is required for the J1 wires,
connect the shield to a power supply chassis ground screw.
4.5.1 Making J1 connections
J1 Connector type: AMP, P/N:747461
Wire dimension range: AWG26
Extraction tool: AMP, 91232
-2Before making any connection, turn the AC on/Off switch to
the Off position and wait until the front
panel display has turned Off.
nals 12, 22 and 23 of J1 are connected internally to
S) potential of the power supply. Do
not attempt to bias any of these terminals relative to the
negative sense. Use the Isolated Programming interface
option to allow control from a
programming source at a di
tive to the power supply negative.
To prevent ground loops and to maintain power supply isol
tion when programming from J1, use an ungrounded pr
There is a potential shock hazard at the output when using a
power supply with rated output greater than 40V. Use wires
tion rating equivalent to the maximum
output voltage of the power supply.

14151617181920212223242512345
4: J1 connector terminals and functions
4: J1 connector terminals and functions
Enable/Disable the power supply output by dry
(short/open) with ENA_OUT.
Isolated Interface Common. Return for the SO control,
PS_OK signal and for the optional IEEE interface.
Input for selecting between Local or Remote analog pr
gramming of Output Voltage and Output Current.
Input for remote analog voltage/resistance progra
Input for remote analog voltage/resistance programming
Output for monitoring the power supply Output Voltage.
Control Common. Return for VMON, IMON, CV/CC,
lly to the negative sense potential (
Enable/Disable the power supply output by dry
(short/open) with ENA_IN.
ut-Off control of the power supply output.
Output for indication of the power supply status.
Output for indicating if the unit is in Local or Remote
Return for VPGM input. Connected internally to the “
Return for IPGM input. Connected internally to the “
Output for monitoring the power supply Output Cur
J1-25POutput for current balance in parallel operation.

CHAPTER 5 LOCAL OPERATION
This Chapter describes the operating modes that are not involved in programming and monitoring the
power supply via its serial
communication port (RS232/RS485) or by remote analog signals. E
that the REM/LOC LED on the front panel is Off, indicating Local mode. If the REM/LOC LED is On,
press the front panel REM/LOC button to change the operating mode to Local.
ion regarding Remote Analog Programming, refer to Chapter 6.
For information regarding usage of the Serial Communication Port, refer to Chapter 7.
The power supply has two basic operating modes: Constant Voltage Mode and Constant C
Mode. The mode in which the power supply operates at any given time depends on the Output Vol
age setting, Output Current setting and the load resistance.
5.2.1 Constant Voltage Mode
In constant voltage mode, the power supply regulates the Output V
oltage at the selected value,
while the load current varies as required by the load.
While the power supply operates in constant voltage mode, the VOLTAGE LED on the front panel
Adjustment of the Output Voltage can be made when the power suppl
y output is enabled (Output
On) or disabled (Output Off). When the output is enabled, simply rotate the VOLTAGE encoder
knob to program the output voltage. When the output is disabled, press the PREV button and
then rotate the VOLTAGE encoder knob. The VO
LTAGE meter will show the programmed Output
Voltage for 5 seconds after the adjustment has been completed. Then the VOLTAGE meter will
Adjustment resolution can be set to coarse or fine resolution. Press FINE button to select b
er and higher resolution. The FINE LED turns On when the resolution is set to FINE.
5.2.2 Constant Current Mode
In constant current mode, the power supply regulates the Output Current at the selected value,
while the voltage varies with the loa
While the power supply is operating in constant current mode, the CURRENT LED on the front
Adjustment of the Output Current setting can be made when the power supply output is enabled
(Output On) or disabled (Output Off).
Disabled output (Off): Press PREV button and then rotate the Current encoder knob. The
CURRENT meter will show the programmed Output Current limit for 5 seconds after the adjus
ment has been completed. Then the VOLTAGE meter will display “OFF”.
If after completing the adjustment, the display shows a different value
than the setting, the power supply may be at current limit. Check the
nd the power supply Output Current setting.
The maximum and minimum setting values of the output voltage are
limited by the Over Voltage
protection and Under Voltage limit se
Refer to Sections 5.3 and 5.4 for more details.

output, power supply in Constant Voltage mode: Press the PREV button and then rotate
the CURRENT encoder knob. The CURRENT meter will show the programmed Output Current
for 5 seconds after the adjustment has been completed, and then will return to show the
Enabled output, power supply in Constant Current mode: Rotate the CURRENT e
adjust the Output Current.
Adjustment resolution can be set to Coarse or Fine adjustment. Press the FINE button to select
d Fine resolution. The FINE LED turns On when the resolution is set to
5.2.3 Automatic Crossover
If the power supply operates in Constant Voltage mode, while the load current is increased to greater
than the current limit setting, the power supply wi
ll automatically switch to Constant Cu
the load is decreased to less than the current limit setting, the power supply will automatically switch
back to Constant Voltage mode.
OVER VOLTAGE PROTECTION (OVP)
The OVP circuit protects the load in
the event of a remote or local programming error or a power su
ply failure. The protection circuit monitors the voltage at the power supply sense points and thus pr
vides the protection level at the load. Upon detection of an Over Voltage condition, the po
The OVP can be set when the power supply output is Enabled (On) or Disabled (Off). To set the OVP
level, press the OVP/UVL button, so that the CURRENT meter shows “OUP”. The VOLTAGE meter
P setting level. Rotate the VOLTAGE encoder knob to adjust the OVP level. The display
will show “OUP” and the setting value for 5 seconds after the adjustment has been co
then will return to its previous state.
The minimum setting level is approximately 105% of the
set Output Voltage, or the value in Table 7
gher. The maximum setting level is shown in Table 5
-1.To preview the OVP setting, press the OVP/UVL pushbu
ton so that the CURRENT display will show “OUP”. At this
time, the VOLTAGE display will show the OVP setting. A
ter 5 seconds, the display will retu
rn to its previous state.
1: Maximum OVP setting le
Activated OVP protection indications
When the OVP is activated the power supply output shuts down. The VOLTAGE display shows “OUP”
and the ALARM LED blinks.
To reset the OVP circuit after it activates:
Reduce the power supply Output Voltage setting below the OVP set level.
Ensure that the load and the sense wiring are connected properly.
There are four methods to reset the OVP circuit.
b) Turn the power supply Off using the AC On/Off switch, wait until the front panel display turns
Off, then turn the power supply On using the AC On/Off switch.
Turn the power supply output Off and then On using the SO control
(refer to Section 5.7). In
this method the power supply should be set to Auto
d) Send an OUT 1command via the RS232/RS485 communication port.

UNDER VOLTAGE LIMIT (UVL)
The UVL prevents adjustment of the Output Vol
it. The combination of UVL
and OVP functions, allow the user to create a protection window for sensitive load circuitry.
Setting the UVL can be made when the power supply output is Enabled (On) or Disabled (Off). To set
press the OVP/UVL button TWICE, so that the CURRENT meter shows “UUL”. The
VOLTAGE meter shows the UVL setting level. Rotate the VOLTAGE encoder knob to adjust the UVL
level. The display will show ‘UUL” and the setting value for 5 seconds after the adjust
completed and then will return to its previous state.
UVL setting values are limited at the maximum level to approximately 95% of the Output Voltage se
ting. Attempting to adjust the UVL above this limit will result in no response to the adju
Foldback protection will shut down the power supply output if the load current exceeds the current
limit setting level. This protection is useful when the load circuitry is sensitive to
Setting the Foldback protection
To arm the Foldback protection, the FOLD button should be pressed so that the FOLD LED illum
nates. In this condition, transition from Constant Voltage to Constant Current mode will activate the
dback protection. Activation of the Foldback protection disables the power supply output, causes
the ALARM LED to blink and displays “Fb” on the VOLTAGE meter.
Resetting activated Foldback protection
There are four methods to reset an activated Foldback pr
Press the OUT button. The power supply output is enabled and the Output Voltage and Cu
will return to their last setting. In this method, the Foldback protection remains armed, therefore if
the load current is higher than the current limit
setting, the Foldback protection will be activated
Press the FOLD button to cancel the Foldback protection. The power supply output will be di
abled and the VOLTAGE display will show “OFF”. Press the OUT button to enable the power su
n the power supply output Off and then On using the SO control (refer to Section 5.7). In this
method the Foldback protection remains armed, therefore if the load current is higher than the
output current setting, the Foldback prote
Turn the power supply Off using the AC On/Off switch, wait until the front panel display turns Off,
then turn the unit back ON again. The power supply output is enabled and the Output Voltage and
Current will return to their last setting. In this method,
the Foldback protection remains armed,
therefore if the load current is higher than the output current setting, the Foldback protection will
The Output On/Off Enables or Disables the power supply output. Use this
ments to either the power supply or the load without shutting off the AC power. The Output On/Off
can be activated from the front panel using the OUT button or from the rear panel J1 connector. The
OUT button can be pressed at any ti
me to Enable or Disable the power supply output. When the ou
put is disabled, the Output Voltage and Current fall to zero and the VOLTAGE display shows “OFF”.
OFF (SO) CONTROL VIA REAR PANEL J1 CONNECTOR
Contacts 2, 3 and 15 of J1 (Fig.4
em 5) serve as Output Shut
Off (SO) terminals. The SO term
nals accept a 2.5V to 15V signal or Open
Short contact to disable or enable the power supply output.
The SO function will be activated only when a transition from On to Off is detected after applyi
power to the unit. (Thus, in Auto
Restart mode, the output will be Enabled after applying

AC power; even if SO is at an Off level). After an On to Off transition it is detected, the SO will Enable
or Disable the power supply output according to the
signal level or the short/open applied to J1. This
function is useful for connecting power supplies in a “Daisy
chain” (refer to Section 5.16). The SO
control can also be used to reset the OVP and Fold Protection (refer to Section 5.3 and 5.5 for d
off by a J1 signal, the VOLTAGE display will show “SO” to indicate the unit
state. J1 contact 15 is the SO signal input and contacts 2 and 3, IF_COM, are the signal return (co
tacts 2, 3 and 15 are optically i
solated from the power supply output.
The SO control logic can be selected by the rear panel SW1 Setup switch. Refer to Table 5
SW1 setting and SO Control Logic.
ENABLE/DISABLE CONTROL VIA REAR PANEL J1 CONNECTOR
Contacts 1 and 14 of J1 (Fig.4
as Output Enable/Disable terminals by switch or relay. This fun
tion is Enabled or Disabled by the SW1 Setup switch position 9. Refer to Table 5
3 for Enable/Disable function
3: Enable/Disable function and SW1 setting
CV/CC signal indicates the operating mode of the power supply
, Constant Voltage or Constant Current
CV/CC signal is an open collector output with a 30V parallel zener, at J1
13, referenced to the COM potential at
J1-12 (connected internally to the negative sense potential). When the power supply operates in Con
age mode, CV/CC output is open. When the power supply operates in Constant Current mode, the CV/CC signal
0.6), with maximum 10mA sink current.
The PS_OK signal indicates the fault condition of the power suppl
y. PS_OK is a TTL signal output at J1
2, 3 (Isolated Interface Common). When a fault condition occurs, the PS_OK level is
nt possible damage to the unit, do not connect any of the
Enable/Disable inputs to the positive or negative output potential.
If the Enable/Disable fault condition clears when units in safe start mode reco
ery is by pressing OUT but
ton or by sending an ‘OUT 1’ serial command.
output will return back ON automatically when the Enable/Disable fault conditions clears.
Do not connect the CV/CC signal to a voltage source higher than 30VDC. Always
connect the CV/CC signal to voltage source with a series resi
current to less than 10mA.

low, with a maximum sink current of 1mA; when no fault condition occurs, the PS_OK level is high with
mum source current of 2mA. The following faults will set the PS_OK to a Fault state:
*Enable/Disable open (Power supply is disabled)
Off, Power Supply is shut off)
*IEEE failure (With optional IEEE interface)
When turning On the power supply AC On/Off, it can start to its last setting of Output Voltage and Current with
restart mode) or start with the output Disabled (Safe
t mode). Press and hold the
OUT button to select between Safe
restart modes. The VOLTAGE display will continuously cycle
between “SAF” and “AU7” (“7” represents “T”) every 3 seconds. Releasing the OUT pushbutton while one of the
played, selects that mode. The default setting at shipment is Safe
In this mode, the power supply restores its last operation setting. Upon start
up, the output is enabled
or disabled according to its last setting.
In this mode, the power supply restores its last operation setting and sets the Output to an Off state.
up, the output is Disabled and the Output Voltage and Current are zero. To Enable the output
and restore the last Output Vol
tage and Current values, momentarily press the OUT button.
5.12 OVER TEMPERATURE PROTECTON (OTP)
The OTP circuit shuts down the power supply before the internal components can exceed their safe
internal operating temperature. When an OTP shutdown occurs, t
he display shows “O7P” (“7” repr
sents “T”) and the ALARM LED blinks.
Resetting the OTP circuit can be automatic (non
latched) or manual (latched) depending on the
start mode, the power supply
stays Off after the over temperature co
dition has been removed. The display continues to show “O7P” and the ALARM LED continues to
blink. To reset the OTP circuit, press the OUT button (or send an OUT ON command via the serial
restart mode, the power supply recovers to its last setting automat
cally when the over temperature condition is removed.
The power supply is equipped with Last Setting Memory, which stores several power supply param
Output Voltage setting (PV setting)
Output Current setting (PC setting)
Remote/Local: If the last setting was Loca
l Lockout, (latched mode), the supply will return to R
Locked/Unlocked Front Panel (LFP/UFP)
(Items 8, 9, 10 are related to Remote Digital Control operation and are explained in Chapter 7)

Fig.5-1: Series connection, local sensing
Fig.5-2: Series connection, remote sensing
Power supplies of the SAME MODEL can be connected in series to obtain increased output voltage.
Split connection of the power supplies gives positive and negative output voltage.
5.14.1 Series connection for increased outp
In this mode, two units are connected so that their outputs are summed. Set the Current of each
power supply to the maximum that the load can handle without damage. It is recommended that d
odes be connected in parallel with each unit output to
prevent reverse voltage during start up s
quence or in case one unit shuts down. Each diode should be rated to at least the power supply rated
Output Voltage and Output Current. Refer to Fig.5
2 for series operation with local and r
Remote programming in series operation for increased output voltage:
1. Programming by external voltage:
The analog programming circuits of this power supply
are referenced to the negative output potential. Ther
fore, the circuits used to contro
unit must be separated and floated from each other.
2. Using the SO function and PS_OK signal: The Shut
Off and PS_OK circuits are referenced to the
isolated interface common, IF_COM (J1
IF_COM terminals of different units
obtain a single control circuit for the power supplies co
Do not connected power supplies from diffe
entmanufacturers in series or in parallel.
When power supplies are connected in series, and the load or one of the output
terminals is grounded, no point may be at a greater potential of +/
els up to 60VDC Rated Output and +/
models >60VDC Rated Output. When u
ing RS232/RS485 or IEEE, refer to the
OUTPUT TERMINALS GROUNDING warning in Section 3.9.11.

Fig.5-3: Series connection for positive/negative output voltages
(*) Diodes are user supplied.
3. Programming by external resistor:
Programming by external resistor is possible. Refer to
4. Programming via the Serial
nication port is referenced to the IF_COM
Communication port (RS232/RS485):
which is isolated from the power supply output potential.
Therefore power supplies connected in series can be
to Chapter 7 for details.
5.14.2 Series connection for positive and negative output voltage
In this mode, two units are confi
ured as a positive and negative output. Set the Output Current limit
of each power supply to the max
mum that the load can handl
e without damage. It is recommended
that diodes be connected in parallel with each unit output to prevent reverse voltage during start
in case one of the units shuts down. Each diode should be rated to at least the power supply rated
nd output current. Refer to Fig.5
3 for this operating mode.
Remote programming in series operation for positive and negative output voltage
1. Programming by external voltage:
The analog programming circuits of this power su
enced to the negative output potential.
Therefore, the circuits used to control each series
connected unit must be separated and floated from
2. Using the SO function and PS_OK signal:
Off and PS_OK circuits are referenced to
ated interface common, IF_COM (J1
The IF_COM terminals of the units can be co
nected to obtain a single control circuit for the power
supplies connected in series.
3. Programming by external resistor:
Programming by external resistor is possible. Re
to section 6.5 for details.
4. Programming via the Serial
Communication port (RS232/RS485):
The communication port is referenced to the
IF_COM which is isolated from the power supply
output potential. Therefore power supplies co
can be chained using the Remote
Out connectors. Refer to chapter 7

Up to four units of the same VOLTAGE and CURRENT rating can be connected in parallel to provide
up to four times the Output Current ca
pability. One of the units operates as a Master and the remai
ing units are Slaves. The Slave units are analog programmed by the Master unit. In remote digital o
eration, only the Master unit can be programmed by the computer, while the Slave units may be
con-nected to the computer for voltage, current and status readback only. Follow the following procedure
to configure multiple supplies for parallel operation. Refer to Sec. 5.15
s method, setting the units as Master and Slaves is made by the rear panel J1 connections and
the setup switch SW1. Each unit displays its own output current and voltage. To program the load cu
rent, the Master unit should be programmed to the total load c
urrent divided by the number of units in
the system. Refer to the following procedure to configure multiple supplies for basic parallel operation.
1. Setting up the Master unit
Set the Master unit Output Voltage to the desired voltage. Program the Output C
load current divided by the number of parallel units. During operation, the Master unit operates in CV
mode, regulating the load voltage at the programmed Output Voltage. Connect the sensing circuit to
local or remote sensing as shown
2. Setting up the Slave units
-1.The Output Voltage of the Slave units should be programmed 2
5% higher than the Output
Voltage of the Master unit to prevent interference with the Master unit’s control. The Output
g of each unit should be programmed to the desired load current divided by the
2. Set the rear panel setup switch SW1 position 2 to the up position.
3. Connect a wire jumper between J1
ct J1 terminal 10(IPGM) of the slave unit to J1 terminal 25(P) of the master unit.
During operation, the Slave units operate as a controlled current source following the Master Ou
put Current. It is recommended that the power system be designed so that eac
to 95% of its current rating because of the imbalance which may be caused by cabling and co
Daisy Chain Connection: (See Fig. 5
are optional but is strongly recomm
fault condition occurs in any one of them.
Switch SW1 position 5 should be in its down position for all power supplies.
16 of the Master Supply to J1
15 of the ‘First’ Slave Supply (If any).
15 of the ‘Second’ Slave Supply (if any).
16 of the ‘Second’ Slave Supply to J1
15 of the ‘Third’ Slave Supply (If any).
16 of the ‘Last’ Slave Supply to J1
15 of the ‘Third’ Slave Supply (If any).
3) common to all supplies (See Fig. 5.6).
Setting Over Voltage protection
The Master unit OVP setting should be programmed to the desired OVP level. The OVP setting of
the slave units should be programmed to a higher value than the Master OVP. Whe
unit shuts down, it programs the Slave unit to zero Output Voltage. If a Slave unit shuts down
(when its OVP is set lower than the Master Output Voltage), only that Slave unit would shut down,
ing Slave units would supply all of
Setting Foldback protection
Foldback protection, is desired, may only be used with the Master unit. When the Master unit
shuts down, it programs the Slave units to zero Output Vol

In parallel operation, power
supplies can be connected in local or remote sensing. Refer to Fig. 5
5 for typical connections of parallel power supplies. The figures show the connection of
two units, however the same connection method applies for up to 4 units.
In this method, multiple supplies can be configured to parallel operation as a single power supply. The
total load current and output voltage are displayed by the Master unit and can be readback from the
Master unit. The Slave units display o
erating status (On, Off or Fault condition).
Refer to the following procedure to configure multiple supplies for advanced parallel operation.
1. Advanced parallel configuration
Down in the Master Supply and up in all Slave Supp
lies.Connect a short between J1
12 in all Slave Supplies.
25 of the Master Supply to J1
10 of all Slave Supplies.
up connections are optional but are strongly recommended. These se
tings and connections will shut down
all the parallel power supplies when a fault condition
occurs in any one of them:
Switch SW1 position 5 should be in its down position for all power supplies (See Se
16 of the Master Supply to J1
15 of the ‘First’ Slave Supply.
t J1-16 of the ‘First’ Slave Supply to J1
15 of the ‘Second’ Slave Supply (if any)
16 of the ‘Second’ Slave Supply to J1
15 of the ‘Third’ Slave Supply (if any)
16 of the ‘Last’ Slave Supply to J1
3) common to all supplies
Select Local or Remote sense
2. Setting the units as Master or Slave
a) Depress and hold the FINE button for 3 seconds. The Master/Slave configuration will be di
on the Current Display. Ro
tate the CURRENT encoder to obtain the desired mode. Refer to Table
5-4 for the CURRENT display and modes of operation.
Master supply with 1 Slave supply
Master supply with 2 Slave supplies
Master supply with 3 Slave supplies
4: Setting mode of operation
b) When the desired configuration is obtained, depress and release the FINE button or wait approx. 5
3. Master and Slave units default operation
a unit is programmed to Slave mode it enters the Remote mode with Local Lockout. In this
mode, the front panel controls are disabled to prevent accidental setting change (refer to Sec.
b) The Slave units parameters will automatically s
*Output voltage to approximate. 102% of rated output voltage.
*Programmed Current to zero.
*OVP to its maximum value

c) The Master and Slave modes a
re stored in the power supply EEPROM when the AC power is turned
off. The system will return to the Ma
4. CURRENT display accuracy
In the advanced parallel mode, the Master unit calculates the total current b
rent by the number of Slave units. In this method, the CURRENT display accuracy is 2% +/
-1count. In cases that higher accuracy is required, it is recommended to use the basic parallel operation
Slave units can be released using the following procedure:
a) Depress FINE button for 3 seconds. The Master/Slave configuration will be displayed on the
b) Select H1 mode using the CURRENT encoder.
c) Depress FINE button aga
d) Turn the AC power Off to store the new setting.
e) After exiting from Slave operation the unit’s parameters will be set to:
*Programmed Voltage to zero
*Programmed Current to zero
Fig.5-4: Parallel connection with local sensing
With local sensing it is important to minimize the wire length and resistance. Also the positive
and negative wire resistance should be close as possible to each other to
Make sure that the connection between
V terminals is reliable to avoid disco
operation. Disconnection may cause damage to the power supply.

It is possible to configure a multiple power supply system to shut down all the units when a fault cond
ne of the units. When the fault is removed, the system recovers according to its setting
Setup switch SW1, position 5 should be set to its DOWN position to enable the Daisy
according to the application requirements.
If a fault occurs in one of the units, its PS_OK signal will be set to a low level and the display will ind
cate the fault. The other units will shut off and their display will indicate “SO”. When the fault condi
is removed, the units will recover to their last setting according to their Safe
6 shows connection of three units, however the same connection method applies to systems
with a larger number of units.
The front panel controls can be locked to protect from accidental power supply parameter change.
Press and hold the PREV button to toggle between “Locked front panel’ and “Unlocked front panel”.
The display will cycle between “LFP” and “UFP”
. Releasing the PREV button while one of the modes
5.17.1 Unlocked front panel
In this mode, the front panel controls are Enabled to program and monitor the power supply param
5.17.2 Locked front panel
e following front panel controls are Disabled:
VOLTAGE and CURRENT encoders.
The power supply will not respond to attempts to use these controls. The VOLT display will show
cate that the front panel is locked.
OVP/ UVL button is active to preview the OVP and UVL setting.
Use the PREV button to preview the Output Vol
age and Current setting or to unlock the front panel.
Fig.5-6: Daisy-chain connection
Fig.5-5: Parallel operation with Remote sensing

connect internally to the
S). Do not connect these term
nals to any potential other than
S), as it may damage the power
CHAPTER 6 REMOTE ANALOG PROGRAMMING
The rear panel connector J1 allows the
user to program the power supply Output Voltage and Current
with an analog device. J1 also provides monitoring signals for Output Voltage and Output Current.
The programming range and monitoring signals range can be selected between 0
the setup switch SW1. When the power supply is in Remote Analog programming mode, the serial
tive and can be used to query the power supply settings.
Short contact (referenced to J1
select between Local or Remote Analog programming of the Output Voltage and Current.
In Local mode, the Output Voltage and Output Current can be programmed via the front panel
T encoders or via the RS232/RS485 port. In Remote Analog mode, the Ou
put Voltage and current can be programmed by analog voltage or by programming resistors via J1
contacts 9 and 10 (refer to Sections 6.4 and 6.5). Refer to Table 6
tion and Setup switch SW1
1: Local/Remote Analog control function
6.3 LOCAL/REMOTE ANALOG INDICATION
2, Item 5) is an open collector output that indicates if the power supply is in
Local mode or in Remote Analog mode. To use this output, connect a pull
up resistor so that the sink current will be less than 5mA
when the output is in a low state. Refer to table 6
2: Local/Remote Analog indication

To maintain the power supply isolation and to prevent ground loops, use an
isolated programming source when operating the power supply via remote
analog programming at the J1 connector.
6.4 REMOTE VOLTAGE PROGRAMMING OF OUTPUT VOLTAGE AND OUTPUT
form the following procedure to set the power supply to Remote Voltage programming:
Turn the power supply AC On/Off switch to Off.
2.Set setup switch SW1, positions 1 and 2 to their UP position.
Set SW1, position 3 to select the programming voltage range acc
Ensure that SW1, positions 7 and 8 are at their DOWN (default) position.
Connect a wire jumper between J1
4).6.Connect the programming source to the mating plug of J1 as shown in Fig.6
larity for the voltage source.
Set the programming sources to the desired levels and turn the power supply ON. Adjust
the programming sources to change the power supply output.
SW1, positions, 4, 5, 6 and 9 are not required for remote programming.
be determined according the application.
The control circuits allow the user to set the Output Voltage and Output Current up to 5%
rated maximum value. The power supply will operate within the extended
not recommended to operate the power supply over its voltage and
ing, and performance is not guaranteed.
3 setting and programming range
J1 connector, rear panel view
Fig.6-1: Remote voltage programming connection

6.5 RESISITIVE PROGRAMMING OF OUTPUT VOLTAGE AND CURRENT LIMIT
For resistive programming, internal current sources, for Output Voltage and/or Output Current control,
supply 1mA current through external programmi
ng resistors connected between J1
-10& 23. The voltage across the programming resistors is used as a programming voltage for the power
10Kohm can be selected to program the Output Voltage and
A variable resistor can control the output over its entire range, or a combination of variable resistor
and series/parallel resistors can control the output over restricted portion of its range.
Perform the following procedure to
set the power supply to Resistive programming:
Turn the AC On/Off switch to Off.
Set setup switch SW1, positions 1 and 2 to their UP position.
Set SW1, position 3 to select the programming resistor range according to Table 6
Set SW1, positions 7 and 8 t
o their UP position, to enable resistive programming mode.
Connect a wire jumper between J1
4).6.Connect the programming resistors to the mating plug of J1 as shown in Fig.6
Set the programming resistors to the desired resis
tance and turn the power supply ON. Adjust the
resistors to change the power supply output.
SW1, positions 4, 5, 6 and 9 are not required for remote programming. Their settings can be d
termined according to the application requirements.
l circuits allow the user to set the Output Voltage and Output Current up to 5% over the
rated maximum value. The power supply will operate within the extended range, however it
is not recommended to operate the power supply over its voltage and curr
To maintain the temperature stability specification of the power supply, the resistors used for pr
gramming should be stable and low noise resistors, with temperature coefficient of less than
ive programming is used, front panel and computer control (via serial communication
port) of Output Voltage and Current are disabled.
3 setting and programming range
J1 connector, rear panel view
Fig.6-2: Remote resistive programming

6.6 REMOTE MONITORING OF OUTPUT VOLTAGE AND CURRENT
The J1 connector, located on the rear panel provides analog signals for monitoring the Output Voltage
and Output Current. Selection o
f the voltage range between 0
10V is made by setup switch
4. The monitoring signals represent 0 to 100% of the power supply Output Voltage and Output
Current. The monitor outputs have 500 ohm series output resistance. Ensure that the sensing ci
sistance of greater than 500 Kohm or accuracy will be reduced.
5 for the required J1 connection, SW1
4 setting and monitoring voltage range.
5 Monitoring signals setting
1. Radiated emissions, RCC requir
iated emissions; use a shielded
cable for the analog control signals. If using unshielded
cable, attach an EMI ferrite suppressor to the cable, as
close as possible to the power supply.
2. Front panel encoders operation:
In Remote analog mode, the output
can’t be set by the VOLTAGE and CURRENT encoders.
3. Front panel PREV button:
Use the PREV button to display the Output Voltage and
Current setting, as defined by the encoders or digital
log mode, all power supply parameters
can be programmed and readback via the communication
port, except the Output Voltage and Current setting.

CHAPTER 7 RS232 & RS485 REMOTE CONTROL
This Chapter describes the operation of the Genesys
3300W power supplies via the serial comm
nication port. Details of the initial set
up, operation via RS232 or RS485, the command set and the
communication protocol are described in this Chapter.
y is shipped with the following settings:
The power supply address can be set to any address between 0 and 30. Follow the instructions d
scribed below to set the unit address.
If the unit is in Remote mode (front panel REM/LOC LED illuminated), press the REM/LOC bu
Press and hold for the REM/LOC button for approximately 3 sec. The VOLTAGE display will ind
Using the VOLTAGE adjust encoder, select the unit address.
To preview the power supply address at any time, press and
hold the REM/LOC button for approx. 3
sec. The VOLTAGE display will indicate the power supply address.
To select between RS232 or RS485 set the rear panel setup switch SW1
Five optional Baud rates are possible: 1200, 2400, 4800, 9600 and 19200. To select the desired rate,
lowing steps should be taken:
If the unit is in Remote mode (front panel REM/LOC LED illuminates), press REM/LOC button to
Press and hold the REM/LOC button for approximately 3 sec. The CURRENT display will show
Using the CURRENT adjust encoder, select the desired Baud Rate.
Setting the unit into Remote or Local mode
to Remote mode only via serial communication command. Commands that
will put the unit into Remote mode are:
(for n values see Tables 7

Tx and Rx are used for RS232 communication. Txd +/
communication. Refer to RS
485 cabling and connection d
There are two Remote modes:
In this mode, return to lo
cal can be made by the front panel REM/LOC or via
serial port command RMT 0. Set the unit into Remote mode via serial port
2. Local Lockout: In this mode the unit can be returned to Remote mode via the ser
command or by turning off the AC power until the display turns off, and then turn
it to on again. In local Lockout mode, the front panel REM/LOC button is not a
tive. Set the unit into Local Lockout mode via serial port RMT 2 co
232/RS485 port in Local mode
When the power supply is in Local mode, it can receive queries or commands. If a query is received,
the power supply will reply and remain in Local mode. If a command that affects the output is r
ceived, the power supply will p
erform the command and change to Remote mode.
Serial commands may be sent to set the status registers and read them while the unit is in Local
mode. If the Enable registers are set (refer to Section 7.11) the power supply will transmit SRQ’s while
Front panel in Remote mode
Front panel control in Remote mode is Disabled except for:
1. PREV: use to preview the Voltage and Current setting.
2. OVP/UVL: use to preview the OVP/UVL setting.
LOC/REM: use to set the unit into Local mode.
out mode, only the PREV and OVP/UVL pushbuttons are active.
7.3 REAR PANEL RS232/RS485 CONNECTOR
The RS232/RS485 interface is accessible through the rear panel RS232/RS485 IN and RS485 OUT
connectors. The connectors are 8 contact RJ
nnectors are used to connect
power supplies in a RS232 or RS485 chain to a controller. Refer to Fig. 7
Fig.7-1: Rear panel J3 IN/OUT connectors pinout

7.4 MD MODE OPTION (Factory Installed)
7.4.1 MD Mode Description
The GEN supply is capable of operating in a multi drop e
serial communications on a single serial bus. A maximum of 31 GEN supplies can operate in this si
gle bus. Upon power up the Gen will enter the point
point mode in which it is a
erate on a serial bus. MD Mode must be enabled
Ref. Section 7.10.2.2. The user must
set all Slave supplies to a unique address. No two supplies may have the same address.
Serial communication mode
Refer to section 7.10.2.2. MD Mode is en
tered into via a Single byte command. In MD Mode the Ma
ter supply shall operate in one of the two serial modes, RS232 or RS485, depending upon the rear
panel DIP switch setting and the Slave supplies shall operate in the RS485 s
MD Mode the SRQ generated by the supply is replaced by a single byte SRQ sent two times in s
quence. The SRQ byte, in binary, will contain the address of the supply in the least significant 5 bits
with bits 5 and 6 set to logic zero and bit 7 set to logic
In MD Mode it is possible to have one supply issue an SRQ while another supply is transmitting
data/response to a command. When this happens, the HOST PC will receive garbled data and a
sume that the data/respons
e was corrupted and thus re
be lost. The method of recovery will be SRQ retransmission, Ref. Section 7.4.5, or pol
supplies to see who issued the SRQ
available by reading the SEVE? Regist
The supply can be commanded to retransmit the SRQ at regular intervals until it is answered to by the
HOST PC (Ref. Section 7.10.2.4). The retransmission interval is 10 ms plus the supply address mult

POWER SUPPLIES TO RS232 OR RS485 BUS
7.5.1 Single power supply
1. Select the desired interface RS232 or RS485 using rear panel setup switch SW1
2. Connect rear panel IN connector to the co
ntroller RS232 or RS485 port using a suitable shielded
cable. Refer to Figures 7
4 for available RS232 and RS485 cables.
Fig.7-2: RS232 cable with DB25 connector (P/N: GEN/232-25)
Fig.7-3: RS232 cable with DB9 connector (P/N: GEN/232-9)
Fig.7-4: RS485 cable with DB9 connector (P/N: GEN/485-9)

The address (ADR n) command must return an “OK” response b
nection to RS232 or RS485 bus
Up to 31 units can be connected (daisy chained) to the RS232 or RS
485 bus. The first unit connects
troller via RS232 or RS485 and the other units are connected via the RS485 bus.
1. First unit connection: Refer to Section 7.5.1 for connecting the first unit to the controller.
2. Other units connection: The o
ther units on the bus are connected via their RS485 interface.
5 for typical connection.
Set rear panel setup switch SW1
Using the Linking cable supplied with each unit (refer to Fig. 7
tor to the next unit IN connector.
7.6 COMMUNICATION INTERFACE PROTOCOL
Serial data format is 8 bit, one start bit and one stop bit. No parity bit.
The Address is sent separately from th
e command. It is recommended to add 100msec delay b
tween query or sent command to next unit addressing. Refer to Section 7.8.3 for d
The end of message is the Carriage Return character (ASCII 13). The power supply ignores the Line
The backslash character “
” will cause the last command to be repeated.
The user may add a checksum (optional) to the end of the command. The checksum is “$” followed
by two hex characters. If a command or a
query has a checksum, the response will also have one.
There is no CR between the command string and the “$” sign.
The power supply acknowledges received commands by returning an “OK” message. If an e
detected the power supply will return an error message. The rules of checksum also apply to the a
Fig7-5: Multiple power supply RS232/485 connection
Serial link cable with RJ-45 shielded connectors (P/N: GEN/RJ-45)

If an error is detected in command or query, the power supply will respond with an error message.
The backspace character (ASCII 8) clears the last character sent to the power supply.
The power supply will return error messages for illegal commands and illegal programming param
ming error messages and Table 7
1: Programming error messages
Returned when program voltage (PV) is programmed above acceptable range.
Example: PV above ‘105% of supply rating’ or PV above 9
Returned when programming output voltage below UVL setting.
Returned when OVP is programmed below acceptable range.
Example: OVP less than “5% of supply voltage rating’ plus ‘voltage setting’.
Returned when UVL is program
med above the programmed output voltage.
Returned when programming the Output to ON during a fault shut down.
2: Commands error messages
7.8 COMMAND SET DESCRIPTION
Any command or argument may be in capital letters or small letters.
In commands with an argument, a space must be between the command and the arg
mand that sets a numeric value, the value may be up to 12 characters long.
Carriage Return: If the CR character (ASCII 13) is received by itself, the power supply will r

Initialization Control Commands
ADR is followed by address, which can be 0 to 30 and is used to access the
Clear status. Sets FEVE and SEVE registers to zero (refer to Sectio
Reset command. Brings the power supply to a safe and known state:
Output voltage: zero, Remote: non
Output current: zero, Auto
Output: Off, OVP: maximum,
The conditional registers (FLT and STAT) are updated, the other registers are
Sets the power supply to local or remote mode:
RMT 0 or RMT LOC, sets the power supply into Local mode.
RMT 1 or RMT REM, sets the unit into remot
RMT 2 or RMT LLO, sets the unit into Local Lockout mode (latched r
Returns to the Remote mode setting:
The unit is in Local mode.
The unit is in Remote mode.
The unit is in Local Lockout (latched remote)
Returns MD MODE OPTION Status. 1 indicates installed and 0 indicates not i
<CR> is received, the power supply will repeat the last
power supply model identification as an ASCII string:
Returns the software version as an ASCII string.
Returns the unit serial number. Up to 12 characters.
Returns date of last test. Date format: yyyy/mm/dd
Sets the output voltage value in Volts. The range of voltage value is described in
5. The maximum number of characters is 12. See the following exa
for PV n format: PV 12, PV 012, PV 12.0, PV 012.00
Reads the output voltage setting. Returns the string “n” where “n” is the exact
string sent in the PV n command. When in Local mode, returns the PREVIEW
(front panel) settings in a 5 digit string.
Reads the actual output voltage. Retur
Example: 60V supply sends 01.150, 15.012, 50.000, etc…
Set the Output Current value in Amperes. The range of current values is d
scribed in Table 7.6. The maximum number of characters is 12. See the following
mples for PC n format: PC n format: PC 10, PC 10.0, PC 010.00, etc…
Reads the Output Current setting. Returns the string “n” where “n” is the exact
string sent in the PC n command. When in Local mode, returns the PREVIEW
Reads the actual Output Current. Returns a 5 digit string.
Example: 200A supply sends 000.50, 110.12, 200.00, etc…

Display Voltage and Current data. Data will be returned as a string of ASC
characters. A comma will separate the different fields. The fields, in order, are:
Measured Voltage, Programmed Voltage, Measured Current, Programmed Cu
rent, Over Voltage Set Point and Under Voltage Set Point.
Example: 5.9999,6.0000,010.02,010.00,7.500
Set the low pass filter frequency of the A to D Converter for Voltage and Current
Measurement where nn = 18, 23 or 46.
Returns the A to D Converter filter frequency: 18,23 or 46 Hz.
Turns the output to ON or OFF. Re
Returns the output On/Off status string.
Sets the Foldback protection to ON or OFF.
Arms the Foldback protection
Cancels the Foldback protection.
When the Foldback protection has been activated, OUT 1 command will release
arm it, while FLD 0 will cancel the protection.
ldback protection status string:
Add (nn x 0.1) seconds to the Fold Back Delay. This delay is in addition to the
standard delay. The range of nn is 0 to 255. The value is stored in epr
power down and recovered at AC power up.
Supply returns the value of the added Fold Back Delay.
Reset the added Fold Back Delay to zero.
Sets the OVP level. The OVP setting range is given in Table 7
characters after OVP is up to 12. The minimum setting level is approximately
105% of the Output Voltage setting, or the value in Table 7
higher. The maximum OVP setting level is shown in Table 5
program the OVP below this l
evel will result in an execution error response
(“E04”). The OVP setting stays u
Returns the setting “n” where “n” is the exact string in the user’s “OVP n”. When
in Local mode, returns the last setting from the front panel in a 4 digit s
Sets OVP level to the maximum level. Refer to Table 7
Sets Under Voltage Limit. Value of “n” may be equal to PV setting, but returns
“E06” if higher. Refer to Table 7
8 for UVL programming range.
where “n” is the exact string in the user’s “UVL n”. When
in Local mode, returns the last setting from the front panel in a 4 digit string.
restart mode to ON or OFF.
AST 1 (or AST ON): Auto restart On.
AST 0 (or AST OFF): Auto res
Saves present settings. The settings are the same as power
tings are erased when the supply power is switched Off and the new
“last settings” are saved.
Recalls last settings. Settings are from the last power

Returns the power supply operation mode. When the power supply is On (OUT
1) it will return “CV” or “CC”. When the power supply is OFF (OUT 0 or
Returns the Master/Slave setting. Master: n= 1, 2, 3, or 4 Slave: n=0
1. In Advanced parallel mode (refer to Sec. 5.15.2), “n” is the total system current.
2. In Advanced parallel mode, “MC?” returns
the Master unit current multiplied by the number of slave
7.9 GLOBAL OUTPUT COMMANDS
All supplies, even if not the currently addressed supply, receiving a global command will execute the
command. No response to the PC issuing the comman
d will be returned to the PC. The PC iss
the command will be responsible to delay and any other communications until the command is ex
cute. 200 Ms minimum is the suggested delay.
If the command contains an error, out of range values for example, no er
ror report will be sent to the
Reset. Brings the power supply to a safe and known state:
Output voltage: 0V, output current: 0A, OUT: Off, Remote: RMT 1,
The conditional register (FLT and STAT) are updated. Other registers are
Latching faults (FB, OVP, SO) are cleared, OUT fault stays
Sets the output voltage value in volts. The range of voltage values is shown in T
ay be up to 12 char plus dec. pt
Program the output current value in amperes. The range of current values is
6. ‘n’ may be up to 12 characters plus decimal pt
Turns the output to ON or OFF:
urnoff, clears CV and CC bits in the Status Condition (STAT).
OUT ON will respond with “E07’ if the output cannot be turned on because of a
latching fault (OTP< AC, ENA, SO) shutdown.
Save present settings. Same settings as power
Reference source not found. Except the address and Baud rate are not saved
Saves to the RAM. These settings are erased when the supply power is switched
off and the new ‘last settings’ are saved.
Recall last settings. Settings are fr
down or from last ‘SAV’ or
‘GSAV’ command. Address and Baud rate are not recalled so communication is

7.10 SINGLE BYTE COMMANDS
Single byte commands are commands in which all the necessary data for the supply to
contained in a single byte. Single byte commands will be executed immediately by the supply. If the
command requires data to be sent to the HOST PC or IEEE Board (see sections 7.10.4 and 7.10.3.1)
that response will be transmitted immediately
with no delay due to any software overhead. With the
tion of the Disconnect from communications command, section 7.10.3.1, commands must be
sent by the HOST PC or IEEE Board 2 times in sequence for verif
cation. All have the most significant
set to a logic 1. A CR, carriage return, character is not included in a single byte command.
The RST command will not change any setting made by a single byte command.
All Single Byte commands will be executed in 1 ms or less. This does not include any res
to the HOST/IEEE Board, which is dependent upon the response length and the serial transmission
Global commands without response
Disable MD Mode (MD MODE OPTION REQUIRED)
Disable is the default condition upon power up. The Hex
value of the command is 0xA0. Send it two
times in sequence. All supplies, both the currently addressed supply and all non
will disable MD Mode as a result of this command.
Enable MD Mode (MD MODE OPTION REQUIRED)
Drop Mode. The Hex value of the command is 0xA1. Sent it two times in s
quence. When this command is sent, the supply will set SRQ retransmission to the disable state; if
you wish it to be enabled you must send the enable command. All supplies, both the cu
dressed supply and all non
addressed supplies, will enable MD Mode as a r
Disable SRQ retransmission (MD MODE OPTION REQUIRED)
Disable is the default condition upon power up. The Hex value of the command is 0xA2. Sent
times in sequence. If the supply sends an SRQ it will only sent it 1 time. All supplies, both the cu
rently addressed supply and all non
addressed supplies, will disable SRQ retransmission as a result
of this command. All status registers will retain thei
r data when this command is sent.
Enable SRQ retransmission (MD MODE OPTION REQUIRED)
Enable retransmission of SRQs. This is only available when the Multi Drop Mode is enabled in the
supply. The Hex value of the command is 0xA3. Send it two times in sequen
ce. If the supply sends an
SRQ it will be repeated on a timely basis, 10 ms plus 20 ms times the supply address, until answered.
All supplies, both the currently addressed supply and all non
addressed supplies, will enable SRQ r
transmission as a result of
Enable FLT Bit in the SENA Register
The Hex value of the command is 0xA4. Send it two times in sequence.
Global commands with response
Disconnect from communications
Command the supply to end all data transmissions to the HOST PC/IEEE Board
the active addressed supply. The HOST PC/IEEE Board will be required to re
mand to reestablish communications with the supply. After receiving the first command the supply will
respond with an OK<CR>. The Hex val
ue of the command is 0xBF. All supplies, both the currently
addressed supply and all non
respond to this command; but only the cu
dressed supply (if any) will respond with the ‘OK’.

Addressed commands with response
Send (0x80 + Address) (1 byte binary
send 2 times sequentially). The supply will return the contents
of the Status Condition Register, the Status Enable Register, the Status Event Re
Fault Condition Register, the Fault Enabl
e Register and the Fault Event Register IFEVE/). All registers
will be represented in two Hex bytes. Following the register data, a single dollar sign, $, will be added
to signal the end of data and the start of a chec
sum. The checksum will be the sum of
data and will be represented in two Hex bytes. The transmission will end with the CR character. If r
petitive sending of SRQs was active and the supply was sending them, the supply will stop sen
repetitive SRQs but leave the function activ
e. The contents of the registers will not be destroyed. Note
that the supply does snot have to be the active addressed su
Note that this command will not execute if another command is being processed.
Print the total time the suppl
y has operated under AC power. Send 2 bytes in sequence, A6 Hex and
the address of the supply in binary. A 32 bit integer will be returned in 8 Hex bytes. The data will be
the number of minutes that power has been ‘ON’ in the supply in binary. A ‘$’ sign a
checksum will be appended to the data. There is no method provided to reset this number.
Send (0xC0 + Address) (1 byte binary
send 2 times sequentially). The supply will return the last
message sent. Note that the s
upply does not have to be the active addressed su
This command will not execute if another command is being processed.
Note that Single byte commands do not load data into the supply’s data output buffer.
Thus this command will not cause the supply to
retransmit data obtained from any previous Single
Send (0xC0 + Address) (1 byte binary
send 2 times sequentially). The supply will return the last
message sent. Note that the supply does not have to be the active ad
This command will not execute if another command is being processed.
Note that Single byte commands do not load data into the supply’s data output buffer. Thus this co
mand will not cause the supply to retransmit data obtained from any prev
Test if MD Mode is Installed
Send AA Hex followed by the address of the supply in binary. If not installed, the supply will return a
‘1’. If installed, the supply will return a ‘0’.
Addressed commands without response
Send (0xE0 + Address) (1 byte binary
send 2 times sequentially). The supply will stop re
SRQ. If Enable SRQ retransmission is active, it will remain active.
Re-enable SRQ with out reading/clearing the SEVE Register
Send A5 Hex followed by the
address of the supply in binary and new SRQ’s generated by new
events in the Fault Event will be enabled without reading and clearing the Status Event Register. All
events previously recorded in the Fault Event Register must have been serviced by the user
ware prior to this command to take affect.

3. SINGLE BYTE COMMUNICATIONS
Set supplies out of MD Mode (d
Set supplies into MD Mode
Disable retransmission of SRQs by
Enable retransmission of SRQs by
All supplies will halt transmission and
Non destructive read of all register. x
xxxx is the address of the supply in
Re-enable SRQ without reading or
clearing the SEVE Register. xxxx xxxx
is the address of the supply in binary.
Read the time the supply is active u
der AC Power. xxxx xxxx is the a
dress of the supply in binary. Returns a
32 Bit integer as 8 Hex bytes. A ‘$’
sign is appended to the data followed
Retransmit last response from a co
mand. x xxxx is the address of the
Acknowledge SRQ. If retransmission
SRQ is enabled, it will remain e
abled for the next SRQ. X xxxx is the
address of the supply in binary.
Returns a 0 if not installed or a 1 if i
stalled. A ‘$’ sign followed by a 2 byte
checksum and Carriage Return is a
pended to the data. xxxx xxxx is the
address of the supply in binary.
SRQ from supply when in MD Mode. X
xxxx is the address of the supply in

4: Current programming range
5: Current programming range
The power supply can accept values higher 5% than the table values, however it is not recommended to
program the power supply over the rated values.

8 for definition of the registers.
Reads the complete power supply status.
Returns ASCII characters representing the following data, separated by commas:
MV<actual (measured) voltage> PC<programmed (set) current>
PV<programmed (set) voltage>
MC<actual (measured) current> FR<fault register, 2
Example response: MV(45.201),PV(45), MC(4.3257), PC(10), SR(30), FR(00)
Reads Fault Conditional Register. Returns 2
Set Fault Enable Register using 2
Reads Fault Enable Register. Returns 2
Reads Fault Event Register. Returns 2
digit hex. Clears bits of Fault Event Register.
Reads Status Conditional Register. Retur
Sets Status Enable Register using 2
Reads Status Enable Register. Returns 2
Reads Status Event register. Returns 2
digit hex. Clears bits of Status Event register.
7.11 STATUS, ERROR AND SR
7.11.1 General Description
This Section describes the various status error and SRQ registers structure. The registers can be
read or set via the RS232/RS485 commands. When using the IEEE option, refer to the User’s Manual
pply IEEE Programming Interface.
7 for the Status and Error Registers Diagram.

Query Response (”message”)
One response for every command
from all zeroes to any bit set.
Setting more SEVE bits does
Fig.7-7: Status and Error Registers Diagram
7.11.2 Conditional Registers
The fault Condition Register and the Status Condition Register are read only registers that th
may read to see the condition of the Power supply. Refer to Table 7
8 for description of the Fault
tion Register bits and Table 7
9 for the Status Condition register bits.

7.11.2 Conditional Registers (continued)
The AC input returns to normal.
The power supply cools down.
The supply output is turned On by front
panel button or OUT 1 command.
The supply output is turned ON by front
Rear panel J1 “Shut Off” condition has
The supply output is turned On by front
panel button or OUT 1 command
Rear panel J1 Enable terminals closed.
9: Status Condition Register
Output is ON and the supply is not in
Output is ON and the supply is not in
One or more faults are active and fault
reporting is enabled (using “FENAxx”).
Fault Event Register cleared (FEVE?).
Front Panel or serial command).
Fold protection disabled (fr
Panel or serial command).
Supply in Remote mode or Local
Service Request: Enable and Event Registers
The conditional Registers are contin
uously monitored. When a change is detected in a register bit
which is enabled, the power supply will generate an SRQ message.
The SRQ message is: “Inn” terminated by CR, where the nn is the power supply address. The SRQ
will be generated either in Local o

13 for details of the Enable and Event registers.
The Fault Enable Register is set to the enable faults SRQs.
10: Fault Enable Register
where nn is hexadecimal (if
nn=”00”, no fault SRQs will
The Fault Event will set a bit if a condition occurs and it is Enabled. The register is cleared when
FEVE?, CLS or RST commands are received.
clear the Fault Event Regi
ter. (The Fault Event Regi
ter is not cleared by RST)

The Status Enable Register is set by the user to Enable SRQs for changes in power supply status.
12: Status Enable Register
If “nn”=00, no SRQ is sent
when there is a change in
tatus Condition Register.
The Status Event Register will set a bit if a change in the power supply status occurs and it is e
abled. The register is cleared when the “SEVE?” or “CLS” commands are received.
register will generate SRQ.
13: Status Event Register

7.12 SERIAL COMMUNICATION TEST SET
Use the following instructions as bas
up to test the serial communication operation.
: PC with Windows Hyper Terminal, software installed, Genesys
Power supply, RS232 cable.
2.1 Open Hyper Terminal…………………….
2.4 Configure port properties:
2.5 Open Properties in the program
Select Echo characters locally, select send line ends with line feed.
On some PC systems, pressing the number keypad “Enter” will distort
displayed messages. Use the alphabetic “E
power supply to the PC using the RS232 cable.
3.2 Set via the front panel: Baud Rate: 9600, Address: 06 (default).
3.3 Set via the rear panel: RS232/RS485 to RS232 (refer to Section 4
4.1 Model identification:
Power supply response: “OK”
Power supply response: “OK”
PC write: PCn (for values of n see Tables 7
-6)Power supply response: “OK”
The power supply should turn on and th
e display will indicate the actual Output Voltage
and the actual Output Current.

CHAPTER 8 ISOLATED ANALOG PROGRAMMING OPTION
Isolated Analog Programming is an internal Option Card for analog programming of the Genesys
ries. The option is factory installed and cannot be obtained with a GPIB (IEEE
Interface. Output Voltage and Output Current can be programmed and readback through optically is
nals which are isolated from all other ground references in the po
There are two types of Isolated Analog programming cards:
10V option (PN: IS510): Using 0
10V signals for programming and readback.
20mA option (PN: IS420): Using current signals for programming and readback.
Output Voltage programming accuracy
%+/-1Output Current programming accuracy
%+/-1Output Voltage programming temperature coefficient
Output Current programming temperature coefficie
Max. voltage between program inputs and supply outputs
Output Voltage monitoring accuracy
Output Current monitoring accuracy
Output Impedance (see Note)
Max. voltage between monitoring outputs and supply ou
Use 100Kohm minimum input impedance for the monitoring circuits to minimize the readback error.
4-20mA option (PN: IS420)
put Voltage programming accuracy
%+/-1Output Current programming accuracy
%+/-1Output Voltage programming temperature coefficient
Output Current programming temperature coefficient
Max. voltage between program inputs and supply outputs
Output Voltage monitoring accuracy
Output Current monitoring accuracy
ween monitoring outputs and supply ou

When the Isolated Analog Option is installed, do not apply any signals to the
non-isolated VPGM and IPGM (J1
. All other J1 features may
be used normally. Refer to Section 4.5 for a description of J1 features.
8.3 ISOLATED PROGRAMMING & MONITORING CONNECTOR
1 for detailed description of the rear panel Isolated Programming & Monitoring
connector. To provide the lowest noise perfor
mance, it is recommended to use shielded
1 for description of the Isolated Analog Programming & Monitoring connector.
Isolated programming plug P/N: MC1.5/8
1: Detailed description of Isolate
d programming & Monitoring connector
Shield, connected internally to
chassis of the power supply.
Output Voltage programming i
Output Current programming i
Ground for programming signals.
Ground for programming signals.
Output voltage monitoring output
Output current monitoring output
Shield, connected internally to
Fig.8-1: Isolated Programming & Monitoring connector

To prevent damage to the unit, do not progr
am the output voltage and
current to higher than the power supply rating.
12 must be shorted together with a wire jumper.
12 must be shorted together
SW1 position 3 and 4 must be in the Up position for operation
20mA Isolated Programming and Monitoring.
8.4 SETUP AND OPERATING INSTRUCTIONS
8.4.1 Setting up the power supply for 0
Perform the following procedure to configure the power supply:
Turn the power supply AC power switch to Off.
Connect a wire jumper between J1
4).3.Set the Setup switch SW1, positions 1 and 2 to the UP po
Set SW1, position 3 to select the Programming Voltage Range: Down=0
Set SW1, position 4 to select the Monitoring Range: Down=0
Ensure that SW1, positions 7 and 8 are in the Down position.
Connect the programming sources
to the mating plug of the Isolated Programming connector.
Observe for correct polarity of the voltage source.
Set the programming sources to the desired levels and turn the power supply ON.
Setting up the power supply for 4
20mA Isolated Programming
Perform the following procedure to configure the power supply:
Turn the power supply AC power switch to Off.
Connect a wire jumper between J1
4).3.Set the Setup switch SW1, positions 1 and 2 to the Up position.
Set SW1, position 3 to the Up position.
Set SW1, position 4 to the Up position.
Ensure that SW1 positions 1 and 2 to their Up position.
Connect the programming source to the mating plug of the Isolated Programming connector.
Observe for correct polari
ty of the voltage source.
Set the programming sources to the desired levels and turn the power supply ON.

This Chapter provides information about maintenance, calibration and troubleshooting.
Units requiring repair during the warranty period should be returned to a TDK
authorized service facility. Refer to the addresses listing on the back cover of this User’s Manual. U
than the authorized service facilities may void the warranty.
No routine maintenance of the power supply is required except for periodic cleaning. To clean,
disconnect the unit from the AC supply and allow 30sec. For discharging i
nternal voltages. The front
panel and the metal surfaces should be cleaned using a mild solution of detergent and water. The
solution should be applied onto a soft cloth, and not directly to the surface of the unit. Do not use
aromatic hydocarbons or chlor
inated solvents for cleaning. Use low pressure compressed air to blow
9.4 ADJUSTMENTS AND CALIBRATION
No internal adjustment or calibration is required. There is NO REASON to open the power supply
9.5 PARTS REPLACEMENT AND REPAIR
As repairs are made only by the manufacturer or by authorized service facilities, no parts replac
information is provided in the manual. In case of failure, unusual or erratic operation of the unit, co
Lambda Americas Inc. sales or servic
e facility nearest you. Please refer to the TDK
Lambda Americas Inc. sales offices addresses lis
ing on the back cover of this User’s Manual.
If the power supply appears to be operating improperly, use the Troubleshooting Guide (Table 9
determine whether the power supply, load or external control circuit are the cause.
Configure the power supply for basic front panel operation and perform the tests of Section 3.8 to d
termine if the problem is with the supply.
e basic checks that can be performed to diagnose problems, with references to
Sections of this User’s Manual for further information.
Check continuity, replace if
No output. All displays and
Output is present momentarily
but shuts Off quickly. The
Output is present momentarily
but shuts off quickly.The
negative load wire is loose.

Output Voltage will not adjust.
Front panel CC LED is On.
Is the unit in constant current
setting and load current.
Front panel CV Led is On.
Check if output voltage is
adjusted above OVP setting
Set OVP or UVL so they will
Output Current will not adjust.
Front panel CV LED is on.
Large ripple present in output.
Is the voltage drop on the
wires connection for noise
No output. Display indicates
5.3No output. Front panel
Setup switch SW1 setting.
Check rear panel J1 Output
installed adjacent to heat
Check Foldback setting and
Front panel CV LED is on.
according to User’s Manual
The front panel controls are
and wait until the display
There are no user replaceable fuses in the power supply. Internal fuses are sized for fault protection
and if a fuse was opened, it would indicate that service is required. Fuse re
by qualified technical personnel. Refer to Table 9
2 for a listing of the fuses.