2260B Series Multi-Range
Programmable DC Power Supplies
User’s Manual
077104602 June 2022
tek.com/keithley
*P077104602*
077104602
Background
The 1080W (2260B-30-108/80-40/ 250-13/800-
4) models use a universal power input that can
be used with 100 and 200 VAC systems. To
connect or replace the power cord, use the
procedure below:
Warning
The following procedure should only be attempted
by competent persons.
Ensure the AC power cord is not connected to
power.
Removal
1. Turn off the power switch.
1
2. Unscrew the power cord
strain relief.
3. Remove the 2 screws
holding the power cord
cover and remove.
3
2
ADDENDUM
Please replace the “Set up” section on page 40 through page 41 of
the 2260B user manual with the following replacement:
Set Up
Line Voltage Connection – 1080W Models
4. Slide the cover off the AC
terminals.
5. Remove the AC power
cord wires.
5
4
Installation
1. Thread the power cord through the strain relief
and through the power cord cover.
1
2. Connect the AC power cord
wires to the AC input
terminals.
White/Blue /Black(India)
Neutral (N)
Green/Green-yellow
GND ( )
Black/Brown/Red(India)
Line (L)
LN
Line
Neutral
Ground
3. Set the cover over the AC
terminals.
3
4. Screw the power cord cover
onto the rear panel using
the supplied screws.
5. Screw the strain relief onto
the power cord cover.
4
5
Series 2260B
Multi-Range Programmable DC Power Supplies
USER MANUAL
ISO-9001 CERTIFIED MANUFACTURER
This manual contains proprietary information, which is protected by
copyright. All rights are reserved. No part of this manual may be
photocopied, reproduced or translated to another language without
prior written consent.
The information in this manual was correct at the time of printing.
However, we continue to improve products and reserves the rights to
change specification, equipment, and maintenance procedures at any
time without notice.
Table of Contents
Table of Contents
SAFETY INSTRUCTIONS .................................................. 5
GETTING STARTED .......................................................... 9
2260B Series Overview ........................................... 11
Appearance ............................................................ 18
Theory of Operation ............................................... 25
OPERATION .................................................................. 38
Set Up ................................................................... 40
Basic Operation ..................................................... 60
Parallel / Series Operation ..................................... 75
Test Sequence ........................................................ 90
CONFIGURATION ......................................................... 102
Configuration ....................................................... 103
ANALOG CONTROL ...................................................... 122
Analog Remote Control Overview ......................... 123
Remote Monitoring .............................................. 139
COMMUNICATION INTERFACE .................................... 144
Interface Configuration ........................................ 145
FIRMWARE UPGRADE PROCEDURE .............................. 158
Firmware Update ................................................. 159
Check the Firmware Version ................................. 162
Kernel Update ...................................................... 164
Check the Kernel Version ..................................... 167
MAINTENANCE ............................................................ 169
3
2260B Series User Manual
FAQ .............................................................................. 171
APPENDIX .................................................................... 173
2260B Default Settings ........................................ 173
Error Messages & Messages ................................ 176
LED Display Format ............................................. 176
2260B Specifications ............................................ 177
2260B Dimensions ............................................... 194
INDEX .......................................................................... 201
4
SAFETY INSTRUCTIONS
WARNING
Warning: Identifies conditions or practices that
could result in injury or loss of life.
CAUTION
Caution: Identifies conditions or practices that
could result in damage to the instrument or to
other properties.
DANGER High Voltage
Attention Refer to the Manual
Protective Conductor Terminal
Earth (ground) Terminal
SAFETY INSTRUCTIONS
This chapter contains important safety
instructions that you must follow during
operation and storage. Read the following before
any operation to insure your safety and to keep
the instrument in the best possible condition.
Safety Symbols
These safety symbols may appear in this manual or on the
instrument.
5
2260B Series User Manual
Do not dispose electronic equipment as unsorted
municipal waste. Please use a separate collection
facility or contact the supplier from which this
instrument was purchased.
General
Guideline
CAUTION
Do not place any heavy object on the
instrument.
Avoid severe impact or rough handling that
leads to damaging the instrument.
Do not discharge static electricity to the
instrument.
Use only mating connectors, not bare wires, for
the terminals.
Do not block the cooling fan opening.
Do not disassemble the instrument unless you
are qualified.
(Measurement categories) EN 61010-1:2010 and EN 61010-2-030
specify the measurement categories and their requirements as
follows. The 2260B falls under category II.
Measurement category IV is for measurement performed at the
source of low-voltage installation.
Measurement category III is for measurement performed in the
building installation.
Measurement category II is for measurement performed on the
circuits directly connected to the low voltage installation.
0 is for measurements performed on circuits not directly
connected to Mains.
Power Supply
WARNING
To avoid electrical shock connect the protective
grounding conductor of the AC power cord to
an earth ground.
Safety Guidelines
6
SAFETY INSTRUCTIONS
Cleaning the
Instrument
Disconnect the power cord before cleaning.
Use a soft cloth dampened in a solution of mild
detergent and water. Do not spray any liquid.
Do not use chemicals containing harsh material
such as benzene, toluene, xylene, and acetone.
Operation
Environment
Location: Indoor, no direct sunlight, dust free,
almost non-conductive pollution (Note below)
Relative Humidity: 20%~ 85%
Altitude: < 2000m
Temperature: 0°C to 50°C
(Pollution Degree) EN 61010-1:2010 and EN 61010-2-030specify the
pollution degrees and their requirements as follows. The Instrument
falls under degree 2.
Pollution refers to “addition of foreign matter, solid, liquid, or
gaseous (ionized gases), that may produce a reduction of dielectric
strength or surface resistivity”.
Pollution degree 1: No pollution or only dry, non-conductive
pollution occurs. The pollution has no influence.
Pollution degree 2: Normally only non-conductive pollution
occurs. Occasionally, however, a temporary conductivity caused
by condensation must be expected.
Pollution degree 3: Conductive pollution occurs, or dry, non-
conductive pollution occurs which becomes conductive due to
condensation which is expected. In such conditions, equipment
is normally protected against exposure to direct sunlight,
precipitation, and full wind pressure, but neither temperature
nor humidity is controlled.
Storage
environment
Disposal
Do not dispose this instrument as unsorted
municipal waste. Please use a separate collection
facility or contact the supplier from which this
instrument was purchased. Please make sure
discarded electrical waste is properly recycled to
reduce environmental impact.
Location: Indoor
Temperature: -15°C to 70°C
Relative Humidity: <90%
7
2260B Series User Manual
Green/ Yellow:
Earth
Blue:
Neutral
Brown:
Live (Phase)
Power cord for the United Kingdom
When using the power supply in the United Kingdom, make sure
the power cord meets the following safety instructions.
NOTE: This lead/appliance must only be wired by competent persons
WARNING: THIS APPLIANCE MUST BE EARTHED
IMPORTANT: The wires in this lead are coloured in accordance with the
following code:
As the colours of the wires in main leads may not correspond with
the coloured marking identified in your plug/appliance, proceed
as follows:
The wire which is coloured Green & Yellow must be connected to
the Earth terminal marked with either the letter E, the earth symbol
or coloured Green/Green & Yellow.
The wire which is coloured Blue must be connected to the terminal
which is marked with the letter N or coloured Blue or Black.
The wire which is coloured Brown must be connected to the
terminal marked with the letter L or P or coloured Brown or Red.
If in doubt, consult the instructions provided with the equipment
or contact the supplier.
This cable/appliance should be protected by a suitably rated and
approved HBC mains fuse: refer to the rating information on the
equipment and/or user instructions for details. As a guide, a cable
of 0.75mm2 should be protected by a 3A or 5A fuse. Larger
conductors would normally require 13A types, depending on the
connection method used.
Any exposed wiring from a cable, plug or connection that is
engaged in a live socket is extremely hazardous. If a cable or plug is
deemed hazardous, turn off the mains power and remove the cable,
any fuses and fuse assemblies. All hazardous wiring must be
immediately destroyed and replaced in accordance to the above
standard.
8
GETTING STARTED
2260B Series Overview ........................................... 11
Series lineup ...............................................................................................11
Main Features ............................................................................................12
Accessories .................................................................................................13
2260B-30/80 Accessories ..............................................................13
2260B-250/800 Accessories ..........................................................15
Package Contents ......................................................................................17
Appearance ............................................................ 18
2260B Front Panel ....................................................................................18
Rear Panel ..................................................................................................21
Theory of Operation ............................................... 25
Operating Area Description ...................................................................25
CC and CV Mode .....................................................................................28
Slew Rate ....................................................................................................30
Bleeder Control .........................................................................................30
Internal Resistance....................................................................................31
Alarms .........................................................................................................32
GETTING STARTED
This chapter describes the power supply in a
nutshell, including its main features and front /
rear panel introduction. After going through the
overview, please read the theory of operation to
become familiar with the operating modes,
protection modes and other safety considerations.
9
2260B Series User Manual
Considerations .......................................................................................... 33
Grounding ................................................................................................. 36
10
GETTING STARTED
Note
Throughout the user manual, 2260B-30, 2260B-80,
2260B-250 or 2260B-800 will refer to any of the
2260B models with a maximum voltage rating of
30V, 80V, 250V or 800V, respectively.
Model name
Type
Voltage Rating
Current Rating
Power
2260B-30-36
360W models
0~30V
0~36A
360W
2260B-80-13
360W models
0~80V
0~13.5A
360W
2260B-250-4
360W models
0~250V
0~4.5A
360W
2260B-800-1
360W models
0~800V
0~1.44A
360W
2260B-30-72
720W models
0~30V
0~72A
720W
2260B-80-27
720W models
0~80V
0~27A
720W
2260B-250-9
720W models
0~250V
0~9A
720W
2260B-800-2
720W models
0~800V
0~2.88A
720W
2260B-30-108
1080W models
0~30V
0~108A
1080W
2260B-80-40
1080W models
0~80V
0~40.5A
1080W
2260B-250-13
1080W models
0~250V
0~13.5A
1080W
2260B-800-4
1080W models
0~800V
0~4.32A
1080W
2260B Series Overview
Series lineup
The 2260B series consists of 12 models, divided into 3 different
model types covering 3 power capacities: 360W models, 720W
models and 1080W models.
11
2260B Series User Manual
360 W models
720 W models
1080 W models
Performance
High performance/power
Power efficient switching type power supply
Low impact on load devices
Fast transient recovery time of 1ms
Fast output response time
Features
OVP, OCP and OTP protection
Adjustable voltage and current slew rates
User adjustable bleeder control to quickly
dissipate the power after shutdown to safe
levels.
Extensive remote monitoring and control
options
Support for series* and parallel connections.
*(30, 80 volt models only)
Power on configuration settings.
Web server monitoring and control
Apart from the differences in output, each unit differs in size. The
720W and 1080W models are larger than the 360W models to
accommodate the increase in power.
Main Features
12
Interface
Ethernet port
Analog connector for analog voltage and current
monitoring
USB host and device port
Accessories
Standard
Accessories
Part number
Description
196353000
174627900
020312300
060316400
Please check the contents before using the 2260B.
2260B-30/80 Accessories
Test Leads x1(10AWG, Max. 45A,
Max.600V)
USB Cable
Basic Accessories Kit:(360W, 720W)
M4 terminal screws and washers x2, M8
terminal bolts, nuts and washers x2, Air
filter x1, Analog control protection
dummy x1, Analog control lock lever x1,
Output terminal cover (top & bottom)
GETTING STARTED
Basic Accessories Kit:(1080W)
M4 terminal screws and washers x2, M8
terminal bolts, nuts and washers x2, Air
filter x1, Analog control protection
dummy x1, Analog control lock lever x1,
Output terminal cover (top & bottom),
Strain relief.
Quick Start Guide
Power cord
China RoHS Declaration
Calibration of Traceable Certificate
071305503
PWRKI A*_
071305700
001163200
13
2260B Series User Manual
001163300
Packing Check List
Optional
Accessories
Part number
Description
2260-001
Accessory Kit:
Pin contact x10, Socket x1, Protection
cover x1
2260-002
Simple IDC Tool
2260-003
Contact Removal Tool
2260-004
Basic Accessory Kit:
M4 terminal screws and washers x2, M8
terminal bolts, nuts and washers x2, Air
filter x1, Analog control protection
dummy x1, Analog control lock lever x1,
Output terminal cover (top & bottom),
Strain relief
2260-005
Cable for 2 units in Series connection.
2260-006
Cable for 2 units in Parallel connection.
2260-007
Cable for 3 units in Parallel connection.
2260-008
Test Lead Set with Lugs
2260B-EXTERM
Extended terminal
2260B-RMK-JIS
Rack mount adapter (JIS)
2260B-RMK-EIA
Rack mount adapter (EIA)
2260B-GPIB-USB
GPIB to USB adapter
Download
Name
Description
keithley_2260B.inf
USB driver
14
2260B-250/800 Accessories
Standard
Accessories
Part number
Description
196353900
174627900
020315700
060316500
PWRKI A*_
071305700
001163200
001163300
GETTING STARTED
Test Leads x1(20AWG, Max. 9A, Max.
3kV)
USB Cable
Basic Accessories Kit: (360W, 720W)
Air filter x1, Analog control protection
dummy x1, Analog control lock lever x1,
Output terminal cover (top & bottom),
High voltage output terminal
Basic Accessories Kit: (1080W)
Air filter x1, Analog control protection
dummy x1, Analog control lock lever x1,
Output terminal cover (top & bottom),
High voltage output terminal, Strain relief
071305503
Quick Start Guide
Power cord
China RoHS Declaration
Calibration of Traceable Certificate
Packing Check List
15
2260B Series User Manual
Optional
Accessories
Part number
Description
2260-001
Accessory Kit:
Pin contact x10, Socket x1, Protection
cover x1
2260-002
Simple IDC Tool
2260-003
Contact Removal Tool
2260-005
Cable for 2 units in Series connection.
2260-006
Parallel operation cable for 2 units.
2260-007
Parallel operation cable for 3 units.
2260-009
Test Leads (for High Voltage)
2260-010
Basic Accessories Kit:
Air filter x1, Analog control protection
dummy x1, Analog control lock lever x1,
Output terminal cover (top & bottom),
High voltage output terminal, Strain relief
2260B-EXTERMHV
Extended terminal (For 250V/800V HV
models)
2260B-RMK-JIS
Rack mount adapter (JIS)
2260B-RMK-EIA
Rack mount adapter (EIA)
2260B-GPIB-USB
GPIB to USB adapter
Download
Name
Description
keithley_2260B.inf
USB driver
16
Package Contents
Opening the box
Contents
(single unit)
Power cord x1
China RoHS
Declaration
Calibration of
Traceable Certificate
Packing Check List
Check the contents before using the 2260B.
Main unit
Test leads x1
USB cable
Basic Accessories Kit
Quick Start Guide
GETTING STARTED
17
2260B Series User Manual
Current
knob
Output
key
Power
switch
Voltage
knob
USB A
port
Display
Cover
panel
Function
keys
2260B-30-108, 80-40, 250-13, 800-4 (1080W)
2260B-30-36, 80-13,
250-4, 800-1 (360W)
2260B-30-108 1080W
Appearance
2260B Front Panel
2260B-30-72, 80-27, 250-9, 800-2 (720W)
18
GETTING STARTED
Function Keys
The Function keys along with the Output key will
light up when a key is active.
The Function key is used to
configure the power supply.
Set the overcurrent or overvoltage
protection levels.
Sets the current and voltage limits.
Used to run customized Test
sequence for testing.
Locks or unlocks the panel keys to
prevent accidentally changing
panel settings.
Toggles the display from viewing
V/A V/W or A/W*.
*Press the Voltage knob for V/W,
press the Current knob for A/W.
Display
Indicators
VSR
Voltage Slew Rate
C V
Constant Voltage Mode
RMT
Remote Control Mode
ALM
Alarm on
DLY
Delay Output
C C
Constant Current Mode
ISR
Current Slew Rate
20 40 60
80 100 % W
Power bar
Indicates the current power output
as a percentage.
19
2260B Series User Manual
Voltage Knob
Sets the voltage.
Current Knob
Sets the current.
Output
Press to turn on the output. The
Output key will light up when the
output is active.
USB
The USB A port is used to update
the firmware. The firmware can
only be updated at a service
center.
Power Switch
Used to turn the power on/off.
20
GETTING STARTED
Output
terminal
(+)
Fan
Output
terminal (-)
USB B
port
LAN
AC Input
Senseterminal
Analog control
connector
LAN
100 240V
1000VA MAX.
AC
47 63Hz
SER.NO. LABEL
Sense+
terminal
Chassis
ground
2260B-30-108, 80-40 (1080W)
2260B-30-36, 80-13
(360W)
100 240VAC
1500VA MAX.
47 63Hz
LAN
LN
SER.NO. LABEL
AC Input
LAN
100 240V
47 63Hz 500VA MAX.
AC
Rear Panel
2260B-30-72, 80-27 (720W)
21
2260B Series User Manual
LAN
100 240V
1000VA MAX.
AC
47 63Hz
SER.NO. LABEL
V SN.C. S V
Output
terminals +V
Fan
Chassis
ground
USB B
port
LAN
AC Input
Senseterminal
Analog control
connector
Sense+
terminal
Output
terminals -V
2260B-250-13, 800-4 (1080W)
2260B-250-4, 800-1
(360W)
LAN
LN
SER.NO. LABEL
47 63Hz
1500VA MAX.
AC100 240V
V VSN.C. S
AC Input
LAN
100 240V
47 63Hz500VA MAX.
AC
V SN.C. S V
2260B-250-9, 800-2 (720W)
22
GETTING STARTED
Analog Control
Connector
Standard 26 pin MIL connector
(OMRON XG4 IDC plug).
The analog control connector is
used to monitor current and voltage
output, machine status (OVP, OCP,
OTP etc.), and for analog control of
the current and voltage output.
Use an OMRON XG5 IDC socket as
the mating socket.
Output Terminals
(30, 80 volt
models)
Positive (+) and negative (-) output
terminals.
Chassis ground
Sense (-S) and Sense (+S) terminals.
Output Terminals
(250, 800 volt
models)
The 250 and 800 volt models use a 9 pin connector
and a plug for the output and sense terminal
connections. The plug is a MC420-38109Z plug by
DECA SwitchLab Inc. This plug is also available
separately.
V SN.C. S V
Positive (V+) and negative (V-)
output terminals (3 of each).
V SN.C. S V
Chassis ground
V SN.C. S V
Sense (-S) and Sense (+S)
terminals.
23
2260B Series User Manual
USB B port
The USB B port is used for remote
control.
Fans
Temperature controlled fans
Ethernet Port
LAN
The Ethernet port is used for remote
control and digital monitoring from
a PC.
Line Voltage
Input
360W models:
2260B-30-36/80-13/250-4/ 800-1
720W models:
2260B-30-72/80-27/250-9/ 800-2
Voltage Input: 100~240 VAC
Line frequency: 50Hz/60 Hz
(Automatically switchable)
AC Input voltage range:
85VAC~265VAC
Frequency: 47Hz~63Hz
Line Voltage
Input
LN
1080W models:
2260B-30-108/80-40/250-13/800-4
Voltage Input: 100~240 VAC
Line frequency: 50Hz/60 Hz
(Automatically switchable)
24
GETTING STARTED
Background
The 2260B power supplies are regulated DC
power supplies with a high voltage and current
output. These operate in CC (Constant current)
or CV (Constant voltage) mode within a wide
operating range limited only by the output
power.
The operating area of each power supply is
determined by the rated output power as well
as the voltage and current rating. For example
the operating area and rated power output for
the 2260B- 30-36 is shown below.
Voltage
Current
30
360W rated power
10
12 36
Operating Area
When the power supply is configured so that
the total output (current x voltage output) is
less than the rated power output, the power
supply functions as a typical constant current,
constant voltage power supply.
If however, the power supply is configured
such that the total output (current x voltage
Theory of Operation
The theory of operation chapter describes the basic principles of
operation, protection modes and important considerations that
must be taken into account before use.
Operating Area Description
25
2260B Series User Manual
output) exceeds the rated power output, the
effective output is actually limited to the power
limit of the unit. In this case the output current
and voltage then depend purely on the load
value.
Below is a comparison of the operating areas of
each power supply.
2260B 800V Series Operating Area
0
100
800
Current (A)
Voltage (V)
200
300
400
700
0
1
2
3
4
900
5
1080W
702W
360W
500
600
0.45 0.9 1.35
800
250
2.88 4.321.44
2260B 250V Series Operating Area
Current (A)
Voltage (V)
0
3
6
9
12 15
1080W
720W
360W
1.44 2.88 4.32
250
80
9 13.54.5
250
200
150
100
50
0
26
GETTING STARTED
2260B 80V Series Operating Area
Current (A)
Voltage (V)
26.6
4.5 9.0 13.5
80
1080W
720W
360W
30
45
40205
10
15
25
0
35
0
20
40
60
80
90
27 40.5
2260B 30V Series Operating Area
0
5
30
Current (A)
Voltage (V)
10
15
20
25
0 20
40
60
80
100
10
12 24 36
30
35
120
1080W
720W
360W
72 108
27
2260B Series User Manual
CC and CV mode
Description
When the power supply is operating in
constant current mode (CC) a constant current
will be supplied to the load. When in constant
current mode the voltage output can vary,
while the current remains constant. When the
load resistance increases to the point where the
current limit (I
SET
) can no longer be sustained
the power supply switches to CV mode. The
point where the power supply switches modes
is the crossover point.
When the power supply is operating in CV
mode, a constant voltage will be supplied to
the load, while the current will vary as the load
varies. At the point that the load resistance is
too low to maintain a constant voltage, the
power supply will switch to CC mode and
maintain the set current limit.
The conditions that determine whether the
power supply operates in CC or CV mode
depends on the set current (I
SET
), the set voltage
(V
SET
), the load resistance (RL) and the critical
resistance (RC). The critical resistance is
determined by V
SET/ISET
. The power supply
will operate in CV mode when the load
resistance is greater than the critical resistance.
This means that the voltage output will be
equal to the V
SET
voltage but the current will be
less than I
SET
. If the load resistance is reduced
to the point that the current output reaches the
I
SET
level, the power supply switches to CC
mode.
CC and CV Mode
28
GETTING STARTED
Conversely the power supply will operate in
CC mode when the load resistance is less than
the critical resistance. In CC mode the current
output is equal to I
SET
and the voltage output is
less than V
SET
.
RL=R
C
RL<R
C
VSET
ISET
CV
CC
V
I
RL>R
C
Crossover
point
29
2260B Series User Manual
Theory
The 2260B has selectable slew rates for CC and
CV mode. This gives the 2260B power supply
the ability to limit the current/voltage draw of
the power supply. Slew rate settings are
divided into High Speed Priority and Slew
Rate Priority. High Speed Priority mode
disables slew rate settings for CC or CV mode.
Slew Rate Priority mode allows for user
adjustable slew rates for CC or CV mode. The
rising and falling slew rate can be set
independently.
Slew rate=
Disabled
Slew rate =
Enabled
Background
The 2260B DC power supplies employ a bleed
resistor in parallel with the output terminals.
Load
Bleed
resistor
Bleed resistors are designed to dissipate the
power from the power supply filter capacitors
Slew Rate
Bleeder Control
30
GETTING STARTED
when power is turned off and the load is
disconnected. Without a bleed resistor, power
may remain charged on the filter capacitors for
some time and be potentially hazardous.
In addition, bleed resistors also allow for
smoother voltage regulation of the power
supply as the bleed resistor acts as a minimum
voltage load.
The bleed resistance can be turned on or off
using the configuration settings.
Note
By default the bleed resistance is on. For battery
charging applications, be sure to turn the bleed
resistance off as the bleed resistor can discharge
the connected battery when the unit is off.
Background
On the 2260B, the internal resistance of the
power supply can be user-defined in software.
(Internal Resistance Setting, page 31). When the
internal resistance is set it can be seen as a
resistance in series with the positive output
terminal. This allows the power supply to
simulate power sources that have internal
resistances such as lead acid batteries.
Internal
Resistance Range
Unit Model
Internal Resistance Range
2260B-30-36
0.000 ~ 0.833Ω
2260B-30-72
0.000 ~ 0.417Ω
2260B-30-108
0.000 ~ 0.278Ω
2260B-80-13
0.000 ~ 5.926Ω
2260B-80-27
0.000 ~ 2.963Ω
2260B-80-40
0.000 ~ 1.975Ω
2260B-250-4
0.00 ~ 55.55Ω
2260B-250-9
0.00 ~ 27.77Ω
2260B-250-13
0.00 ~ 18.51Ω
Internal Resistance
31
2260B Series User Manual
2260B-800-1
0.0 ~ 555.5Ω
2260B-800-2
0.0 ~ 277.8Ω
2260B-800-4
0.0 ~ 185.1Ω
OVP
Overvoltage protection (OVP) prevents a high
voltage from damaging the load.
OCP
Overcurrent protection prevents high current
from damaging the load.
OTP
Overtemperature protection protects the
instrument from overheating.
Power Switch Trip
When the Power Switch Trip configuration
setting is enabled, the power supply will
automatically shut down when a protection
setting has been tripped (OCP, OVP, OTP).
Alarm output
Alarms are output via the analog control
connector. The alarm output is an isolated
open-collector photo coupler output.
Alarms
The 2260B power supplies have a number of protection features.
When one of the protection alarms are set, the ALM icon on the
display will be lit. For details on how to set the protection modes,
please see page 60.
32
GETTING STARTED
Inrush current
When the power supply switch is first turned
on, an inrush current is generated. Ensure there
is enough power available for the power
supply when first turned on, especially if a
number of units are turned on at the same
time.
Caution
Allow at least 15 seconds between cycling the
power. Cycling the power on and off quickly can
cause the inrush current limiting circuit to fail as
well as reduce the working life of the input fuse
and power switch.
Pulsed or Peaked
loads
When the load has current peaks or is pulsed, it
is possible for the maximum current to exceed
the mean current value. The 2260B power
supply ammeter only indicates mean current
values, which means for pulsed current loads,
the actual current can exceed the indicated
value. For pulsed loads, the current limit must
be increased, or a power supply with a greater
capacity must be chosen. As shown below, a
pulsed load may exceed the current limit and
the indicated current on the power supply
ammeter.
Considerations
The following situations should be taken into consideration when
using the power supply.
33
2260B Series User Manual
Current limit
level
Measured
Ammeter
current
Reverse Current:
Regenerative load
When the power supply is connected to a
regenerative load such as a transformer or
inverter, reverse current will feed back to the
power supply. The 2260B power supply cannot
absorb reverse current. For loads that create
reverse current, connect a resistor in parallel to
the power supply to bypass the reverse
current. This description only applies when the
bleed resistance is off.
Resistor
Note
The current output will decrease by the amount of
current absorbed by the resistor.
Ensure the resistor used can withstand the power
capacity of the power supply/load.
34
GETTING STARTED
Reverse Current:
Accumulative
energy.
When the power supply is connected to a load
such as a battery, reverse current may flow
back to the power supply. To prevent damage
to the power supply, use a reverse-currentprotection diode in series between the power
supply and load.
Diode
CAUTION
Ensure the reverse withstand voltage of the diode
is able to withstand 2 times the rated output
voltage of the power supply and the forward
current capacity can withstand 3 to 10 times the
rated output current of the power supply.
Ensure the diode is able to withstand the heat
generated in the following scenarios.
When the diode is used to limit reverse voltage,
remote sensing cannot be used.
35
2260B Series User Manual
Floating
As the output terminals are floating, the load
and all load cables must have an insulation
capacity that is greater than the isolation
voltage of the power supply.
2260B
Load
Ext-V
Ext-R
Analog
connector
( ) Insulation capacity ≥ isolation voltage
of power supply
WARNING
If the insulation capacity of the load and load
cables is not greater than the isolation voltage of
the power supply, electric shock may occur.
Grounding
The output terminals of the 2260B power supplies are isolated with
respect to the protective grounding terminal. The insulation
capacity of the load, the load cables and other connected devices
must be taken into consideration when connected to the protective
ground or when floating.
36
GETTING STARTED
Grounded output
terminal
If the positive or negative terminal is connected
to the protective ground terminal, the
insulation capacity needed for the load and
load cables is greatly reduced. The insulation
capacity only needs to be greater than the
maximum output voltage of the power supply
with respect to ground.
2260B
Load
Ext-V
Ext-R
Analog
connector
( ) Insulation capacity ≥ voltage of power
supply with respect to ground
CAUTION
If using external voltage control, do not ground
the external voltage terminal as this will create a
short circuit.
37
2260B Series User Manual
Set Up .................................................................... 40
Line Voltage Connection – 1080W Models ........................................ 40
Filter Installation ...................................................................................... 42
Power Up .................................................................................................. 43
Wire Gauge Considerations ................................................................... 44
Output Terminals 2260B-30/80 ........................................................... 45
Using the Output Terminal Cover 2260B-30/80 .............................. 47
Output Terminals 2260B-250/800 ....................................................... 49
Using the Output Terminal Cover 2260B-250/800 .......................... 53
Using the Rack Mount Kit ..................................................................... 54
How to Use the Instrument ................................................................... 54
Reset to Factory Default Settings ......................................................... 56
View System Version and Build Date .................................................. 57
Basic Operation ..................................................... 60
Setting OVP/OCP Levels ...................................................................... 60
Set to CV Mode ....................................................................................... 63
Set to CC Mode ........................................................................................ 66
Display Modes .......................................................................................... 69
Panel Lock ................................................................................................. 70
Remote Sense ........................................................................................... 71
Parallel / Series Operation ..................................... 75
Master-Slave Parallel Overview ............................................................. 76
Master-Slave Parallel Connection ......................................................... 79
Master-Slave Parallel Operation ............................................................ 81
Master-Slave Series Overview................................................................ 84
Master-Slave Series Connection ............................................................ 86
Master-Slave Series Operation ............................................................... 88
Test Sequence ........................................................ 90
Test Sequence File Format ..................................................................... 91
Test Sequence Settings ............................................................................ 94
Setting the Test Sequence Settings ....................................................... 95
Load Test Sequence from USB ............................................................. 96
Run Test Sequence .................................................................................. 97
Export Test Sequence to USB ............................................................... 98
OPERATION
38
OPERATION
Remove Test Sequence ............................................................................99
Test Sequence Error Messages ............................................................ 100
39
2260B Series User Manual
Background
The 1080W (2260B-30-108/80-40/ 250-13/800-4)
models use a universal power input that can be
used with 100 and 200 VAC systems. To
connect or replace the power cord, use the
procedure below:
Warning
The following procedure should only be attempted
by competent persons.
Ensure the AC power cord is not connected to
power.
Removal
1. Turn off the power switch.
1
2. Unscrew the power cord
protective sheath.
3. Remove the 2 screws
holding the power cord
cover and remove.
3
2
Set Up
Line Voltage Connection – 1080W Models
40
OPERATION
4. Slide the cover off the AC
terminals.
5. Remove the AC power
cord wires.
5
4
Installation
1. Connect the AC power
cord wires to the AC input
terminals.
White/Blue Neutral (N)
Green/Green-
yellowGND ( )
Black/Brown Line (L)
LN
Line
Neutral
Ground
2. Set the cover back over the
AC terminals.
2
3. Re-install the power cord
cover.
4. Screw the power cord
sheath back onto the cover.
3
4
41
2260B Series User Manual
Background
The 2260B has a small filter that must first be
inserted under the control panel before
operation. The small filter must be inserted for
all models types (360W/720W/1080W).
Steps
1. Insert the small filter in the open area under the
control panel.
2. The unit is now ready to power up.
Filter Installation
42
OPERATION
Steps
1. 360W or 720W models:
Connect the power cord to
the rear panel socket.
1080W models: Connect
the power cord to the
universal power input.
Page 40
2. Press the POWER key. If used for the first time,
the default settings will appear on the display,
otherwise the 2260B recovers the state right
before the power was last turned OFF.
For default configuration settings, see page 173.
V
A
CAUTION
The power supply takes around 8 seconds to fully
turn on and shutdown.
Do not turn the power on and off quickly. Please
wait for the display to fully turn off.
Power Up
43
2260B Series User Manual
Background
Before connecting the output terminals to a
load, the wire gauge of the cables should be
considered.
It is essential that the current capacity of the
load cables is adequate. The rating of the cables
must equal or exceed the maximum current
rated output of the instrument.
Recommended
wire gauge
Wire Gauge
Nominal Cross
Section
Maximum Current
20
0.5 9 18
0.75
11
18 1 13
16
1.5
18
14
2.5
24
12 4 34
10 6 45 8 10
64 6 16
88 4 25
120 2 32
145 1 50
190 0 70
240 0 95
290 0 120
340
The maximum temperature rise can only be 60
degrees above the ambient temperature. The
ambient temperature must be less than 30 deg.
Wire Gauge Considerations
44
OPERATION
Background
Before connecting the output terminals to the
load, first consider whether voltage sense will
be used, the gauge of the cable wiring and the
withstand voltage of the cables and load.
The output terminals can be connected to load
cables using M4 sized screws or M8 sized bolts.
WARNING
Dangerous voltages. Ensure that the power to the
instrument is disabled before handling the power
supply output terminals. Failing to do so may lead
to electric shock.
Steps
1. Turn the power switch off.
2. Remove the output terminal cover.
Page 47
3. If necessary, screw the chassis
ground terminal to either the
positive or negative terminal. See
the grounding chapter for details.
Page 36
Sense joining plates
Ground
4. Choose a suitable wire gauge for
the load cables.
Page 44
Output Terminals 2260B-30/80
45
2260B Series User Manual
5. Choose a suitable crimp for the terminals.
6. If using voltage sense, remove the
sense terminal joining plates and
connect sensing wires to the
load(s).
Page 71
7. Connect the positive load cable to the positive
output terminal and the negative cable to the
negative output terminal.
8. Reattach the output terminal
cover.
Page 47
Connection with
local sense wiring
Using M4 screws
Negative
potential
Positive
potential
Using M8 bolts
Negative
potential
Positive
potential
Connection with
voltage sense
wiring
Using M4 screws
Sense +
Sense -
Using M8 bolts
Sense +
Sense -
46
OPERATION
Steps
1. Remove the screw holding the top cover to the
bottom cover.
2. Line-up the bottom cover with the notches in
the output terminals.
3. Place the top terminal cover over the bottom
cover.
Details
2
3
1
4. Use your thumb to slide the terminal covers
shut, as shown in the diagram below.
5. When the top and bottom covers are flush, re-
insert the screw that was removed in step 1.
4
5
Using the Output Terminal Cover 2260B-30/80
47
2260B Series User Manual
Removal
Reverse the procedure to remove the terminal
covers.
48
OPERATION
Background
The high voltage models (2260B-250 and 2260B
-800 models) use a 9 pin socket for the output
voltage and sense connections. The
corresponding plugs should be used to connect
the terminals to the appropriate cable.
Before connecting the output terminals to the
load, first consider whether voltage sense will
be used, the gauge of the cable wiring and the
withstand voltage of the cables and load.
WARNING
Dangerous voltages. Ensure that the power to the
instrument is disabled before handling the power
supply output terminals. Failing to do so may lead
to electric shock.
Please note the wire gauge used and the capacity
of the plug/socket. It may be necessary to wire the
load to a number of terminals to offset the
capacity over a number of terminals.
Output Connector
Overview
When using the output connector make sure
the wires that are used follow the following
guidelines:
Wire gauge:
AWG 26 to AWG 16
Strip length
6.5mm // 0.26 in.
Current rating
10A
Insulation resistance
AC 2000V min
Insulation withstand
voltage
>2000MΩ DC500V
Operation
Temperature
-40ºC to +105ºC
Output Terminals 2260B-250/800
49
2260B Series User Manual
Output Connector
Pinout
-V
-S
N.C.
+S
+V
-V: -V terminals (x3)
-S: -Sense terminal
NC: Not connected
+S: +Sense terminal
+V: +V terminals
(x3)
Wiring the
Connector Plug
c
Tighten
Loosen
a
b
a. Unscrew the
appropriate terminal
anticlockwise to
release the
receptacle.
b. Insert a wire that has
had at least ~7mm
stripped from the
insulation.
c. Tighten the
receptacle by
screwing clockwise.
Steps
1. Turn the power switch off.
2. Remove the output terminal cover.
Page 53
3. Choose a suitable wire gauge for
the load cables.
Page 44
4. Strip ~7mm from one end of each load cable.
5. Connect the positive load cable to one of the
+V pins and the negative cable to one of the -V
pins.
50
OPERATION
WARNING
Please note the wire gauge used and the capacity
of the plug/socket. It may be necessary to wire the
load to a number of terminals to offset the
capacity over a number of terminals.
6. If using local sense, connect the -S pin to a -V
pin, and connect the +S pin to a +V pin.
V SN.C. S V
7. If not using local sense, see the
remote sense section to wire the
sense terminals for remote
sensing.
Page 71
8. If necessary, connect the chassis
ground terminal to either the -V or
+V pin. See the grounding chapter
for details.
Page 36
V SN.C. S V
9. Reattach the output terminal
cover.
Page 53
51
2260B Series User Manual
Local Sense
Wiring
To positive
potential
To negative
potential
-V
+V
Remote Sense
Wiring
To positive
potential
To negative
potential
-S
-V
+V
+S
52
OPERATION
Steps
1. Screw the bottom
cover onto the rear
panel using the two
M4 screws.
1
2. Slide the top cover
over the bottom
cover.
2
3. Finally, secure the
top cover with the
screw in the center of
the top cover.
3
Removal
Reverse the procedure to remove the terminal
covers.
Using the Output Terminal Cover 2260B-250/800
53
2260B Series User Manual
Background
The 2260B series has an optional Rack Mount
Kit (Part number: [JIS] 2260B-RMK-JIS , [EIA]
2260B-RMK-EIA) that can be used to hold 6x
2260B 360W models, 3x 720W models, 2x
1080W models or a combination of all models
(1x 360W, 1x 720W and 1x 1080W).
Rack mount
diagram
360W 720W 1080W
Background
The 2260B power supplies use a novel method
of configuring parameter values only using the
Voltage or Current knobs. The knobs are used
to quickly edit parameter values at 0.01, 0.1 or 1
unit steps at a time.
When the user manual says to set a value or
parameter, use the steps below.
Example
Use the Voltage knob to set a voltage of 10.05
volts.
Using the Rack Mount Kit
How to Use the Instrument
54
OPERATION
4. Repeatedly press the Voltage knob
until the last digit is highlighted.
This will allow the voltage to be
edited in 0.01 volt steps.
5. Turn the Voltage knob till 0.05
volts is shown.
Voltage
Voltage
V
A
→
V
A
6. Repeatedly press the Voltage knob until the
first digit is highlighted. This will allow the
voltage to be edited in 1 volt steps.
7. Turn the Voltage knob until 10.05 is shown.
V
A
→
V
A
Note
Notice the Set key becomes illuminated when
setting the current or voltage.
If the Voltage or Current knobs are unresponsive,
press the Set key first.
55
2260B Series User Manual
Background
The F-88 configuration setting allows the 2260B
to be reset back to the factory default settings.
See page 173 for the default factory settings.
Steps
8. Press the Function key. The
Function key will light up.
9. The display should show F-
01 on the top and the
configuration setting for
F-01 on the bottom.
10. Rotate the Voltage knob to change
the F setting to F-88 (Factory Set
Value).
Voltage
11. Use the Current knob to set the
F-88 setting to 1 (Return to factory
settings).
Currnet
12. Press the Voltage knob to confirm.
ConF will be displayed when
successful.
Voltage
13. Press the Function key again to
exit. The function key light will
turn off.
Reset to Factory Default Settings
56
OPERATION
Background
The F-89 configuration setting allows you to
view the 2260B version number, build date,
keyboard version, analog-control version and
kernel build.
Steps
14. Press the Function key. The
Function key will light up.
15. The display should show F-
01 on the top and the
configuration setting for
F-01 on the bottom.
16. Rotate the Voltage knob to change
the F setting to F-89 (Show
Version).
Voltage
17. Rotate the Current knob to view
the version and build date for the
various items.
Current
View System Version and Build Date
57
2260B Series User Manual
F-89
0-XX: Main Program Version
1-XX: Main Program Version
2-XX: Main Program Build On-Year.
3-XX: Main Program Build On-Year.
4-XX: Main Program Build On-Month.
5-XX: Main Program Build On-Day.
6-XX: Keyboard CPLD version.
7-XX: Keyboard CPLD version.
8-XX: Analog CPLD version.
9-XX: Analog CPLD version.
A-XX: Reserved.
B-XX: Reserved.
C-XX: Kernel Build On-Year.
D-XX: Kernel Build On-Year.
E -XX: Kernel Build On-Month.
F-XX: Kernel Build On-Day.
18. Press the Function key again to
exit. The function key light will
turn off.
Example
Main Program Version: Vt1.50, 2014/08-03
0-t1: Main Program Version
1-50: Main Program Version
2-20: Main Program Build On-Year.
3-14: Main Program Build On-Year.
4-08: Main Program Build On-Month.
5-03: Main Program Build On-Day.
Example
Keyboard CPLD Version: 0x030c
6-03: Keyboard CPLD Version.
7-0c: Keyboard CPLD Version.
Example
Analog CPLD Version: 0x0427
8-04: Analog CPLD Version.
9-27: Analog CPLD Version.
58
OPERATION
Example
Kernel Version: 2013/03/22
C-20: Kernel Build On-Year.
D-13: Kernel Build On-Year.
E-03: Kernel Build On-Month.
F-22: Kernel Build On-Day.
59
2260B Series User Manual
Background
For most models the OVP level has a selectable
range of approximately* 10% to 110% of the
rated output voltage. Likewise the OCP level
for most models has a selectable range of
approximately* 10%~ 110% of the rated output
current. The OVP and OCP level is set to the
maximum by default. The OCP level can also be
turned off.
*Note that the actual setting range differs for
each model.
When one of the protection measures are on,
ALM is shown on the panel display. By default,
the power switch will turn off when any of the
protection levels are tripped.
Basic Operation
This section describes the basic operations required to operate the
power supply.
Setting OVP/OCP → from page 60
CV mode → from page 63
CC mode → from page 66
Display modes → page 69
Panel lock → page 70
Remote sensing → from page 71
Before operating the power supply, please see the Getting Started
chapter, page 9.
Setting OVP/OCP Levels
60
OPERATION
ALM
V
A
Before setting the OVP or OCP level:
Ensure the load is not connected.
Ensure the output is set to off.
Setting Ranges
2260B (360W)
30-36
80-13
250-4
800-1
OVP Range (V)
3-33
8-88
20-275
20-880
OCP Range (A)
3.6-39.6
1.35-14.85
0.45-4.95
0.144-1.584
2260B (720W)
30-72
80-27
250-9
800-2
OVP Range (V)
3-33
8-88
20-275
20-880
OCP Range (A)
5-79.2
2.7-29.7
0.9-9.9
0.288-3.168
2260B (1080W)
30-108
80-40
250-13
800-4
OVP Range (V)
3-33
8-88
20-275
20-880
OCP Range (A)
5-118.8
4.05-44.55
1.35-14.85
0.432-4.752
Steps
1. Press the OVP/OCP key. The
OVP/OCP key lights up.
2. The OVP setting will be displayed on the top
and the OCP setting (or OFF) will be displayed
on the bottom.
V
A
OVP Setting
OCP Setting
61
2260B Series User Manual
OVP Level
3. Use the Voltage knob to set the
OVP level.
Voltage
OCP Level
4. Use the Current knob to set the
OCP level.
Current
5. Press OVP/OCP again to exit. The
OVP/OCP indicator will turn off.
Power switch trip
Set F-95 (Power switch trip) to 1 (to
disable the power switch trip) or to
0 (to enable the power switch trip)
and save.
Page 120
F-95
1 (Disable) or 0 (Enable)
Clear OVP/OCP
protection
The OVP or OCP protection can be
cleared after it has been tripped by
holding the OVP/OCP button for 2
seconds.
(Only applicable when the power
switch trip setting is disabled
[F-95 = 1])
(hold)
62
OPERATION
Background
Before setting the power supply to CV mode,
ensure:
The output is off.
The load is connected.
Steps
1. Press the Function key. The
Function key will light up.
2. The display should show F-
01 on the top and the
configuration setting for
F-01 on the bottom.
3. Rotate the Voltage knob to change
the F setting to F-03 (V-I Mode
Slew Rate Select).
Voltage
4. Use the Current knob to set the F-
03 setting.
Set F-03 to 0 (CV High Speed
Priority) or 2 (CV Slew Rate
Priority).
Current
F-03
0 = CV High Speed Priority
2 = CV Slew Rate Priority
Set to CV Mode
When setting the power supply to constant voltage mode, a current
limit must also be set to determine the crossover point. When the
current exceeds the crossover point, the mode switches to CC mode.
For details about CV operation, see page 25. CC and CV mode have
two selectable slew rates: High Speed Priority and Slew Rate
Priority. High Speed Priority will use the fastest slew rate for the
instrument while Slew Rate Priority will use a user-configured slew
rate.
63
2260B Series User Manual
5. Press the Voltage knob to save the
configuration setting. ConF will be
displayed when successful.
Voltage
6. If CV Slew Rate Priority was chosen as the
operating mode in steps 3~5, set F-04 (Rising
Voltage Slew Rate) and F-05 (Falling Voltage
Slew Rate) and save.
F-04 / F-05
0.1V/s~60V/s (2260B-30-XX)
0.1V/s~160V/s (2260B-80-XX)
0.1V/s~500.0V/s (2260B-250-XX)
1V/s~1600V/s (2260B-800-XX)
7. Press the Function key again to exit
the configuration settings. The
function key light will turn off.
8. Use the Current knob to set the
current limit (crossover point).
Push in the knob to highlight a
digit. Turn the knob to the desired
digit to adjust. Rotate the knob to
the desired current.
Current
9. Use the Voltage knob to set the
voltage.
Push in the knob to highlight a
digit. Turn the knob to the desired
digit to adjust. Rotate the knob to
the desired voltage.
Voltage
64
OPERATION
Note
Notice the Set key becomes illuminated when
setting the current or voltage. If the Voltage or
Current knobs are unresponsive, press the Set key
first.
10. Press the Output key. The Output
key becomes illuminated.
C V
% W
V
A
CV and the Power Bar
will become illuminated
(top left & center)
20 40 60 80 100 % W
Note
Only the voltage level can be altered when the
output is on. The current level can only be changed
by pressing the Set key.
For more information on the Normal Function
Settings (F-00 ~ F-61, F-88~F-89) see page 108.
65
2260B Series User Manual
Background
Before setting the power supply to
CC mode, ensure:
The output is off.
The load is connected.
Steps
1. Press the Function key. The
Function key will light up.
2. The display should show F-
01 on the top and the
configuration setting for
F-01 on the bottom.
3. Rotate the Voltage knob to change
the F setting to F-03 (V-I Mode
Slew Rate Select).
Voltage
4. Use the Current knob to set the F-
03 setting.
Set F-03 to 1 (CC High Speed
Priority) or 3 (CC Slew Rate
Priority) and save.
Current
F-03
1 = CC High Speed Priority
3 = CC Slew Rate Priority
Set to CC Mode
When setting the power supply to constant current mode, a voltage
limit must also be set to determine the crossover point. When the
voltage exceeds the crossover point, the mode switches to CV mode.
For details about CC operation, see page 25. CC and CV mode have
two selectable slew rates: High Speed Priority and Slew Rate
Priority. High Speed Priority will use the fastest slew rate for the
instrument while Slew Rate Priority will use a user-configured slew
rate.
66
OPERATION
5. Press the Voltage knob to save the
configuration setting. ConF will be
displayed when successful.
Voltage
6. If CC Slew Rate Priority was chosen as the
operating mode, set F-06 (Rising Current Slew
Rate) and F-07 (Falling Current Slew Rate) and
save.
F-06 / F-07
0.01A/s~72.00A/s (2260B-30-36)
0.1A/s~144.0A/s (2260B-30-72)
0.1A/s~216.0A/s (2260B-30-108)
0.01A/s~27.00A/s (2260B-80-13)
0.01A/s~54.00A/s (2260B-80-27)
0.01A/s~81.00A/s (2260B-80-40)
0.001A/s~9.000A/s (2260B-250-4)
0.01A/s~18.00A/s (2260B-250-9)
0.01A/s~27.00A/s (2260B-250-13)
0.001A/s~2.880A/s (2260B-800-1)
0.001A/s~5.760A/s (2260B-800-2)
0.001A/s~8.640A/s (2260B-800-4)
7. Press the Function key again to exit
the configuration settings. The
function key light will turn off.
8. Use the Voltage knob to set the
voltage limit (crossover point).
Push in the knob to highlight a
digit. Turn the knob to the desired
digit to adjust. Rotate the knob to
the desired voltage.
Voltage
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2260B Series User Manual
9. Use the Current knob to set the
current.
Push in the knob to highlight a
digit. Turn the knob to the desired
digit to adjust. Rotate the knob to
the desired current.
Current
Note
Notice the Set key becomes illuminated when
setting the current or voltage. If the Voltage or
Current knobs are unresponsive, press the Set key
first.
10. Press the Output key. The Output
key becomes illuminated.
% W
V
A
C C
% W
20 40 60 80 100
CC and the Power Bar
will become illuminated
(bottom left & center)
Note
Only the current level can be altered when the
output is on. The voltage level can only be changed
by pressing the Set key.
For more information on the Normal Function
Settings (F-00 ~ F-61, F-88~F-89) see page 108.
68
OPERATION
Steps
11. Press the PWR/DSPL key. The
PWR DSPL key lights up.
12. The display changes to voltage and power
(V/W).
13. To switch between displaying A/W and V/W,
simply press the corresponding Voltage or
Current knob.
For example: when in A/W mode, press the
Voltage knob to display V/W. Conversely
when in V/W mode, press the Current knob to
display A/W.
Voltage
Current
When V/W is displayed, the Voltage knob can
still be used to change the voltage level.
When A/W is displayed, the Current knob can
still be used to change the current level.
Exit
Press the PWR/DSPL key again to
return to normal display mode.
The PWR DSPL light will turn off.
V
W W A
Display Modes
The 2260B power supplies allow you to view the output in three
different modes: voltage and current, voltage and power or current
and power.
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2260B Series User Manual
Activate the panel
lock
Press the Lock/Local key to active
the panel lock. The key will
become illuminated.
Disable the panel
lock
Hold the Lock/Local key for ~3
seconds to disable the panel lock.
The Lock/Local light turns off.
Panel Lock
The panel lock feature prevents settings from being changed
accidentally. When activated, the Lock/Local key will become
illuminated and all keys and knobs except the Lock/Local key and
Output key (if active) will be disabled.
If the instrument is remotely controlled via the USB/LAN interface,
the panel lock is automatically enabled.
70
OPERATION
WARNING
Ensure the output is off before connecting any
sense cables.
Use sense cables with a voltage rating exceeding
the isolation voltage of the power supply.
Never connect sensing cables when the output is
on. Electric shock or damage to the power supply
could result.
Note
Be sure to remove the Sense joining plates so the
units are not using local sensing.
Single Load
1. Connect the Sense+ terminal to the positive
potential of the load. Connect the Senseterminal to the negative potential of the load.
Output
Sense
Sense
2260B
Output
Load
Input
Input
Page 45
Remote Sense
Remote sense is used to compensate for the voltage drop seen
across load cables due to the resistance inherent in the load cables.
The remote sense terminals are connected to the load terminals to
determine the voltage drop across the load cables.
Remote sense can compensate up to 0.6 volts for 30V/80V models
and 1V for 250V/800V models (compensation voltage). Load cables
should be chosen with a voltage drop less than the compensation
voltage.
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2260B Series User Manual
2. Operate the instrument as normal.
See the Basic Operation chapter for
details.
Page 60
Parallel 2260B
Units
1. Connect the Sense+ terminals to the positive
potential of the load. Connect the Senseterminals to the negative potential of the load.
Output
Sense
Sense
2260B #2
Output
Output
Sense
Sense
2260B #1
Output
Load
Input
Input
Page 45
2. Operate the instrument as normal.
See the Parallel Operation chapter
for details.
Page 76
72
OPERATION
Serial 2260B
Units
1. a. Connect the 1
st
Sense+ terminal to the
positive potential of the load.
b. Connect the 1st Sense- terminal to the
positive output terminal of the second 2260B
unit.
c. Connect the 2nd Sense+ terminal to the
positive terminal of the second 2260B unit.
d. Connect the 2nd Sense- terminal to negative
terminal of the load.
2260B #2
a
b
c
d
Load
Input
Input
Output
Sense
Sense
2260B #1
Output
Output
Sense
Sense
Output
Page 45
2. Operate the instrument as normal.
See the Serial Operation chapter
for details.
Page 84
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2260B Series User Manual
Wire Shielding
and Load line
impedance
To help to minimize the oscillation due to the
inductance and capacitance of the load cables,
use an electrolytic capacitor in parallel with the
load terminals.
To minimize the effect of load line impedance
use twisted wire pairing.
2260B
Load
s
s
Twisted pair
Capacitor
74
OPERATION
CAUTION
250V and 800V models do not support series
operation!
Parallel / Series Operation
This section describes the basic operations required to operate the
power supply in series or parallel. Operating the 2260B power
supplies in parallel increases the total power output of the power
supply units. When used in series, the total output voltage of the
power supplies can be increased.
The number of the power supplies that can be connected in series
or parallel depends on the model and the mode:
Series Mode: 2 units maximum; 30V and 80V models only.
Parallel Mode: 3 units maximum
To use the power supplies in series or parallel, units must be used
in a Master-Slave configuration. In the master-slave configuration a
“master” power supply controls any other connected “slave”
power supplies.
Master-Slave Parallel overview → from page 76
Parallel connection → from page 79
Parallel operation → from page 81
Master-Slave Series overview → page 84
Series connection → page 86
Series operation → from page 88
Before operating the power supply, please see the Getting Started
chapter, page 9.
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2260B Series User Manual
Background
When connecting the 2260B power supplies in
parallel, up to 3 units can be used in parallel
and all units must be of the same model.
When the units are used in parallel, a number
of precautions and limitations apply. Please
read this overview before operating the power
supplies in parallel.
Master
Load
Ext-V
Ext-R
Slave
VMON
IMON
Slave
Limitations
Display
Only the master unit will display the voltage
and current.
Master-Slave Parallel Overview
76
OPERATION
OVP/ OCP
The master unit can shut down slave units
when OVP/OCP is tripped on the master unit
(if the slave connector is wired for shut down
on alarm).
OVP/OCP can be independently tripped on
each slave unit, however the shutdown of the
power or output of the unit is disabled. Only
the alarm will be enabled.
Remote monitoring
Voltage monitoring (VMON) and current
monitoring (IMON) are only supported on the
master unit.
The IMON current represents the total current
of the all the parallelized units.
Remote Sense
Please see the remote sense chapter for details,
page 71.
External Voltage and Resistance Control
Voltage/Resistance controlled remote control
can only be used with the master unit.
Slew Rate
Only the master unit’s current or voltage slew
rate settings apply.
The settable current slew rate is double or triple
that of a single unit, depending on the number
of units that are used in parallel.
For example:
The 2260B-30-36 has a maximum settable
current slew rate of 72A/S. When two 2260-3036 units are used in parallel, the maximum
settable slew rate setting is 144A/S.
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2260B Series User Manual
Internal Resistance
Only the master unit’s internal resistance
settings apply.
For 2 units in parallel, the internal resistance is
actually half of the setting value.
For 3 units in parallel, the internal resistance is
actually a third of the setting value.
Bleeder Control
The Master unit is used to control the bleeder
settings. The bleeder resistors in all the slave
units are always turned off when in parallel
mode.
Output Voltage/
Output Current
Model
Single unit
2 units
3 units
2260B-30-36
30V
36A
30V
72A
30V
108A
2260B-80-13
80V
13.5A
80V
27A
80V
40.5A
2260B-250-4
250V
250V
250V
4.5A
9A
13.5A
2260B-800-1
800V
800V
800V
1.44A
2.88A
4.32A
2260B-30-72
30V
30V
30V
72A
144A
216A
2260B-80-27
80V
80V
80V 27A
54A
81A
2260B-250-9
250V
250V
250V
9A
18A
27A 2260B-800-2
800V
800V
800V
2.88A
5.76A
8.64A
2260B-30-108
30V
30V
30V 108A
216A
324A
2260B-80-40
80V
80V
80V 40.5A
81A
121.5A
2260B-250-13
250V
250V
250V
13.5A
27A
40.5A
2260B-800-4
800V
800V
800V
4.32A
8.64A
12.96A
78
OPERATION
Master-Slave
Connector
The Analog Control Connector is used for both
serial and parallel connections. The way the
connector is configured determines the
behavior of the master and slave units. For the
complete connector pin assignment, see page
123.
Analog Connector
Connection
To operate the power supplies in parallel,
connect the analog connectors on the master
and slave units as shown in the diagrams
below.
Alternatively pre-configured cables (optional)
can be used. The 2260B-006 is used for two
units in parallel. The 2260B-007 is used for 3
units in parallel.
Master with 2 slave units:
121314
15172021
24 20 12
17 15 3 17 15
312
24 20
11 1
2
1
OUTPUT ON STATUS21
Master unit
ALM STATUS20
STATUS COM17
FEEDBACK15
CURRENT_SUM_113
SHUTDOWN12
OUT ON/OFF CONT24
Slave Unit 1
12 SHUTDOWN
20 ALM STATUS
15 FEEDBACK
3 C URRENT SUM OUT
Slave Unit 2
OUT ON/OFF CONT24
12 SHUTDOWN
17 STATUS COM 17 STATUS COM
2 D COM
15 FEEDBACK
CURRENT_SUM_2 CURRENT SUM OUT314
20 ALM STATUS
11 1 1I MON CURRENT SHARE CURRENT SHARE
16 16 16
A COM16 16 A COM 16 A COM
Master-Slave Parallel Connection
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2260B Series User Manual
Master with 1 slave unit:
2
12
1315172021
24 20 12
17 15 3
23
OUTPUT ON STATUS21
Master unit
ALM STATUS20
STATUS COM17
FEEDBACK15
CURRENT_SUM_113
SHUTDOWN12
OUT ON/OFF CONT24
Slave Unit 1
12 SHUTDOWN
20 ALM STATUS
15 FEE DBACK
3 CURRENT SUM OUT
17 ST ATUS COM
2 D COM
11 1I MON CURRENT SHARE
11 1
16 16A COM A COM
16
16
Parallel Output
Connection
-
+
Load
Master
unit
Slave
unit 2
Slave
unit 1
Steps
1. Ensure the power is off on all power supplies.
2. Choose a master and a slave unit(s).
3. Connect the analog connectors for the master
and slave unit as shown above.
4. Remove the Output Terminal
covers and the protection dummy
plug from the analog control
connector.
Page 47
80
OPERATION
5. Connect the master and slave unit in parallel as
shown above.
6. Reattach the terminal covers.
Page 47
Note
Ensure the load cables have sufficient
current capacity.
Page 44
Re-attach the Protection dummy plug when not in
use.
Master-Slave
Configuration
Before using the power supplies in parallel, the
master and slave units need to be configured.
Steps
1. Configure the OVP and OCP
settings for the master unit.
Page 60
2. For each unit, hold the Function
key while turning the power on to
enter the power on configuration
settings.
3. Configure F-93 (Master/Slave)
setting for each master/slave unit.
Page 120
Unit
F-93
Master (with 1 slave in parallel)
1
Master (with 2 slaves in parallel)
2
Slave unit (parallel slave)
3
4. Cycle the power on the units (reset the power).
Master-Slave Parallel Operation
81
2260B Series User Manual
Note
Configuration settings can be checked for both the
master and slave units by pressing the Function
key and checking F-93.
Only the Master OVP and OCP level is used for
over voltage and current protection. Slave OVP and
OCP level is disregarded.
OTP works independently for each unit.
Master-Slave
Operation
Only operate the power supplies in parallel if
the units are configured correctly.
1. Turn on the master and slave units. The slave
unit(s) will show a blank display.
Master unit
Slave units
2. Operation of all units is controlled
via the master unit. Operation of
the master unit is the same as for a
single unit. See the Basic Operation
chapter.
Page 60.
3. Press the Output key to begin.
Caution
Only operate the power supplies in parallel if using
units of the same model number.
Only a maximum of 3 units can be used in parallel.
82
OPERATION
Note
The panel controls are disabled on slave units,
including the output key. On slave units only the
Function key can be used to view the current
settings.
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2260B Series User Manual
Background
When connecting 2260B power supplies in
series, up to 2 units can be used in series and
all units must be of the same model.
When the units are used in series, a number of
precautions and limitations apply. Please read
this overview before operating the power
supplies in series.
Master
Load
Ext-V
Ext-R
Slave
VMON
IMON
Limitations
Display
Only the master unit will display the current.
Master and slave units display the voltage. The
total voltage is the sum of the units.
OVP/OCP
The master unit can shut down the slave unit
when OVP/OCP is tripped on the master unit
(if the slave connector is wired for shut down
on alarm).
OVP and OCP level is determined by the
master OVP and OCP level. The OVP and OCP
level on the slave unit is ignored.
Master-Slave Series Overview
84
OPERATION
Remote monitoring
Voltage monitoring (VMON) and current
monitoring (IMON) are only supported on the
master unit.
The VMON voltage represents the total voltage
of the all the serialized units.
Remote Sense
Please see the remote sense chapter for details,
page 71.
External Voltage and Resistance Control
Voltage/Resistance controlled remote control
can only be used with the master unit.
Slew Rate
The voltage slew rate is actually double that of
the setting slew rate. I.e., A voltage slew rate
setting of 60.00V/s is actually 120V/s when in
series.
Internal Resistance
The internal resistance is actually twice that of
the setting value.
Only the master unit’s internal resistance
settings apply.
Bleeder Control
The Master unit is used to control the bleeder
settings. The bleeder resistor is always turned
on for the slave unit in series mode.
85
2260B Series User Manual
Output Voltage/
Output Current
Model
Single unit
2 units
2260B-30-36
30V
60V
36A
36A 2260B-80-13
80V
160V
13.5A
13.5A
2260B-30-72
30V
60V
72A
72A
2260B-80-27
80V
160V
27A
27A
2260B-30-108
30V
60V
108A
108A
2260B-80-40
80V
160V
40.5A
40.5A
Master-Slave
Connector
The Analog Control Connector is used for both
serial and parallel connections. The way the
connector is configured determines the
behavior of the master and slave units. For the
connector pin assignment, see page 123.
Analog Connector
Connection
To operate the power supplies in series, connect
the analog connectors on the master and slave
unit as shown in the diagram below.
Alternatively, the optional 2260B-005 cable is
pre-configured for serial use.
Master-Slave Series Connection
86
OPERATION
2
12
172021
Master unit
A COM16
OUTPUT ON STATUS21
ALM STATUS20
STATUS COM17
SHUTDOWN12
Slave Unit 1
25 SER SLV IN
20 ALM STATUS
12 SHUTDOWN
2 D COM
24 OUT OFF/ON CONT
2 D COM
24 20 12
17
25
2
16
17 STATUS COM
Series Output
Connection
Master unit
Load
+
Slave unit
Steps
1. Ensure the power is off on both power supplies.
2. Choose a master and slave unit.
3. Connect the analog connectors for the master
and slave unit as shown above.
4. Remove the output terminal cover
and the protection dummy plug
from the analog control connector.
Page 47
5. Connect the master and slave unit in series as
shown above.
6. Reattach the terminal cover.
Page 47
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2260B Series User Manual
Note
Ensure load cables have sufficient
current capacity.
Page 44
Re-attach the protection dummy plug when not in
use.
Master-Slave
Configuration
Before using the power supplies in series, the
master and slave units need to be configured.
1. Configure the OVP and OCP
settings for the master unit.
Page 60
2. For each unit, hold the Function
key while turning the power on to
enter the power on configuration
settings.
3. Configure F-93 (Master/Slave)
setting for each master/slave unit.
Page 120
Unit
F-93
Master (local or series operation)
0
Slave unit (series)
4
4. Cycle the power on the units (reset the power).
Note
Configuration settings can be checked for both the
master and slave units by pressing the Function
key.
Master-Slave Series Operation
88
OPERATION
Master-Slave
Operation
Only operate the power supplies in series if the
units are configured correctly.
1. Turn on the master and slave unit. The slave
unit will only show the voltage of its own unit.
The master unit will show the combined
voltage of both units and the current.
Master unit
Slave unit
V
A
V
2. Operation of all units is controlled
via the master unit. Operation of
the master unit is the same as for a
single unit. Please see the basic
operation chapter for details.
Page 60
3. Press the Output key to begin.
CAUTION
Only operate the power supplies in series if using
units of the same model number. 250V and 800V
models do not support series operation!
Only a maximum of 2 units can be used in series.
Note
The panel controls are disabled on slave units,
including the output key.
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2260B Series User Manual
Test Sequence
This section describes how to use the Utility function to run, load
and save test sequences for automated testing. The Utility function
is useful if you want to perform a number of tests automatically.
The 2260B utility function can store ten test sequences in memory.
Test Sequence File Format→ from page 91
Test Sequence Settings → from page 91
Setting the Test Sequence Settings → from page 95
Load Test Sequence → from page 96
Run Test Sequence → from page 97
Run Test Sequence → from page 97
Export Test Sequence → from page 98
Remove Test Sequence → from page 99
Test Sequence Error Codes → from page 100
90
OPERATION
A test sequence file describes a sequence of steps that are output
when the test sequence is run. The test sequence file is created on a
PC in a *.CSV (comma separated values) format. In a CSV file each
field is delimited by a comma.
Each file should be saved as tXXX.csv, where XXX is the save file
number 001~010. The save file number is important as it designates
which memory slot the test file can be loaded into, see page 96.
Below is an example of a simple test file created in a spreadsheet.
Cycle Step
Start
Cycle Step
End
Cycle
Repeat
Step
number
Time(sec) Voltage (V) Current (A)
Cycle
Header
Step
Header
Time(sec)
Header
Voltage (V)
Header
Current (A)
Header
A test file contains the following fields in the following order:
Line 1:
Cycle Header: This field contains the “Cycle” header text.
Required. Do not remove or alter from this location.
Cycle Repeat: Determines the number of times to repeat a
sequence of steps. It has a range of 1~999 or 0|INF. A setting of 1
will pass through the cycle once. A setting of 0 or INF (case
insensitive) will repeat the cycle infinitely.
Test Sequence File Format
91
2260B Series User Manual
Cycle Step Start: Determines the starting step for the Cycle
Repeat field. Range: 1~999. The Cycle Step Start field must be less
than the Cycle Step End field.
Cycle Step End: Determines the ending step for the Cycle Repeat
field. Range: 2~1000. The Cycle Step End field must be greater
than the Cycle Step Start field.
Line 2:
Step Header: This field contains the “Step” header text. Required.
Do not remove from this location.
Time(sec) Header: This field contains the “Time(sec)” header text.
Required. Do not remove or alter from this location.
Voltage (V) Header: This field contains the “Voltage (V)” header
text. Required. Do not remove or alter from this location.
Current (A) Header: This field contains the “Current (A)” header
text. Required. Do not remove or alter from this location.
Line 3+:
Step Number: The Step Number field numbers each step in the
test function. It has a range of 1~1000. All steps must be
numbered in numerical order. No step number can be “skipped”
between the first and last step.
Time(sec): Designates the duration time of the corresponding
step in seconds. It has a range of 0.05 seconds to 20 days. It has a
step resolution of 0.05 seconds (50ms). A setting of 0 will skip the
step.
Voltage (V): Designates the voltage of the corresponding steps in
volts. MIN or MAX can be used to set the voltage to minimum or
maximum, respectively.
Current (A): Designates the current of the corresponding steps in
amps. MIN or MAX can be used to set the current to minimum or
maximum, respectively.
92
OPERATION
Example:
File: T001.csv
In the example below there are 10 steps in total.
As designated by the Cycle fields, steps 3~5 are
repeated twice.
In total the steps will run as follows:
Steps 3~5 are repeated twice
Step: 1>2>3>4>5>3>4>5>6>7>8>9>10
Cycle,2,3,5
Step,Time(sec),Voltage (V),Current (A)
1,1,MIN,MIN
2,1,0.05,0.05
3,1,0.1,0.1
4,1,0.15,0.15
5,1,0.2,0.2
6,1,0.25,0.25
7,1,0.3,0.3
8,1,0.35,0.35
9,1,0.4,0.4
10,1,0.45,0.45
93
2260B Series User Manual
Test sequence
Run
Runs the chosen test sequence from the internal
memory. A test sequence must first be loaded
into the internal memory before it can be run.
See the Utility function “Test Sequence Load”,
below.
The test sequence will run as soon as the utility
function is started.
T-01
1~10
Test sequence
Load
Loads a test sequence from the USB drive to the
designated save slot in memory. A test
sequence must first be loaded into internal
memory before it can be run.
T-02
1~10 (USB2260B)
Test Export
Exports a test sequence from the designated
memory save slot to the USB drive.
T-03
1~10 (2260BUSB)
Test sequence
Remove
Deletes the chosen test sequence file from the
2260B internal memory.
T-04
1~10
Test Sequence Settings
94
OPERATION
Steps
The test sequence settings (T-01~T-04) are set
with the Utility key.
1. Press the Utility key. The Utility
key will light up.
2. The display will show T-01 on the top and the
memory no. for T-01 on the bottom.
Test Sequence
Setting
Memory
number
3. Rotate the voltage knob to select
below items.
Voltage
Test sequence Run
Test sequence Load
Test sequence Export
Test sequence Remove
T-01
T-02
T-03
T-04
4. Rotate the current knob to choose a
memory slot number.
Current
Range
1~10
5. Press the Voltage knob to complete
the setting.
Voltage
Setting the Test Sequence Settings
95
2260B Series User Manual
Exit
Press the Utility key again to exit
the Test sequence settings. The
Utility key light will turn off.
Overview
Before a test sequence can be run, it must first
be loaded into a one of the 10 memory save
slots. Before loading a test sequence into
memory:
Ensure the test sequence file is placed in the root
directory.
Ensure the file name number corresponds to the
memory number that you wish to save to.
For example: A test sequence file named
t001.csv can only be saved to memory
number 01, t002.csv can only be saved to
memory number 02, and so on.
Steps
1. Insert a USB flash drive into the
front panel USB-A slot. Ensure the
flash drive contains a test sequence
file in the root directory.
2. Turn on the power. MS (Mass Storage) will be
displayed on the screen after a few seconds if
the USB drive is recognized.
Load Test Sequence from USB
96
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