GW-INSTEK PSB-2800L User guide
Multi-Range DC Power Supply
PSB-2000 series
User Manual
GW INSTEK PART NO. 82SB-28H00EB1
ISO-9001 CERTIFIED MANUFACTURER
Copyright Statement
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 of Good Will company.
The information in this manual was correct at the time of printing.
However, Good Will continues to improve products and reserves the
rights to change specification, equipment, and maintenance
procedures at any time without notice.
Good Will Instrument Co., Ltd.
No. 7-1, Jhongsing Rd., Tucheng Dist., New Taipei City 236, Taiwan.
Table of Contents
Table of Contents
SAFETY INSTRUCTIONS .................................................. 3
GETTING STARTED .......................................................... 7
PSB 2000 Series Overview ................................ 8
Appearance .................................................... 15
OPERATION .................................................................. 32
Connecting the AC Power Cable ...................... 32
Connecting the Load to the Output Terminals 32
Operation Ranges (PSB-2400L, 2800L, 2400L2,
2800LS) .......................................................... 41
Operation Ranges (PSB-2400H, 2800H) ......... 42
Various Settings ............................................. 43
Menu Key Functions ....................................... 50
Voltage Sense ................................................. 74
External Control Functions ............................. 76
Using the Sequence Function ......................... 86
OTHER FUNCTIONS ...................................................... 89
Display in Alarm Status .................................. 89
Frame Link Controlled Parallel Operation
(excluding PSB-2400L2) .................................. 91
Frame Link Controlled Series Operation
(excluding PSB-2400L2, PSB-H series) ........... 93
Power Extension using PSB-2800LS (Parallel
Connection Only) ........................................... 94
Using the PSB-007 Extension kits ................... 95
EXTERNAL CONTROL .................................................... 99
Remote Control .............................................. 99
Interface Connectors .................................... 100
1
PSB-2000 Series User Manual
PSB-001 Specifications (optional) ................ 100
PSB-002 Specifications (standard) ................ 101
Connection Methods .................................... 102
Connection Cables ........................................ 104
Address Setting ............................................ 105
Using the Interface Boards ........................... 108
Communication Commands ......................... 111
Registers ...................................................... 133
APPENDIX .................................................................... 143
Trouble Shooting .......................................... 143
Maintenance ................................................. 145
Dimensions .................................................. 147
PSB-2000L Series Specifications ................... 150
PSB-2000H Series Specifications .................. 158
EC Declaration of Conformity ....................... 163
2
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 PSB or to other
properties.
DANGER High Voltage
Attention Refer to the Manual
Protective Conductor Terminal
Earth (ground) Terminal
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.
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 symbols may appear in the manual or on the instrument.
3
PSB-2000 Series User Manual
General
Guideline
CAUTION
Do not place any heavy object on the unit.
Avoid severe impact or rough handling that
leads to damaging the unit.
Do not discharge static electricity to the unit.
Do not block the cooling fan opening.
Do not perform measurements on circuits that
are directly connected to mains power.
Do not disassemble the PSB unless you are
qualified.
(Measurement categories) EN 61010-1:2010 specifies the
measurement categories and their requirements as follows. The
PSB-2000 doesn’t fall under category II, III or IV.
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.
O is for measurements performed on circuits not directly
connected to Mains.
Power Supply
WARNING
AC Input voltage range: 100Vac to 240Vac,
1300VA Max
Frequency: 50Hz/60Hz
To avoid electrical shock connect the protective
grounding conductor of the AC power cord to
an earth ground.
Safety Guidelines
4
SAFETY INSTRUCTIONS
Cleaning the
power supply
Disconnect the power cord before cleaning the
oscilloscope.
Use a soft cloth dampened in a solution of mild
detergent and water. Do not spray any liquid
into the oscilloscope.
Do not use chemicals containing harsh products
such as benzene, toluene, xylene, and acetone.
Operation
Environment
Location: Indoor, no direct sunlight, dust free,
almost non-conductive pollution (Note below)
Relative Humidity: 30% to 80% (no dew or
condensation)
Altitude: < 2000m
Temperature: 0°C to 40°C
(Pollution Degree) EN 61010-1:2010 specifies pollution degrees
and their requirements as follows. The PSB 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
Location: Indoor
Relative Humidity: 30% to 70% (no dew or
conensation)
Temperature: -20°C to 70°C
5
PSB-2000 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.
6
GETTING STARTED
GETTING STARTED
The PSB series are variable output, highperformance, regulated, switching DC power
supplies. They incorporate a high-frequency
current suppression circuit and accept input
voltages rated from AC100V to 240V without the
need to switch inputs. The offer a wide voltage
and current range within their maximum rated
power envelope. They also have a variable
constant power function. They have standard
features such as voltage and current settings, an
output on/off switch, monitor outputs and other
functions via external connectors. The chasis is
smaller overall than traditional power supplies to
reduce the total work area. The dual channel
model and the booster unit extend the series to
cover a wider range of applications. The PSB series
are also able to execute sequence programs that
are written using the optional interface boards.
The optional interface boards also allow you to
control the PSB series remotely from a PC using
GPIB, RS232C or USB.
7
PSB-2000 Series User Manual
Product name
Voltage range
Current range
Power range
PSB-2400H
0V to 800V
0A to 3A
0W to 400W
PSB-2800H
0V to 800V
0A to 6A
0W to 800W
PSB-2400L
0V to 80V
0A to 40A
10W to 400W
PSB-2800L
0V to 80V
0A to 80A
10W to 800W
PSB-2400L2 (Dual
channel type)
0V to 80V
×2CH
0A to 40A
×2CH
10W to 400W
×2CH
PSB-2800LS
(Booster unit)
0V to 80V
0A to 80A
10W to 800W
Product name
PSB-2400L
(CE)
PSB-2800L
(CE)
PSB-2400L2
(CE)
PSB-2800LS
(CE)
PSB-2400H
(Non-CE)
PSB-2800H
(Non-CE)
PSB 2000 Series Overview
Series line up
CE Mark
8
GETTING STARTED
■ 400W Type
PSB-2400L
■ 800W Type
PSB-2800L
■ 400W×2-Channel Type
PSB-2400L2
■ 800W Type
Booster unit
PSB-2800LS
■ 400W Type
PSB-2400H
■ 800W Type
PSB-2800H
9
PSB-2000 Series User Manual
Multi-Range
Output
Capable of a wide-range of voltage and current
settings within the rated power envelope.
Constant-Power
Control
Provides constant-power (CP) control in addition to
constant-voltage (CV) and constant-current (CC)
controls.
Power Factor
Correction Circuit
A built-in power factor correction circuit ensures
compatibility to a wide AC input voltage range from
AC100V to 240V without the need to use a switch. It
also suppresses harmonic current.
Rotatable Front
Panel Controls
The front panel can be rotated by 90 degrees to allow
the unit to be operated horizontally or vertically.
Output Off Timer
Function
Turns the output off automatically after a preset
amount of time has elapsed. This can be used to
prevent the output from being left on inadvertently or
to prevent over-charging.
Sequence (SEQ)
Function
The Sequence function executes data read from a PC
through one of the optional interface boards (PSB001 and PSB-002). There are two operation modes for
the sequence function: Manual mode (for step by
step execution) and automatic mode (for automatic
execution of up to 99 steps and 999 cycles).
Protective
Functions
The power supplies have a number of protection
functions. OVP, OCP and OHP. OVP and OCP
protection can be set on the front panel.
Preset Functions
(Three Settings)
Pressing a preset key directly selects a preset setting,
which is set in advance.
Main Features
10
GETTING STARTED
Single Unit
Control of
Parallel/Series
Operation
The PSB-L series uses a single power supply unit
(acting as the master unit) to control all connected
slave units for series or parallel operation. In parallel,
up to 4 units can be controlled (including the master)
to increase the total power. In series, a maximum of 2
units (including the master) can be used.
External Control
Function
The external control function allows external voltage
and restistance-based control, voltage and current
monitoring, output on/off control, alarm output and
CV/CC status output.
Interface Boards
There are two optional interface boards for remote
control.
PSB-001: GPIB and local bus board.
PSB-002: RS-232C, USB and local bus board.
Note also that one of these options must be used to
program sequences for the PSB-L series. See page 86
for further details.
Dual Channel
Model
(PSB-2400L2)
Equipped with two 400W output channels for a
wide variety of applications.
Delay (DLY)
Function:
(PSB-2400L2
Only)
The delay function introduces a switching delay
between channel 1 and 2. The delay function can set
a rising delay (the time to turn on) and a falling delay
(the time to turn off).
Tracking
Function:
(PSB-2400L2
Only)
The channel 2 setting is made equal to that of
channel 1 when the tracking function is activated.
Thereafter, both channels change synchronously.
11
PSB-2000 Series User Manual
Model Number
Description
PSB-001
GPIB Control Board. Includes GRJ-1101 modular
cables. For further details, see page 100.
PSB-002
RS-232C/USB Control Board. Includes GRJ-1101
modular cables. For further details, see page 101.
PSB-003
Parallel Connection Kit for
Horizontal Installation.
Kit includes: PSB-007 Joint
kit, Horizontal bus bar x2,
PSB-005 x1.
PSB-007 Joint Kit
Horizontal Bus Bar
PSB-005
PSB-004
Parallel Connection Kit for
Vertical Installation.
Kit includes: PSB-007 Joint
kit, Verical bus bar x2, PSB005 x1.
PSB-007 Joint Kit
Accessories
12
GETTING STARTED
Vertical Bus Bar
PSB-005
PSB-005
Parallel Connection Signal
Cable
PSB-006
Serial Connection Signal
Cable
PSB-007
Joint Kit:
Includes 4 joining plates, 4X
M3x6 screws, 2X M3x8
screws.
PSB-008
RS-232C Cable
GRJ-1101
Modular Cables: 500mm
6P6C RJ11 (local bus cables)
13
PSB-2000 Series User Manual
Model Number
Description
User Manual CD x 1
AC power cable x 1
Screws for output terminals on rear panel
Protection covers for output terminals on rear panel
Protection caps for output terminals on the front
panel
External control connector (26-pin)
GND cable
Standard Accessories
14
GETTING STARTED
2 3 4 14 15 16 17 18 19 20 21 22
POWER
CHECK
ENTER
REMOTE
FAST
LOCK
Hi -
W
V A
CV
MENU
SEQUENCE
PRESET
321
FAST/LOCK(3s)
/LOCAL
OUTPUT
OFF TIMER
DISP
ESCMENU
W
CC CP
A
W
R
O
T
A
T
E
V
W
Multi- Range DC Power Supply
DELAY
CH 2
CH 2
CH 1
DISP
CH 1
( L Type ONLY)
CH A
MAX 400W
MAX DC 80V
MAX DC 40A
CH B
PSB-2400L2
ON / OFF
1 5 6 7 8 9 10 11 12 13
Appearance
Front Panel (PSB-2400L2 shown)
15
PSB-2000 Series User Manual
1 5 6 7 8 9 10 11 12 13
2 3 4 14 15 16 17 18 19 20 21 22
POWER
CAUTION
MAX 400W
MAX DC 800V
MAX DC 3A
PSB - 2400 H
CHECK
ENTER
REMOTE
FAST
LOCK
Hi -
W
V A
CV
MENU
SEQUENCE
PRESET
321
FAST/LOCK(3s)
/LOCAL
OUTPUT
OFF TIMER
DISP
ESCMENU
W
CC CP
A
W
R
O
T
A
T
E
V
(
L Type ONLY
)
W
Regulated DC Power Supply
ON / OFF
PSB-2800LS
Multi-Range DC Power Supply
2 1
Front Panel (PSB-2400H shown)
Front Panel (PSB-2800LS)
16
GETTING STARTED
Item
Description
1
Front grill
This is a ventilation grill for for cooling the
internal circuits. It is detachable and has a dust
filter inside. Clean the filter periodically. See page
143.
2
Rubber feet
Detachable. If the unit is mounted in a rack and
the feet are not needed, they may be removed.
3
POWER
ON/OFF
switch
Depress the switch to the (I) position to turn on
the power supply unit. Press it again to turn off
the unit.
4
Front output
terminals
Output is supplied through these terminals. The
maximum current is 3A(2400H) or 6A(2800H),
40A(2400L, 2400L2), 80A(2800L, 2800LS). The
40A/80A models use screw-type terminals. The
3A/6A models use European-type jack terminals.
17
PSB-2000 Series User Manual
PSB-2400L, PSB-2800L
PSB-2400H, PSB-2800H
PSB- 2400L2
Type
Description
5
Address no.,
Step no.,
cycle no.,
Menu no.
Normal
operation
Sequence
operation
Menu
Tracking
Not
displayed.
Number of
steps or
cycles is
displayed.
Menu No. is
displayed.
“Ab” is
displayed.
6
Channel
LEDs
The LED of the selected channel is lit. Both LEDs
are lit when the tracking function is activated.
7
Current LED
(7-segment)
Normal
operation
Sequence
operation
Menu
Alarm
Current or
power is
displayed.
Step No. is
displayed.
Set item is
displayed.
OVP, OCP,
HARD or
OHP is
displayed.
The “W” LED on the right of the 7-segment LED
is lit in the power display state.
Panel Operation Unit
18
GETTING STARTED
8
Voltage LED
(7-segment)
Normal
operation
Sequence
operation
Menu
Alarm
Voltage or
power is
displayed.
Cycle No. is
displayed.
Set parameter
is displayed.
OVP, OCP,
HARD or
OHP is
displayed.
The “W” LED on the right of the 7-segment LED
is lit in the power display state.
9
Function
LEDs
These LEDs display the On/Off state of the OFF
TIMER, DELAY or HiΩ functions. The LED is lit
green when the corresponding function is
activated.
10
ESC/DISP
key (ESC /
DISP)
Changes the channel display, sequence operation
display (i.e., step No. and cycle No.), remaining
time for the off-timer and other displays. When
the menu is displayed, pressing it exits the
function selection mode and returns to the normal
mode.
11
OUTPUT key
(red)
( OUTPUT )
This key turns on or off the output. The LED is lit
when the output is turned on.
12
CH1 and
CH2 keys
(red, green,
orange)
( CH1 , CH2 )
These keys turn on or off the channel outputs. The
color of the corresponding LED indicates the
output mode.
Green: CV mode.
Red: CC mode.
Orange: CP mode.
The CH1 and CH2 keys are only available for the
PSB-2400L2 only. The PSB-2400L and PSB-2800L
have single LEDs only.
19
PSB-2000 Series User Manual
13
Rotary
encoder
Used to select the functions and change the
values.
14
V key (green)
( V )
Used for setting the voltage. Press the key and
rotate the encoder to change the set value. If the A
key is pressed while holding the V key, both LEDs
are lit and the Current LED enters the power
display mode.
15
A key (green)
( A )
Used for setting the current. Press the key and
rotate the encoder to change the set value. If the V
key is pressed while holding the A key, both LEDs
are lit and the Voltage LED enters the power
display mode.
16
PRESET 1
key (green)
(PRESET 1 )
Reads out data stored in PRESET 1. Serves as a
start/pause key ( ) in the sequence mode.
17
PRESET 2
key (green)
(PRESET 2 )
Reads out data stored in PRESET 2. Serves as a
back key ( ) to a skip to previous step number
in the sequence mode.
18
PRESET 3
key (green)
(PRESET 3 )
Reads out data stored in PRESET 3. Serves as a
forward key ( ) to skip to the next step number
in the sequence mode.
19
MENU key
(MENU )
Used for setting and selecting various functions.
20
GETTING STARTED
20
ENTER/
CHECK Key
(ENTER /
CHECK)
Alternates the operation (and display) between
the output value and the set value.
When the output is on, every press of the ENTER /
CHECK key alternates the display between the
output value and set value.
・ When the V key is lit The voltage setting is
enabled.
・ When the A key is lit The current setting is
enabled.
・ When the V and A keys are lit the power
setting is
enabled.
When the menu is displayed, press this key to
validate functions and values in the menu.
21
FAST/LOCK
(3s)/LOCAL
key(FAST )
Changes the resolution of the voltage, current or
power settings, locks panel operation, or switches
the remote mode into the local mode. The color of
the LED indicates the current status.
FAST (green): The setting resolution is 1V,
1A or 100W.
LOCK (3s) (red): Operations on the front
panel are disabled.
REMOTE (orange): Lit during communication
through the optional
interface boards.
22
ROTATE key
The operating panel of the PSB-2000 series can be
rotated 90 degrees so that the unit can be used in
the horizontal or vertical position. Hold the
encoder and rotate the panel operation unit while
holding the key.
21
PSB-2000 Series User Manual
PSB-002
LOCAL BUS
I I IUSB
J3
EXT CONT
▲
J2
△
AC INPUT
1
2 26
25
CH 2
CH 1
J1
MADE IN TAIWAN
～100V-240V
50Hz / 60Hz
650 VA MAX
MAX 400W
MAX DC 80V
MAX DC 40A
!
OUTPUT
DC
MAX 400W
MAX DC 80V
MAX DC 40A
!
OUTPUT
DC
!
23 24 25 26 27 28 29 30 31
J3
EXT CONT
▲
J2
△
AC INPUT
1
2 26
25
CH 1
J1
MADE IN TAIWAN
PSB-001
LOCAL BUS GP-IB
～100V-240V
50Hz / 60Hz
650 VA MAX
MAX 400W
MAX DC 80V
MAX DC 40A
!
OUTPUT
DC
!
23 24 25 26 27 28 29 30 31
Rear Panel (PSB-2400L2)
Rear Panel (PSB-2400L/PSB-2800L)
22
GETTING STARTED
23 24 25 26 27 28 29 30 31
PSB-002
LOCAL BUS
I I IUSB
2
1
EXT CONT
J3
26
J1 J2
AC INPUT
△
25
MADE IN TAIWAN
DC
OUTPUT
!
MAX DC 3A
MAX DC 800V
MAX 400W
+ +S
CAUTION
-S -
!
J2
△
AC INPUT
CH 1
J1
MADE IN TAIWAN
～100V-240V
50Hz / 60Hz
650 VA MAX
MAX 400W
MAX DC 80V
MAX DC 40A
!
OUTPUT
DC
!
26 27 28 29 30 31
Rear Panel (PSB-2800H)
Rear Panel (PSB-2800LS)
23
PSB-2000 Series User Manual
Description
23
Optional
Interface
board slot
The optional interface board slot is used to install
the optional PSB-001 board for the GPIB interface.
The product is supplied with the USB/RS-232C
option as standard.
24
J3 external
control
connector
The external control connector is used to control
or monitor a number of different parameters
using external components. The pin assignment
of this connector can be found on page 26(40A
models) 30(3A/6A models).
25
Sensing
terminals
The sensing terminals are used to change the
sensing point. These terminals are short-circuited
before shipment to select internal sensing.
26
Rear output
terminals
The Output of the PSB-2000 series power supply
unit is also output through these terminals. The
type of rear panel output terminal varies
depending on the model. The PSB-2400H and
PSB-2800H use pin terminals and the PSB-L
models use crimp style voltages designed to
accommodate higher current.
For the PSB-2400L2 (dual channel model), the
channel 1 terminal block is in the upper part
(CH1) and the channel 2 terminal block is in the
lower part (CH2) of the rear panel when the unit
is viewed from the back. On each terminal block,
the positive (＋) terminal is on the left and the
negative (－) terminal is on the right when the
unit is viewed from the back. Connect either
output terminal to the screw marked with the
ground signal if it needs to be grounded with
the chassis.
24
GETTING STARTED
27
J1 control
signal input
connector
This connector is used for parallel and serial
control for master/slave operation. The optional
frame link cables must be used with this
connector.
28
J2 control
signal output
connector
This connector is used for parallel and serial
control for master/slave operation. The optional
framelink cables must be used with this
connector.
29
Exhaust Grill
Air taken into the unit from the front is blown out
through this grill. Leave a gap of a least 30cm or
more behind the rear panel for good ventilation.
If there is an object obstructing the rear panel, the
temperature inside the power supply unit may
rise excessively.
30
Functional
ground
terminal
The unit can be grounded using this terminal
31
AC INPUT
Connect the AC power cable supplied with the
unit with this plug receptacle and supply AC
power to the unit.
25
PSB-2000 Series User Manual
Pin No.
Signal name
Function
1
CH2 STATUS COM
(COM for 2, 3 & 4)
COM for pins 2, 3 and 4.
2
CH2 ALARM OUT
Open collector output. When the alarm
is output for channel 2 then this pin is
pulled low.
3
CH2 EXT CC
STATUS OUT
Open collector output. Set to the low
level when channel 2 is in CC mode.
4
CH2 EXT CV
STATUS OUT
Open collector output. Set to the low
level when channel 2 is in CV mode.
5
CH2 EXT CV
CONTROL IN
Constant-voltage control input pin for
channel 2.
In the external voltage control mode, an
external voltage of 0V to 10V can be
used to control the output voltage from
0V to the rated output voltage.
In the external resistance control mode,
an external resistance of 0kΩ to 10kΩ
can be used to control the output
voltage from 0V to the rated output
voltage.
Pin assignment of the J3 External Control Connector
(PSB-2400L, 2800L, 2400L2, 2800LS)
26
GETTING STARTED
6
CH2 EXT CC
CONTROL IN
Constant-current control input pin for
channel 2.
In the external voltage control mode, an
external voltage of 0V to 10V can be
used to control the ouput current from
0A to the rated output current.
In the external resistance control mode,
an external reistance of 0kΩ to 10kΩ can
be used to control the output current
from 0A to the rated output current.
7
CH2 COM
COM pin for channel 2.
Connected to the negative output
terminal of channel 2.
8
CH2 EXT V MON
OUT
Output voltage monitor pin for channel
2.
Outputs a voltage of approximately 0V
to 10V to represent 0V to the rated
output voltage.
9
CH2 EXT A MON
OUT
Output current monitor pin for channel
2.
Outputs a voltage of approximately 0V
to 10V to represent 0A to the rated
output current.
10
CH2 COM
COM pin for channel 2. Connected with
the negative output terminal of channel
2.
11
CH2 EXT ALARM
IN
Causes the alarm state to be triggered
when short-circuited with the CH2
COM pin.
12
CH2 EXT OUTPUT
IN
This pin turns the CH2 output on when
it is shorted to the CH2 COM pin.
27
PSB-2000 Series User Manual
13
CH2 COM
COM pin for channel 2. Connected with
the negative output terminal of channel
2.
14
CH1 EXT CV
CONTROL IN
Constant-voltage control input pin for
the channel 1.
In the external voltage control mode, an
external voltage of 0V to 10V can be
used to control the output voltage from
0V to the rated output voltage.
In the external resistance control mode,
an external resistance of 0kΩ to 10kΩ
can be used to control the output
voltage from 0V to the rated output
voltage.
15
CH1 EXT CC
CONTROL IN
Constant-current control input pin for
channel 1.
In the external voltage control mode, an
external voltage of 0V to 10V can be
used to control the ouput current from
0A to the rated output current.
In the external resistance control mode,
an external reistance of 0kΩ to 10kΩ can
be used to control the output current
from 0A to the rated output current.
16
CH1 COM
COM pin for channel 1.
Connected with the negative output
terminal of channel 1.
17
CH1 EXT V MON
OUT
Output voltage monitor pin for channel
1.
Outputs approx. 0V to 10V to represent
0V to the rated output voltage.
28
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