Programmable Power Supply
PSP-603, PSP-405, PSP-2010
USER MANUAL
ISO-9001 CERTIFIED MANUFACTURER
Table of Contents
Table of Contents
SAFETY INSTRUCTIONS .................................................. 2
GETTING STARTED .......................................................... 7
Main Features ........................................ 8
Accessories ............................................ 8
PSP Series Lineup .................................. 9
Front Panel Overview ........................... 10
Display Overview ................................. 12
Rear Panel Overview ............................ 14
Set Up .................................................. 15
OPERATION .................................................................. 17
REMOTE CONTROL ....................................................... 26
Interface Configuration ........................ 28
Command Set ...................................... 35
Setting for different command format .. 52
FAQ ............................................................................... 56
APPENDIX ..................................................................... 57
Fuse Replacement ................................ 57
Fan....................................................... 58
Specification ........................................ 59
Declaration of Conformity .................... 61
INDEX ........................................................................... 62
1
PSP Series User Manual
SAFETY INSTRUCTIONS
This chapter contains important safety
instructions that you must follow when operating
a PSP series power supply and when keeping it in
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 power
supply.
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 power supply or to
other property.
DANGER High Voltage
Attention Refer to the Manual
Protective Conductor Terminal
Earth (ground) Terminal
2
SAFETY INSTRUCTIONS
Safety Guidelines
General
Guideline
CAUTION

Do not place any heavy object on the power
supply.

Avoid severe impact or rough handling that
could lead to damaging the power supply.

Do not discharge static electricity to the power
supply.

Do not block or obstruct the cooling fan vent
openings.

Do not disassemble the power supply unless
you are qualified as service personnel.
(Measurement categories) EN 61010-1:2001 specifies the
measurement categories and their requirements as follows. The
PSP series power supplies fall 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.
 Measurement category I is for measurements performed on
circuits not directly connected to Mains.
Power Supply
WARNING
Fuse
WARNING

AC Input voltage: 115/230 VAC±15%.

Connect the protective grounding conductor of
the AC power cord to an earth ground, to avoid
electrical shock.

Fuse type: Slow blow T3.15A/250V (230V
input), T6.3A/250 (115V input).

Make sure the correct type of fuse is installed
before power up.
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PSP Series User Manual
Cleaning
Operation
Environment

For fire prevention, replace the fuse only with
the specified type and rating.

Disconnect the power cord before fuse
replacement.

Make sure the cause of the fuse blowout is fixed
before replacing the fuse.

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 or cleaners containing
harsh materials such as benzene, toluene,
xylene, and acetone.

Location: Indoor, no direct sunlight, dust free,
almost non-conductive pollution (Note below)

Relative Humidity: < 80%

Altitude: < 2000m

Temperature: 0°C to 40°C
(Pollution Degree) EN 61010-1:2001 specifies the pollution degrees
and their requirements as follows. The PSP power supply 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, nonconductive 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.
4
SAFETY INSTRUCTIONS
Storage
environment
General
Precautions
CAUTION

Location: Indoor

Relative Humidity: < 80%

Temperature: −10°C to 70°C

All electronically conducting materials (cables,
leads, terminals) must be sufficiently insulated.

Connected loads should not be left
unsupervised.

Ensure adequate ventilation for operation.

High voltages or current can be hazardous,
ensure proper safety precautions are used.

Do not use the power supply in situations
where condensation may have occurred, such as
where severe temperature/humidity
fluctuations have occurred.
5
PSP Series User Manual
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:
Green/ Yellow:
Earth
Blue:
Neutral
Brown:
Live (Phase)
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
This chapter describes the main features, front /
rear panel appearance, and how to set the power
supply connection.
Main Features ................................................... 8
Accessories ....................................................... 8
PSP Series Lineup ............................................. 9
Front Panel Overview ...................................... 10
Display Overview ............................................ 12
Rear Panel Overview ....................................... 14
Set Up ............................................................. 15
Power up .................................................................. 15
Single Power Supply Connection ............................ 15
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PSP Series User Manual
Main Features
Performance
Operation
Interface

200 watt output

0~60V/0~3.5A (PSP-606)

0~40V/0~5A (PSP-405)

0~20V/0~10A (PSP-2010)

High resolution and accuracy

Current, power and voltage limits.

Current limiter for short circuit and overload
protection

Key lock

Percentage offset output

LCD display

Digital scroll wheel

Course and fine control

Temperature and load controlled fan

Optional European terminals

Custom RS-232C (Please use GTL-232A cable
only)
Accessories
8

Power cord x1

Instruction manual x1

Test Lead x1
GETTING STARTED
PSP Series Lineup
The PSP Series are single output programmable switching DC
power supplies. There are 3 models in the PSP series lineup. For
detailed information, please see the specification table on page 58.
Model
Power
Voltage
Current
PSP-603
200W
0~60V
0~3.5A
PSP-405
200W
0~40V
0~5A
PSP-2010
200W
0~20V
0~10A
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PSP Series User Manual
Front Panel Overview
+ % Key
LCD Display
CF Key V set Key REM Key
Power Switch
- Output Terminal
V Limit Key Enter Key
LCD Display
CE key
V SET key
NORMAL Key
N Key
- % Key
F Key
Scroll Wheel
+ Output Terminal
Ground Terminal
P Limit Key
Output Key I Limit Key
Monochrome LCD display.
CE
Clears the last value entered.
V SET
Sets the output voltage level.
+% key
+%
Sets the positive percentage offset value
or increases the voltage output by the
positive percentage offset.
REM key
REM
Disables remote control. Activates all
keys that were disabled during remote
control.
NORMAL key
10
NORMAL
Returns the output voltage to the normal
preset level after +% or -% key has been
pressed.
GETTING STARTED
N
Sets the scroll wheel to Normal (coarse)
mode.
-% key
-%
Sets the negative percentage offset value
or decreases the voltage output by the
negative percentage offset.
LOCK
LOCK
N key
F key
F
Locks the scroll wheel and panel keys.
Sets the scroll to Fine mode.
Adjustments measurement
parameters and settings.
Scroll Wheel
Power:
POWER Switch
ON:
OFF:
V LIMIT
V LIMIT
Sets the voltage limit.
ENTER
ENTER
Confirms settings.
Negative terminal output.
- Output Terminal
P
LIMIT
P LIMIT
Ground terminal.
Ground Terminal
OUTPUT key
OUTPUT
Turns the output ON/OFF.
Positive terminal output.
+ Output
Terminal
I LIMIT
Sets the power limit.
I LIMIT
Sets the current limit.
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PSP Series User Manual
Display Overview
Current
Fine adjustment
indicator
Adjustment
indicator
Voltage
Limit indicator
Voltage limit
indicator
Current
limit
Voltage
limit
LI MI TS
fine
V- c o n s t
I-const
P-const
Ov er t emp
Out put
r emot e
Remote
Indicator
Power
locked
Panel lock
indicator
On Off
Power limit
indicator
Current limit
indicator
Overtemperature
indicator
Output On/Off
indicator
Power limit
Voltage
Displays the voltage output.
Current
Displays the current output.
Adjustment
Indicator
Displays the whether a parameter is adjusted
higher of lower.
Fine Adjustment Indicates when the scroll wheel is in fine mode.
Indicator
Voltage
limit/indicator
Used when adjusting the voltage limit.
Current
limit/Indicator
Used when adjusting the current limit.
Power limit
Indicator
Used when adjusting the power limit.
12
GETTING STARTED
Over temperature When the temperature exceeds the internal
indicator
temperature limit, the Over temperature indicator
is displayed.
Panel Lock
Front panel key lock.
Remote
Remote is displayed when in remote control mode.
Power
Displays the power output.
13
PSP Series User Manual
Rear Panel Overview
Power Socket
Voltage selector switch
Fuse
Power
Socket/Fuse
Cooling fan
RS232
The power socket accepts AC
mains voltage, 115V or 230V.
Fuse:
T3.15A/250V (230V input),
T6.3A/250V (115V input)
Voltage Selector
Cooling fan
RS-232
14
Sets the mains input voltage. Left,
230V, right, 115V.
Temperature or current load controlled fan. See
page 58.
Custom RS-232C connector for
remote control. (Please use GTL232A cable only)
GETTING STARTED
Set Up
Power up
Panel operation
115V
1. Set the rear panel
Voltage selector to the
correct position
according to the AC
mains voltage.
230V
2. Connect the power
cord to the socket.
3. Turn On the power
switch. The display
becomes active in 2~3
seconds.
Single Power Supply Connection
Panel operation
When connecting the power supply to a load,
please ensure the safety guidelines below are
adhered to.
PSP
+OUT
+IN
-OUT
-IN
Load
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PSP Series User Manual
Warning
Ensure the output is off when connecting any cables
to the power supply.
Inspect all cables or wires for damage before use. Any
exposed wiring from cables can be extremely
hazardous. If a cable is deemed hazardous, replace
before use.
1. Ensure the power supply’s output is turned off
before proceeding with any connections.
2. Connect the positive terminal of the power
supply to the positive terminal of the load.
3. Connect the negative terminal of the power
supply to the load.
16
OPERATION
OPERATION
The operation chapter describes how to set the
limits, output voltage and how to adjust
configuration settings.
Voltage Limit Settings ................................................ 18
Current Limit Settings ................................................ 19
Power Limit Settings................................................... 20
Voltage Output Setting ............................................... 21
Output ......................................................................... 22
Percentage Offset Output .......................................... 22
Percentage Offset Settings ......................................... 23
Scroll Wheel Step Resolution ..................................... 24
Key Panel Lock ............................................................ 24
Remote Panel Lock ..................................................... 25
17
PSP Series User Manual
Voltage Limit Settings
The voltage limit settings determine the maximum
voltage output for the power supply.
Panel operation
1. Press the V LIMIT key. The U-const
icon will flash.
V LIMIT
2. Use the scroll wheel to adjust the
voltage limit in the U-const field.
3. Press ENTER to confirm the limit
setting.
ENTER
LI MI TS
U-const
I-const
P-const
Out put
Off
Range
0~Rating
Step resolution
1 volt
Max Limit
4. Hold the V LIMIT key for 2 seconds to
set to the rating voltage and to exit.
V LIMIT
Clear
5. The CE key can be pressed to clear the
voltage limit to the previous value
when editing. This will also cancel
editing the voltage limit and exit.
CE
Note
18
Editing the voltage limit will automatically
adjust the power limit.
OPERATION
Current Limit Settings
The current limit settings determine the maximum
current output for the power supply.
Panel operation
1. Press the I LIMIT key. The I-const
icon will flash.
I LIMIT
2. Use the scroll wheel to adjust the
current limit in the I-const field.
3. Press ENTER to confirm the limit
setting.
ENTER
LI MI TS
U-const
I-const
P-const
Out put
Off
Range
0~Rating
Step resolution
Fine
1mA
Coarse
10mA
Max Limit
4. Hold the I LIMIT key for 2 seconds to
set to the rating current and to exit.
I LIMIT
Clear
5. The CE key can be pressed to clear the
current limit to the previous value
when editing. This will also cancel
editing the current limit and exit.
CE
Note
Editing the current limit will automatically adjust the
power limit.
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PSP Series User Manual
Power Limit Settings
The power limit settings determine the maximum
power output for the power supply.
Panel operation
1. Press the P LIMIT key. The P-const
icon will flash.
P LIMIT
2. Use the scroll wheel to adjust the
current limit in the P-const field.
3. Press ENTER to confirm the limit
setting.
ENTER
LI MI TS
U-const
I-const
P-const
Out put
Off
Range
0~Rating
Step resolution
1 watt
Max Limit
4. Hold the P LIMIT key for 2 seconds to
set to the rating power and to exit.
P LIMIT
Clear
5. The CE key can be pressed to clear the
power limit to the previous value
when editing. This will also cancel
editing the power limit and exit.
CE
Note
Editing the power limit will automatically adjust the
current limit.
20
OPERATION
Voltage Output Setting
The voltage output can be changed at any time
when the panel is not locked. The voltage output is
limited by the voltage limit value (U-const). The
voltage output can be edited regardless of whether
the output is on or off.
Panel operation
1. Use the scroll wheel to adjust the
Voltage output.
LI MI TS
U-const
I-const
P-const
Out put
Off
Range
0~voltage limit (U-const)
Step resolution
Fine
1 mV
Coarse
1V
21
PSP Series User Manual
Output
The output can be turned on or off via the
OUTPUT key. The power supply’s output is off by
default. The voltage output level can be changed
regardless of whether the output is on or off.
Panel operation
1. Press the OUTPUT key to turn
the output on or off. The output
status is displayed in the lower
left hand side.
OUTPUT
LI MI TS
U-const
I-const
P-const
Out put
On
Percentage Offset Output
The power supply output can be increased or
decreased by a percentage offset.
Panel operation
1. Turn the output on.
Percentage
Output
2. Press the + % key or the -% key to
increase or decrease the voltage
output by a set percentage offset. (see
page 23)
Normal Output
22
3. To cancel the percentage offset
output, press the NORMAL key to
revert the output to normal.
+%
or
-%
NORMAL
OPERATION
Percentage Offset Settings
The power supply output can be increased or
decreased by a set percentage. For example, if the
voltage output is 10V, and the +% value is 110,
then the voltage will increased to 110%, making
the final voltage 11V.
Panel operation
1. Ensure the Output is off.
2. Press the + % key or the -% key.
Page 22
+%
3. Use the scroll wheel to adjust the %
setting.
4. Press Enter to confirm the setting and
exit.
Range
ENTER
(-%) 50~100
(+%) 100~150
Step resolution
Exit
1%
5. Press CE to cancel and exit.
CE
23
PSP Series User Manual
Scroll Wheel Step Resolution
The Step resolution of the scroll wheel can be
adjusted by fine or coarse steps. Fine and Normal
(Coarse) mode is applicable to limit and voltage
output settings.
Fine Mode
1. Press the F key to select fine mode.
F
2. Fine will be displayed in the panel
when in fine mode.
fine
LI MI TS
U-const
I-const
P-const
Out put
Of f
Normal Mode
3. Press the N key to select Normal
(coarse) mode.
N
4. The fine icon will disappear when in
coarse mode.
Key Panel Lock
The panel keys and selector wheel can be locked to
prevent the settings being changed. When the
panel is locked only the power key and lock key
can be used.
Panel Operation
24
1. Press the LOCK key.
LOCK
OPERATION
2. When the panel is locked, locked will
be displayed at the bottom of the
display.
fine
LI MI TS
U-const
I-const
P-const
Out put
Of f
locked
Unlock
3. Press the LOCK key for two seconds.
LOCK
4. The locked icon will disappear.
Remote Panel Lock
When the PSP power supply is used via remote
control, the panel keys will be locked. Remote will
be displayed when remote control is active. The
REM key can be used to unlock the panel and
return the power supply to local control.
Panel Operation
1. Press the REM key.
REM
2. Remote will no longer be visible on
the display panel.
LI MI TS
U-const
I-const
P-const
Out put
r emot e
Of f
25
PSP Series User Manual
REMOTE CONTROL
This chapter describes how to configure the power
supply and PC for RS-232C remote control (Please
use GTL-232A cable only).
Interface Configuration ................................... 28
Configure RS-232C interface ................................... 28
RS-232C Setup ......................................................... 29
Command Syntax..................................................... 33
Command Set ................................................. 35
L ................................................................................ 35
V ............................................................................... 37
A ............................................................................... 38
W .............................................................................. 38
U ............................................................................... 39
I ................................................................................ 39
P ............................................................................... 40
F................................................................................ 41
SV+ ........................................................................... 42
SV- ............................................................................ 42
SU+........................................................................... 42
SU- ............................................................................ 43
SI+ ............................................................................ 43
SI- ............................................................................. 43
SP+ ........................................................................... 44
SP- ............................................................................ 44
SUM ......................................................................... 44
SIM ........................................................................... 45
SPM .......................................................................... 45
KF ............................................................................. 45
KN ............................................................................ 46
KO ............................................................................ 46
KOE .......................................................................... 46
KOD.......................................................................... 46
EEP ........................................................................... 47
B ............................................................................... 47
26
REMOTE CONTROL
D ............................................................................... 48
Q ............................................................................... 48
SB+ ........................................................................... 49
SB- ............................................................................ 49
SD+ ........................................................................... 49
SD- ............................................................................ 49
SV ............................................................................. 50
SU ............................................................................. 50
SI .............................................................................. 50
SP ............................................................................. 51
Setting for different command format ............. 52
27
PSP Series User Manual
Interface Configuration
Configure RS-232C interface
RS-232C
configuration
Connector
DB-9, Male
Baud rate
2400
Parity
None
Data bit
8
Stop bit
1
Data flow control
none
Connect the GTL-232A cable
(custom RS-232C) to the rear
panel port: DB-9 male
connector.
Pin assignment
12345
RS232
2: RxD (Receive data)
3: TxD (Transmit data)
6789
4: +12V
5: GND
1, 6, 7, 8, 9: No connection
PC connection
Use the GTL-232A cable (custom RS-232C) only.
The internal connection of GTL-232A is in the
below diagram.
PSP
Pin 2 RxD
Pin 3 TxD
Pin 4 12V
Pin 5 GND
28
PC
Pin
Pin
Pin
Pin
2 RxD
3 TxD
4 DTR
5 GND
REMOTE CONTROL
Note
Because DTR is controlled by software, it needs to
be set beforehand. Otherwise, it may cause that
12V can’t be output to PSP and no readback
response.
RS-232C Setup
Background
For remote control connection, the PSP power
supply series uses a custom RS-232C connection
with a propriety pin out configuration. Please use
the GTL-232A only. See the pin out configuration
on page 28.
Operation
1. Start the NI Measurement and
Automation Explorer (MAX)
program. Using Windows, press:
Start>All Programs>National
Instruments>Measurement & Automation
2. From the Configuration panel access;
My System>Devices and Interfaces>Network
Devices
29
PSP Series User Manual
3. Right click ASRL2: INSTR”COM2”
Note
Functionality
Check
The port number depends on which port you
connected to PSP Power Supply.
4. Click the Open Visa Test Panel.
4
3
5. Click on the Configuration icon.
6. Select the Serial Settings tab.
7. Set the Baud rate to 2400.
8. Click Apply Changes.
5
6
7
8
30
REMOTE CONTROL
9. Click on the Configuration icon.
10. Select the Flow Control Settings.
11. Click Apply Changes.
9
10
11
12
12. Click on the Configuration icon.
13. Select the I/O Settings tab.
14. Mark the Enable Termination Character
checkbox. Make sure the termination character
is a line feed (\n, value: xA).
15. Click Apply Changes.
13
14
15
16
31
PSP Series User Manual
16. Click the Input/Output icon.
17. Enter “L\r” in the Select or Enter Command
drop box.
18. Click on Query.
19. The information about xxx will be displayed in
the buffer as below.
17
18
19
20
32
REMOTE CONTROL
Command Syntax
Command types
The power supply has 25 remote commands.
Commands and queries can be written in either
ASCII or hexadecimal. All ASCII commands are
case sensitive. All parameters are format
sensitive.
Command
format
SV 10.00<CR>
12 3
2: space
4
3: parameter
4: message terminator
W<CR>
1
Return format
Parameters
1: command header
4
1: command header
P100<CR><LF> or
<CR><CR><LF> 2: parameter
1 2
3
3: message terminator
Type
Example
Description
xx
10
2 character ASCII
number, no decimal
places.
xx.x
10.5
4 character ASCII
number including the
decimal point. One
decimal place only.
xx.xx
10.50
5 character ASCII
number including the
decimal point. 2 decimal
places only.
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PSP Series User Manual
Hexadecimal
Message
terminators
Commands can be written in ASCII or
Hexadecimal. Below are examples of ASCII and
hexadecimal commands.
ASCII
W< CR>
Hex
57 0D
Each command must have a carriage return and
line feed character as a message terminator.
All return messages are terminated with a
carriage return and line feed terminator.
<CR><LF>
Note
34
Carriage return/line feed
Depend on firmware version, there will be
different ending characters for the response code.
It may appear on the display either <CR><LF>
0x0D 0x0A or <CR><CR><LF> 0x0D 0x0D 0x0A
Refer to the section of "Setting for different
command format" page for further information.
REMOTE CONTROL
Command Set
L
Query
Description
The L query returns all the status values of the
power supply.
Query Syntax
L<CR>
ASCII
4C 0D
HEX
Return Parameter Vvv.vvAa.aaaWwww.wUuuIi.iiPpppFf1f2f3f4f5f6<CR><LF
>
Character
Description
V
Voltage unit
vv.vv
Voltage value (5 characters, 2 decimal
places)
A
Current Unit
a.aaa
Current value (5 characters, 3 decimal
places)
W
Power unit
www.w
Power value (5 characters, 1 decimal
place)
U
Voltage limit unit
uu
Voltage limit value (2 characters, no
decimal)
I
Current limit unit
i.ii
Current limit value (4 characters, 2
decimal places)
P
Power limit unit
ppp
Power limit value (3 characters, no
decimal)
F
Status Byte character
35
PSP Series User Manual
f1f2f3f4f5f6
f1 :Relay Status:
0: on, 1: off
f2 :Temperature Status
0:normal, 1:overtemp
f3 : Step mode:
0:coarse, 1:fine
f4 : Scroll wheel status:
0:locked, 1:unlocked
f5 : Remote Status:
0:normal, 1:remote
f6 : Lock Status:
0:unlocked, 1:locked
Example
36
Returns the status
V20.00A2.500W050.0U40I5. values of the power
00P200F101100<CR><LF> supply in order.
20.00V output voltage,
2.500A output current,
50W output load, 40V
voltage limit, 5.00A
current limit, 200W
power limit, Relay off,
temperature normal, fine
step mode, scroll wheel
unlocked, remote status
normal, panel unlocked.
L<CR>
REMOTE CONTROL
V
Query
Description
The V query returns the voltage output of the
power supply.
Query Syntax
V<CR>
ASCII
56 0D
HEX
Return Parameter Vvv.vv<CR><LF>
Example
Character
Description
V
Voltage unit
vv.vv
Voltage value (5 characters, 2 decimal
places)
V<CR>
Returns the voltage output.
V20.00<CR><LF>
20.00V
37
PSP Series User Manual
A
Query
Description
The A query returns the current output of the
power supply.
Query Syntax
A<CR>
ASCII
41 0D
HEX
Return Parameter Aa.aaa<CR><LF>
Example
Character
Description
A
Current unit
a.aaa
current value (5 characters, 3 decimal
places)
A<CR>
Returns the current output.
A1.000<CR><LF>
1.000A
W
Query
Description
The W query returns the load output of the power
supply.
Query Syntax
W<CR>
ASCII
57 0D
HEX
Return Parameter Wwww.w<CR><LF>
Example
38
Character
Description
W
Power unit
www.w
power value (5 characters, 1 decimal
place)
W<CR>
Returns the load output.
W050.0<CR><LF>
50W
REMOTE CONTROL
U
Query
Description
The U query returns the current voltage limit.
Query Syntax
U<CR>
ASCII
55 0D
HEX
Return Parameter Uuu<CR><LF>
Example
Character
Description
U
Voltage limit unit
uu
Voltage limit value (2 characters, no
decimal)
U<CR>
Returns the current voltage limit.
U10<CR><LF>
10V
I
Query
Description
The I query returns the current current limit.
Query Syntax
I<CR>
ASCII
49 0D
HEX
Return Parameter Ii.ii<CR><LF>
Example
Character
Description
I
current limit unit
i.ii
Current limit value (5 characters, 2
decimal places)
I<CR>
Returns the current current limit.
I1.500<CR><LF> 1.5A
39
PSP Series User Manual
P
Query
Description
The P query returns the current power load limit.
Query Syntax
P<CR>
ASCII
50 0D
HEX
Return Parameter Pppp<CR><LF>
Example
Character
Description
P
Power load limit unit
ppp
Power limit value (3 characters, no
decimal)
P<CR>
Returns the current load limit.
P050<CR><LF> 50W
40
REMOTE CONTROL
F
Query
Description
The F query returns the status of the power
supply.
Query Syntax
F<CR>
ASCII
46 0D
HEX
Return Parameter F f1f2f3f4f5f6<CR><LF>
F
Status Byte character
f1f2f3f4f5f6
f1 :Relay Status:
0: off, 1: on
f2 :Temperature Status
0:normal, 1:overtemp
f3 : Step mode:
0: normal, 1:fine
f4 : Scroll wheel status:
0:locked, 1:unlocked
f5 : Remote Status:
0:normal, 1:remote
f6 : Lock Status:
0:unlocked, 1:locked
Example
Returns the status of the power
F101100<CR><LF> supply.
Relay on, temperature normal,
fine step mode, scroll wheel
unlocked, remote status normal,
panel unlocked.
F<CR>
41
PSP Series User Manual
SV+
Description
Command
The SV+ command increases the voltage output
by 1V (coarse mode) or 1mV(fine mode).
20.00V21.00V (coarse mode)
20.00V20.01V (fine mode)
Syntax
Example
SV+<CR>
ASCII
53 56 2B 0D
HEX
SV+<CR>
Increases the voltage output by
one unit.
SVDescription
Command
The SV- command decreases the voltage output
by 1V (coarse mode) or 1mV(fine mode).
20.00V19.00V (coarse mode)
20.00V19.99V (fine mode)
Syntax
Example
SV-<CR>
ASCII
53 56 2D 0D
HEX
SV-<CR>
SU+
Decreases the voltage output by
one unit.
Command
Description
The SU+ command increases the voltage limit by
1V.
Syntax
SU+<CR>
ASCII
53 55 2B 0D
HEX
Example
42
SU+<CR>
Increases the voltage limit by one
unit.
REMOTE CONTROL
SU-
Command
Description
The SU- command decreases the voltage limit by
1V.
Syntax
SU-<CR>
ASCII
53 55 2D 0D
HEX
Example
SU-<CR>
Decreases the voltage limit by one
unit.
SI+
Description
Command
The SI+ command increases the current limit by
10mA (coarse mode) or 1mA(fine mode).
3.01A3.11A (coarse mode)
3.01A3.02A (fine mode)
Syntax
Example
SI+<CR>
ASCII
53 49 2B 0D
HEX
SI+<CR>
Increases the current limit by
one unit.
SIDescription
Command
The SI- command decreases the current limit by
10mA (coarse mode) or 1mA(fine mode).
3.01A2.91A (coarse mode)
3.01A3.00A (fine mode)
Syntax
Example
SI-<CR>
ASCII
53 49 2D 0D
HEX
SI-<CR>
Decreases the current limit by
one unit.
43
PSP Series User Manual
SP+
Command
Description
The SP+ command increases the load limit by 1W.
Syntax
SP+<CR>
ASCII
53 50 2B 0D
HEX
Example
SP+<CR>
SP-
Increases the load limit by one
unit.
Command
Description
The SP- command decreases the load limit by 1W.
Syntax
SP-<CR>
ASCII
53 50 2D 0D
HEX
Example
SP-<CR>
SUM
Decreases the load limit by one
unit.
Command
Description
The SUM command sets the voltage limit to the
maximum rating.
Syntax
SUM<CR>
ASCII
53 55 4D 0D
HEX
Example
44
SUM<CR>
The voltage limit is set to the
maximum rating.
REMOTE CONTROL
SIM
Command
Description
The SIM command sets the current limit to the
maximum rating.
Syntax
SIM<CR>
ASCII
53 49 4D 0D
HEX
Example
SIM<CR>
SPM
The current limit is set to the
maximum rating.
Command
Description
The SPM command sets the load limit to the
maximum rating.
Syntax
SPM<CR>
ASCII
53 50 4D 0D
HEX
Example
SPM<CR>
KF
The load limit is set to the
maximum rating.
Command
Description
The KF command sets the step resolution to fine
mode.
Syntax
KF<CR>
ASCII
4B 46 0D
HEX
KF<CR>
The scroll wheel step resolution is
set to fine.
Example
45
PSP Series User Manual
KN
Command
Description
The KN command sets the step resolution to
normal (coarse) mode.
Syntax
KN<CR>
ASCII
4B 4E 0D
HEX
Example
The scroll wheel step resolution is
set to normal (coarse).
KN<CR>
KO
Command
Description
The KO command toggles the output On or Off.
Syntax
KO<CR>
ASCII
4B 4F 0D
HEX
Example
KO<CR>
Output is toggled OnOff or OffOn
KOE
Command
Description
The KOE command turns the output On.
Syntax
KOE<CR>
ASCII
4B 4F 45 0D
HEX
Example
KOE<CR>
KOD
Output is turned on.
Command
Description
The KOD command turns the output Off.
Syntax
KOD<CR>
ASCII
4B 4F 44 0D
HEX
Example
46
KOD<CR>
Output is turned off.
REMOTE CONTROL
EEP
Command
Description
The EEP command saves the settings to internal
memory. The settings will recalled upon the next
startup.
Syntax
EEP<CR>
ASCII
45 45 50 0D
HEX
Example
EEP<CR>
Save settings to memory.
B
Query
Description
The B query returns the +% value.
Query Syntax
B<CR>
ASCII
42 0D
HEX
Return Parameter Bbbb<CR><LF>
Example
Character
Description
B
+% unit
Bbb
+% value 100~150 (3 characters, no
decimal)
B<CR>
Returns the +%unit and value
B150<CR><LF>
150 %
47
PSP Series User Manual
D
Query
Description
The D query returns the -% value.
Query Syntax
D<CR>
ASCII
44 0D
HEX
Return Parameter Bbbb<CR><LF>
Example
Character
Description
D
-% unit
Dddd
-% value 50~100 (3 characters, no
decimal)
D<CR>
Returns the -%unit and value
D050<CR><LF>
50 %
Q
Query
Description
The Q query returns the status of -% and +%
offsets.
Query Syntax
Q<CR>
ASCII
51 0D
HEX
Return Parameter Qq1q2q3q4q5q6<CR><LF>
Q
Percentage Offset Character
q1q2q3q4q5q6
q1 :-% status:
0: off, 1: on
q2 : +% status
0:off, 1:on
q3-q6 : Not used
48
REMOTE CONTROL
SB+
Command
Description
The SB+ command increases the +% offset by 1%.
Syntax
SB+<CR>
ASCII
53 42 2B 0D
HEX
Example
SB+<CR>
SB-
Increase the +% offset by 1 percent.
Command
Description
The SB- command decreases the +% offset by 1%.
Syntax
SB-<CR>
ASCII
53 42 2D 0D
HEX
Example
SB-<CR>
SD+
Decrease the +% offset by 1 percent.
Command
Description
The SD+ command increases the -% offset by 1%.
Syntax
SD+<CR>
ASCII
53 44 2B 0D
HEX
Example
SD+<CR>
SD-
Increase the -% offset by 1 percent.
Command
Description
The SD- command decreases the -% offset by 1%.
Syntax
SB-<CR>
ASCII
53 44 2D 0D
HEX
Example
SD-<CR>
Decrease the _% offset by 1 percent.
49
PSP Series User Manual
SV
Command
Description
The SV command sets the voltage output level.
Syntax
SV <parameter> <CR>
ASCII
53 56 <parameter> 0D
HEX
Parameter
Example
<parameter>
Description
xx.xx
Voltage value( 5 characters, 2 decimal
places)
SV 10.50<CR>
Sets the voltage output to 10.5V.
SU
Command
Description
The SU command sets the voltage output limit.
Syntax
SU <parameter> <CR>
ASCII
53 55<parameter> 0D
HEX
Parameter
Example
<parameter>
Description
xx
Voltage value( 2 characters, no
decimal)
SU 11<CR>
Sets the voltage limit to 11V.
SI
Command
Description
The SI command sets the current limit. The power
limit will be automatically altered to suit.
Syntax
SI <parameter> <CR>
ASCII
53 49<parameter> 0D
HEX
Parameter
Example
50
<parameter>
Description
x.xx
Current limit value( 4 characters, two
decimal places)
SI 1.10<CR>
Sets the current limit to 1.10A.
REMOTE CONTROL
SP
Command
Description
The SP command sets the power limit. When the
power limit is changed the current limit will be
automatically altered to suit.
Syntax
SP <parameter> <CR>
ASCII
53 50<parameter> 0D
HEX
Parameter
Example
<parameter>
Description
xxx
Power limit value( 3 characters, no
decimal)
SP 100<CR>
Sets the power limit to 100W.
51
PSP Series User Manual
Setting for different command format
Background
UART setting can be used to deter if command
format to be modified for the PSP with firmware
V1.66 or above.
Before setting, please make sure that the
connection between a computer and the PSP is
normal by entering “L” from terminal (2400/ N8/
1 or 9600/ N/ 8/1) and get the response message
as shown in the diagram below.
Note
52
Please complete the settings within 15 seconds
after power is on because setting can’t be changed
after 15 seconds.
The setting procedure only needs to be executed
once. Afterward, the device will be kept in the
same setting mode when the device is turned on
every time.
REMOTE CONTROL
Operation
1. Set PSP1 with setting A (see note below), then
Enter “URPSP1”.
The PSP's response is shown in the diagram
below and has beep sound.
2. Set PSP2 without A(see note below), then Enter
“URPSP2”.
The PSP's response is shown in the diagram
below and has beep sound.
Note
The difference between firmware V1.55 and the
current firmware version for shipping PSP (V1.66).
When the letter “A” appears on the PSP’s display
as shown in the diagram below, it means that it is
setting with A and the terminator for response
message is 0x0D 0x0D 0x0A. Otherwise, it is 0x0D
0x0A.
When setting is with A, the terminator for
responsed message on the display is
53
PSP Series User Manual
0x0D 0x0D 0x0A as shown in the diagram below.
When setting is without A, the terminator for
responsed message on the display is 0x0D 0x0A as
shown in the diagram below.
On the other hand, you can judge if setting is with
A by the readback voltage value.
When you see the readback voltage value insert an
“0”digit before first digit if for voltage value less
than 10, it means that setting is with A.
For example, if readback voltage value is 5V as the
diagram shown below, it means that setting is
with A.
54
REMOTE CONTROL
Otherwise, it is setting without A as the diagram
shown below.
55
PSP Series User Manual
FAQ
Q1. No Display.
A1.

Ensure the power supply is turned on.

Ensure the mains cable is properly inserted and power is on.
Check the fuse assembly.
Q2. The front panel keys are inactive.
A2.

The panel lock or remote control is activated. See page 24, 25.
For more information, contact your local dealer or GWInstek at
www.gwinstek.com.tw / marketing@goodwill.com.tw.
56
APPENDIX
APPENDIX
Fuse Replacement
Step
3. Take off the power cord and remove the fuse
socket using a minus driver.




 







4. Replace the fuse in the holder.
Rating
T3.15A/250V
57
PSP Series User Manual
Fan
Cooling fan
The PSP has a temperature or load controlled fan.
The fan will be activated when the temperature or
current exceeds a set level (model specific).
Model
PSP-405
PSP-603
PSP-2010
Fan On
45˚C±5˚C
45˚C±5˚C
45˚C±5˚C
2.10A±50mA
1.40±50mA
2.10±50mA
40˚C±5˚C
40˚C±5˚C
40˚C±5˚C
1.80A±50mA
1.20A±50mA
1.80A±50mA
Fan Off
58
APPENDIX
Specification
PSP-603
Model
Operating voltage
PSP-405
PSP-2010
115/230 VAC ±15%
Power frequency
50/60 Hz
Power consumption
approx. 420VA max.
Power output
200W max.
Output voltage
0~60VDC
0~40VDC
0~20VDC
20mV resolution 10mV resolution 10mV resolution
Program Accuracy
±0.05%±4 digits ±0.05%±3 digits ±0.05%±3 digits
Output Current
0~3.5A
0~5A
0~10A
2mA resolution 2mA resolution 5mA resolution
Program Accuracy
±0.1%±5 digits
±0.1%±5 digits ±0.3%±10 digits
Voltage Load
Regulation
≦ 10 mV
Current Load
Regulation
≦ 5 mA
Voltage Line
Regulation.
≦ 0.05%
Current Line
Regulation
≦ 0.05%
Ripple Voltage
≦ 20 mV rms
Ripple Current
≦ 10 mArms
Readback
Resolution(Meter)
20mV 2mA
Response Rise Time
Time
Full Time
Recovery Time
10mV 2mA
10mV 5mA
≦150ms(≦95% rating load)
≦150ms(≧10% rating load)
30ms(50% Load Change, Minimum load 0.5A)
Readback Accuracy (Meter)
Voltage
±0.05%±4 digits ±0.05%±3 digits ±0.05%±3 digits
59
PSP Series User Manual
Current
Digital Display
±0.1%±5 digits
±0.1%±5 digits
±0.3%±10 digits
Multi-line LCD with background lighting
AC fuse
Slow-blow T6.3A/250V for 115V, T3.15A/250V for 230V
Weight
Approx. 4 kg
Dimensions
Approx. 225×100×305 m/m
(W × H × D)
(excluding stand and power cable)
Command
Process Time
250ms
Interface
(Standard)
60
RS-232C
APPENDIX
Declaration of Conformity
We
GOOD WILL INSTRUMENT CO., LTD.
Declare that the below mentioned product
Model Number: PSP-405, PSP-603, PSP-2010
satisfies all technical relations application to the product within the
scope of council:
Directive: 2014/30/EU, 2014/35/EU, 2011/65/EU, 2012/19/EU
The above product is in conformity with the following standards or other
normative documents:
◎ EMC
EN 61326-1:
Electrical equipment for measurement, control and
EN 61326-2-1:
laboratory use –– EMC requirements (2013)
Conducted & Radiated Emission
Electrical Fast Transients
EN 55011: 2009+A1:2010
Class A
EN 61000-4-4: 2012
Current Harmonics
Surge Immunity
EN 61000-3-2: 2014
EN 61000-4-5: 2014
Voltage Fluctuations
Conducted Susceptibility
EN 61000-3-3:2013
EN 61000-4-6: 2014
Electrostatic Discharge
Power Frequency Magnetic Field
EN 61000-4-2: 2009
EN 61000-4-8: 2010
Radiated Immunity
Voltage Dip/ Interruption
EN 61000-4-3: 2006+A2: 2010
EN 61000-4-11: 2004
◎ Safety
Low Voltage Equipment Directive 2014/35/EU
Safety Requirements
EN 61010-1: 2010
GOOD WILL INSTRUMENT CO., LTD.
No. 7-1, Jhongsing Road, Tucheng Dist., New Taipei City 236, Taiwan
Tel: +886-2-2268-0389
Fax: +866-2-2268-0639
Web: www.gwinstek.com
Email: marketing@goodwill.com.tw
GOOD WILL INSTRUMENT (SUZHOU) CO., LTD.
No. 521, Zhujiang Road, Snd, Suzhou Jiangsu 215011, China
Tel: +86-512-6661-7177
Fax: +86-512-6661-7277
Web: www.instek.com.cn
Email: marketing@instek.com.cn
GOOD WILL INSTRUMENT EURO B.V.
De Run 5427A, 5504DG Veldhoven, The Netherlands
Tel: +31(0)40-2557790
Fax: +31(0)40-2541194
Email: sales@gw-instek.eu
61
PSP Series User Manual
INDEX
Caution symbol .................. 2, 29
Cleaning the instrument .......... 4
Coarse mode ........................... 24
Command
format ..................................... 33
parameter ............................... 33
syntax...................................... 33
terminators ............................. 34
Current limit settings ............. 19
Display overview ................... 12
EN61010
measurement category ........... 3
pollution degree ...................... 4
Fine mode ................................ 24
front panel overview .............. 10
fuse
replacing ................................. 57
Fuse
safety instruction ..................... 3
General precautions ................. 5
ground symbol.......................... 2
Key panel lock ........................ 24
Main features ............................ 8
No display
faq............................................ 56
Normal mode .......................... 24
Operating environment ........... 4
62
Operation ................................. 17
Output ...................................... 22
panel keys
faq ............................................56
Percentage offset output ........ 22
Percentage offset settings ...... 23
Power limit settings ................ 20
Power supply
safety instruction .................... 3
Power up sequence ................. 15
PSP series lineup ....................... 9
Rear panel overview............... 14
remote control ......................... 26
Remote Panel Lock ................. 25
RS-232C configuration ........... 28
Safety guidelines ....................... 3
service contanct point ............ 56
Single power supply
connection............................ 15
Step resolution ........................ 24
Storage environment ................ 5
UK power cord .......................... 6
Voltage limit settings.............. 18
Voltage output settings .......... 21
Warning symbol ....................... 2