Page 1
FA-405
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
TestEquipmentDepot.com
PROGRAMMABLE POWER SUPPLY
- 0 MI1149 -
Page 2
SAFETY NOTES
Read the user’s manual before using the equipment, mainly " SAFETY RULES "
paragraph.
The symbol
manual may also appear as a Caution or Warning symbol.
Warning and Caution statements may appear in this manual to avoid injury
hazard or damage to this product or other property.
on the e
quipment means "SEE USER’S MANUAL". In this
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USER’S MANUAL FA-405
TABLE OF CONTENTS
1. GENERAL...............................................................................................................1
1.1 Description........................................................................................................1
1.2 Specifications....................................................................................................1
2. SAFETY RULES .....................................................................................................3
2.1 General .............................................................................................................3
2.2 Descriptive Examples of Over-Voltage Categories ............................................5
3. INSTALLATION.......................................................................................................7
3.1 Power Supply....................................................................................................7
3.2 Line Voltage conversion....................................................................................7
4. OPERATING INSTRUCTIONS................................................................................8
4.1 Front Panel Description.....................................................................................8
4.2 Rear Panel Description .....................................................................................9
4.3 Starting Up......................................................................................................10
4.4 Operating instructions with keypad input .........................................................11
4.4.1 Setting the limits .......................................................................................... 11
4.4.2 Voltage output settings .................................................................................12
4.4.3 Controlling the output....................................................................................13
4.4.4 +%
4.4.5 "REM" key ....................................................................................................14
4.5 Comments on handling ...................................................................................14
4.5.1 Rectification of faults.....................................................................................14
4.5.2 Fan Control...................................................................................................15
, -% settings............................................................................................13
English
5. MAINTENANCE....................................................................................................17
5.1 Replacing the mains fuse ................................................................................17
5.2 Cleaning Recommendations ...........................................................................17
6. APPENDIX: CONNECTING VIA RS-232 INTERFACE ..........................................17
6.1 RS-232 interface capabilities...........................................................................17
6.2 Notes for RS-232 installation...........................................................................17
6.3 Computer’s connection....................................................................................19
6.4 List of commands ............................................................................................ 19
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USER’S MANUAL FA-405
PROGRAMMABLE POWER SUPPLY
FA-405
1. GENERAL
1.1 Description
The
display built to the latest technological standards.
With its continuously adjustable voltage and current settings, this power supply can
be used universally in school, work, hobby, and other applications. An electronic current
limiter protects the power supply from overload and short-circuits at its output; a fan
controlled by a temperature circuit protects the power supply (its electronics) from
thermal overload.
During such an overload (short circuit or overload) the output is regulated down, i.e.
the voltage is reduced. Only when the short-circuit has been remedied is the output
released.
The set values can be read via the illuminated multiple-line LCD display. The
voltage, current or power setting is adjusted by means of an encoder wheel in 10mV,
1V, 10mA, 0.1A and 1 W steps respectively. Therefore the exact adjustment of the
output voltage and the current limit and maximum output power is possible.
Construction is in accordance with VDE 0411 = EN 61010. Moreover, the
has been EMV-tested and fulfils the requirements of the applicable European and
national directives.
To maintain this condition and to guarantee safe operation, the user must observe
these operating instructions without fail.
is a programmable switching power supply with backlight liquid crystal
FA-405
FA-405
1.2 Specifications
MAIN OUTPUT
Output voltage
Program accuracy
Output current
Program accuracy
Voltage load regulation
Current load regulation ≤ 5 mA
Voltage line regulation ≤ 0.05%
Current line regulation ≤ 0.05%
0~40 VDC, 10 mV resolution
0.05 % ± 3 digits
±
0~5 A, 2 mA resolution
0.1 % ± 5 digits
±
≤ 10 mV
English
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USER’S MANUAL. FA-405
Ripple voltage ≤
Ripple current ≤
Readback resolution (Meter)
20 mV rms
10 mA rms
10 mV 2 mA
READBACK ACCURACY (METER)
0.05 % ± 3 digits
Voltage
Current
Digital display
±
0.1 % ± 5 digits
±
Multi-line LCD with background lighting
OPERATING ENVIRONMENTAL CONDITIONS
Operating
Ambient temperature range
Relative humidity
Storage temperature
Indoor use, altitude up to 2000m.
0 °C to +40 °C
Max 80 % , non condensing
-10 °C to +70 °C
POWER SUPPLY
Mains voltage
Consumption
115/230 VAC
approx. 420 VA max.
MECHANICAL FEATURES
Dimensions
Weight
225 (W) x 100 (H) x 305 (D) mm
Approx. 4 kgs
INCLUDED ACCESSORIES
1 x Power Cord
1 x User’s manual
15 % 50/60 Hz
±
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USER’S MANUAL FA-405
2. SAFETY RULES
2.1 General
* Use this equipment connected
measurement connected to ground potential
* This is a
corresponding earth connection
* This equipment can be used in
Degree 1
* When using some of the following accessories
ensure safety.
Power cord
* Observe all
* Remember that voltages higher than
* Use this instrument under the
*
The user is only authorised to
Replace the mains fuse that must be of the
On the Maintenance paragraph the proper instructions are given.
Any other change on the equipment should be carried out by qualified
personnel.
*
Do not obstruct the ventilation system
equipment, for safety reasons plug it to a
Class I
environments.
CA-005
specified rating
only to systems with their negative of
.
Overvoltage Category II
both of supply and measurement.
60 V DC or 30 V AC rms
specified environmental conditions
carry out the following maintenance operations:
of the instrument.
.
supply line with the
installations and
use only the specified ones
are dangerous.
and
type
value specified
Pollution
.
.
to
English
* Follow the
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cleaning instructions
described in the Maintenance paragraph.
Page 7
* Symbols related with safety:
DIRECT CURRENT
ALTERNATING CURRENT
DIRECT AND ALTERNATING
GROUND TERMINAL
PROTECTIVE CONDUCTOR
FRAME TERMINAL
EQUIPOTENTIALITY
ON (Supply)
USER’S MANUAL. FA-405
OFF (Supply)
DOUBLE INSULATION
(Class II Protection)
CAUTION
(Risk of electric shock)
CAUTION REFER TO MANUAL
FUSE
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USER’S MANUAL FA-405
2.2 Descriptive Examples of Over-Voltage Categories
Cat I
Cat II
Cat III
Cat IV
Low voltage installations isolated from the mains
Portable domestic installations
Fixed domestic installations
Industrial installations
English
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USER’S MANUAL. FA-405
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USER’S MANUAL FA-405
3. INSTALLATION
3.1 Power Supply
This instrument has been designed to be supplied with a mains voltage of 115 or
230 V AC, 50-60 Hz. For your safety, the sources are protected by a
line and use a standard mains plug with earth connection.
3.2 Mains Voltage Conversion
Conversion from one mains voltage to 115 or 230 VAC is done by change AC
selects switch [9] as shown in Fig. 2.
To convert to different line voltage, perform the following procedure:
(1) Make sure the power cord is unplugged.
(2) Set the AC switch to the desired line voltage position.
(3) Verify that the mains fuse has the suitable value, you must see section
Maintenance.
in the input
fuse
English
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USER’S MANUAL. FA-405
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USER’S MANUAL FA-405
4. OPERATING INSTRUCTIONS
4.1 Front Panel Description
AC@8C2>>23= 6 A@H6C D FAA=J 72 %!&
English
Figure 1.-
[1] Connector sockets:
: negative connection "-", 1b: earth connection and 1c: positive connection "+".
1a
[2] "POWER" AC switch for switching the power supply on ("I") and off ("O").
[3] Encoder wheel for changing the V SET, V LIMIT, I LIMIT, P LIMIT, +%, and -
% parameter settings.
[4] Keypad for actual operation of the Switching Power Supply
exact description follows below.
[5] Backlight LCD Display with indication of the output voltage, current, power
settings and indication of the V, I and P limits. Additionally, indication of
OUTPUT On or Off and keypad locked or unlocked.
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Front panel
FA-405
. The
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4.2 Rear Panel Description
USER’S MANUAL. FA-405
Figure 2.-
Rear panel.
[6] AC rear power socket.
[7] RS-232 interface (with optocoupler) for connection to PC.
[8] Cooling fan.
[9] AC Selector
4.3 Starting Up
a) Connect the AC power cable to the AC power socket and ensure that it is firmly
seated. Then plug the earthed power plug into an earthed AC power socket.
Attention: The continuity of the safety earth wire must be
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unbroken within the instrument, within the AC power
cable and within the AC power socket otherwise life
will be endangered.
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USER’S MANUAL FA-405
b) Press the AC power On/Off switch
Attention: The earth connector in the front of the instrument and
Before operating the instrument each time, first check and ensure that the supply
output cables of the instrument is well fit of no damage.
4.4
Operating Instructions with keypad input
the RS-232 interface connector earth are connected
directly with the earthing wire of the AC power input
socket and of the connected AC power socket.
4.4.1 Setting the limits
The voltage, current and power output values are each limited to a maximum. This
upper limit can be varied downwards. Setting the limits is carried out using the “ V
LIMIT” “I LIMIT” “P LIMIT” keys as follows:
Voltage limit
V LIMIT
" key in the "LIMITS" field until the symbol "U-const"
" key is now pressed for longer than 2s,
" key. An inadvertently
" key. As a
" key in the "LIMITS" field until the symbol "I-const"
") or
", coarse) steps by using the encoder wheel. If the "I
" key. An inadvertently wrong-set limit setting can be
" key. As a result of this, the previous set
I LIMIT
Current limit
Press the "V LIMIT
flashes. The voltage limit can now be adjusted to 1V steps by using the
encoder wheel. If the "V LIMIT
the voltage upper limit will again be set at "maximum voltage value"
(40V). To complete the input, press the "ENTER
wrong-set limit setting can be erased/reset with the " CE
result of this, the previous set value will be indicated and the setting
menu exited. The "U-const" will no longer flash.
During operation, the voltage output can also be adjusted up to the set
limit.
Press the " I LIMIT
flashes. The current limit can now be adjusted to 10mA ("FINE
100mA ("NORM
LIMIT" key is now pressed for longer than 2s, the current upper limit will
again be set at "rmaximum current value" (5A). To complete the input,
press the "ENTER
erased/reset with the " CE
value will be indicated and the setting menu exited. The "I-const" will no
longer flash.
English
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P LIMIT Power limit
Press the "P LIMIT
flashes. The power limit can now be adjusted to 1 W steps by using the
encoder wheel. If the "P LIMIT
the power upper limit will again be set at "200 W". To complete the
input, press the "ENTER
can be erased/reset with the " CE
set value will be indicated and the setting menu exited. The "P-const"
will no longer flash.
Attention: The current "I LIMIT" is adjusted independently of its
setting by the maximum output power setting. The
voltage upper limit does not change.
4.4.2 Voltage output settings
USER’S MANUAL. FA-405
" key in the "LIMITS" field until the symbol "P-const"
" key is now pressed for longer than 2s,
" key. An inadvertently wrong-set limit setting
" key. As a result of this, the previous
V SET
Using the "V SET " key, the output voltage can be adjusted up to the
preset upper limit directly. For this the "V SET
and held and the voltage changed with the encoder wheel. If the "fine"
key is selected, the changes occur in 10 mV steps. If "norm" N key
F
is selected, the changes occur in 1V steps.
Each input via the "LIMITS" keypad is completed with the "ENTER
ENTER
key.
Any values incorrectly entered via the "LIMITS" keypad can be reset
CE
F
LOCK
with the "CE
If the "N
If the "F
Pressing the "LOCK
" key.
" key is pressed, the "fine" symbol disappears from the display.
" key is pressed, the symbol "fine" appears on the display.
against inadvertent adjustment. Only the "Power" switch remains active.
Locking is indicated by the "locked" symbol in the bottom line of the
display. If the "LOCK
operating elements are released again (unlocked).
4.4.3 Controlling the output
OUTPUT
The output of the power supply is switched on or off via a relay with the
"OUTPUT
" key. In the process, the status "On" or "Off" is indicated at
the bottom right of the display. On switching the power supply on, the
output is always in switched-off status.
" key must be pressed
"
" key locks/blocks all keys and the encoder wheel
" key is pressed again (> approx. 2s), then the
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USER’S MANUAL FA-405
4.4.4 +%, -% settings
+%
-%
For example:
Under output off status, press +% key once, the LCD display will
indicate xxx (the multiple value in percentage on the established
voltage of the original storage data), now set the +% value by using
the knob and press ENTER
output is in the “ON” status, press +%
changed according to the saved multiple value in percentage.
Under output off status, press -% key once, the LCD display will
indicate xxx (the multiple value in percentage of the original storage
data), now set the -% value by using the knob and press ENTER
key to save it. Afterward, when the output is in the “ON” status,
press -% key, the output will be changed according to the saved
multiple value in percentage.
Set the output voltage as 10.00V, the save value of +% is 105, and
the save value of -% is 95. The +% key is pressed, output voltage will
be changed to 10.00V × 1.05 = 10.50V, while the -% key is pressed,
output voltage will be changed to 10.00V × 0.95 = 9.50V. The output
voltage will be back to normal by pressing the normal key.
key to save it. Afterward, when the
key, the output will be
4.4.5 "REM" key
A serial RS-232 interface is incorporated on the rear of the case. With the
appropriate interface cable and optional software, communication with an IBMcompatible PC is therefore possible. The interface is naturally via an optocoupler.
Clear the Remote Control mode and use panel control setting instead.
REM
Thereupon, as with "LOCK", all operating elements (except POWER) are
locked against direct input.
English
4.5 Comments on handling
4.5.1 Rectification of faults
With the
instrument constructed to the latest technological standards. However, faults can occur.
Because of this, the following describes how some of these problems can be resolved
by the user relatively easily:
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power supply you have acquired a new generation measuring
FA-405
Page 17
Problem Possible solution
No display
Is the instrument switched on?
•
Is the AC power plug making good contact both in the instrument
•
and in the AC power socket?
Is the AC fuse OK?
•
USER’S MANUAL. FA-405
No input possible
•
" or "REM"; key pressed; see under section 4.4.2 or 4.4.5
"LOCK
Attention: Except when this is possible manually, the opening of
covers or removal of parts can expose voltagecarrying components. Connection points may also be
live. Before any adjustment, maintenance, repair or
exchange of parts or assemblies requiring opening of
the unit, the unit must be disconnected from all voltage
sources and measurement circuits. If the adjustment
maintenance or repair is subsequently required for the
open unit, these must only be performed by a
specialist familiar with the associated hazards and
relevant regulations (VDE-0100, VDE-0701, VDE0683).
Capacitors within the instrument can remain charged
even when the unit has been disconnected from all
voltage sources and measurement circuits..
4.5.2 Fan Control
1. The fan of the power supply will not work upon power on until the temperature
or load current reaches the condition as follows:
Temperature oriented:
•
When the temperature of the power supply reaches to range of 45 °C 5°C
for 5 to 6 seconds, the fan starts to work, while the temperature is less than
40 °C 5°C the fan stops rolling.
Load current oriented:
•
After the load current reaches to the value 2.10A 50mA the fan will keep
on rolling when current reaches to the value 1.80A ± 50mA the fan will stop.
2. To avoid damaging the power supply, if the fan failed to work when the
temperature or current has reached to the specific condition, please power off
the instrument and contact our local distributor for service.
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USER’S MANUAL FA-405
5. MAINTENANCE
5.1 Replacing the mains fuse
If the fuse blown, the display will be off and the power supply will not operate. The
fuse should not normally blow unless a problem has developed in the unit. Try to
determine and correct cause of the blown fuse, then replace only with a fuse of the
correct rating and type. The fuse is located on the rear panel (see Fig. 2).
CAUTION
For continued fire protection. Replace with 250V fuse of the specified type and
rating, and disconnect the power cord before replacing fuse.
FUSE TYPE SHOULD BE:
For 230 V AC: Type IEC127 5 x 20 mm. 250 V Time-lag (T) 3.15 A
For 115 V AC: Type IEC127 5 x 20 mm. 250 V Time-lag (T) 6.3 A
AVOIDING THESE DIRECTIONS COULD DAMAGE THE EQUIPMENT
Make sure that only the fuses of the given types and nominal current ratings are
used as replacements. The use of repaired fuses or the bridging of fuse holders is not
permitted. A small flat-bladed screwdriver is required to change the AC fuse. Carefully
lever up the cover in the AC power socket and withdraw it. Remove the defective fuse
and replace it with an intact one of the same type and nominal current rating. Afterwards
replace the fuse cover.
The measuring instrument is operated only when the case is securely closed and
screwed up.
5.2 Cleaning Recommendations
CAUTION
Make sure that the device is disconnected when cleaning the casing.
CAUTION
Do not use aromatic hydrocarbons or chlorinated solvents for cleaning. These
products can attack the materials used in the casing.
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English
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USER’S MANUAL. FA-405
The casing may be cleaned with a light solution of detergent with water and applied
with a soft damp cloth.
Dry completely before using the device again.
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USER’S MANUAL FA-405
6. APPENDIX: CONNECTING VIA RS-232 INTERFACE
6.1 RS-232 Interface Capabilities
The RS232 interface provides a point-to-point connection between two items of
equipment such as a computer and the power supply. There are some parameters you
need to set on the both sides. Once you have set these parameters, you can control the
power supply through the RS232 interface.
Baud rate: 2400 baud.
•
Parity bit: none.
•
Data bit: 8 bits.
•
Stop bit: 1 stop bit.
•
Data flow control: none.
•
6.2 Notes for RS-232 Installation
The power supply is a DTE device with a 9-pin D-type shell RS-232 connector
located on the rear panel. Fig. 3 shows the equipment of 9-pin connector (Male) with its
pin number assignments. Fig. 4 shows the wiring configuration for DB9 to DB9. When
the programmable power supply is set up with a RS-232 interface, please check the
following points:
• Do not connect the output line of one DTE device to the output line of the other.
• Many devices require a constant high signal on one or more input pins.
• Ensure that the signal ground of the equipment is connected to the signal
ground of the external device.
• Ensure that the chassis ground of the equipment is connected to the chassis
ground of the external device.
• Do not use more than 15m of cable to connect devices to a PC.
• Ensure the same baud rate is used on the device as the one used on PC
terminal.
• Ensure the connector for the both side of cable and the internal connected line
are met the demand of the instrument.
English
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USER’S MANUAL. FA-405
1. No connection
2. Receive Data (RxD) (input)
3. Transmit Data (TxD) (output)
4. +12V Input (*) (input)
5. Signal Ground (GND)
6. No connection
7. No connection
8. No connection
No connection
9.
*Note: This pin needs a constant high signal (+12V).
Figure 3.-
Pin assignments of the RS-232 connector on the rear panel for DB-9-D
EQUIPMENT COMPUTER
(DB9, DTE) (DB9, DTE)
Pin 2 Pin 2
Pin 3 Pin 3
Pin 4 Pin 4
Pin 5 Pin 5
Figure 4.-
Wiring configuration for DB9 to DB9.
6.3 Computer’s connection
A personal computer with a COM port is the essential facilities in order to operate
the programmable power supply via RS-232 interface.
The connections between power supply and computer are as follows:
Connect one end of a RS232 cable to the computer.
I.
II. Connect the other end of the cable to the RS-232 port on the programmable
power supply.
III. Turn on the programmable power supply.
IV. Turn on the computer.
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USER’S MANUAL FA-405
6.4 List of commands
The power supply has 25 commands available. Every command is end up with <cr>
(ASCII 0Dh or ACSCII 0D 0A acceptable). The return message <cr>of the power supply
is CR/LF (ASCII 0D 0A).
L
Function:
Syntax:
Explain:
To obtain all the status values of the power supply.
L<cr> HEX = 4C 0D
When the message L<cr>is sent to the power supply from computer, the
power supply will return the message as follows immediately:
Vvv.vvAa.aaaWwww.wUuuIi.iiPpppFffffff<cr> 37 characters totally
The contents consist of the uppercase V,A,W,U,I,P,F, the numeral from 0
to 9 and decimal. Further details is described as follows:
vv.vv = The present output voltage, the unit: V.
a.aaa = The present output current, the unit: A.
www.w = The present output load, the unit: W.
uu = The maximum voltage limit at present, the unit: V.
i.ii = The maximum current limit at present, the unit: A.
ppp = The maximum load limit at present, the unit: W.
ffffff = The status of power supply at present.
st
1
f = the relay status 0: OFF 1:ON
nd
2
f = the temperature status 0: Normal 1: Overheat
rd
3
f = the wheel knob status 0: Normal 1: Fine
th
4
f = the wheel knob status 0: Lock 1: Unlock
th
5
f = the remote status 0: Normal 1: Remote(*)
th
6
f = the lock status 0: Unlock 1: Lock
NOTE: The setting is workable through computer only when the remote is at 1.
All the data above is in the range from 0 to 9.
English
When the uppercase U becoming the lowercase u means that the status is in the
setting of the voltage limit mode.
When the uppercase I becoming the lowercase i means that the status is in the setting
of the current limit mode.
When the uppercase P becoming the lowercase p means that the status is in the
setting of the load limit mode.
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USER’S MANUAL. FA-405
N
N
W
(
W
T
R
V
Example:
Function:
Syntax:
The return message from power supply is:
V20.00A2.500W050.0U40I5.00P200F101000<cr>
V20.00 means that the present output voltage is at 20.00V.
A2.500 means that the present output current is at 2.500A.
W050.0 means that the present output load is at 050.0W.
U40 means that the present voltage limit is at 40V.
15.00 means that the present current limit is at 5.00A.
P200 means that the present load limit is at 200W.
F101000
ot yet getting into Lock mode.
ot yet getting into Remote mode.
heel knob setting acceptable
this signal can be ignored)
heel knob is in the Fine mode.
he temperature isn't overheat.
elay on.
The present output voltage, the unit is V.
V<cr> HEX = 56 0D
Explain:
When the message of V<cr>is sent to the power supply from computer,
the power supply will return the following message immediately:
Vvv.vv<cr> 6 characters totally + CR/LF
The contents consist of the uppercase V, the numeral from 0 to 9 and
decimal. Further details is described as follows:
vv.vv = The present output voltage, the unit: V
A
Function:
Syntax:
Page 20 12/2003
The present output current, the unit is A.
A<cr> HEX = 41 0D
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USER’S MANUAL FA-405
W
U
Explain:
Function:
Syntax:
Explain:
Function:
When the message of A<cr>is sent to the power supply from computer,
the power supply will return the following message immediately:
Aa.aaa<cr> 6 characters totally + CR/LF
The contents consist of the uppercase A, the numeral from 0 to 9 and
decimal. Further details is described as follows:
a.aaa = The present output current, the unit: A
The present output load, the unit is W.
W<cr> HEX = 57 0D
When the message of W<cr>is sent to the power supply from computer,
the power supply will return the following message immediately:
Wwww.w<cr> 6 characters totally + CR/LF
The contents consist of the uppercase W, the numeral from 0 to 9 and
decimal. Further details is described as follows:
www.w = The present output load, the unit: W
The maximum voltage limit at present, the unit is V.
English
Syntax:
Explain:
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U<cr> HEX = 55 0D
When the message of U<cr> is sent to the power supply from computer,
the power supply will return the following message immediately:
Uuu<cr> 3 characters totally + CR/LF
The contents consist of the uppercase U and the numeral from 0 to 9.
Further details is described as follows:
uu = The maximum voltage limit at present, the unit: V
When the uppercase U becoming the lowercase u means that the power
supply is in the setting status of voltage limit mode.
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USER’S MANUAL. FA-405
I
P
Function:
Syntax:
Explain:
Function:
Syntax
Explain:
The maximum current limit at present, the unit is A.
I<cr> HEX = 49 0D
When the message of I<cr>is sent to the power supply from computer,
the power supply will return the following message immediately:
The contents consist of the uppercase I, the numeral from 0 to 9 and
decimal. Further details is described as follows:
When the uppercase I becoming the lowercase i means that the power
supply is in the setting status of current limit mode.
The maximum output load limit at present, the unit is W.
: L<cr> HEX = 50 0D
When the message of L<cr>is sent to the power supply from computer,
the power supply will return the following message immediately:
The contents consist of the uppercase P and the numeral from 0 to 9.
Further details is described as follows:
Ii.iii<cr> 5 characters totally + CR/LF
i.ii = The maximum current limit at present, the unit: A
Pppp<cr> 4 characters totally + CR/LF
ppp = The maximum load limit at present, the unit: W
When the uppercase P becoming the lowercase p means that the power
supply is in the setting status of output load limit mode.
F
Function:
Syntax:
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The present status of the power supply.
F<cr> HEX = 46 0D
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USER’S MANUAL FA-405
Explain:
When the message of F<cr> is sent to the power supply from computer,
the power supply will return the following message immediately:
Fffffff<cr> 7 characters totally + CR/LF
• • • • • •
123446
The contents consist of the uppercase F and the numeral from 0 to 9.
Further details is described as follows:
st
1
f = the relay status 0:OFF 1:ON
nd
2
f = the temperature status 0: Normal 1: Overheat
rd
3
f = the wheel knob status 0: Normal 1: Fine
th
4
f = the wheel knob status 0: Lock 1: Unlock
th
5
f = the remote status 0: Normal 1: Remote(*)
th
6
f = the lock status 0: Unlock 1: Lock
NOTE: The setting is workable through computer only when the remote is at 1.
SV+
Function:
Syntax:
Explain:
Example:
Add one unit to the present voltage setting.
SV+<cr> HEX = 53 56 2B 0D
When the message of SV+<cr> is sent to the power supply from
computer, the power supply will add one unit to the present voltage
setting immediately.
The present output voltage is at 20.00V, and the wheel knob status is at
normal, the SV+<cr> message is sent to the power supply, the voltage of
which will become 21.00V.
English
SV-
Function:
Syntax:
Explain:
Example:
12/2003 Page 23
Subtract one unit from the present voltage setting.
SV-<cr> HEX = 53 56 2D 0D
When the message of SV-<cr> is sent to the power supply from
computer, the power supply will subtract one unit from the present voltage
setting immediately.
The present output voltage is at 20.00V, and the wheel knob status is at
normal, the SV-<cr> message is sent to the power supply, the voltage of
which will become 19.00V.
Page 27
SU+
USER’S MANUAL. FA-405
SU-
SI+
Function:
Syntax:
Explain:
Example:
Function:
Syntax:
Explain:
Example:
Function:
Add one unit to the present voltage limit setting.
SU+<cr> HEX = 53 55 2B 0D
When the message of SU+<cr> is sent to the power supply from
computer, the power supply will add one unit to the present voltage limit
setting immediately.
The present voltage limit is at 30V, and the wheel knob status is at
normal, the SU+<cr> message is sent to the power supply, the voltage
limit of which will become 31V.
Subtract one unit from the present voltage limit setting.
SU-<cr> HEX = 53 55 2D 0D
When the message of SU-<cr> is sent to the power supply from
computer, the power supply will subtract one unit from the present voltage
limit setting immediately.
The present voltage limit is at 30V, and the wheel knob status is at
normal, the SU-<cr> message is sent to the power supply, the voltage
limit of which will become 29V.
Add one unit to the present current limit setting.
Syntax:
Explain:
Example:
Page 24 12/2003
SI+<cr> HEX = 53 49 2B 0D
When the message of SI+<cr> is sent to the power supply from computer,
the power supply will add one unit to the present current limit setting
immediately.
The present current limit is at 3.00A, and the wheel knob status is at
normal, the SI+<cr> message is sent to the power supply, the current limit
of which will become 3.10A.
Page 28
USER’S MANUAL FA-405
SI-
SP+
SP-
Function:
Syntax:
Explain:
Example:
Function:
Syntax:
Explain:
Example:
Function:
Subtract one unit from the present current limit setting.
SI-<cr> HEX = 53 49 2D 0D
When the message of SI-<cr> is sent to the power supply from computer,
the power supply will subtract one unit from the present current limit
setting immediately.
The present current limit is at 3.00A, and the wheel knob status is at
normal, the SI-<cr> message is sent to the power supply, the current limit
of which will become 2.90A.
Add one unit to the present load limit setting.
SP+<cr> HEX = 53 50 2B 0D
When the message of SP+<cr> is sent to the power supply from
computer, the power supply will add one unit to the present load limit
setting immediately.
The present load limit is at 100W, and the wheel knob status is at normal,
the SP+<cr> message is sent to the power supply, the load limit of which
will become 101W.
Subtract one unit from the present load limit setting.
English
Syntax:
Explain:
Example:
12/2003 Page 25
SP-<cr> HEX = 53 50 2D 0D
When the message of SP-<cr> is sent to the power supply from
computer, the power supply will subtract one unit from the present load
limit setting immediately.
The present load limit is at 100W, and the wheel knob status is at normal,
the SP-<cr> message is sent to the power supply, the load limit of which
will become 099W.
Page 29
SUM
USER’S MANUAL. FA-405
SIM
SMP
Function:
Syntax:
Explain:
Example:
Function:
Syntax:
Explain:
Example:
Function:
Syntax:
Set the maximum voltage limit value.
SUM<cr> HEX = 53 55 4D 0D
When the message of SUM<cr> is sent to the power supply from
computer, the power supply will set the voltage limit to the maximum
immediately.
The present voltage limit is at 20V, the SUM<cr> message is sent to the
power supply, the voltage limit of which will become 40V.
Set the maximum current limit value.
SIM<cr> HEX = 53 49 4D 0D
When the message of SIM<cr> is sent to the power supply from
computer, the power supply will set the current limit to the maximum
immediately.
The present current limit is at 2.50A, the SIM<cr> message is sent to the
power supply, the current limit of which will become 5.00A.
Set the maximum load limit value.
SPM<cr> HEX = 53 50 4D 0D
Explain:
Example:
When the message of SPM<cr> is sent to the power supply from
computer, the power supply will set the load limit to the maximum
immediately.
The present load limit is at 100W, the SPM<cr> message is sent to the
power supply, the load limit of which will become 200W.
KF
Function:
Syntax:
Page 26 12/2003
Set the wheel knob to Fine status.
KF<cr> HEX = 4B 46 0D
Page 30
USER’S MANUAL FA-405
KN
KO
Explain:
Example:
Function:
Syntax:
Explain:
Example:
Function:
Syntax:
Explain:
Example:
When the message of KF<cr> is sent to the power supply from computer,
the power supply will set the wheel knob to Fine status immediately.
The present wheel knob status is at Normal, the KF<cr> message is sent
to the power supply, the wheel knob status will become Fine.
Set the wheel knob to Normal status.
KN<cr> HEX = 4B 4E 0D
When the message of KN<cr> is sent to the power supply from computer,
the power supply will set the wheel knob to Normal status immediately.
The present wheel knob status is at Fine, the KN<cr> message is sent to
the power supply, the wheel knob status will become Normal.
Set the Relay status to Invert.
KO<cr> HEX = 4B 4F 0D
When the message of KO<cr> is sent to the power supply from computer,
the power supply will invert the relay status immediately.
The present relay status is at OFF, the KO<cr> message is sent to the
power supply, the relay status will become ON, send the message again
will become OFF.
English
KOE
Function:
Syntax:
Explain:
12/2003 Page 27
Set the Relay status to ON.
KOE<cr> HEX = 4B 4F 45 0D
When the message of KOE<cr> is sent to the power supply from
computer, whatever the relay status is, the relay of power supply will be
set to ON immediately.
Page 31
KOD
USER’S MANUAL. FA-405
EEP
B
Function:
Syntax:
Explain:
Function:
Syntax:
Explain:
Function:
Syntax:
Explain:
Set the Relay status to OFF.
KOD<cr> HEX = 4B 4F 44 0D
When the message of KOD<cr> is sent to the power supply from
computer, whatever the relay status is, the relay of power supply will be
set to OFF immediately.
Save the present status to the EEPROM.
EEP<cr> HEX = 45 45 50 0D
When the message of EEP<cr> is sent to the power supply from
computer, the power supply will be save the present setting value to
EEPROM immediately.
To obtain +% value.
B<cr> HEX = 42 0D
When the message of B<cr> is sent to the power supply from computer,
the power supply will return the following message immediately
Bbbb<cr> 4 characters totally +CR/LF
The contents consist of the uppercase B, and the numeral from 0 to 9.
Further details is described as follows:
bbb = The present +% value, the unit: %
When the uppercase B becoming the lowercase b means that the status
is in the setting of the +% mode.
D
Function:
Syntax:
Page 28 12/2003
To obtain -% value.
D<cr> HEX = 44 0D
Page 32
USER’S MANUAL FA-405
Q
Explain:
Function:
Syntax:
Explain:
When the message of D<cr> is sent to the power supply from computer,
the power supply will return the following message immediately
Dddd<cr> 4 characters totally +CR/LF
The contents consist of the uppercase D, and the numeral from 0 to 9.
Further details is described as follows:
ddd = The present -% value, the unit: %
When the uppercase D becoming the lowercase d means that the status
is in the setting of the -% mode.
Display the present value at +% or -% mode.
Q<cr> HEX = 51 0D
When the message of Q<cr> is sent to the power supply from computer,
the power supply will return the following message immediately
Qqqqqqq<cr> 7 characters totally +CR/LF
The contents consist of the uppercase B, and the numeral 0 or 1. Further
details is described as follows:
Whether the first q is at -% mode? 0: No 1:Yes
Whether the second q is at +% mode? 0: No 1: Yes
English
SB+
Function:
Syntax:
Explain:
Example:
12/2003 Page 29
To add one unit to the present setting of +%.
SB+<cr> HEX = 53 42 2B 0D
When the message of SB+<cr> is sent to the power supply from
computer, the power supply will add one unit to the present setting of +%
immediately
The present +% value is at 105, after the command is sent from
computer, the +% value is at 106.
Page 33
SB-
USER’S MANUAL. FA-405
SD+
SD-
Function:
Syntax:
Explain:
Example:
Function:
Syntax:
Explain:
Example:
Function:
Syntax:
To decrease one unit from the present setting of +%.
SB-<cr> HEX = 53 42 2D 0D
When the message of SD-<cr> is sent to the power supply from
computer, the power supply will decrease one unit from the present
setting of +% immediately
The present +% value is at 105, after the command is sent from
computer, the +% value is at 104.
To add one unit to the present setting of -%.
SD+<cr> HEX = 53 44 2B 0D
When the message of SD+<cr> is sent to the power supply from
computer, the power supply will add one unit to the present setting of -%
immediately
The present -% value is at 90, after the command is sent from computer,
the -% value is at 91.
To decrease one unit from the present setting of -%.
SD-<cr> HEX = 53 44 2D 0D
Explain:
Example:
When the message of SD-<cr> is sent to the power supply from
computer, the power supply will decrease one unit from the present
setting of -% immediately
The present -% value is at 90, after the command is sent from computer,
the -% value is at 89.
SV
Function:
Syntax:
Page 30 12/2003
Set the output voltage value.
SV xx.xx
x is a number between 0 and 9.
Page 34
USER’S MANUAL FA-405
SU
SI
Explain:
Example:
Function:
Syntax:
Explain:
Example:
Function:
:SI x.xx
Syntax
Explain:
Example:
The power supply will set the desired value of output voltage when the
command is received.
SV 12.34
Set output voltage to 12.34V
Set voltage limit.
SU xx
x is a number between 0 and 9.
The power supply will set desired up-limit value of the voltage when the
command is received.
SU 20
Set voltage limit to 20V
Set current limit.
x is a number between 0 and 9.
The power supply will set desired up-limit value of the current when the
command is received.
SU 1.25
Set current limit to 1.25A
English
SP
Function:
Syntax:
Explain:
Example:
The power setting changes the current limit only, the voltage limit will remain
12/2003 Page 31
Set power limit.
SP xxx
x is a number between 0 and 9.
The power supply will set desired up-limit value of the power when the
command is received.
SP 100
Set power limit to 100W
unchanged.
Page 35
PROMAX ELECTRONICA, S. L.
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