twintex TFC6000 Series User manual

AC Power Supply
TFC6000 Series
Operation Manual V2.0

SAFEFY INSTRUCTION...................................................................................................................................- 2 -
1. KEY POINTS TO INSTALLATION ............................................................................................................- 3 -
1.1 Unpacking and Examination ................................................................................................................- 3 -
1.2 Preparation before Use..........................................................................................................................- 3 -
1.3 Storage and Shipping ............................................................................................................................- 4 -
2. SPECIFICATOINS .........................................................................................................................................- 5 -
2.1 Serial Lineup and Features...................................................................................................................- 5 -
2.2 Specifications..........................................................................................................................................- 6 -
3. OPERATION INSTRUCTIONS..................................................................................................................- 10 -
3.1 Front Panel Description......................................................................................................................- 10 -
3.2 Rear Panel Description........................................................................................................................- 10 -
3.3 Operation Instructions........................................................................................................................- 12 -
3.3.1 Power On................................................................................................................................- 12 -
3.3.2 Voltage Setup .........................................................................................................................- 12 -
3.3.3 Frequency Setup ....................................................................................................................- 12 -
3.3.4 High and Low Voltage Switch ..............................................................................................- 12 -
3.3.5 Current Limit Setup..............................................................................................................- 13 -
3.3.6 P/PF Operation Key ..............................................................................................................- 13 -
3.3.7 OUTPUT/RESET Key..............................................................................................................- 13 -
3.3.8 Memory Key..............................................................................................................................- 13 -
3.3.9 System Parameter Setup ..........................................................................................................- 13 -
3.3.10 Output......................................................................................................................................- 14 -
3.4 Protections............................................................................................................................................- 14 -
3.5 Remote Control....................................................................................................................................- 14 -
4. FAULTS AND TROUBLE SHOOTING.....................................................................................................- 18 -
5. MAITENANCE .............................................................................................................................................- 19 -
5.1 Inspection .............................................................................................................................................- 19 -
5.2 Cleaning................................................................................................................................................- 19 -
5.3 Modification.........................................................................................................................................- 19 -

- 1 -
Use of Operation Manual
Please read through and understand this Operation Manual before operating the product. After
reading, always keep the manual nearby so that you may refer to it as needed. When mobbing the
product to another location, be sure to bring the manual as well.
Calibration notification
We notify that the instruments included in this manual are in compliance with the features and
specifications as stated in this manual. Before shipment, the instrument has been calibrated in
factory. The calibration procedures and standards are compliant to the national regulations and
standards for electronic calibration.
Warranty
We guarantee that the instrument has been passed strict quality check. We warrant our instrument’s
mainframe and accessories in materials within the warranty period of one year. We guarantee the
free replacement or repair of products which are approved defective. To get repair service, please
contact with your nearest sales and service office. We do not provide any other warranty items
except the one being provided by this summary and the warranty statement. The warranty items
include but not being subjected to the hinted guarantee items related to tradable characteristics and
any particular purpose. We will not take any responsibility in cases regarding to indirect, particular
and ensuing damage, such as modifications to the circuit and functions by the users, repairing or
component replacement by the users, or damage during transportation.
For product improvement, the specifications are subject to change without prior notice.

- 2 -
SAFEFY INSTRUCTION
This chapter contains important safety instructions that you must follow when operating the AC
power supply and when keeping it in storage. Read the following before any operation to insure
your safety and to keep the best condition for the instrument.
Safety Symbols
The following safety symbols may appear in this manual or on the instrument:
WARNING Identifies conditions or practices that could result in injury or loss of
life.
CAUTION Identifies conditions or practices that could result in damage to the
instrument or to other properties.
DANGER High voltage
ATTENTION Refer to the manual
Protective conductor terminal
Earth (ground) terminal
Safety Guidelines
CAUTION

Before plugging into local AC mains, check and make sure that the
output voltage is compatible to the load. (It is suggested to disconnect a
load before plugging into local AC mains.
Do not use this instrument near water.
Do not operate or touch this instrument with wet hands.
Do not open the casing of the instrument when it is connected to AC
mains.
Avoid touch the metal contact part of the output terminals.
Do not use the instrument in an atmosphere which contains sulfuric acid
mist or other substances which cause corrosion to metal.
Do not use the instrument in a dusty place or a highly humid place as
such will cause instrument reliability degradation and instrument
failures.
Install the instrument in a place where is free from vibration.

Install the instrument in a place where the ambient temperature is in
range of -20~60℃
. Note that the instrument operation may become
unstable if it is operated in an ambient temperature exceeding the range
of 0~40
℃
Power supply
WARNING
AC Input voltage: 220V (single phase) /380V (three phase) ±10%, 50/60Hz
Connect the protective grounding conductor of the AC power cord to an
earth ground to avoid electrical shock.
Fuse
WARNING
Make sure the correct type of fuse is installed before power up.
Replace the AC fuse with the same type and rating as the original fuse.
Disconnect the power cord before fuse replacement.
Make sure the cause of fuse blowout is fixed before fuse replacement.

- 3 -
1. KEY POINTS TO INSTALLATION
This chapter introduces the rules of product unpacking, examination, preparation of pre-use and
storage.
1.1 Unpacking and Examination
1. Unpack the AC power supply and check the enclosed accessories.
2. The product is sealed in a packing case which is protected by pear brocade. If there are any
damages with the packing case, please check the AC power supply and see if there is any
deformation, scratch or panel damaged.
3. In case of any damage, please inform us or local distributor immediately. Our service center will
maintain it or replace it with a new one. However, please do not return it without a notification
to us or local distributor.
Packing list:
AC power supply: 1 unit
Operation manual: 1 pcs
1.2 Preparation before Use
Input Power
The input power requirements of the instrument are 220V±10% (50Hz±10%) single phase AC or
380V±10% (50Hz±10%) three phase AC. Please use a proper input power before turn on the AC
power supply, and use a fuse with same specification of the original. The fuse specification is
indicated on the rear panel of the power supply.
WARNING
Disconnect the power cord before fuse replacement.
WARNING
Always keep good connection of the grounding wire and make sure to connect
the grounding wire to the earth. The 3-pin power plug of the power supply must
be connected to a socket with grounding wire. To use a longer wire, make sure
it is perfectly grounded to the earth. When the 3-pin power plug of the power
supply is plugged into a socket with grounding wire, the power supply has been
grounded to the earth.
Operation Environment
Location: The installation sites must be away from chemical deposition, explosive material, sulfuric
acid mist or other substances which cause corrosion to metal. The installation site shall always keep
lean and dry, and free from dusty, high humidity and vibration.
Relative Humidity: < 80%
Altitude: < 2000m
Temperature: 0 ℃ to 40℃

- 4 -
1.3 Storage and Shipping
Environment
Location: The storage sites and transportation environment must be away from chemical deposition,
explosive material, sulfuric acid mist or other substances which cause corrosion to metal. The
installation site shall always keep lean and dry, and free from dusty, high humidity and vibration.
Relative Humidity: < 80%
Altitude: <7620m
Temperature: -20 ℃ to 55℃
The power supply must avoid extreme temperature change, because drastic temperature change will
cause vapor condensation inside the power supply.
Packing
Original Packing
Please keep all the original packing materials and pack the power supply if it must be sent back to
us for repairing. And contact our service center before returning. All the accessories included with
the power supply must be returned along with the power supply, and demonstrate the damage or
malfunction. In addition, please mark the package with a label indicating FRAGILE AND
HANDLE WITH CARE.
Other Packing
If the original packing materials are not found, please follow the following instructions to pack the
power supply:
1. Pack the power supply with bubble plastic bag or pearl brocade.
2. Put it into a multi-layer carton which can withstand a weight of 150kg.
3. Use shockproof materials to filled around the power supply with thickness of 70~100mm.
4. Seal the carton properly.
5. Marked the carton with a label indicating FRAGILE AND HANDLE WITH CARE.

- 5 -
2. SPECIFICATOINS
2.1 Serial Lineup and Features
Main Features
Performance Adopts Direct Digital
Synthesis (DDS) technology, good waveform, high
stability frequency, good continuity
Adopts half sine wave current and similar D component waveform test, high
measuring accuracy
Embedded intelligent PC control system
Operation Full range adjustable output: 0~150V, 0~300V, step 0.1V
Output frequency 45~120Hz (40~500Hz optional), step 0.1Hz
Setting output current limit function
3 groups front panel setting save & recall
RS232 interface (optional)

LED display for RMS voltage, current active power, frequency, and power
factor
Regulator response time less than 2ms for 100% load and unload
Great overload capability, instantaneous current can withstand 3 times of the
rated current
Software startup, good for inductive load, such as motor start, transformer
Protection
Over voltage, over current, over load, short circuit and current limit protections
Interface
RS232 (optional) for remote PC control
Applications Automotive test system
Best power source for R&D
Electronic/electrical products test
Switching power supply and transformer test
Compressor and motor test
Monitor test
Air-conditioning equipments test
Fluorescent rectifier test
Factory use for QC, life test, etc.

400Hz switching power supply for military, airport and navigation systems,
supercomputer, etc.

- 6 -
2.2 Specifications
1-Phase Output
Model
6000
6000R
6001
6001R
6003
6003R
6005
6005R
6010
6010R
6015
6015R
6020
6020R
Capacity
500VA 1KVA 3KVA 5KVA 10KVA 15KVA 20KVA
Operation mode
SPWM
INPUT
Phase
1φ2W 3φ4W
Voltage
220V±10% 380V±10%
Frequency
47Hz - 63Hz
OUTPUT
Phase
1φ2W
Voltage
0-150VAC / 0-300VAC AUTO
Frequency
45-120Hz (0.1Step)
Max
.cur
rent
L=120V 4.2A 8.4A 25A 42A 84A 125A 168A
H=240V 2.1A 4.2A 12.5A 21A 42A 62.5A 84A
Load
regulation 1%
T.H.D
2% (Low range 120V, high range 204V, pure resistive load)
Fre
quency regulation 0.01%
LED di
splay Vrms, Arms, Fre, Wattage, PF
Voltage
resolution 0.1V
Fre
quency resolution 0.1Hz
Current
resolution 0.001A 0.01A 0.1A
Memory
M1 (V_F_A), M2 (V_F_A), M3 (V_F_A)
Interface
RS232C (optional)
Current limit setup
O-Max Current
Protection
Over Current, Over Temperature, Over Load and Short Circuit protections
Weight (Kg)
15
20
30
50
80
120
150
Dimension
W×H×D(mm)
430×133×370 430×222×540 430×670×540
Working environment
0-40
℃
20-80%RH

- 7 -
1-Phase Output
Model
6030
6030R
6050
6050R
6100
6100R
6150
6150R
Capacity
30KVA 50KVA 100KVA 150KVA
Operation mode
SPWM
INPUT
Phase
3φ4W
Voltage
380V±10%
Frequency
47Hz - 63Hz
OUTPUT
Phase
1φ2W
Vol
tage 0-150VAC / 0-300VAC AUTO
Frequency
45-120Hz (0.1Step)
Max
.curr
ent
L=120V
250A 420A 840A 1250A
H=240V
125A 210A 420A 625A
Load
regulation 1%
T.H.D
2% (Low range 120V, high range 204V, pure resistive load)
Fre
quency regulation 0.01%
LED di
splay Vrms, Arms, Fre, Wattage, PF
Voltage
resolution 0.1V
Fre
quency resolution 0.1Hz
Current
resolution 0.1A 1A
Memory
M1 (V_F_A), M2 (V_F_A), 3 (V_F_A)
Interface
RS232C (optional)
Current limit setup
O-Max Current
Protection
Over Current, Over Temperature, Over Load and Short Circuit protections
Weight (Kg)
250 400 600 800
Dimension
W×H×D(mm)
700×930×1050 700×1200×1400
Working
environment
0-40℃20-80%RH

- 8 -
3 Phase Output
Model
6006T
6006TR
6009T
6009TR
6012T
6012TR
6015T
6015TR
6020T
6020TR
Capacity
6KVA 9KVA 12KVA 15KVA 20KVA
Operation mode
SPWM
INPUT
Phase
1φ2W 3φ4W
Voltage
220V±10% 380V±10%
Frequency
47Hz - 63Hz
OUTPUT
Phase
3φ4W
Voltage
0-150VAC / 0-300VAC AUTO
Frequency
45-120Hz (0.1Step)
Max
.curr
ent
L=120V 16.8A 25A 33A 42A 56A
H=240V 8.4A 12.5A 17A 21A 28A
Load
regulation 1%
T.H.D
2% (Low range 120V, high range 204V, pure resistive load)
Fre
quency regulation 0.01%
LED di
splay Vrms, Arms, Fre, Wattage, PF
Voltage
resolution 0.1V
Fre
quency resolution 0.1Hz
Current
resolution 0.01A
Memory
M1 (V_F_A), M2 (V_F_A), M3 (V_F_A)
Interface
RS232C (optional)
Current limit setup
O-Max Current
Protection
Over Current, Over Temperature, Over Load and Short Circuit protections
Weight (Kg)
75 90 120 150 200
Dimension
W×H×D(mm)
430×667×540
Working
environment
0-40℃20-80%RH

- 9 -
3 Phase Output
Model
6030T
6030TR
6060T
6060TR
6100T
6100TR
6150T
6150TR
6300T
6300TR
6200T
6200TR
6450T
6450TR
Capacity
30KVA 60KVA 100KVA 150KVA 300KVA 200KVA 450KVA
Operation mode
SPWM
INPUT
Phase
3φ4W
Voltage
380V±10%
Frequency
47Hz - 63Hz
OUTPUT
Phase
3φ4W
Voltage
0-150VAC / 0-300VAC AUTO
Frequency
45-120Hz(0.1Step)
Max.curre
nt
L=120V 84A 168A 278A 420A 840A 556A 1250A
H=240V
42A 84A 139A 210A 420A 278A 625A
Load regulation
1%
T.H.D
2% (Low range 120V, high range 204V, pure resistive load)
Frequency regulation
0.01%
LED display
Vrms, Arms, Fre, Wattage, PF
Voltage
resolution 0.1V
Frequency
resolution
0.1Hz
Current
resolution 0.01A 0.1A 1A
Memory
M1 (V_F_A), M2 (V_F_A), M3 (V_F_A)
Interface
RS232C (optional)
Current limit setup
O-Max Current
Protection
Over Current, Over Temperature, Over Load and Short Circuit protections
Weight (Kg)
300 500 900 1200 1600 2000 3000
Dimension
W×H×D(mm)
700×930×10
50
700×1200×1400 900×1580×1610 1000×1500×
1800
Working
environment
0-40℃20-80%RH
For the purpose of product improvement, specifications are subject to change without prior notice.

- 10 -
3. OPERATION INSTRUCTIONS
3.1 Front Panel Description
1
Voltmeter with RMS value
2
Frequency meter
3
Ammeter with RMS value
4
Power/power factor meter
5
Input switch
6
RS232 interface for PC control
7
Output socket
8
Operating keys
3.2 Rear Panel Description
Wiring description for 1 Phase AC power supply ()
1
Output connector bar: L-live wire, N-null wire, G-grounding wire
2
Input connector bar: L-live wire, N-null wire, G-grounding wire

- 11 -
Wiring description for 3 Phase AC power supply (30KVA~450KVA)
1
Non-fuse output switch
2
Non-fuse input switch
3
Output connector bar: U-U phase, V-V phase, W-W phase, N-null wire, PE-protective earth
wire
4 Input connector bar: L1-L1phase, L2-L2phase, L3-L3phase, N-null wire, PE-protective earth
wire
5
G-grounding wire

- 12 -
3.3 Operation Instructions
WARNING

Before connecting to local AC mains check and make sure to use
correct AC power to the power supply.
Connect the protective grounding conductor of the AC power cord to an
earth ground to avoid electrical shock.

Switch off all switches.
3.3.1 Power On
Press the POWER button to turn on the power supply, the LED display will display model number
and version. And the CPU will recall the last panel settings, because the panel settings have been
memorized into the EEPROM each time after power off.
3.3.2 Voltage Setup
In standby mode or output mode, press VSET button to go to voltage setup mode. Press key “︿” or
“﹀” to adjust the voltage value.
In output mode, the low range voltage can be set at any value between 0V to 150V, and the high
range voltage can be set at any value between 0V to 300V. If the desired output voltage is over the
low range, first switch to high range and set the desired voltage.
Press key “︿” or “﹀” and hold, the digits will be cleared to “0” from right to left, starting from the
decimal digit. Keep holding the key “︿” or “﹀”, the voltage value will increase or decrease step
by step in very duration of 0.3 second. Each step is 0.1V. After the decimal digit reaches full value,
it will automatically go to the next digit at same step. When it goes to the hundreds digit, the step
speed is 1 step in every 0.1 second.
If the voltage setup has no operation within 2 seconds, the voltmeter will flash and the voltage setup
will be memorized. The meter will display the new voltage value and exit voltage setup mode.
3.3.3 Frequency Setup
In standby mode or output mode, press FSET button to go to frequency setup mode. Press key “︿”
or “﹀” to adjust the frequency value.
The frequency value can be set at any value between 40Hz to 120Hz. If the optional part 40~500Hz
is selected, the frequency value can be set at up to 500Hz. Between 45Hz to 99.9Hz, the fine
adjustment step is 0.1Hz/step and the coarse adjustment step is 1Hz/step. Between 100Hz to 500Hz,
the fine adjustment step is 1Hz/step and the coarse adjustment step is 10Hz/step. Other settings
apply the same as voltage setup.
3.3.4 High and Low Voltage Switch
The output voltage has two ranges: high range and low range. In low range, the rated output current

- 13 -
is high. In high range, the rated output current is half of the rated output current in low range. (Refer
to specifications in section 2.2). Switching between high and low range dose not have any influence
to the voltage setup. However, when in output mode, switching between high and low ranges will
cause an instant power off for minimum 20mS. Improper switching will not be accepted by the
CPU, such as 300V as low range.
3.3.5 Current Limit Setup
In standby mode or output mode, press ASET button to go to current limit setup mode. Press key
“︿” or “﹀” once to display the last preset current limit value. Press “︿” or “﹀” once more to
adjust the current limit value.
If there is no any operation to set the current limit value within 2 seconds, it will automatically
return to the last preset current limit value.
When the output current exceeds the preset current limit value, the output will be shut off and the
OUTPUT/RESET LED indicator will blink.
3.3.6 P/PF Operation Key
Press key P/PF at any time to switch the display for power and power factor.
3.3.7 OUTPUT/RESET Key
The OUTPUT/RESET key can turn on or off the output. The OUTPUT/RESET LED indicator
lights on when the output is ON. When there is abnormal output, the output will be automatically
turned off and the OUTPUT/RESET LED indicator will blink. The beeper alarms at the same time.
Press this button once to turn off the beeper. Press it twice to reset the output. Press it for the third
time to restart output.
3.3.8 Memory Key
The AC power supply has 3 memory groups for panel setting save & recall – M1, M2 and M3. The
panel setting can be stored to any one of the memory groups and be recalled from this memory
group. After finish panel setting, press the memory key M1, M2 or M3 for at least 1 second, the
panel settings will be stored to the selected memory group. To recall the stored panel setting, press
the memory key M1, M2 or M3 once.
3.3.9 System Setup
Press key SYSTEM to go to the system setup mode. In this mode, the BPS LED indicator lights on.
The system parameters are displayed on voltmeter and frequency meter. Press key “︿” or “﹀” to
select system parameters.
Press key “︿”to the baud rate setup and cycle the parameters as: 4.8, 9.6, 19.2 and the ADDR LED
indicator lights. And the parameters are display on voltmeter and frequency meter.

- 14 -
There are maximum 30 programming sets for parameter setup. Press key “﹀” again to cycle the
parameter sets as: 01, 02, 03, …28, 29, 30.
3.3.10 Output
When the panel setting is finished, connect the load to the output terminal, and turn on the POWER
switch to make output.
3.4 Protections
The power supply has been designed with over voltage, over current, over load, short circuit and
current limit protections. In case of over voltage, over current, over load, short circuit or current
exceeding preset current limit, the protection circuits immediately start up and make protections.
The output will be cut off; beeper alarms and LED alarm indicator lights. In this situation, first turn
off the output by pressing the POWER switch. Next check and clarify reasons of alarming. For
example, if there is over load, reduce load capacity and reset. The power supply will return to
normal operation mode.
In case of over load or short circuit, do not press RESET key right after the alarm to reset the
settings, because this operation will have impact in the power supply machine life. The correct
operation is to turn off the output and press key RESET to reset the settings. Before restart the
power supply, check and make sure the load is in good condition.
3.5 Remote Control
TFC6000R series are installed with RS232 interface.
The RS232 interface is the most commonly used interface for instruments. Its hardware is a D type
9-pin connector. The pin definition is as below:
2 – TXD 3 – RXD 5 – GND
AC POWER SUPPLY COMPUTER

- 15 -
RS232 Baud Rate Setup (RS232 BPS)
Press key “︿” or “﹀” to go to baud rate setup. Each press makes a new baud rate, which takes
turns as: 4.8, 9.6, 19.2…….
Address Setup (ADDR)
In standby mode, press key “︿” or “﹀” to go to address setup. Each press makes a new address,
which take turns as: 1, 2, 3, 4…….30.
3.6 RS232 Commands
3.6.1 Data Format from PC to AC power supply
Equipment ID (1 byte)+command code (1 byte)+operation code (1 byte)+data (4 byte)+check code
(1byte)
Equipment ID
1-28
AC power supply ID
Command
code
ASCII
HEX
’R’
0x52
Read data
’W’
0x57
Write data
’X’
0x58
Software reset
Operation code
Refer to section 3
Action object
Data
Low byte in the front, high byte
in the end
Write command: data written into AC power
supply
Read command: send back data to PC
Reset command: ignored
Check code
The add-up of the first 7 bytes
NOTE: After receiving the software RESET code, the AC power supply will not send back any
response code.
3.6.2 Data format from AC power supply to PC
Equipment ID (1 byte)+command code (1 byte)+operation code (1 byte)+data (4 byte)+check code
(1byte)
Equipment ID
1-28
AC power supply ID
Command code
ASCII
HEX
’R’
0x52
Read data
’W’
0x57
Write data
Operation code
Refer to section 3
Action object
Data
Low byte in the front, high byte
in the end
Data sent back in 4 bytes
Check code
The add-up of the first 7 bytes

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3.6.3 Operation Instructions
Code
Function
Data and description
Meaning of
read-back data
Meaning of write-in data
0x30
Output
status
Byte: 0
Current
overload or not
1: Current overload
0: Normal
0: Clear current overload
indication
Byte: 1
Malfunctioning
alarm
1: Malfunctioning
0: Normal
1: Reset to clear alarm
indication
Byte: 2
In high range
or low range
1: High range
0: Low range
Ignored
Byte: 3
Output status
1: Output ON
0: No output
Ignored
0x31
Desired
frequency
The frequency value
format is 4 bytes, unit
0.1Hz, range 450-1200
The current
frequency value
The refreshed frequency
value
0x32
Desired
voltage in
high
range
The voltage value format
is 4 bytes, unit 0.1V,
range 0-3000
The current voltage
value
The refreshed voltage value.
If it is in low range, it will
automatically change to high
range.
0x33
Desired
voltage in
auto
range
The voltage value format
is 4 bytes, unit 0.1V,
range 0-3000
The current voltage
value
The refreshed voltage value.
According to the current
voltage value, it will
automatically switch between
high range and low range. If
the voltage value is set at
1500 or above, it switches to
high range. Otherwise, it
switches to low range.
0x34
Maximum
output
current
The maximum output
current value format is 4
bytes, unit 0.001A, range
30000 or below.
Current threshold
Current threshold
0x35
Control
output
Output status format is 4
bytes. (effective
operation)
1: Output ON
0: No output
Enable output
0x36
Control
output
Output status format is 4
bytes.
(effective operation)
1: Output ON
0: No output
Disable output
0x4A
Serial
number
Serial number format is
4 bytes
Serial number
Not writable
0x60
Irms
The current rms value
format is 4 bytes, unit
0.001A.
Current rms value
Not writable
0x61
Vrms
The voltage rms value
format is 4 bytes, unit
0.1V.
Voltage rms value
Not writable

- 17 -
Code
Function
Data and description
Meaning of
read-back data
Meaning of write-in data
0x62
Ipeak
The current peak value
format is 4 bytes, unit
0.001A.
Current peak value
Not writable
0x63
Vpeak
The voltage peak value
format is 4 bytes, unit
0.1V.
Voltage peak value
Not writable
0x64
Pva
The apparent power
value format is 4 bytes,
unit 0.1VA.
Apparent power
value
Not writable
0x65
Pw
The active power value
format is 4 bytes, unit
0.1W.
Active power value
Not writable
0x66
Pf
The power factor value
format is 4 bytes, unit
0.001.
Power factor value
Not writable
0x67
Freq
The frequency value
format is 4 bytes, unit
0.1Hz
Tested frequency
value
Not writable
3.6.4 Examples
Assume ID as 0x01. The following is in 16 binary.
1) Set auto range voltage at 120V:
Successful response:
01 57 33 B0 04 00 00 3F
01 57 33 B0 04 00 00 3F
2) Set auto range voltage at 240V:
Successful response:
01 57 33 60 09 00 00 F4
01 57 33 60 09 00 00 F4
3) Set high range voltage at 120V:
Successful response:
01 57 32 B0 04 00 00 3E
01 57 32 B0 04 00 00 3E
4) Set high range voltage at 240V:
Successful response:
01 57 32 60 09 00 00 F3
01 57 32 60 09 00 00 F3
5) Set frequency at 60Hz:
Successful response:
01 57 31 58 02 00 00 E3
01 57 31 58 02 00 00 E3
6) Set output ON:
Successful response:
01 57 35 00 00 00 00 8D
01 57 35 01 00 00 00 8E
7) Set output OFF:
Successful response:
01 57 36 00 00 00 00 8E
01 57 36 00 00 00 00 8D
8) Clear malfunctioning:
Successful response:
01 57 30 00 01 00 00 89
01 57 30 00 00 00 00 88
3.6.5 Remarks
1) It must firstly send data (voltage) and (frequency), next send data (ON). The AC power supply
will output immediately. During output, the AC power supply responses immediately to the data
which is sent to it.

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2) Send data (OFF), the AC power supply turns off output.
3) If the output is short-circuit or malfunctioning, send data (CLEAR) to clear malfunctioning and
to turn off output.
4. FAULTS AND TROUBLE SHOOTING
Fault
No output, all panel indicators are out
Causes
No power supply input
Clear a) Check if the power switch is turned on.
b) Check if the fuse is blowout
c) Check if the power supply is correctly plugged to local AC mains, or if electricity is
out.
Fault
No voltage output, frequency meter is good, voltmeter displays “0’ and beeper alarms
Causes Over load or abnormal load
Load with over starting current
Clear
Turn off the POWER switch, press key RESET to reset the setting. Reduce load capacity.
Fault
Remote control port failure
Causes a) The remote control address, baud rate are different from the settings on the PC
b) Connector or wire problem. In this case, disconnect the instrument from the PC
c) L loose contact or jamming.
Clear a)
Make the remote control address and baud rate the same on the PC and the
instrument.
b) Test the signal wire between the instrument and the PC. The TXD to GND terminal
should have a voltage of -8V to -12V.
c)
The receiving data may have problems, even if the remote control port works
properly. This may be due to loose contact between the port and the cable connector.
It can also be caused by jamming from the operating environment. In this case, make
well connect of the port and the cable connector. Also, use a shielding wire and make
the shielding wire grounded to earth.
If the faults cannot be cleared, please notify our service center or local distributor.