Manual LPS304
Manual_LPS304
Manual_LPS304
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LPS Series
Linear Power Supplies
OPERATION MANUAL
/METER INTERNATIONAL CORP.
6 Floor, No. 59, Tsao-Dih Woei,
Wan Shun Liao, Shen Keng Hsiang,
Taipei Hsien, Taiwan, R.O.C.
Tel: 886-2-662-5093 ~5 886-2-662-5194 ~6
Fax: 886-2-662-5097
l
CONTENTS
ONE:
1.1
1.2
1.3
1.4
1.5
Two:
2.1
2.2
2.3
GENERAL INFORMATION
Introduction
Safety considerations
Accessories
Output Isolation
Specifications
GETTING STARTED
Fromt Panel Controls And Output Terminals
LCD Display
How To Set Voltage/Current
THREE: OPERATING CHARACTERISTICS AND CONFIGUATIONS
3.1
3.2
3.3
3.4
3.5
3.6
3.7
Introduction
Operating Ranges
Load Consideration Connecting Multiple Loads
Parallel Connection Operation
Series Connection Operation
Tracking Operation (LPS-304)
Range Operation (LPS-30 l/302)
FOUR: USER MAINTENANCE/SERVICE
4.1
4.2
FIVE:
Fuse Replacement
In Case Of Difficulties
USING THE RS-232-C SERIAL INTERFACE
1. GENERAL INFORMATION
1.1 Introduction
This section contains a general description of your power supply as well as its performance specifications.
Information about options and accessories are also provided.
1.2 Safety Considerations
DO NOT EXCEED INPUT RATINGS
This instrument must be connected to a properly grounded receptacle to minimize electric shock hazard.
Operation at line voltages or frequencies in excess of those stated on the data plate may cause leakage
currents in excess of 5.0mA peak.
SAFETY SYMBOLS
WARNING
The WARNING sign denotes a hazard. It calls attention to a procedure, practice,
or the like, which, if not correctly performed or adhered to, could result in
personal injury. Do not proceed beyond a WARNING sign until the indicated
conditions are fully understood and met
CAUTION A
The CAUTION sign denotes a hazard. It calls attention to a procedure, practice,
or the like, which, if not correctly performed or adhered to, could result in
damage to or destruction of part or all of the product.. Do not proceed beyond a
CAUTION sign until the indicated conditions are fully understood and met
1.3 Accessories
Power cable
Operation manual
Fuse
1.4 Output Isolation
The output of the power supply is isolated from earth ground. Either output terminal may be grounded or
the output may floated up to +/- 240 Vdc (including output voltage) from chassis ground
1.5 Specifications
Model
LPS-302
LPS-303
LPS-304
30W
60W
90W
70W
Single
Single
Single
Triple
LPS301
MAX. OUTPUT POWER
OUTPUTS
t OUTPUT VOLTAGE
Output
I
Voltage
Peak Output Voltage
Setting Resolution
OUTPUT CURRENT
Output Current
Peak Output Current
Setting
Resolution
30V/15V
30V/15V
32V/16V
32V/16V
3ov
10mV
10mV
10mV
+/-30V
5V
+/-32V
10mV
2A/1A
4A/2A
2.5A
1A
2.4A/l.2A
4.4A/2.2A
3A
1.2A
1mA
1mA
ImA
1mA
1mV
1mV
1mV
2A
4
,
CONSTANT VOLTAGE CHARACTERISTICS (at rated output)
Line Regulation ( 0% AC)
1mV
Load Regulation (100% load change)
5mV
2mV
2mV
2mV
2mV
10mV
Ripple/Noise rms (1 0Hz to 20MHz)
1mV rms
1mV rms
1mV rms
1mV rms
2mV rms
Ripple/Noise peak (1 0Hz to 20MHz)
1 0mV p-p
10mV p-p
1 0mV p-p
10mV p-p
1 0mV p-p
Transient
Response
30ms
Temperature Coefficient
I
100ppm/“c
CONSTANT CURRENT CHARACTERISTICS (at rated output)
I
Line Regulation ( 0% AC)
2mA
2mA
2mA
2mA
Load Regulation (100% load change)
5mA
5mA
5mA
5mA
Ripple/Noise rms (1 0Hz to 20MHz)
1mA rms
1mA rms
1mA rms
1
Ripple/Noise peak (1 0Hz to 20MHz)
5mA P-P
5mA P-P
5mA p-p
5mA P-P
Temperature Coefficient
200ppm/C
I
OTHER
I
Display
16 character x 2 line backlit LCD
Voltage Accuracy *
Current Accuracy *
Common Mode Voltage
Temperature
Range
Dimensions (WxHxL)
Weight
Cooling
40Vdc
Operating: O’C to 40°C , less than 80% RH; Storage: -45°C to 75°C , less than
80% RH
8.7”x 3.4”x
8.7”x 3.4”x
8.7”x 3.4”x
8.7”x 3.4”x 11.8”
11.8”
11.8”
11.8”
12 lbs
10 lbs
12 lbs
12 lbs
Forced Air
*For output less than 5% of rated output, add 5 digits to the accuracy specification
RS232 Interface: (optional)
1. RS232C DCE interface: 9 pin D-SUB connector
2. Port configuration: asynchronous 2400 baud, 8 data bits, 1 stop bits, no parity
NOTE:
1. All RS232 command are case-nonsensitivity ASCII codes.
2. Use async framing 8 data bits, no parity bit , l stop bit.
3. Bit rate=2400bps
4. Every command string is terminated by CR or LF or BOTH (carriage return)
5. There is one command allowable in a command string
6. A command string enter before “OK” prompt will be reject & no function
7. STATUS opratin explanation:
After a LPS accept A “STAUS” command, it will display a decimal number in ASCII
Convert this decimal number to binary form. each bit indicate a action/status:
bit
0:
channel 1
o=cv
l=CC
bit
1:
channel 2
o=cv
l=CC
bit
3,2:
bit
4:
0 : digital output off
1: digital output on
bit
5:
0: digtal output 5V
l:digital output 3.3V
bit
6:
0O: independent
10: tracking to channel 1
2
11 : tracking to channel
O: output off
1: output on
bit
7:
0=nothing
1 =digital output overload
bit
8:
O=fanoff 1=fan on
bit
9: O=beeper function disbale
l=beeper function enable
bit
10: 0=CC output compensated off
l=CC output compensated on
Calibration
For
LPS
301-304
Equipment needed for calibration: DMM,
such as Fluke model 46 or HP 3479A
----
Step
1: Simultaneously
calibration
Setp
2:
Sept 3 :
press
( -v-/-1- ;
. \ -s-w /
and
i
v
i
\- - - - /
keys to
enter
mode.
Measure the DC voltage from the positive channel output terminals
(+ and COMl) with DMM, and then use the arrow keys to enter the
measured value as the +V Lo,
Repeat step 2. Enter the measured value as +V
Hi.
Sept
4: Measure the DC current from positive channel output terminals
the DMM and enter the measured current value as +I Lo.
Sept
5: Repeat
step
4. Enter the measured value as +I Hi.
(For LPS-304
Only)
Sept 6: Measure the DC voltage from negative channel output terminals
COMl) with the DMM, and enter the measured value as -V Lo.
step
Sept
7: Repeat
Sept
8: Measure the DC current from negative channel output terminals
the DMM and enter the measured current value as -1 Lo.
Sept
9: Repeat step.
completed.'
NOTE: If Error #0002
with
6. Enter the measured value- as -V
Hi.-------
(-
a;
--with
8. Enter the measured value as -1 Hi. Calibration is
appear on the LCD after inputting
ca1ibration
parameter
please make sure all the calibration parameters are correct-and the
re-enter them again.
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