Cosel LGA100A User manual

3 Temperature Measurement Point LGA-17
5 Ground LGA-19
2Series Operation and Parallel Operation LGA-16
1 Function LGA-16
1.1 Input voltage range LGA-16
1.2 Inrush current limiting LGA-16
1.3 Overcurrent protection LGA-16
1.4 Overvoltage protection LGA-16
1.5 Output voltage adjustment range LGA-16
1.6 Isolation LGA-16
6.1 Outline of options LGA-19
6.2 Others LGA-21
6 Option and Others LGA-19
4 Life expectancy and warranty LGA-18
AC-DC Power Supplies Open Frame/ Enclosed Type
Instruction Manual
LGA-15
June 26, 2020

1.1 Input voltage range
¡The range is from AC85V to AC132V.
¡AC input voltage must have a range from AC85V to AC132V for
normal operation. If the wrong input is applied, the unit will not op-
erate properly and/or may be damaged.
¡In cases that conform with safety standard, input voltage range is
AC100-AC120V(50/60Hz).
1.2 Inrush current limiting
¡Inrush current limiting is built-in.
¡If a switch is being used for input, ensure that it is congured to
handle the input inrush current.
¿ LGA50A, LGA75A
¡If the unit is shut down, recycling AC line has to be done after
cooling down the unit since thermistor is used for the protection
from the inrush current.
¿ LGA100A, LGA150A, LGA240A
¡The SCR is used for protection from inrush current. When power
is turned ON/OFF repeatedly within a short period of time, it is
necessary to have enough time between power ON and OFF to
operate resistance circuit for inrush current.
1.3 Overcurrent protection
¡Overcurrent protection is built-in and comes into effect over
105%(-H is 101% or more of the peak current) of the rated cur-
rent. Overcurrent protection prevents the unit from short circuit
and overcurrent condition of less than 15 seconds. The unit auto-
matically recovers when the fault condition is cleared.
¿
LGA50A-3R3-Y, LGA50A-5, LGA75A-3R3-Y,
LGA75A-5, LGA100A-3R3-Y, LGA100A-5-Y,
LGA150A-3R3-Y, LGA150A-5-Y
¡Hiccup current characteristics.
¡When the output voltage drops at overcurrent, the average output
current is reduced by hiccup operation of power supply.
1.4 Overvoltage protection
¡An overvoltage protection circuit is built-in. The AC input should
be shut down if overvoltage protection is in operation. The mini-
mum interval of AC recycling for recovery is 1.5 minutes (LGA240A
is 3minutes).
*The recovery time varies depending on input voltage.
¡Series operation is available by connecting the outputs of two or
more power supplies with the same output voltage, as shown be-
low. Output current in series connection should be lower than the
lowest rated current in each unit.
¡Parallel operation is not possible.
¡Redundancy operation is available by wiring as shown below.
¡Even a slight difference in output voltage can affect the balance
between the values of I1and I2.
Please make sure that the value of I3does not exceed the rated
current of a power supply.
I3[the rated current value
1 Function Remarks:
Please avoid applying the over-rated voltage to the output termi-
nal. Power supply may operate incorrectly or fail.In case of oper-
ating a motor etc. , please install an external diode on the output
terminal to protect the unit.
1.5 Output voltage adjustment range
¡Adjustment of output voltage is possible by using potentiometer.
Please refer to instruction manual 6.1.
¡Option ”-Y” is recommended which can adjust the output voltatge.
1.6 Isolation
¡For a receiving inspection, such as Hi-Pot test, gradually increase
(decrease) the voltage for the start (shut down). Avoid using Hi-
Pot tester with the timer because it may generate voltage a few
times higher than the applied voltage, at ON/OFF of a timer.
2 Series Operation and
Parallel Operation
AC-DC Power Supplies Open Frame/ Enclosed Type
Instruction Manual
I2
I1I3
-
+
+
-
Load
Power
Supply
Power
Supply
Load
(a)(b)
Load Load
Power
Supply
+
-
Power
Supply
+
-
Power
Supply
+
-
+
-
Power
Supply
Fig.2.1 Examples of connecting in series operation
Fig.2.2 Example of redundancy operation
LGA-16 June 26, 2020

3 Temperature
Measurement Point
¡The guideline for air cooling
It shows the upper temperatures of Point A and B on Table 3.1 to
Table 3.6.
Please take care to keep those temperatures below the points of
the tables by air convection.
And please be attentive to keep that the entire power supply is
well ventilated.
At the upper temperatures of Point A and Point B (refer to External
View) on Table 3.1 to Table 3.6, the expectancy life is 3 years or more.
In case of with Chassis and Cover, please contact our sales ofce
for getting more information.
Remarks:
*Please be careful of electric shock or earth leakage in case of
temperature measurement, because Point A and Point B is live
potential.
*Please refer to 4 if you want to extend the longevity of the ex-
pectancy life.
Table 3.1 Temperatures of Point A, Point B LGA50A-3R3-Y, -5, -12, -15
Mounting
Method
Cooling
Method Load factor Max temperature
Point A[C] Point B[C]
A Convection
70%<Io[100% 85 80
Io[70% 84 80
B
Convection
20%<Io[100% 76 81
Io[20% 72 74
C
Convection
20%<Io[100% 68 68
Io[20% 65 65
D
Convection
20%<Io[100% 84 72
Io[20% 76 61
E
Convection
60%<Io[100% 66 71
Io[60% 61 70
A,B,C,D,E,F Forced air 70%<Io[100% 85 80
Io[70% 80 75
Table 3.2 Temperatures of Point A, Point B
LGA50A-24, -48
Mounting
Method
Cooling
Method Load factor Max temperature
Point A[C] Point B[C]
A Convection
60%<Io[100% 83 62
Io[60% 82 71
B
Convection
60%<Io[100% 76 62
Io[60% 82 75
C
Convection
60%<Io[100% 71 55
Io[60% 80 69
D
Convection
60%<Io[100% 82 55
Io[60% 85 69
E
Convection
60%<Io[100% 77 67
Io[60% 82 80
A,B,C,D,E,F Forced air 70%<Io[100% 85 80
Io[70% 80 75
Table 3.3 Temperatures of Point A, Point B
LGA75A-O
Mounting
Method
Cooling
Method Load factor Max temperature
Point A[C] Point B[C]
A Convection
70%<Io[100% 83 78
Io[70% 87 78
B
Convection
50%<Io[100% 64 66
Io[50% 74 70
C
Convection
50%<Io[100% 67 74
Io[50% 76 76
D
Convection
50%<Io[100% 81 68
Io[50% 85 73
E
Convection
40%<Io[100% 66 77
Io[40% 75 81
A,B,C,D,E,F Forced air 70%<Io[100% 85 80
Io[70% 80 75
Table 3.4 Temperatures of Point A, Point B
LGA100A-O
Mounting
Method
Cooling
Method Load factor Max temperature
Point A[C] Point B[C]
A Convection
70%<Io[100% 85 80
Io[70% 80 78
B
Convection
50%<Io[100% 77 74
Io[50% 75 70
C
Convection
40%<Io[100% 76 76
Io[40% 72 72
D
Convection
20%<Io[100% 84 68
Io[20% 76 65
E
Convection
40%<Io[100% 78 78
Io[40% 72 75
A,B,C,D,E,F Forced air 70%<Io[100% 85 80
Io[70% 80 75
Table 3.5 Temperatures of Point A, Point B
LGA150A-O
Mounting
Method
Cooling
Method Load factor Max temperature
Point A[C] Point B[C]
A Convection
60%<Io[100% 83 80
Io[60% 82 78
B
Convection
40%<Io[100% 81 74
Io[40% 77 72
C
Convection
40%<Io[100% 77 79
Io[40% 77 74
D
Convection
20%<Io[100% 85 70
Io[20% 77 65
E
Convection
20%<Io[100% 77 79
Io[20% 68 70
A,B,C,D,E,F Forced air 70%<Io[100% 85 80
Io[70% 80 75
AC-DC Power Supplies Open Frame/ Enclosed Type
Instruction Manual
LGA-17
June 26, 2020

Table 3.6 Temperatures of Point A, Point B LGA240A-O
Mounting
Method
Cooling
Method Load factor Max temperature
Point A[C] Point B[C]
A Convection
35%<Io[100% 77 77
Io[35% 75 76
B
Convection
35%<Io[100% 71 74
Io[35% 71 74
C
Convection
35%<Io[100% 77 72
Io[35% 77 72
D
Convection
35%<Io[100% 82 71
Io[35% 82 71
E
Convection
35%<Io[100% 61 79
Io[35% 65 74
A,B,C,D,E,F Forced air 70%<Io[100% 80 75
Io[70% 75 70
4 Life expectancy and
warranty
¡Life Expectancy.
Table 4.1 Life Expectancy (LGA50A-3R3-Y, -5, -12, -15)
Mounting
Method
Cooling
Method
Average ambient
temperature (year)
Load factor
Io[75%
75%<Io[100%
A Convection Ta = 40Cor less 10years or more 8years
Ta = 50C8years 4years
B , C , D Convection Ta = 30Cor less 10years or more 9years
Ta = 40C10years or more 4years
E Convection Ta = 20Cor less 10years or more 10years or more
Ta = 30C10years or more 9years
A,B,C,D,E,F Forced air Ta = 60C5years 3years
Table 4.2 Life Expectancy (LGA50A-24, -48)
Mounting
Method
Cooling
Method
Average ambient
temperature (year)
Load factor
Io[75%
75%<Io[100%
A Convection Ta = 35Cor less 10years or more 10years or more
Ta = 45C10years or more 5years
B , C , D Convection Ta = 30Cor less 10years or more 10years or more
Ta = 40C10years or more 6years
E Convection Ta = 20Cor less 10years or more 10years or more
Ta = 30C10years or more 10years or more
A,B,C,D,E,F Forced air Ta = 50C5years 3years
Table 4.3 Life Expectancy ( LGA75A-O )
Mounting
Method
Cooling
Method
Average ambient
temperature (year)
Load factor
Io[75%
75%<Io[100%
A Convection Ta = 40Cor less 10years or more 8years
Ta = 50C9years 4years
B , C Convection Ta = 30Cor less 10years or more 10years or more
Ta = 40C10years or more 6years
D Convection Ta = 25Cor less 10years or more 10years or more
Ta = 35C10years or more 7years
E Convection Ta = 20Cor less 10years or more 10years or more
Ta = 30C10years or more 7years
A,B,C,D,E,F Forced air Ta = 60C5years 3years
Table 4.4 Life Expectancy ( LGA100A-O )
Mounting
Method
Cooling
Method
Average ambient
temperature (year)
Load factor
Io[75%
75%<Io[100%
A Convection Ta = 40Cor less 10years or more 6years
Ta = 50C8years 3years
B Convection Ta = 30Cor less 10years or more 10years or more
Ta = 40C10years or more 9years
C , E Convection Ta = 25Cor less 10years or more 6years
Ta = 35C9years 3years
D Convection Ta = 30Cor less 10years or more 8years
A,B,C,D,E,F Forced air Ta = 60C5years 3years
Table 4.5 Life Expectancy ( LGA150A-O )
Mounting
Method
Cooling
Method
Average ambient
temperature (year)
Load factor
Io[75%
75%<Io[100%
A Convection Ta = 30Cor less 10years or more 10years or more
Ta = 40C10years or more 4years
B , C Convection Ta = 20Cor less 10years or more 9years
Ta = 30C10years or more 4years
D , E Convection Ta = 20Cor less 10years or more 6years
A,B,C,D,E,F Forced air Ta = 50C5years 3years
Table 4.6 Life Expectancy ( LGA240A-O )
Mounting
Method
Cooling
Method
Average ambient
temperature (year)
Load factor
Io[75%
75%<Io[100%
A Convection Ta = 30Cor less 10years or more 10years or more
Ta = 40C10years or more 8years
B , C Convection Ta = 20Cor less 10years or more 10years or more
Ta = 30C10years or more 10years or more
D Convection Ta = 20Cor less 10years or more 10years or more
E Convection Ta = 15Cor less 10years or more 5years
A,B,C,D,E,F Forced air Ta = 50C5years 3years
¡Warranty
Table 4.7 Warranty
( LGA50A-3R3-Y, -5, -12, -15 )
Mounting
Method
Cooling
Method
Average ambient
temperature (year)
Load factor
Io[75%
75%<Io[100%
A Convection Ta = 40Cor less 5years 5years
Ta = 50C5years 3years
B , C , D Convection Ta = 30Cor less 5years 5years
Ta = 40C5years 3years
E Convection Ta = 20Cor less 5years 5years
Ta = 30C5years 3years
A,B,C,D,E,F Forced air Ta = 60C5years 3years
Table 4.8 Warranty ( LGA50A-24, -48)
Mounting
Method
Cooling
Method
Average ambient
temperature (year)
Load factor
Io[75%
75%<Io[100%
A Convection Ta = 35Cor less 5years 5years
Ta = 45C5years 3years
B , C , D Convection Ta = 30Cor less 5years 5years
Ta = 40C5years 3years
E Convection Ta = 20Cor less 5years 5years
Ta = 30C5years 3years
A,B,C,D,E,F Forced air Ta = 50C5years 3years
AC-DC Power Supplies Open Frame/ Enclosed Type
Instruction Manual
LGA-18 June 26, 2020

Table 4.9 Warranty ( LGA75A-O)
Mounting
Method
Cooling
Method
Average ambient
temperature (year)
Load factor
Io[75%
75%<Io[100%
A Convection Ta = 40Cor less 5years 5years
Ta = 50C5years 3years
B , C Convection Ta = 30Cor less 5years 5years
Ta = 40C5years 3years
D Convection Ta = 25Cor less 5years 5years
Ta = 35C5years 3years
E Convection Ta = 20Cor less 5years 5years
Ta = 30C5years 3years
A,B,C,D,E,F Forced air Ta = 60C5years 3years
Table 4.10 Warranty ( LGA100A-O)
Mounting
Method
Cooling
Method
Average ambient
temperature (year)
Load factor
Io[75%
75%<Io[100%
A Convection Ta = 40Cor less 5years 5years
Ta = 50C5years 3years
B Convection Ta = 30Cor less 5years 5years
Ta = 40C5years 3years
C , E Convection Ta = 25Cor less 5years 5years
Ta = 35C5years 3years
D Convection Ta = 30Cor less 5years 3years
A,B,C,D,E,F Forced air Ta = 60C5years 3years
Table 4.11 Warranty ( LGA150A-O )
Mounting
Method
Cooling
Method
Average ambient
temperature (year)
Load factor
Io[75%
75%<Io[100%
A Convection Ta = 30Cor less 5years 5years
Ta = 40C5years 3years
B , C Convection Ta = 20Cor less 5years 5years
Ta = 30C5years 3years
D , E Convection Ta = 20Cor less 5years 3years
A,B,C,D,E,F Forced air Ta = 50C5years 3years
Table 4.12 Warranty ( LGA240A-O )
Mounting
Method
Cooling
Method
Average ambient
temperature (year)
Load factor
Io[75%
75%<Io[100%
A Convection Ta = 30Cor less 5years 5years
Ta = 40C5years 3years
B , C Convection Ta = 20Cor less 5years 5years
Ta = 30C5years 3years
D Convection Ta = 20Cor less 5years 3years
E Convection Ta = 15Cor less 5years 3years
A,B,C,D,E,F Forced air Ta = 50C5years 3years
5 Ground
¡When installing the power supply with your unit, ensure that the
input FG terminal of CN1 or mounting hole FG is connected to
safety ground of the unit.
However when applying the safety agency, connect the input FG
terminal of CN1 to safety ground of the unit.
CN1
Mounting
hole
FG
Fig.5.1 Ground
6 Option and Others
6.1 Outline of options
*Please inquire us for details of specications and delivery timing.
*You can combine multiple options. Some options, however, can-
not be combined with other options. Please contact us for details.
¿ -C
-Option -C models have coated internal PCB for better moisture
resistance.
¿ -G
-Option -G models are low leakage current type.
-Differences from standard versions are summarized in Table 6.1.
Table 6.1 Low leakage current type
-5 -12 -24
Leakage Current
(AC100/120V 60Hz) 0.1mA max
Conducted Noise N/A
Output Ripple Noise
[mVp-p]
0 to +50C
*1150max 200max 200max
-10 to 0C
*2200max 250max 250max
*1 LGA50A-24 and LGA50A-48 are applied that the upper tem-
perature limit is 45C.
LGA150A and LGA240A are applied that the upper for temperature
limit is 40C.
*2 This is the value that measured on measuring board with ca-
pacitor of 22μF at 150mm from output connector.
Measured by 20MHz oscilloscope or Ripple-Noise meter (Equiva-
lent to KEISOKU-GIKEN:RM-103).
*2
AC-DC Power Supplies Open Frame/ Enclosed Type
Instruction Manual
LGA-19
June 26, 2020

¿-H(LGA50A-24,LGA75A-24,LGA100A-
24,LGA150A-24,LGA240A-24)
-Option -H models can output the peak current.
-Peak load is possible to draw as below.
t1 [10 [sec]
Ip[rated peak current
Iave [rated output current
Input voltage is AC90V to AC132V.
Remarks:
There is a possibility that an internal device is damaged when the
specication is exceeded.
¿ -J1
-Option -J1 models, the Input and Output connector is VH con-
nectors (Mfr. J.S.T.).
¡LGA50A
I/O Connector Mating connector Terminal
CN1 B3P5-VH VHR-5N Chain SVH-21T-P1.1
Loose BVH-21T-P1.1
CN2 B4P-VH VHR-4N Chain SVH-21T-P1.1
Loose BVH-21T-P1.1
(Mfr:J.S.T.)
¡LGA75A
I/O Connector Mating connector Terminal
CN1 B3P5-VH VHR-5N Chain SVH-21T-P1.1
Loose BVH-21T-P1.1
CN2 B6P-VH VHR-6N Chain SVH-21T-P1.1
Loose BVH-21T-P1.1
(Mfr:J.S.T.)
¡LGA100A
I/O Connector Mating connector Terminal
CN1 B3P5-VH VHR-5N Chain SVH-21T-P1.1
Loose BVH-21T-P1.1
CN2 B8P-VH VHR-8N Chain SVH-21T-P1.1
Loose BVH-21T-P1.1
(Mfr:J.S.T.)
¡LGA150A
I/O Connector Mating connector Terminal
CN1 B3P5-VH VHR-5N Chain SVH-21T-P1.1
Loose BVH-21T-P1.1
CN2 B6P-VH VHR-6N Chain SVH-21T-P1.1
Loose BVH-21T-P1.1
CN3 B7P-VH VHR-7N Chain SVH-21T-P1.1
Loose BVH-21T-P1.1
(Mfr:J.S.T.)
¡LGA240A
I/O Connector Mating connector Terminal
CN1
B6P(8-3.6)-VH VHR-8N Chain SVH-21T-P1.1
Loose BVH-21T-P1.1
CN2 B6P-VH VHR-6N Chain SVH-21T-P1.1
Loose BVH-21T-P1.1
CN3 B7P-VH VHR-7N Chain SVH-21T-P1.1
Loose BVH-21T-P1.1
(Mfr:J.S.T.)
¿ -S--SN
--S indicates a type with chassis, and -SN indicates a type with
chassis and cover (Refer to external view). Refer to “Derating”
and Section 3.
¿ -Y
-Option -Y models can adjust the output voltage by the potenti-
ometer is attached .
-Refer to the adjustable range to the table 6.2.
Table 6.2 Output voltage adjustment range
Output voltage Output voltage adjustment range[V]
3.3V*2.85 to 3.63
5V*4.5 to 5.5
12V 10.8 to 13.2
15V 13.5 to 16.5
24V 21.6 to 26.4
48V 43.2 to 52.8
*Some of the product, -Y is standard equipment.
(LGA50A-3R3-Y, LGA75A-3R3-Y, LGA100A-3R3-Y
LGA100A-5-Y, LGA150A-3R3-Y, LGA150A-5-Y)
-
To increase the output voltage, turn a built-in potentiometer
clockwise.
-To decrease the output voltage, turn it counterclockwise.
-
Please take care when you adjust output voltage by potentiometer,
because there is possibility of electric shock and the breakdown as
contacting to other internal circuit by electrically conductive tool.
AC-DC Power Supplies Open Frame/ Enclosed Type
Instruction Manual
Output current [A]
t1 t2
Ip: peak current
0.35
Iave: average current
t
1
t + t12
0
Fig.6.1 Peak current
LGA-20 June 26, 2020

6.2 Others
¡This power supply is the rugged PCB type. Do not drop conduc-
tive objects in the power supply.
¡At light load, there remains high voltage inside the power supply
for a few minutes after power OFF.
So, at maintenance, take care about electric shock.
¡This power supply is manufactured by SMD technology. The
stress to PCB like twisting or bending causes the defect of the
unit, so handle the unit with care.
-Tighten all the screws in the screw hole.
-Install it so that PCB may become parallel to the clamp face.
-Avoid the impact such as drops.
¡While turning on the electricity, and for a while after turning off,
please don’t touch the inside of a power supply because there are
some hot parts in that.
AC-DC Power Supplies Open Frame/ Enclosed Type
Instruction Manual
LGA-21
June 26, 2020