Cosel LCA10S User manual

Basic Characteristics Data
*1Please refer to Series/Parallel operation in the instruction manual.
*The value of input current shown is at ACIN 100V and rated load.
*Switching freguency of flyback converter deperds on input voltage and load factor.
Basic Characteristics Data
LCA150S
LCA100S
LCA75S
LCA50S
LCA30S
LCA15S
LCA10S
Model
3.6
2.5
1.9
170
160
190
6.3
5
3
80 - 400
80 - 300
80 - 350
frequency
Switching
Circuit method
Flyback converter
Flyback converter
Flyback converter
[A]
1.3
0.7
0.4
0.3
current
Input
200 3
3
2
2
[A]
Fuse
operation availability
*1
*1
*1
*1
*1
*1
*1
Series/Parallel
Parallel
operation
Thermistor
Triac
Triac
CEM-3
CEM-3
CEM-3
Yes
Yes
Yes
Yes
Yes
Yes
PCB/Pattern
Thermistor
Thermistor
Thermistor
Inrush
protection
circuit
current
CEM-3
CEM-3
CEM-3
CEM-3
Material
Double
sided
Yes
Yes
Yes
Yes
sided
Single
*1
*1
*1
Yes
Series
operation
Single ended forward method
Single ended forward method
Single ended forward method
Single ended forward method
[kHz]
Resistance of line filter
LCA-16
LCA
June29,2011

1 Terminal Block
2 Function
3
Series Operation and Parallel Operation
LCA-17
4 Assembling and Installation Method
4.1
4.2
Instruction Manual
LCA-18
LCA-19
2.1
2.2
2.3
2.4
2.5
Input voltage range
Installation method
Inrush current limiting
Derating
Overcurrent protection
Overvoltage protection
Output voltage adjustment range
LCA-18
LCA-18
LCA-19
LCA-19
LCA-19
LCA-20
LCA-20
LCA-20
LCA-18
4.3 Mounting screw LCA-22
5
Ground
6 Others
LCA-22
LCA-22
LCA
AC-DC Power Supplies Open Frame/Enclosed type
June29,2011

1 Terminal Block
LCA-18
lLCA10S
-Output
+Output
AC(L)
Frame ground
AC(N)
lLCA15S
-Output
-Output
+Output
+Output
AC(L)
Frame ground
AC(N)
lLCA30S
+Output
+Output
-Output
-Output
AC(L)
Frame ground
AC(N)
lLCA50S
+Output
+Output
-Output
-Output
AC(L)
Frame ground
AC(N)
lLCA75S
+Output
+Output
+Output
AC(L)
Frame ground
AC(N)
-Output
-Output
-Output
lLCA100S
+Output
+Output
+Output
+Output
AC(L)
Frame ground
AC(N)
-Output
-Output
-Output
-Output
lLCA150S
- +Output
- -Output
AC(L)
Frame ground
AC(N)
2 Function
2.1 Input voltage range
nThe range is from AC85V to AC132V or DC110V to DC170V.
n
n
n
n
n
n
AC input voltage must have a range from AC85V to AC132V or
DC110V to DC170V for normal operation. If the wrong input is ap-
plied, the unit will not operate properly and/or may be damaged.
Inrush current limiting is built-in.
If a switch in the input side is installed, it has to be the one han-
dling the input inrush current.
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.
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.
In cases that conform with safety standard, input voltage range is
AC100-AC120V(50/60Hz).
2.2 Inrush current limiting
l
l
LCA15S LCA30S LCA50S LCA75S
LCA100S LCA150S
LCA
Instruction Manual
AC-DC Power Supplies Open Frame/Enclosed type
June29,2011

2.3 Overcurrent protection
n
n
n
Overcurrent protection is built-in and comes into effect at over
105% of the rated current. Overcurrent protection prevents the
unit from short circuit and overcurrent condition of less than 1 min-
ute. The unit automatically recovers when the fault condition is
cleared.
When the overcurrent/short circuit condition continues more than
1 minute, it may damage devices inside the power supply.
The power supply which has a current foldback characteristics
may not start up when connected to nonlinear load such as lamp,
motor or constant current load. See the characteristics below.
lLCA10S LCA15S LCA30S
Remarks:
l
l
LCA30S LCA50S LCA75S
LCA100S LCA150S
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.
2.5 Output voltage adjustment range
n
n
n
n
n
n
Adjustment of output voltage is possible by using potentiometer
(Only available to 3V output voltage type).
Output voltage is increased by turning potentiometer clockwise
and is decreased by turning potentiometer counterclockwise.
Modified unit ”-Y” is recommended which can adjust the output
voltage.
Adjustment of output voltage is possible by using potentiometer
(Only available to 3 and 5V output voltage type).
Output voltage is increased by turning potentiometer clockwise
and is decreased by turning potentiometer counterclockwise.
Modified unit ”-Y” is recommended which can adjust the output
voltage.
LCA-19
Fig.2.1 Current foldback characteristics
Note: In case of nonlinear load, the output is locked out at A point.
: Load characteristics of power supply.
: Characteristics of load (lamp, motor, constant current load, etc.)
l
l
l
LCA50S LCA75S LCA100S LCA150S
LCA10S LCA15S LCA30S
LCA50S LCA75S LCA100S LCA150S
n
n
n
Overcurrent protection is built-in and comes into effect at over
105% of the rated current. Overcurrent protection prevents the
unit from short circuit and overcurrent condition of less than 15
seconds. The unit automatically recovers when the fault condition
is cleared.
Overvoltage protection circuit, clamping the output voltage by
zener diode, is built-in and comes into effect at over 115% of the
rated voltage (For 3V type, overvoltage protection kicks in at over
4V). The unit in an overvoltage protection mode cannot be recov-
ered by a user, it must be repaired at the factory. Overvoltage pro-
tection (diode) also comes into effect if the voltage is externally ap-
plied to the output side. Avoid applying voltage to the output side.
The overvoltage protection circuit is built-in and comes into effect
at 115 - 140% of the rated voltage. The AC input should be shut
down if overvoltage protection is in operation. The minimum inter-
val of AC recycling for recovery is 1.5 minutes.
The recovery time varies depending on input voltage.
2.4 Overvoltage protection
A
V
100
Output Voltage [V]
Load factor [%]
3 Series Operation and
Parallel Operation
lLCA10S LCA15S LCA30S
nSeries operation is available by connecting the output of two or
more power supplies, as shown below. Output current in series
connection should be lower than the lowest rated current in each
unit.
(a) When the output voltage is less than 5V.
D1 - D4: Please use Schottky Barrier Diode
LCA
Power
Supply
+
Power
Supply
+
Load
D1
D2
D4
D3
-
-
Instruction Manual
AC-DC Power Supplies Open Frame/Enclosed type
June29,2011

4.1 Installation method
n
n
n
n
When two or more power supplies are used side by side, position
them with proper intervals to allow enough air ventilation. Ambient
temperature around each power supply should not exceed the
temperature range shown in derating curve.
Please be carefull with that metal parts do not touch mounted
parts at front side, where major components are mounted, when
a power supply is installed with them.
The operative ambient temperature is different by with/without
case cover or mounting position. Please refer drawings as below.
Valid ambient temperature is different depending on the use of
the cover or the mounting positions. Please refer to the following
derating curve.
When unit mounted except below drawings, it is required to con-
sider ventilated environment by forced air cooling for tempera-
ture/load derating. For details, please consult our sales or engi-
neering departments.
4.2 Derating
LCA-20
When the output voltage is more than 12V.
D1 D2: Please use Schottky Barrier Diode
(b)
n
n
Parallel operation is not possible.
Redundancy operation is available by wiring as shown below.
n
n
Even a slight difference in output voltage can affect the balance
between the values of I and I .
Please make sure that the value of I does not exceed the rated
current of a power supply.
I the rated current value
(a)
12
3
3
Series operation is available by connecting the output of two or
more power supplies, as shown below. Output current in series
connection should be lower than the lowest rated current in each
unit.
lLCA50S LCA75S LCA100S LCA150S
4 Assembling and
Installation Method
(b)
n
n
Parallel operation is not possible.
Redundancy operation is available by wiring as shown below.
nEven a slight difference in output voltage can affect the balance
between the values of I and I .
Please make sure that the value of I does not exceed the rated
current of a power supply.
I the rated current value
12
3
3
LCA
I2
I1I3
-
-
+
Power
Supply
Power
Supply
+
Load
I2
I1I3
-
-
+
Power
Supply
Power
Supply
+
Load
Load
Load
Power
Supply
+
Power
Supply
-
-
+
Load
Load
Power
Supply
+
Power
Supply
-
-
+
+
-
+
-
Power
Supply
Power
Supply
Load
D1
D2
Power
Supply
+
-
Load
Power
Supply
+
-
Instruction Manual
AC-DC Power Supplies Open Frame/Enclosed type
June29,2011

LCA-21
nIn case of metal chassis, keep more than 8mm for the part of to
insulate between lead of component & metal chassis. If it is less
than 8mm, insert the insulation sheet between power supply &
metal chassis.
lLCA10S
lLCA15S
lLCA50S
For 3V, 5V, 12V, 15V
(F) mounting should be operated by Forced air.
For 24V, 36V, 48V
(F) mounting should be operated by Forced air.
Note: In the hatched area, the specification of Ripple, Ripple
Noise is different from other area.
lLCA30S
lLCA75S
(F) mounting should be operated by Forced air.
LCA
(E) mounting
(F) mounting
(A), (B), (C), (D) mounting
-10
100
80
60
40
20
0
706050403020100
(F) mounting(C) mounting
(A), (B), (D), (E) mounting
-10
100
80
60
40
20
0
706050403020100
Load factor [%]
Ambient temperature [ ]
Load factor [%]
Ambient temperature [ ]
Convection
Forced air (0.5m /min)
3
Convection
Forced air (0.5m /min)
3
(A) - (F)
mounting
(A) - (F)
mounting
(E), (F) mounting
(A), (B), (C), (D) mounting
-10
100
80
60
40
20
0
706050403020100
(A) - (F) mounting
Load factor [%]
Ambient temperature [ ]
Convection
Forced air (0.5m /min)
3
(B), (C), (E) mounting
(D) mounting (A) mounting
-10
100
80
60
40
20
0
706050403020100
(A) - (F)
mounting
Load factor [%]
Ambient temperature [ ]
Convection
Forced air (0.5m /min)
3
()50 , 88%
(B), (C), (E) mounting
(D) mounting
(A) mounting
-10
100
80
60
40
20
0
706050403020100
(A) - (F) mounting
Load factor [%]
Ambient temperature [ ]
Convection
Forced air (0.5m /min)
3
(D) (E), mounting
(B) (C, ) mounting (A) mounting
-10
100
80
60
40
20
0
706050403020100
Load factor [%]
Ambient temperature [ ]
(A) - (F) mounting
Convection
Forced air (0.5m /min)
3
CN1
CN1
CN1
CN1
CN1
CN1
Normal position
(F)
(E)
(D)
(C)(B)(A)
Instruction Manual
AC-DC Power Supplies Open Frame/Enclosed type
June29,2011

6 Others
n
n
This power supply is rugged PCB type. Do not drop conductive
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.
LCA-22
4.3 Mounting screw
n
n
The mounting screw should be M3. The hatched area shows the
allowance of metal parts for mounting.
Keep isolation distance between metal parts for mounting and in-
ternal components.
lLCA10S
5 Ground
nWhen installing the power supply with your unit, ensure that the in-
put FG terminal or mounting hole FG is connected to safety
ground of the unit. However, when applying the safety agency,
connect the input FG terminal to safety ground of the unit.
lLCA150S
(F) mounting should be operated by Forced air.
Note: In the hatched area, the specification of Ripple, Ripple
Noise is different from other area.
lLCA15S LCA30S LCA50S LCA75S
LCA100S LCA150S
nKeep isolation distance between screw and internal components,
as below chart.
LCA
60 5050 4040 3030 2020 10
mounting(C)
, , mounting(B) (D) (E)
mounting(A)
-10
100
80
60
40
20
0
100
(A) - (F)mounting
Load factor [%]
Ambient temperature [ ]
Convection
Forced air (0.5m /min)
3
lLCA100S
(F) mounting should be operated by Forced air.
60 5050 4040 3030 20
(E) mounting
(B), (C), (D) mounting (A) mounting
-10
100
80
60
40
20
0
20100
Load factor [%]
Ambient temperature [ ]
(A) - (F) mounting
Convection
Forced air (0.5m /min)
3
70 60
Inside
is with
case cover
Inside
is with
case cover
Instruction Manual
AC-DC Power Supplies Open Frame/Enclosed type
June29,2011
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