Basic Characteristics Data
Basic Characteristics Data
Inrush
current
protection
PCB/Pattern
Material
Single
sided
Double
sided
LFA
Model Circuit method
Switching
frequency
[kHz]
*1
Input
current
[A]
LFA10F Flyback converter 100 0.26 LF CEM-3 Yes Yes No
LFA15F Flyback converter 100 0.35 Thermistor CEM-3 Yes Yes No
LFA30F Flyback converter 130 0.65 Thermistor CEM-3 Yes Yes No
Series/Parallel
operation availability
Series
operation
Parallel
operation
*2
LFA50F
LFA75F
LFA100F
LFA150F
LFA240F
LFA300F
*1 The value of input current is at ACIN 100V and rated load.
*2 Refer to Instruction Manual 2.
Active fi lter 60-440
Flyback converter 130
Active fi lter 60-440
Flyback converter 130
Active fi lter 60
Forward converter 140
Active fi lter 60
Forward converter 140
Active fi lter 60
Forward converter 140
Active fi lter 60
Forward converter 140
0.67 Thermistor CEM-3 Yes Yes No
1.0 Thermistor CEM-3 Yes Yes No
1.3 Thermistor CEM-3 Yes Yes No
2.0 Thermistor CEM-3 Yes Yes No
3.3 SCR CEM-3 Yes Yes No
4.1 SCR CEM-3 Yes Yes No
LFA-20
AC-DC Power Supplies Open Frame/ Enclosed Type
Instruction Manual
1 Function
1.1 Input voltage range
1.2 Inrush current limiting
1.3 Overcurrent protection
1.4 Overvoltage protection
1.5 Output voltage adjustment range
1.6 Output ripple and ripple noise
1.7 Isolation
1.8 Reducing standby power
2 Series Operation and Parallel Operation
2.1 Series Operation
2.2 Parallel Operation
3 Assembling and Installation Method
3.1 Installation method
3.2 Derating
3.3 Mounting screw
3.4 Expectancy life and warranty
LFA-22
LFA
LFA-22
LFA-22
LFA-22
LFA-22
LFA-22
LFA-23
LFA-23
LFA-23
LFA-23
LFA-23
LFA-24
LFA-24
LFA-24
LFA-24
LFA-28
LFA-28
4 Ground
5 Option and Others
5.1 Outline of options
5.2 Others
LFA-30
LFA-30
LFA-30
LFA-32
LFA-21
AC-DC Power Supplies Open Frame/ Enclosed Type
1 Function
LFA
1.1 Input voltage range
The range is from AC85V to AC264V or DC120V to DC370V
¡
(please see SPECIFICATIONS for details).
In cases that conform with safety standard, input voltage range is
¡
AC100-AC240V (50/60Hz).
If input value doesn’t fall within above range, a unit may not oper-
¡
ate in accordance with specifi cations and/or start hunting or fail.
If you need to apply a square waveform input voltage, which is
commonly used in UPS and inverters, please contact us.
When the input voltage changes suddenly, the output voltage ac-
¡
curacy might exceed the specifi cation. Please contact us.
LFA10F, LFA15F, LFA30F
¿
A power factor improvement circuit (active fi lter) is not built-in. If
¡
you use multiple units for a single system, standards for input harmonic current may not be satisfi ed. Please contact us for details.
LFA10F, LFA15F, LFA30F, LFA50F, LFA75F,
¿
LFA100F, LFA150F, LFA240F, LFA300F
Operation stop voltage is set at a lower value than that of a stan-
¡
dard version (derating is needed).
-Use Conditions
LFA10F 5W (3W)
LFA15F 7.5W (5W)
LFA30F 10W (7.5W)
LFA50F 15W (10W)
LFA75F 25W (15W)
LFA100F 30W (20W)
LFA150F 50W (30W)
LFA240F 80W
LFA300F 100W (75W)
Input AC50V or DC70V
Duty 1s/30s
Please avoid using continuously for more than 1 second
*
under above conditions. Doing so may cause a failure.
Output ( ) 3.3V
Instruction Manual
LFA240F, LFA300F
¿
Thyristor technique is used in the inrush current limiting circuit.
¡
When you turn power ON/OFF repeatedly within a short period of
time, please have enough intervals so that the inrush current limiting circuit becomes operative.
When the switch of the input is turned on, the primary inrush cur-
¡
rent and secondary inrush current will be generated because the
thyristor technique is used for the inrush current limiting circuit.
1.3 Overcurrent protection
An overcurrent protection circuit is built-in and activated at 105%
¡
of the rated current or 101% of the peak current. A unit automatically recovers when a fault condition is removed.
Please do not use a unit in short circuit and/or under an overcurrent condition.
Intermittent Operation Mode
¡
Intermittent operation for overcurrent protection is included in a
part of series. When the overcurrent protection circuit is activated
and the output voltage drops to a certain extent, the output becomes intermittent so that the average current will also decrease.
1.4 Overvoltage protection
An overvoltage protection circuit is built-in. If the overvoltage pro-
¡
tection circuit is activated, shut down the input voltage, wait more
than 3 minutes and turn on the AC input again to recover the output voltage. Recovery time varies depending on such factors as
input voltage value at the time of the operation.
In option -R2, overvoltage protection is removed by toggling ON/
¡
OFF signal of remote control.
Remarks :
Please avoid applying a voltage exceeding the rated voltage to an
output terminal. Doing so may cause a power supply to malfunction or fail. If you cannot avoid doing so, for example, if you need
to operate a motor, etc., please install an external diode on the
output terminal to protect the unit.
1.5 Output voltage adjustment range
1.2 Inrush current limiting
An inrush current limiting circuit is built-in.
¡
If you need to use a switch on the input side, please select one
¡
that can withstand an input inrush current.
LFA10F
¿
Resistance for line fi lter is used for inrush current limiting.
¡
LFA15F, LFA30F, LFA50F, LFA75F, LFA100F,
¿
LFA150F
Thermistor is used in the inrush current limiting circuit. When you
¡
turn the power ON/OFF repeatedly within a short period of time,
please have enough intervals so that a power supply cools down
before being turned on.
LFA-22
Adjustment of output voltage is possible by using potentiometer.
¡
Please refer to instruction manual 5.1.
Option ”-Y” is recommended which can adjust the output voltage.
¡
AC-DC Power Supplies Open Frame/ Enclosed Type
Instruction Manual
1.6 Output ripple and ripple noise
Output ripple noise may be infl uenced by measurement environ-
¡
ment, measuring method fi g.1.1 is recommended.
+Vout
2
C
1
C
+
-Vout
Osiloscope/
Ripple noise meter
Bw:20MHz
1 :
Film capacitor 0.1μF
C
2 :
Aluminum electrolytic capacitor 22μF
C
Fig.1.1 Measuring method of Ripple and Ripple Noise
Remarks :
When GND cable of probe with fl ux of magnetic force from power
supply are crossing, ripple and ripple noise might not measure
correctly.
Please note the measuring environment.
150mm
Differential probe
Load
LFA100F, LFA150F, LFA240F, LFA300F
¿
As for option -R2, reducing standby power is possible by OFF sig-
¡
nal of the remote control.
Please refer to instruction manual 5.1.
2 Series Operation and
Parallel Operation
2.1 Series Operation
LFA10F, LFA15F, LFA30F, LFA50F, LFA75F
¿
Series operation is available by connecting the outputs of two or
¡
more power supplies with the same output voltage, as shown below. Output current in series connection should be lower than the
lowest rated current in each unit.
12V or less 15V or more
Power
+
Supply
-
Power
+
-
Supply
D1-D4 : Use a schottky barrier
diode with low forward
voltage.
Fig.2.1 Examples of connecting in series operation (a)
D1
D3
D2
D4
Power
+
Supply
Load
Power
Supply
D1,D2 : Use a schottky barrier
D1
-
+
D2
-
diode with low forward
voltage.
LFA
Load
Bad example Good example
Fig.1.2. Example of measuring output ripple and ripple noise
1.7 Isolation
For a receiving inspection, such as Hi-Pot test, gradually increase
¡
(decrease) the voltage for the start (shut down). Avoid using HiPot tester with the timer because it may generate voltage a few
times higher than the applied voltage, at ON/OFF of a timer.
1.8 Reducing standby power
LFA10F, LFA15F
¿
A circuit reducing standby power is built in LFA10F and LFA15F.
¡
(standby power : 0.5W typ)
The load factor: Io=0-35%, the internal switch element is intermit-
tent operated, and the switching loss is decreased.
The specification of the Ripple/Ripple Noise changes by this
intermittent operation. The value of the ripple/ripple Noise when
intermittent operates changes in the input voltage and the output
current.
Please contact us for details.
+
Power
Supply
-
Power
+
Supply
-
Fig.2.2 Examples of connecting in series operation (b)
LFA100F, LFA150F, LFA240F, LFA300F
¿
You can use a power supply in series operation. The output cur-
¡
rent in series operation should be lower than the rated current of a
power supply with the lowest rated surrent among power supplies
that are serially connected. Please make sure that no surrent exceeding the rated current fl ows into a power supply.
Power
+
Supply
Power
Supply
Only LFA300F -3R3 and -5.
*
Use a schottky barrier diode
with low forward voltage.
*
-
+
*
-
(a) (b)
Fig.2.3 Examples of connecting in series operation
Load
Power
Supply
Power
Supply
Load Load
+
-
LoadLoad
+
-
LFA-23
AC-DC Power Supplies Open Frame/ Enclosed Type
2.2 Parallel Operation
Parallel operation is not possible.
¡
Redundancy operation is available by wiring as shown below.
¡
LFA
I1 I3
Power
Supply
+
-
Instruction Manual
There is a possibility that it is not possible to cool enough when
¡
the power supply is used by the sealing up space as showing in
Figure 3.2.
Please use it after confi rming the temperature of point A and point
B of Instruction Manual 3.2.
Case
I
2
Power
Supply
Fig.2.4 Example of redundancy operation
Even a slight difference in output voltage can affect the balance
¡
between the values of I
Please make sure that the value of I
current of a power supply.
+
-
and I2.
1
does not exceed the rated
3
[ the rated current value
I
3
Load
3 Assembling and
Installation Method
3.1 Installation method
This power supply is manufactured by SMD technology.
¡
The stress to P.C.B like twisting or bending causes the defect of
the unit,so handle the unit with care.
In case of metal chassis, keep the distance between d
¡
insulate between lead of component and metal chassis, use the
spacer of 8mm or more between d
the insulation sheet between power supply and metal chassis.
. If it is less than d1 & d2, insert
1
& d2 for to
1
Power supply
Fig.3.2 Installation example
3.2 Derating
Environment to use it and Installation environment
¡
When using it,it is necessary to radiate heat by the heat of the pow-
er supply.
Table 3.1 - 3.9 shows the relation between the upper limit tempera-
ture (Point A and Point B) and load factors.
Please consider the ventilation so that the convection which is
enough for the whole power supply is provided.
And temperature of Point A and Point B please become lower than
upper limit temperature.
The expectancy life in the upper bound temperature (Point A and
Point B) is three years or more.
Please refer to External View for the position of Point A and Point B.
In case of with Chassis and Cover, please contact our sales offi 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 3.4 if you want to extend the longevity of the ex-
*
pectancy life.
CN1
d
LFA-24
2
CN1
d
2
d
2
d2
Fig.3.1 Installation method
d2
=4mm min
d2
=8mm min
d1
Table 3.1 Temperatures of Point A, Point B LFA10F-
Mounting
Method
A
B
C
D
E
F
A,B,C,D,E,F Forced air
Cooling
Method
Convection
Convection
Convection
Convection
Convection
Convection
Load factor
20%<Io[100% 70 84
Io[20% 75 79
20%<Io[100% 70 81
Io[20% 73 77
20%<Io[100% 76 80
Io[20% 76 77
20%<Io[100% 70 78
Io[20% 75 77
20%<Io[100% 73 84
Io[20% 76 79
20%<Io[100% 74 80
Io[20% 76 78
70%<Io[100% 75 75
Io[70% 75 75
Max temperature
Point A[C] Point B[C]
O
AC-DC Power Supplies Open Frame/ Enclosed Type
Instruction Manual
Table 3.2 Temperatures of Point A, Point B LFA15F-
Mounting
Method
A
B
C
D
E
F
A,B,C,D,E,F Forced air
Table 3.3 Temperatures of Point A, Point B
Mounting
Method
A
B
C
D
E
F
A,B,C,D,E,F Forced air
Table 3.4 Temperatures of Point A, Point B
Mounting
Method
A
B
C
D
E
F
A,B,C,D,E,F Forced air
Cooling
Method
Convection
Convection
Convection
Convection
Convection
Convection
Cooling
Method
Convection
Convection
Convection
Convection
Convection
Convection
Cooling
Method
Convection
Convection
Convection
Convection
Convection
Convection
Load factor
40%<Io[100% 72 80
Io[40% 77 81
40%<Io[100% 68 73
Io[40% 74 78
40%<Io[100% 75 84
Io[40% 78 81
40%<Io[100% 71 77
Io[40% 76 79
40%<Io[100% 70 79
Io[40% 76 81
40%<Io[100% 71 78
Io[40% 76 80
70%<Io[100% 75 75
Io[70% 75 75
Load factor
70%<Io[100% 73 73
Io[70% 79 77
60%<Io[100% 73 74
Io[60% 80 82
70%<Io[100% 80 77
Io[70% 83 80
70%<Io[100% 72 70
20%<Io[70% 80 77
Io[20% 79 80
70%<Io[100% 73 79
20%<Io[70% 79 85
Io[20% 77 81
70%<Io[100% 73 75
Io[70% 79 79
70%<Io[100% 75 75
Io[70% 75 75
Load factor
70%<Io[100% 86 68
Io[70% 86 77
70%<Io[100% 72 65
Io[70% 77 70
50%<Io[100% 78 71
Io[50% 84 77
50%<Io[100% 83 68
Io[50% 85 72
50%<Io[100% 76 75
Io[50% 83 81
50%<Io[100% 80 78
Io[50% 84 76
70%<Io[100% 75 75
Io[70% 75 75
Max temperature
Point A[C] Point B[C]
LFA30F-O
Max temperature
Point A[C] Point B[C]
LFA50F-O
Max temperature
Point A[C] Point B[C]
O
Table 3.5 Temperatures of Point A, Point B
Mounting
Method
A
B
C
D
E
F
A,B,C,D,E,F Forced air
Table 3.6 Temperatures of Point A, Point B
Mounting
Method
A
B
C
D
E
F
A,B,C,D,E,F Forced air
Table 3.7 Temperatures of Point A, Point B
Mounting
Method
A
B
C
D, F
E
A,B,C,D,E,F Forced air
Cooling
Method
Convection
Convection
Convection
Convection
Convection
Convection
Cooling
Method
Convection
Convection
Convection
Convection
Convection
Convection
Cooling
Method
Convection
Convection
Convection
Convection
Convection
Load factor
70%<Io[100% 85 70
Io[70% 86 76
70%<Io[100% 77 65
Io[70% 81 71
70%<Io[100% 81 68
Io[70% 83 72
70%<Io[100% 78 58
10%<Io[70% 80 63
Io[10% 84 72
70%<Io[100% 73 66
10%<Io[70% 83 68
Io[10% 83 79
70%<Io[100% 74 59
Io[70% 83 71
70%<Io[100% 75 75
Io[70% 75 75
Load factor
70%<Io[100% 85 74
50%<Io[70% 88 79
Io[50% 88 83
70%<Io[100% 77 72
50%<Io[70% 87 82
Io[50% 88 86
70%<Io[100% 87 82
Io[70% 88 85
70%<Io[100% 80 70
Io[70% 85 80
70%<Io[100% 74 85
Io[70% 80 88
70%<Io[100% 79 71
50%<Io[70% 88 77
Io[50% 88 79
70%<Io[100% 75 75
Io[70% 75 75
Load factor
60%<Io[100% 79 75
20%<Io[60% 86 85
Io[20% 87 87
70%<Io[100% 75 70
30%<Io[70% 85 78
Io[30% 86 81
60%<Io[100% 81 75
30%<Io[60% 86 81
Io[30% 87 83
70%<Io[100% 73 67
30%<Io[70% 83 76
Io[30% 84 77
70%<Io[100% 73 75
30%<Io[70% 82 83
Io[30% 83 84
70%<Io[100% 75 75
Io[70% 75 75
LFA75F-
LFA100F-
LFA150F-
O
Max temperature
Point A[C] Point B[C]
LFA
O
Max temperature
Point A[C] Point B[C]
O
Max temperature
Point A[C] Point B[C]
LFA-25
AC-DC Power Supplies Open Frame/ Enclosed Type
Instruction Manual
Table 3.8 Temperatures of Point A, Point B LFA240F-
Mounting
Method
LFA
A
Cooling
Method
Convection
Load factor
Max temperature
Point A[C] Point B[C]
75%<Io[100% 75 70
50%<Io[75% 82 79
Io[50% 86 85
75%<Io[100% 63 61
B
Convection
50%<Io[75% 73 73
Io[50% 81 83
75%<Io[100% 76 73
C
Convection
50%<Io[75% 81 79
Io[50% 87 85
75%<Io[100% 66 55
D
Convection
50%<Io[75% 74 65
Io[50% 84 78
75%<Io[100% 62 62
E
Convection
50%<Io[75% 73 74
Io[50% 81 84
75%<Io[100% 68 62
F
Convection
50%<Io[75% 77 73
Io[50% 84 83
A,B,C,D,E,F Forced air
70%<Io[100% 75 75
Io[70% 75 75
Table 3.9 Temperatures of Point A, Point B, Point C, Point D LFA300F-
Mounting
Method
A,B,C,D,E and F
(3.3V/5V/12V/15V)
A,B,C,D,E and F
(24V/30V/36V/48V)
A
B
C
D
E
F
Cooling
Method
Convection
Convection
Convection
Convection
Convection
Convection
Forced air
Forced air
Load factor
80%<Io[100%
60%<Io[80%
Io[60%
80%<Io[100%
60%<Io[80%
Io[60%
80%<Io[100%
60%<Io[80%
Io[60%
80%<Io[100%
60%<Io[80%
Io[60%
80%<Io[100%
60%<Io[80%
Io[60%
80%<Io[100%
60%<Io[80%
Io[60%
50%<Io[100%
Io[50%
50%<Io[100%
Io[50%
Max temperature
Point A[C] Point B[C] Point C[C] Point D[C]
70 86
75 88
79 89
57 68
62 71
71 79
69 75
74 75
83 82
58 62
64 66
75 75
57 80
63 83
74 88
61 68
68 71
76 80
75 75 85 85
75 75 85 85
75 75 85 85
75 75 85 85
O
The operative ambient temperature is different by with / without
¡
chassis cover or mounting position. Derating curve is shown below.
Note: In the hatched area, the specification of Ripple, Ripple
Noise is different from other area.
LFA10F
¿
(B), (C)mounting(A), (D), (E), (F)mounting
11
(A) ~ (F)
60 [50
]
2
mounting
]
100
80
60
40
35
20
Load factor [%]
0
-10 70 [60
1
Convection
2
Forced air (0.5m3/min
20100
Inside[ ] is with case cover
*
4030
)
]
50 [40
[C]Ambient temperature
Fig.3.3 Ambient temperature derating curve (refer to Table 3.1)
LFA15F
¿
(A), (B), (C), (D)mounting(E), (F)mounting
11
(A) ~ (F)
60 [50
]
2
mounting
]
100
80
O
60
40
35
20
Load factor [%]
0
-10 70 [60
1
Convection
2
Forced air (0.5m3/min
20100
Inside[ ] is with case cover
*
)
]
50 [40
[30]4030
[C]Ambient temperature
Fig.3.4 Ambient temperature derating curve (refer to Table 3.2)
LFA30F
¿
(A), (C)mounting(D), (E)mounting
(F)mounting
100
80
60
40
20
Load factor [%]
0
-10 70 [60
1
1
Convection
2
Forced air (0.5m3/min)
20100
Inside[ ] is with case cover
*
40 [30
30
11
(B)mounting
1
]
]
[C]Ambient temperature
50 [40
60 [50
(A) ~ (F)
2
mounting
]
]
Fig.3.5 Ambient temperature derating curve (refer to Table 3.3)
LFA50F
¿
(D)mounting
1
(C), (E)mounting
1
(F)mounting
100
80
60
40
20
Load factor [%]
0
-10 70 [50
1
1
Convection
2
Forced air (0.5m3/min)
20100
Inside[ ] is with case cover
*
30 [10]
40 [20
[C]Ambient temperature
(B)mounting
1
(A)mounting
1
]
]
50 [30
60 [40
(A) ~ (F)
2
mounting
]
]
Fig.3.6 Ambient temperature derating curve (refer to Table 3.4)
LFA-26
AC-DC Power Supplies Open Frame/ Enclosed Type
Instruction Manual
LFA75F
¿
(C)mounting(D)mounting
40 [20
11
(A), (B)mounting
1
(A) ~ (F)
2
mounting
]
]
]
]
50 [30
60 [40
(E), (F)mounting
100
80
60
40
20
Load factor [%]
0
-10 70 [50
1
1
Convection
2
Forced air (0.5m3/min)
20100
0 [10]3
[C]Ambient temperature
Inside[ ] is with case cover
*
Fig.3.7 Ambient temperature derating curve (refer to Table 3.5)
LFA100F
¿
(D), (E), (F)mounting
1
100
80
75
60
50
40
20
Load factor [%]
0
-10 7060 50400 3554535
1
Convection
2
Forced air (0.5m3/min)
(C)mounting
1
20100
(A)mounting
1
1
(B)mounting
2 (A) ~ (F)
mounting
[C]Ambient temperature
Fig.3.8 Ambient temperature derating curve (refer to Table 3.6)
LFA100F-O-SN
¿
(D), (E)mounting
1
100
80
75
60
40
20
Load factor [%]
10
0
-10 60 50400 3
1
Convection
2
Forced air (0.5m3/min)
1
20100
(C)mounting
2 (A) ~ (F)
mounting
4535
(B)mounting
1
(A)mounting
1
[C]Ambient temperature
Fig.3.9 Ambient temperature derating curve
LFA150F
¿
(B)mounting
(D), (E), (F)mounting
100
80
70
60
40
30
2
0
Load factor [%]
0
-10 7060 50400 3
1
1
Convection
2
Forced air (0.5m3/min)
(C)mounting
1
255654535250100
1
(A)mounting
1
2 (A) ~ (F)
mounting
[C]Ambient temperature
Fig.3.10 Ambient temperature derating curve (refer to Table 3.7)
LFA240F
¿
(B)mounting
(D), (F)mounting
1
(E)mounting
100
80
60
40
2250
Load factor [%]
0
-10 7060 50400 3
1
1
Convection
2
Forced air (0.5m3/min)
(C)mounting
1
2011500
1
(A)mounting
1
2 (A) ~ (F)
mounting
[C]Ambient temperature
Fig.3.12 Ambient temperature derating curve (refer to Table 3.8)
LFA240F-O-SN
¿
(B)mounting
(D)mounting
1
(E)mounting
100
80
70
60
40
25
20
Load factor [%]
10
0
-10 60 50400 3
1
1
Convection
2
Forced air (0.5m3/min)
15
5
(C)mounting
1
25
20100
1
(A)mounting
1
2 (A) ~ (F)
mounting
[C]Ambient temperature
Fig.3.13 Ambient temperature derating curve
LFA300F
¿
(B), (C)mounting
1
100
80
60
50
40
20
Load factor[%]
0
-10 7060 50400 3
1
Convection
2
Forced air
(1.0m
(0.5m3/min)
3
/min)
(E), (F)mounting
(D)mounting
1
:3.3V/5V/12V/15V
:24V/30V/36V/48V
25
20100
1
(A)mounting
1
2 (A) ~ (F)
mounting
[C]Ambient temperature
Output
voltage
Output power[W]
1Convection 2Forced air
3.3V 132.0 198.0
5V 200.0 300.0
12V 204.0 324.0
15V 210.0 330.0
24V 300.0 336.0
30V 300.0 330.0
36V 302.4 338.4
48V 302.4 336.0
Fig.3.14 Ambient temperature derating curve (refer to Table 3.9)
LFA
LFA150F-O-SN
¿
(D), (E)mounting
100
80
70
60
50
40
30
20
Load factor [%]
0
-10 50400 3
1
1
Convection
2
Forced air (0.5m3/min)
Fig.3.11 Ambient temperature derating curve
201500
(C)mounting
1
(B)mounting
1
(A)mounting
1
2 (A) ~ (F)
mounting
554525
[C]Ambient temperature
LFA-27
AC-DC Power Supplies Open Frame/ Enclosed Type
(A)(
)(C)
Derating curve depending on input voltage
¡
Derating curve depending on input voltage is shown in Fig.3.8.
LFA10F, LFA15F
¿
8
Instruction Manual
LFA
[%]
100
80
Load factor
[AC V]
Fig.3.17 Derating curve depending on input voltage
Mounting method
¡
CN1
Standard
Position
(D) (E) (F)
CN1
(F) mounting is not possible when unit is with case cover, but if
¡
need to operate unit by (F) positioning with case cover, temperature / load derating is necessary. For more details, please contact
our sales or engineering departments.
85 90
B
CN1
CN1
CN1
Fig.3.18 Mounting method
3.3 Mounting screw
The mounting screw should be M3. The hatched area shows the
¡
allowance of metal parts for mounting.
If metallic fi ttings are used on the component side of the board,
¡
ensure there is no contact with surface mounted components.
This product uses SMD technology.
¡
Please avoid the PCB installation method which includes the twisting stress or the bending stress.
Recommendation to electrically connect FG to metal chassis for
*
reducing noise.
CN1
8
CN1
8
8
Fig.3.19 Allowance of metal parts for mounting
(LFA10F, LFA15F)
LFA30F, LFA50F, LFA75F, LFA100F,
¿
LFA150F
88
CN1
8
8
Fig.3.20 Allowance of metal parts for mounting
(LFA30F, LFA50F, LFA75F, LFA100F, LFA150F)
LFA240F, LFA300F
¿
88
CN1, TB1
8
8
8
8
Fig.3.21 Allowance of metal parts for mounting
(LFA240F, LFA300F)
3.4 Expectancy life and warranty
Expectancy Life.
¡
Table 3.10 Expectancy Life (LFA10F-
Mounting
Method
A, D , E , F Convection
B, C
A,B,C,D,E,F
Cooling
Method
Convection
Forced air
Average ambient
temperature (year)
Ta = 40C or less
Ta = 50C
Ta = 45C or less
Ta = 55C
Ta = 60C
Table 3.11 Expectancy Life (LFA15F-O)
Mounting
Method
A, B, C, D Convection
E , F Convection
A,B,C,D,E,F
Cooling
Method
Forced air
Average ambient
temperature (year)
Ta = 40C or less
Ta = 50C
Ta = 35C or less
Ta = 45C
Ta = 60C
O
)
Expectancy Life
Io[75%
6years 6years
5years 3years
6years 6years
5years 3years
5years 3years
Expectancy Life
Io[75%
6years 6years
5years 3years
6years 6years
5years 3years
5years 3years
Unit [mm]
88
8
8
Unit [mm]
88
8
8
Unit [mm]
75%<Io[100%
75%<Io[100%
LFA-28
AC-DC Power Supplies Open Frame/ Enclosed Type
Instruction Manual
Table 3.12 Expectancy Life (LFA30F-O)
Mounting
Method
A, B, C Convection
D, E, F Convection
A,B,C,D,E,F
Cooling
Method
Forced air
Average ambient
temperature (year)
Ta = 40C or less
Ta = 50C
Ta = 35C or less
Ta = 45C
Ta = 60C
Table 3.13 Expectancy Life (LFA50F-O)
Mounting
Method
B , D Convection
C, E
A,B,C,D,E,F
Cooling
Method
A Convection
Convection
F
Convection
Forced air
Average ambient
temperature (year)
Ta = 40C or less
Ta = 50C
Ta = 35C or less
Ta = 45C
Ta = 30C or less
Ta = 40C
Ta = 25C or less
Ta = 35C
Ta = 60C
Table 3.14 Expectancy Life (LFA75F-O)
Mounting
Method
A, B Convection
E, F
A,B,C,D,E,F
C
D
Cooling
Method
Convection
Convection
Convection
Forced air
Average ambient
temperature (year)
Ta = 40C or less
Ta = 50C
Ta = 35C or less
Ta = 45C
Ta = 30C or less
Ta = 40C
Ta = 20C or less
Ta = 30C
Ta = 60C
Table 3.15 Expectancy Life (LFA100F-O)
Mounting
Method
B, C Convection
D, E , F Convection
A,B,C,D,E,F
Cooling
Method
A Convection
Forced air
Average ambient
temperature (year)
Ta = 40C or less
Ta = 50C
Ta = 35C or less
Ta = 45C
Ta = 35C or less
Ta = 45C
Ta = 60C
Table 3.16 Expectancy Life (LFA150F-O)
Mounting
Method
D, F Convection
A,B,C,D,E,F
Cooling
Method
A Convection
B Convection
C Convection
E Convection
Forced air
Average ambient
temperature (year)
Ta = 30C or less
Ta = 40C
Ta = 25C or less
Ta = 35C
Ta = 25C or less
Ta = 35C
Ta = 25C or less
Ta = 25C or less
Ta = 60C
Expectancy Life
Io[75%
6years 6years
5years 3years
6years 6years
5years 3years
5years 3years
Io[75%
6years 6years
5years 3years
6years 6years
5years 3years
6years 6years
5years 3years
6years 6years
5years 3years
5years 3years
Io[75%
6years 6years
5years 3years
6years 6years
5years 3years
6years 6years
5years 3years
6years 6years
5years 3years
5years 3years
Io[75%
6years 6years
5years 3years
6years 6years
5years 3years
6years 6years
5years 3years
5years 3years
Io[75%
6years 6years
6years 5years
6years 6years
6years 6years
6years 6years
6years 5years
6years 6years
6years 5years
5years 5years
75%<Io[100%
Expectancy Life
75%<Io[100%
Expectancy Life
75%<Io[100%
Expectancy Life
75%<Io[100%
Expectancy Life
75%<Io[100%
Table 3.17 Expectancy Life (LFA240F-O)
Mounting
Method
B, C Convection
D, F
A,B,C,D,E,F
Cooling
Method
A Convection
Convection
E
Convection
Forced air
Average ambient
temperature (year)
Ta = 30C or less
Ta = 40C
Ta = 20C or less
Ta = 30C
Ta = 20C or less
Ta = 15C or less
Ta = 60C
Table 3.18 Expectancy Life (LFA300F-O)
Mounting
Method
B, C
E, F
A,B,C,D,E,F
Warranty
¡
Table 3.19 Warranty
Mounting
Method
A, D , E , F Convection
B , C Convection
A,B,C,D,E,F
Cooling
Method
A Convection
Convection
D
Convection
Convection
Forced air
Cooling
Method
Forced air
Average ambient
temperature (year)
Ta = 30C or less
Ta = 40C
Ta = 20C or less
Ta = 30C
Ta = 25C or less
Ta = 20C or less
Ta = 50C
(
LFA10F-O)
Average ambient
temperature (year)
Ta = 40C or less
Ta = 50C
Ta = 45C or less
Ta = 55C
Ta = 60C
Table 3.20 Warranty (LFA15F-O)
Mounting
Method
A, B , C , D Convection
E , F Convection
A,B,C,D,E,F
Cooling
Method
Forced air
Average ambient
temperature (year)
Ta = 40C or less
Ta = 50C
Ta = 35C or less
Ta = 45C
Ta = 60C
Table 3.21 Warranty (LFA30F-O)
Mounting
Method
A, B, C Convection
D, E, F Convection
A,B,C,D,E,F
Cooling
Method
Forced air
Average ambient
temperature (year)
Ta = 40C or less
Ta = 50C
Ta = 35C or less
Ta = 45C
Ta = 60C
Expectancy Life
Io[75%
6years 6years
5years 3years
6years 6years
5years 3years
6years 5years
6years 5years
5years 3years
Io[75%
6years 6years
5years 3years
6years 6years
5years 3years
6years 5years
6years 5years
5years 3years
Io[75%
5years 5years
5years 3years
5years 5years
5years 3years
5years 3years
Io[75%
5years 5years
5years 3years
5years 5years
5years 3years
5years 3years
Io[75%
5years 5years
5years 3years
5years 5years
5years 3years
5years 3years
75%<Io[100%
Expectancy Life
75%<Io[100%
Warranty
75%<Io[100%
Warranty
75%<Io[100%
Warranty
75%<Io[100%
LFA
LFA-29
AC-DC Power Supplies Open Frame/ Enclosed Type
Instruction Manual
Table 3.22 Warranty (LFA50F-O)
Mounting
Method
LFA
B , D Convection
C, E Convection
A,B,C,D,E,F
Cooling
Method
A Convection
F Convection
Forced air
Table 3.23 Warranty (LFA75F-O)
Mounting
Method
A, B Convection
E, F Convection
A,B,C,D,E,F
Cooling
Method
C Convection
D Convection
Forced air
Average ambient
temperature (year)
Ta = 40C or less
Ta = 50C
Ta = 35C or less
Ta = 45C
Ta = 30C or less
Ta = 40C
Ta = 25C or less
Ta = 35C
Ta = 60C
Average ambient
temperature (year)
Ta = 40C or less
Ta = 50C
Ta = 35C or less
Ta = 45C
Ta = 30C or less
Ta = 40C
Ta = 20C or less
Ta = 30C
Ta = 60C
Warranty
Io[75%
5years 5years
5years 3years
5years 5years
5years 3years
5years 5years
5years 3years
5years 5years
5years 3years
5years 3years
Io[75%
5years 5years
5years 3years
5years 5years
5years 3years
5years 5years
5years 3years
5years 5years
5years 3years
5years 3years
75%<Io[100%
Warranty
75%<Io[100%
Table 3.26 Warranty (LFA240F-O)
Mounting
Method
B, C Convection
D, F Convection
A,B,C,D,E,F
Cooling
Method
A Convection
E Convection
Forced air
Average ambient
temperature (year)
Ta = 30C or less
Ta = 40C
Ta = 20C or less
Ta = 30C
Ta = 20C or less
Ta = 15C or less
Ta = 60C
Table 3.27 Warranty (LFA300F-O)
Mounting
Method
B, C Convection
E
A,B,C,D,E,F
Cooling
Method
A Convection
D Convection
,
F Convection
Forced air
Average ambient
temperature (year)
Ta = 30C or less
Ta = 40C
Ta = 20C or less
Ta = 30C
Ta = 25C or less
Ta = 20C or less
Ta = 50C
Warranty
Io[75%
5years 5years
5years 3years
5years 5years
5years 3years
5years 3years
5years 3years
5years 3years
Io[75%
5years 5years
5years 3years
5years 5years
5years 3years
5years 3years
5years 3years
5years 3years
75%<Io[100%
Warranty
75%<Io[100%
Table 3.24 Warranty (LFA100F-O)
Mounting
Method
B, C Convection
D, E, F Convection
A,B,C,D,E,F
Cooling
Method
A Convection
Forced air
Average ambient
temperature (year)
Ta = 40C or less
Ta = 50C
Ta = 35C or less
Ta = 45C
Ta = 25C or less
Ta = 35C
Ta = 60C
Table 3.25 Warranty (LFA150F-O)
Mounting
Method
D, F Convection
A,B,C,D,E,F
Cooling
Method
A Convection
B Convection
C Convection
E Convection
Forced air
Average ambient
temperature (year)
Ta = 30C or less
Ta = 40C
Ta = 25C or less
Ta = 35C
Ta = 25C or less
Ta = 35C
Ta = 25C or less
Ta = 25C or less
Ta = 60C
Warranty
Io[75%
5years 5years
5years 3years
5years 5years
5years 3years
5years 5years
5years 3years
5years 3years
Io[75%
5years 5years
5years 5years
5years 5years
5years 5years
5years 5years
5years 3years
5years 5years
5years 3years
5years 3years
75%<Io[100%
Warranty
75%<Io[100%
4 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.
5 Option and Others
5.1 Outline of options
Please inquire us for details of specifi 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 units have coated internal PCB for better moisture
-
resistance.
LFA-30
AC-DC Power Supplies Open Frame/ Enclosed Type
Instruction Manual
-G
¿
Option -G units are low leakage current type.
-
Differences from standard versions are summarized in Table 5.1.
-
Table 5.1 Low leakage current type
Leakage Current
(AC240V 60Hz)
Conducted Noise N/A
Output Ripple Noise
This is the value that measured on measuring board with capaci-
*
tor of 22μF at 150mm from output connector.
Measured by 20MHz oscilloscope or Ripple-Noise meter (Equivalent
to KEISOKU-GIKEN:RM-103).
-H (LFA100F-24, LFA150F-24, LFA240F-24,
¿
Please contact us for details about
0.15mA max
Ripple Noise
LFA300F-24/30/36/48-TY)
Option -H units can output the peak current.
-
Peak load is possible to draw as below.
-
l
p
: peak current
l
ave
: average current
Output current [A]
t
1
t
2
Fig.5.1 Peak current
Input voltage is AC90V to AC264V.
t1[10[sec]
lp[rated peak current
lave[rated output current
t1
Duty =
t1+t2
In case of LFA300F duty is depended on peak wattage.
Please contact us about the detail.
Remarks:
There is possibility that an internal device is damaged when the
*
specifi cation is exceeded.
-J (LFA300F)
¿
Option -J units, the input and output connector are changed to
-
EP connectors (Mfr. Tyco Electronics).
The appearance in option -J units is defferent from the standard
-
untis. Please contact us about the detail.
-J1
¿
Option -J1 units, the Input and Output connector is VH connec-
-
tors (Mfr. J.S.T.).
LFA300F appearance of option -J units is defferent from the
-
standard appearance. Please contact us about the detail.
100[%] [35%
X
-S--SN
¿
-S indicates a type with chassis, and -SN indicates a type with
-
chassis and cover (Refer to external view). Refer to “Derating
Curves”in Section 3.2.
Please contact us about the detail of LFA300F.
-
-SNF (LFA300F-5/12/24-TY)
¿
In option -SNF, the cover, chassis and cooling fan are added.
-
The appearance of option -J units is defferent from the of stan-
-
dard appearance. Please contact us about the detail.
Oil and other chemical liquid splashing environment may cause
-
the performance degradation and failure.
-Y
¿
Option -Y units can adjust the output voltage by the potentiom-
-
eter is attached .
Refer to the adjustable range to the table 5.2 and table 5.3.
-
LFA10F, LFA15F, LFA30F, LFA50F, LFA75F
¡
Table 5.2 Output voltage adjustment range
Output voltage Output voltage adjustment range[V]
3.3V*
5V 4.5 to 5.5
12V 10.8 to 13.2
15V 13.5 to 16.5
24V 21.6 to 26.4
36V 32.4 to 39.6
48V 43.2 to 52.8
Some of the product, -Y is standard equipment.
*
(LFA10F-3R3-Y,LFA15F-3R3-Y,LFA30F-3R3-Y,
LFA50F-3R3-Y,LFA75F-3R3-Y)
LFA100F, LFA150F, LFA240F, LFA300F
¡
Table 5.3 Output voltage adjustment range
Output voltage Output voltage adjustment range[V]
3.3V*
5V*
12V 10.8 to 13.2
15V 13.5 to 16.5
24V 21.6 to 27.5
30V (LFA300F) 27.0 to 33.0
36V 32.4 to 39.6
48V 39.6 to 52.8
Some of the product, -Y is standard equipment.
*
(LFA100F-3R3-Y, LFA100F-5-Y,
LFA150F-3R3-Y, LFA150F-5-Y, LFA300F-O-TY)
To increase an 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 potenti-
-
ometer, because there is possibility of electric shock and the
breakdown as contacting to other internal circui by telectrically
conductive tool.
2.85 to 3.63
2.85 to 3.63
4.5 to 5.5
LFA
LFA-31
AC-DC Power Supplies Open Frame/ Enclosed Type
Instruction Manual
-R (LFA100F, LFA150F, LFA240F, LFA300F)
¿
You can control output ON/OFF remotely in Option -R units. To
-
LFA
do so, connect an external DC power supply and apply a voltage to a remote ON/OFF connector, which is available as option.
Built-in
Model Name
LFA100F, LFA150F,
LFA240F, LFA300F
External Power
Source
Remote ON/OFF connector (Optional)
Fig.5.2 Example of using a remote ON/OFF circuit
Dedicated harnesses are available for your purchase. Please
-
see Optional Parts for details.
1 If the output of an external power supply is within the range
*
of 4.5 - 12.5V, you do not need a current limiting resistor R. If
the output exceeds 12.5V, however, please connect the current limiting resistor R.
To calculate a current limiting resistance value, please use the following equation.
Vcc-(1.1+RiX0.005)
R[W]=
Please wire carefully. If you wire wrongly, the internal components
*
of a unit may be damaged.
Remote ON/OFF circuits (RC+ and RC-) are isolated from input,
¡
output and FG.
Resistor
Ri [ W ]
Input Current
0.005
Voltage between RC (+)
and RC (-) [V]
Output ON Output OFF
780 4.5 - 12.5 0 - 0.5 20max
Inside of a Power
(+)
(-)
1
2
Supply
SW
*1
R
RC
RC
Ri
Input
Current
[mA]
-T (LFA240F, LFA300F)
¿
Option -T units have vertically positioned screws on a terminal
-
block.
Please contact us for details about appearance.
-
FG
AC (N)
AC (L)
Fig.5.3 Example of option -T
The screw can be held to terminal block by inserting and lifting the
¡
screwdriver from the side of terminal block.
+ screwdriver
screw
terminal block
f5.5MAX
Fig.5.4 lifting method
-T1 (LFA300F)
¿
Option -T units have horizontally positioned screws on a termi-
-
nal block.
Please contact us for details about appearance.
-
FG
AC (N)
AC (L)
-V
+V
-V
+V
-R2 (LFA100F, LF A150F, LF A240F, LF A300F)
¿
The usege is the same as option -R, please refer to Option -R.
-
Reducing standby power is possible by OFF signal of the re-
-
mote control.
Start up time by ON signal in remote control is 350ms(typ).
-
The latch condition in overvoltage protection is removed by tog-
-
gling ON/OFF signal of remote control.
Standby power
-
LFA100F,LFA150F,LFA240F
0.2Wtyp (AC100V), 0.7Wtyp (AC200V)
LFA300F
0.25Wtyp (AC100V), 1.1Wtyp (AC200V)
LFA-32
Fig.5.5 Example of option -T1
5.2 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.
-
AC-DC Power Supplies Open Frame/ Enclosed Type
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.
When a mass capacitor is connected with the output terminal
¡
(load side), the output might become the stop or an unstable operation. Please contact us for details when you connect the capacitor.
LFA10F, LFA15F
¿
When these power supplies are connected to the input terminal in
¡
parallel, the total capacitance between line and line becomes big.
Therefore, the electrical discharge resistance on the safety stan-
dard might become necessary.
Please contact us for details when safety standard is necessary at
multiple units usage.
Instruction Manual
LFA
LFA-33
Loading...