®
LOS, LOR, LOK4000 Series Data Sheet
DIN-Rail Mountable AC-DC (DC-DC) Converters
15, 30, 50 Watt AC-DC (DC-DC) Converters Convert Simply
Features
• RoHS lead-free-solder
products available
and
lead-solder-exempted
• Universal input range 100 – 240 VAC nominal
• Additional DC input 90 – 250 VDC
• Class I equipment
• Single output 5.1, 12, 24, or 48 VDC
• Extremely compact design
• Battery charger versions
• Operating ambient temperature range –10 to 50 °C
with convection cooling
• Short-circuit and no-load proof
Safety according to IEC/EN 60950-1
1
, UL/CSA 60950-1,
and UL 508
2
1
PRODUCT SERVICE
2
P
roduction monitored
T
ype tested
1
LOK
2
LOS/LOR
Description
The Convert Simply front-end converters represent a family of
15, 30, and 50 watt DIN-rail mountable AC-DC converters for
use as rectifiers or battery chargers. Plastic casing, compact
size, and high reliability make the LOS, LOR, LOK4000 Series
an excellent choice for space-critical applications, where a
DIN-Rail mountable AC-DC converter is required. The
universal input range and a built-in input filter allow flexible
operation in a wide variety of electronic equipment and
enables worldwide connection to the mains.
The converters are available as rectifiers with 12 V, 24 V, or 48
V single output and as battery chargers for 12 V, 24 V, or 48 V
batteries. The output voltage of LOK converters can be
adjusted via the R input.
Safety approvals fully comply with worldwide requirements.
Applications
Typical applications are: powering building controls, factory
automation, industrial controls, instrumentation, electromag-
netic drives, fans, and other DC loads.
Table of Contents
Page
Page
Electromagnetic Compatibility (EMC) .............................. 7
Mechanical Data .............................................................. 8
Immunity to Environmental Conditions ............................. 8
Safety and Installation Instructions .................................. 9
Description of Options .................................................... 11
EC Declaration of Conformity LOS/LOR ........................ 12
Description ....................................................................... 1
Model Selection ............................................................... 2
Functional Description ..................................................... 3
Electrical Input Data ......................................................... 3
Electrical Output Data ...................................................... 4
Auxiliary Functions ........................................................... 6
BCD20035-G Rev AA, 25-Feb-09
Page 1 of 12
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®
LOS, LOR, LOK4000 Series Data Sheet
DIN-Rail Mountable AC-DC (DC-DC) Converters
Model Selection
Table 1: Type survey
Output
V
o nom
[VDC]
5.1
12
12
12
12 - 12.84
3
- 15
24
24
24
24 - 25.7
3
- 30
48
48 - 51.4
3
- 60
1
2
3
4
5
I
o nom
[A]
5.2
1.25
2.5
4
3.6
0.65
1.25
2
1.8
1
0.9
Operating
input voltage
1
85 - 264 VAC
47 - 63 Hz
90 - 250 VDC
Rated power
1
T
A
= 50 °C
P
o tot
[W]
26
15
30
48
49
15
30
48
49
48
49
Efficiency
5
η
typ
[%]
70
74
80
82
82
76
82
82
82
82
81
Model
Options
4
LOK4001-2RLD
LOS4301-2
LOR4301-2
LOK4301-2R
LOK4140-2RLD
LOS4601-2
LOR4601-2
LOK4601-2R
LOK4240-2RLD
LOK4801-2R
LOK4740-2RLD
F
2
, K, G
Linear derating to 85% of
P
o nom
below
V
i
= 105 VAC, 110 VDC
LOK types only
Setting voltage
V
o set
for battery chargers with R-input left open-circuit.
For minimum order quantities and lead times contact Power-One.
Efficiency at
V
i rated
and
I
o nom
Models in yellow (or shaded) are not recommended for new designs.
Part Number Description
LOK 4 3 0 1 -2 R L D F K G
Series
15 W .................................................... LOS 4
30 W .................................................... LOR 4
50 W .................................................... LOK 4
5.1 V rectifier version ............................... 001
12 V rectifier version ................................ 301
24 V rectifier version ................................ 601
48 V rectifier version ................................ 801
12 – 15 V battery charger ........................ 140
24 – 30 V battery charger ........................ 240
48 – 60 V battery charger ........................ 740
other voltages or specs. .................... 02 – 99
Output
Ambient temperature range
T
A
:
–10 to 50 °C ............................................... -2
3
Features and options:
Output voltage control input ........................ R
Rectangular output characteristic ................ L
Output voltage OK signal ............................ D
Built-in second fuse (option) ........................ F
K system connector (option) ........................ K
RoHS compliant for all 6 substances .......... G
1
2
3
4
2
1
1
2
4
Battery chargers and LOK4001-2RLD
LOK models only
Up to 70 °C with derating
G is always placed at the end of the part number.
Examples: LOK4140-2RLD: AC-DC converter, battery charger version, providing 12 - 15 V/3.6 A at the output
LOK4601-2R: AC-DC converter, rectifier version, providing 24 V/2 A, 48 W at the output
BCD20035-G Rev AA, 25-Feb-09
Page 2 of 12
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®
LOS, LOR, LOK4000 Series Data Sheet
DIN-Rail Mountable AC-DC (DC-DC) Converters
Functional Description
The Convert Simply 15, 30, and 50 watt front-end modules are
flyback converters with a fixed frequency of 100 kHz (LOK) or
130 kHz (LOR, LOS). The battery charger modules and the
LOK4001-2RLD have a rectangular
V/I
output characteristic.
The rectifier modules have overload protection working in a
hiccup mode.
03095
03094
Line filter and rectifier
L
1
2
4
Vo+
5 Vo+
2
Line filter and rectifier
switching device
and control circuit
L
1
switching device
and control circuit
5 Vo+
6 Vo–
7
Vo–
R
N
3
opt. F
6 Vo–
7 Vo–
N
3
opt. F
NTC
8
NTC
8 R
4 D
Fig. 1
Block diagram LOK4301, LOK4601 and 4801 (rectifier
versions), all LOR and all LOS.
Fig. 2
Block diagram LOK4140, LOK4240 and LOK4740 (battery
charger versions) and LOK4001- 2RLD.
Electrical Input Data
General Condition:
T
A
= 25 °C unless otherwise specified
Table 2: Input data
Characteristics
V
i rated
V
i nom
V
i
Rated input voltage range
Nominal input voltage
Operating input voltage range
Nominal line frequency
Input current at 115/230 VAC
1
Input current at 230 VAC and no load
Peak inrush current at
V
i
= 230 V
2
LOS
100 - 240
230
85 - 264
90 - 250
50 - 60
0.3/0.15
18
LOR
100 - 240
230
85 - 264
90 - 250
50 - 60
0.52/0.26
18
LOK
100 - 240
230
85 - 264
90 - 250
50 - 60
0.8/0.4
0.035
19
Unit
VAC
VDC
Hz
A
f
i
I
i
l
i nl
l
inr max
1
2
At
I
o nom
.
Inrush current limitation by a 16
Ω
NTC resistor.
BCD20035-G Rev AA, 25-Feb-09
Page 3 of 12
www.power-one.com
®
LOS, LOR, LOK4000 Series Data Sheet
DIN-Rail Mountable AC-DC (DC-DC) Converters
Electrical Output Data
General Conditions:
T
A
= 25 °C unless otherwise specified. R input not connected.
Table 3a: Output data
Output
Characteristics
V
o
Output voltageV
o nom
V
o
setting tolerance
V
o adj
I
o nom
Adjustable voltage range
Nominal output current
Conditions
V
i nom,
0.5
I
o nom
R-input open-circuit
Units with feature R
V
i min
-
V
i max
LOS
LOR
LOK
-
-
5.2
50
±1
±5
4
14/90
±0.05
100
14/90
±0.05
100
1
LOK4001-2RLD LOS/LOR/LOK LOS/LOR/LOK LOK4801-2R
4301-2(R)
4601-2(R)
min
typ max min
5.1
±1.5
4.5 - 5.5
1.25
2.5
4.0
100 150
±1
±2
4
14/90
±0.05
100
1
typ max min
12
±1.5
10.8 - 13.2
0.65
1.25
2.0
100 150
±1
±1.5
4
14/90
±0.05
100
typ max min typ max
24
±1.5
21.6 - 26.4
-
-
1.0
200
±1
±1
4
ms
%/K
kHz
48
±1.5
43.2 - 52.8
Unit
V
%
V
A
v
o
Output voltage noise
(BW = 20 M Hz)
Static line/load regulation
V
i nom
,
I
o nom,
IEC 61200
V
i min
-
V
i max,
I
o
= (0.1 - 1)
I
o nom
V
i nom
, (0.1
×
0.9)
I
o nom
I
o
= (0.1
×
0.9)
I
o nom
115/230 VAC
V
i nom
, I
o nom
mV
pp
%
V
o I
t
r
t
h
α
Uo
f
s
1
Dynamic load regulation
Transient recovery time
Hold-up time
Temper. coefficient of
V
o
Switching frequency
LOR and LOS have 130 kHz.
Table 3b: Output data (battery charger models)
Output
Characteristics
V
o
V
o adj
I
o nom
v
o
Output voltage
Adjustable voltage range
Nominal output current
Output voltage noise
(BW = 20 MHz)
Static line/load regulation
V
o I
t
r
t
h
α
Uo
f
s
1
LOK4140-2RLD
Conditions
V
i nom
, 0.5
I
o nom
R-input open-circuit
V
i min
-
V
i max
V
i nom
,
I
o nom
IEC 61204
V
i min
-
V
i max
I
o
= (0.1 - 1)
I
o nom
V
I nom
, (0.1
×
0.9)
I
o nom
I
o
= (0.1
×
0.9)
I
o nom
115/230 VAC
V
i nom
, I
o nom
14/90
±0.05
1
100
min
typ
12.84
1
12.0 - 15.0
3.6
100
150
max
LOK4240-2RLD
min
typ
25.68
1
24.0 - 30.0
1.8
100
150
max
LOK4740-2RLD
min
typ
51.36
1
48.0 - 60.0
0.9
200
A
mV
pp
±1
1
±1
1
4
14/90
±0.05
1
100
ms
%/K
kHz
max
Unit
V
±2
1
±2
1
4
14/90
±0.05
1
100
±1
1
±1.5
1
4
%
Dynamic load regulation
Transient recovery time
Hold-up time
Temper. coefficient of
V
o
Switching frequency
R input left open-circuit.
BCD20035-G Rev AA, 25-Feb-09
Page 4 of 12
www.power-one.com
®
LOS, LOR, LOK4000 Series Data Sheet
DIN-Rail Mountable AC-DC (DC-DC) Converters
Thermal Considerations
If an AC-DC converter is located in free, quasi-stationary air
(convection cooling) at the indicated maximum ambient
temperature
T
A max
(see table:
Temperature specifications)
and
is operated at its nominal input voltage and output power, the
temperature measured at the
Measuring point of case
temperature T
C
(see
Mechanical Data)
will approach the
indicated value
T
C max
after the warm-up phase. However, the
relationship between
T
A
and
T
C
depends heavily on the
conditions of operation and integration into a system. The
thermal conditions are influenced by input voltage, output
current, airflow, temperature of surrounding components and
surfaces.
T
A max
is therefore, contrary to
T
C max
, an indicative
value only.
The relation between the maximum allowed output power
P
o allowed
and the temperature
T
A
of the surrounding air is given
in the figure below. The rates apply if the AC-DC converter is
located in free, quasi-stationary air (convection cooling).
Note:
Sufficient forced cooling allows
T
A
to be higher than the
value given in the table if
T
C max
according to the table is not
exceeded.
Caution:
The installer must ensure that under all operating
conditions
T
C
remains within the limits that are stated in the table
Temperature specifications.
P
o allowed
/P
o nom
1.0
05155a
Output Power at Low Input Voltage
The output power of LOK models must be derated at low input
voltage, see figure below.
P
o allowed
/P
o nom
1.0
0.85
05154a
0.5
0
50
V
i
75 100 125 150 175 200 225 250 275 300 VAC
Fig. 3
Maximum allowed output power versus input voltage at
T
A
= 50 °C for LOK models operated in vertical position
Output Protection
Battery charger versions LOK4140-, 4240-, LOK4740-2RLD,
and the LOK4001-2RLD have a rectangular current limitation
characteristic, which limits the output current to within 100 and
150% of
I
o nom
. The other models are protected against
overload by a current limiting circuit, which shuts down the
converter in overload condition. It automatically restarts after
removal of the overload condition (hiccup mode).
All models are short-circuit and no-load proof.
0.5
0.45
Outputs Connected in Series
Two or more converters supplying the same or different output
voltages may be connected in series. The value of the
maximum output current to be taken is defined by that unit
providing the lowest current limiting value. It should be assured
that the outputs do not feed backwards into each other caused
by their different rise/fall times at switch-on/off cycles by adding
reverse polarity diodes across each output.
Parallel Operation
Only possible with battery charger versions.
The outputs of several battery charger models with equal
output voltage (e.g. several LOK4240-2RLD) may be
connected in parallel.
0
–10
0
10
20
30
40
50
60
T
A
70 °C
Fig. 4
Maximum allowed output power versus ambient temperature
at V
i
>105 VAC for LOK models, operated in vertical position
BCD20035-G Rev AA, 25-Feb-09
Page 5 of 12
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