Omron S8EA Series User manual

1
New Product
Switch Mode Power Supply
S8EA (50, 75, 100, and 150-W Models)
Board-type Switch Mode Power Supply with Simple Circuits
That Concentrate on Basic Functions for Easy Operation
Exclusive Use for 100 VAC
Lineup
• Lineup of 5, 12, and 24-VDC models includes open-frame
models, models with chassis, and models with chassis and
covers.
• Options (low leakage current, or coating) are available for
open-frame models for a wide range of application.
Features
• The top class*in industry for compact size.
* According to OMRON investigation in December 2012.
• 150% boost current output (only for 24-V output)
• Simple circuits (no power factor improvement circuit and only
for 100 to 120 VAC).
• Operation is possible at an ambient temperature of 60°C at
60% load,* which is ideal for compact devices.
* Open-frame models with standard installation.
Approved standards:
UL60950-1
cUR: CSA C22.2 No.60950-1,
EN50178, EN60950-1
Model Number Structure
Model Number Legend
Note: Not all combinations are possible. Refer to List of Models in Ordering Information on page 2.
S8EA--@@@@@@@@-@
Series name 1 2 3 4 5 6
1. Power Boost Function
Blank: None
B: Power boost for output current
2. Power Factor Improvement Function
N: None
3. Power Rating
050: 50 W
075: 75 W
100: 100 W
150: 150 W
4. Output Voltage
05: 5 V
12: 12 V
24: 24 V
5. Configuration
None: Open-frame
L: With chassis
LC: With chassis and cover
6. Option
None: Standard model
G: Low leakage current
C: Coating (one side)
Note: This option is applicable only for open-frame models
Refer to Safety Precautions on page 15.

S8EA
2
Ordering Information
List of Models
Note: For details on normal stock models, contact your nearest OMRON representative.
Note: The input voltage is 100 to 240 VAC for all models.
Power rating Output voltage Output current Boost current Model
50 W
5 V 10 A --- S8EA-N05005
12 V 4.3 A --- S8EA-N05012
24 V 2.5 A 3.8 A S8EA-BN05024
75 W
5 V 15 A --- S8EA-N07505
12 V 6.3 A --- S8EA-N07512
24 V 3.2 A 4.8 A S8EA-BN07524
100 W
5 V 20 A --- S8EA-N10005
12 V 8.5 A --- S8EA-N10012
24 V 4.3 A 6.5 A S8EA-BN10024
150 W
5 V 30 A --- S8EA-N15005
12 V 12.5 A --- S8EA-N15012
24 V 6.3 A 9.5 A S8EA-BN15024
Power rating Output voltage Output current Boost current Model
50 W
5 V 10 A --- S8EA-N05005L
12 V 4.3 A --- S8EA-N05012L
24 V 2.5 A 3.8 A S8EA-BN05024L
75 W
5 V 15 A --- S8EA-N07505L
12 V 6.3 A --- S8EA-N07512L
24 V 3.2 A 4.8 A S8EA-BN07524L
100 W
5 V 20 A --- S8EA-N10005L
12 V 8.5 A --- S8EA-N10012L
24 V 4.3 A 6.5 A S8EA-BN10024L
150 W
5 V 30 A --- S8EA-N15005L
12 V 12.5 A --- S8EA-N15012L
24 V 6.3 A 9.5 A S8EA-BN15024L
Power rating Output voltage Output current Boost current Model
50 W
5 V 10 A --- S8EA-N05005LC
12 V 4.3 A --- S8EA-N05012LC
24 V 2.5 A 3.8 A S8EA-BN05024LC
75 W
5 V 15 A --- S8EA-N07505LC
12 V 6.3 A --- S8EA-N07512LC
24 V 3.2 A 4.8 A S8EA-BN07524LC
100 W
5 V 20 A --- S8EA-N10005LC
12 V 8.5 A --- S8EA-N10012LC
24 V 4.3 A 6.5 A S8EA-BN10024LC
150 W
5 V 30 A --- S8EA-N15005LC
12 V 12.5 A --- S8EA-N15012LC
24 V 6.3 A 9.5 A S8EA-BN15024LC
Open frame
With chassis
With chassis and cover

S8EA
3
Ratings, Characteristics, and Functions
*1. Do not use an inverter output for the Power Supply. Inverters with an output frequency of 50/60 Hz are available, but the rise in the internal
temperature of the Power Supply may result in ignition or burning.
*2. For details, refer to Output Voltage Adjuster (V. ADJ) on page 16.
*3. Specified for the rated input voltage (100 VAC) and a 100% load.
The measurement method is based on JEITA standard RC-9131B.
For details, refer to Ripple Noise Voltage on page 17.
*4. To reset the protection, turn OFF the input power for three minutes or longer and then turn it back ON.
*5. The weight is for an open-frame model.
*6. The range for compliance with EC Directives and safety standards (UL, EN, etc.) is 100 to 120 VAC (85 to 132 VAC).
*7. Class B compliance was met with an aluminum plate placed under the Power Supply.
*8. Excluding models with low leakage current.
Power rating 50 W 75 W
Item Output voltage 5 V 12 V 24 V 5 V 12 V 24 V
Efficiency (Typ.) 100 VAC input 78% 84% 85% 83% 85% 88%
Input
Voltage*1100 to 120 VAC (allowable voltage: 85 to 132 VAC, 120 to 175 VDC*6)
Frequency*150/60 Hz (47 to 63 Hz)
Current (Typ.) 100 VAC input 1.3 A 1.4 A 1.6 A
Power factor ---
Harmonic current emissions ---
Leakage current 100 VAC input 0.5 mA max. (model with low leakage current: 0.1 mA max.)
Inrush current 100 VAC input 17.5 A max.
Output
Voltage adjustment range*2±10% (with V. ADJ)
Ripple*3150 mV max. 240 mV max. 480 mV max. 150 mV max. 240 mV max. 480 mV max.
Input variation influence ±1% max. (with 100 VAC input at 100% load) ±1% max. (with 100 VAC input at 100% load)
Load variation influence 2% max. 1.5% max. 2% max. 1.5% max.
Temperature variation influence 0.05%/°C max.
Startup time (Typ.) 100 VAC input 400 ms 550 ms
Hold time (Typ.) 100 VAC input 20 ms 25 ms
Additional
functions
Overload protection 105% to 160% of rated load current, voltage drop, intermittent, automatic reset
Overvoltage protection*4Yes (at 130% or higher of rated output)
Series operation Yes (For up to two Power Supplies; external diodes required.)
Parallel operation No
Other
Ambient operating temperature −10 to 60°C (Derating is required according to the temperature.) (with no icing or condensation)
Storage temperature −25 to 75°C
Ambient operating humidity 25% to 85% (Storage humidity: 25% to 90%)
Dielectric strength
3.0 kVAC for 1 min. (between all inputs and outputs; Cutoff current: 10 mA)
2.0 kVAC for 1 min. (between all inputs and PE; Cutoff current: 10 mA)
1.0 kVAC for 1 min. (between all outputs and PE; Cutoff current: 20 mA)
Insulation resistance 100 MΩmin. (between all outputs and all inputs/PE)
Vibration resistance 10 to 55 Hz, 19.6 m/s2(2 G) for 1 h each in X, Y, and Z directions
Shock resistance 196.1 m/s2, 3 times each in ±X, ±Y, ±Z directions
Conducted emissions Conforms to EN 55011 Group 1 Class B *7 *8
Radiated emissions Conforms to EN 55011 Group 1 Class B *7 *8
Approved standards
UL UR: UL 60950-1 (Recognition)
cUR: CSA C22.2 No. 60950-1
EN: EN 50178 and EN 60950-1
SEMI ---
Weight *5140 g max. (without chassis and cover) 190 g max. (without chassis and cover)

S8EA
4
*1. Do not use an inverter output for the Power Supply. Inverters with an output frequency of 50/60 Hz are available, but the rise in the internal
temperature of the Power Supply may result in ignition or burning.
*2. For details, refer to Output Voltage Adjuster (V. ADJ) on page 16.
*3. Specified for the rated input voltage (100 VAC) and a 100% load.
The measurement method is based on JEITA standard RC-9131B.
For details, refer to Ripple Noise Voltage on page 17.
*4. To reset the protection, turn OFF the input power for three minutes or longer and then turn it back ON.
*5. The weight is for an open-frame model.
*6. The range for compliance with EC Directives and safety standards (UL, EN, etc.) is 100 to 120 VAC (85 to 132 VAC).
*7. Class B compliance was met with an aluminum plate placed under the Power Supply.
*8. Excluding models with low leakage current.
Power rating 100 W 150 W
Item Output voltage 5 V 12 V 24 V 5 V 12 V 24 V
Efficiency (Typ.) 100 VAC input 79% 85% 83% 81% 85% 87%
Input
Voltage*1100 to 120 VAC (allowable voltage: 85 to 132 VAC, 120 to 175 VDC*6)
Frequency*150/60 Hz (47 to 63 Hz)
Current (Typ.) 100 VAC input 2.1A 3.3A
Power factor ---
Harmonic current emissions ---
Leakage current 100 VAC input 0.5 mA max. (model with low leakage current: 0.1 mA max.)
Inrush current 100 VAC input 17.5 A max.
Output
Voltage adjustment range*2±10% (with V. ADJ)
Ripple*3150 mV max. 240 mV max. 480 mV max. 150 mV max. 240 mV max. 480 mV max.
Input variation influence ±1% max. (with 85 to 132 VAC input at 100% load)
Load variation influence 2% max. 1.5% max. 2% max. 1.5% max.
Temperature variation influence 0.05%/°C max.
Startup time (Typ.) 100 VAC input 550 ms 350 ms
Hold time (Typ.) 100 VAC input 20 ms 25 ms
Additional
functions
Overload protection 105% to 160% of rated load current, voltage drop, intermittent, automatic reset
Overvoltage protection*4Yes (at 130% or higher of rated output)
Series operation Yes (For up to two Power Supplies; external diodes required.)
Parallel operation No
Other
Ambient operating temperature −10 to 60°C (Derating is required according to the
temperature.) (with no icing or condensation)
5 V: −10 to 60°C (Derating is required according to
the temperature.)
12/24 V: −10 to 70°C (Derating is required according
to the temperature.)
(with no icing or condensation)
Storage temperature −25 to 75°C
Ambient operating humidity 25% to 85% (Storage humidity: 25% to 90%)
Dielectric strength
3.0 kVAC for 1 min. (between all inputs and outputs; Cutoff current: 10 mA)
2.0 kVAC for 1 min. (between all inputs and PE; Cutoff current: 10 mA)
1.0 kVAC for 1 min. (between all outputs and PE; Cutoff current: 20 mA)
Insulation resistance 100 MΩmin. (between all outputs and all inputs/PE)
Vibration resistance 10 to 55 Hz, 19.6 m/s2(2 G) for 1 h each in X, Y, and Z directions
Shock resistance 196.1 m/s2, 3 times each in ±X, ±Y, ±Z directions
Conducted emissions Conforms to EN 55011 Group 1 Class B *7 *8
Radiated emissions Conforms to EN 55011 Group 1 Class B *7 *8
Approved standards
UL UR: UL 60950-1 (Recognition)
cUR: CSA C22.2 No. 60950-1
EN: EN 50178 and EN 60950-1
SEMI ---
Weight*5250 g max. (without chassis and cover) 320 g max. (without chassis and cover)

S8EA
5
Connections
Block Diagram
Voltage
detection
Photocoupler
Overvoltage
detection
circuit
Control circuit
+V
−V
DC OUTPUT
Overcurrent
detection
circuit
Noise
filter
Fuse*
AC(L)
INPUT
AC(N)
Rectifier Smoothing
circuit
Rectifier/smoothing circuit
*S8EA-@N050@@:3.15 A
S8EA-@N075@@:4.0 A
S8EA-@N100@@:5.0 A
S8EA-@N150@@:8.0 A
Inrush
current
protection
S8EA-@N050@@ (50 W)
S8EA-@N075@@ (75 W)
S8EA-@N100@@ (100 W)
S8EA-@N150@@ (150 W)

S8EA
6
Construction and Nomenclature
Nomenclature
Input and Output Connectors
Note: The female connectors that are required for wiring are not provided with the Power Supply.
Special Harnesses
Applicable Models and Harness Models
Applicable
connector Housing Terminals Applicable crimp tool
Input side All models CN1 B3P5-VH (LF) (SN) VHR-5N
Reel: SVH-21T-P1.1
Bulk: BVH-21T-P1.1 YC-160R
Output side S8EA-@N050@@@@ CN51 B4P-VH (LF) (SN) VHR-4N
Output side S8EA-@N075@@@@ CN51 B6P-VH (LF) (SN) VHR-6N
Output side S8EA-@N100@@@@ CN51 B8P-VH (LF) (SN) VHR-8N
Output side S8EA-@N150@@@@ CN51 B6P-VH (LF) (SN) VHR-6N
Output side CN52 B7P-VH (LF) (SN) VHR-7N
Manufacturer J.S.T. Mfg. Co., Ltd.
Applicable models (S8EA Series) Connected to Model Qty
50 W 75 W 100 W 150 W Input/output side Output (+, -)
OK OK OK OK Input side S82Y-EX01HI-01
1
OK Output side
Output (±), common
S82Y-EX01HO-01
OK Output side S82Y-EX06HO-01
OK Output side S82Y-EX03HO-01
OK Output side Output side + S82Y-EX04HO-01
OK Output side Output side - S82Y-EX05HO-01
OK OK OK OK Input side S82Y-EX01HI-10
10
OK Output side
Output (±), common
S82Y-EX01HO-10
OK Output side S82Y-EX06HO-10
OK Output side S82Y-EX03HO-10
OK Output side Output side + S82Y-EX04HO-10
OK Output side Output side - S82Y-EX05HO-10
S8EA-@N050@@@@
S8EA-@N075@@@@
S8EA-@N100@@@@
S8EA-@N150@@@@
CN51
CN51
CN51
CN51
CN1
CN1
CN1
CN1
1
2
5
1
5
2
1
2
5
1
2
5
6
6
6
6
3
4
4
3
4
3
3
4
CN52
*1. The fuse is located on the (L) side. It is NOT user-replaceable. For a DC power
input, connect the low side to the positive (+) terminal.
Safety standards do not apply for a DC input.
*2. This is the protective earth terminal specified in the safety standards. Always
ground this terminal.
No. Name Function
1 Input Terminals (L), (N) Connect the input lines to these terminals.*1
2Protective Earth Terminal (PE)
() Connect the ground line to this terminal.*2
3 DC Output Terminals (−V), (+V) Connect the load lines to these terminals.
4 Output Voltage Adjuster (V. ADJ) It is possible to increase or decrease the
output voltage.
5Chassis
6 Cover

S8EA
7
Harness Specifications
Chassis cover option
Model Connector structure Shape Applicable wires
S82Y-EX01HI-@@
Housing
Model: VHR-5N
Manufacturer: J.S.T. Mfg. Co., Ltd.
Pins
Model: SVH-21T-P1.1
Manufacturer: J.S.T. Mfg. Co., Ltd.
Pin Wire AWG Color Length: L
(mm)
1 UL1015 18 Black 500
2NC
3 UL1015 18 White 500
4NC
5 UL1015 18 Green 500
S82Y-EX01HO-@@
Housing
Model: VHR-4N
Manufacturer: J.S.T. Mfg. Co., Ltd.
Pins
Model: SVH-21T-P1.1
Manufacturer: J.S.T. Mfg. Co., Ltd.
Pin Wire AWG Color Length: L
(mm)
1 UL1015 18 Black 500
2 UL1015 18 Black 500
3 UL1015 18 Red 500
4 UL1015 18 Red 500
S82Y-EX03HO-@@
Housing
Model: VHR-8N
Manufacturer: J.S.T. Mfg. Co., Ltd.
Pins
Model: SVH-21T-P1.1
Manufacturer: J.S.T. Mfg. Co., Ltd.
Pin Wire AWG Color Length: L
(mm)
1 UL1015 18 Black 500
2 UL1015 18 Black 500
3 UL1015 18 Black 500
4 UL1015 18 Black 500
5 UL1015 18 Red 500
6 UL1015 18 Red 500
7 UL1015 18 Red 500
8 UL1015 18 Red 500
S82Y-EX04HO-@@
Housing
Model: VHR-6N
Manufacturer: J.S.T. Mfg. Co., Ltd.
Pins
Model: SVH-21T-P1.1
Manufacturer: J.S.T. Mfg. Co., Ltd.
Pin Wire AWG Color Length: L
(mm)
1 UL1015 18 Red 500
2 UL1015 18 Red 500
3 UL1015 18 Red 500
4 UL1015 18 Red 500
5 UL1015 18 Red 500
6 UL1015 18 Red 500
S82Y-EX05HO-@@
Housing
Model: VHR-7N
Manufacturer: J.S.T. Mfg. Co., Ltd.
Pins
Model: SVH-21T-P1.1
Manufacturer: J.S.T. Mfg. Co., Ltd.
Pin Wire AWG Color Length: L
(mm)
1 UL1015 18 Black 500
2 UL1015 18 Black 500
3 UL1015 18 Black 500
4 UL1015 18 Black 500
5 UL1015 18 Black 500
6 UL1015 18 Black 500
7 UL1015 18 Black 500
S82Y-EX06HO-@@
Housing
Model: VHR-6N
Manufacturer: J.S.T. Mfg. Co., Ltd.
Pins
Model: SVH-21T-P1.1
Manufacturer: J.S.T. Mfg. Co., Ltd.
Pin Wire AWG Color Length: L
(mm)
1 UL1015 18 Black 500
2 UL1015 18 Black 500
3 UL1015 18 Black 500
4 UL1015 18 Red 500
5 UL1015 18 Red 500
6 UL1015 18 Red 500
Applicable models Model number
50W S82Y-EX050LC
75W S82Y-EX075LC
100W S82Y-EX100LC
150W S82Y-EX150LC
2
1
3
4
5
L+50
−0
2
1
3
4
L+50
−0
2
1
3
4
5
6
7
8
L+50
−0
2
1
3
4
5
6
L+50
−0
2
1
3
4
5
6
7
L+50
−0
2
1
3
4
5
6
L+50
−0

S8EA
8
Engineering Data
Derating Curves
Open-frame Models and Models with Chassis: 50 W and 5 V or 12 V Models with Chassis and Cover: 50 W and 5 V or 12 V
Open-frame Models and Models with Chassis: 50 W and 24 V Models with Chassis and Cover: 50 W and 24 V
Open-frame Models and Models with Chassis: 75 W Models with Chassis and Cover: 75 W
Open-frame Models and Models with Chassis: 100W Models with Chassis and Cover: 100W
Mounting method A
Mounting methods B to D
Mounting method E
−10 0 10 20 30 40 50 60 70 80
120
100
80
60
40
20
0
Ambient temperature (°C)
A
Load rate (%)
−10 0 10 20 30 40 50 60 70 80
120
100
80
60
40
20
0
Mounting method A
Mounting methods B to D
Mounting method E
Ambient temperature (°C)
A
Load rate (%)
−10 0 10 20 30 40 50 60 70 80
120
100
80
60
40
20
0
Mounting method A
Mounting methods B to D
Mounting method E
Ambient temperature (°C)
A
Load rate (%)
−10 0 10 20 30 40 50 60 70 80
120
100
80
60
40
20
0
Mounting method A
Mounting methods B to D
Mounting method E
Ambient temperature (°C)
A
Load rate (%)
−10 0 10 20 30 40 50 60 70 80
120
100
80
60
40
20
0
Mounting method A
Mounting methods B and C
Mounting method D
Mounting method E
Ambient temperature (°C)
A
Load rate (%)
−10 0 10 20 30 40 50 60 70 80
120
100
80
60
40
20
0
Mounting method A
Mounting method B
Mounting method C
Mounting method D
Mounting method E
Ambient temperature (°C)
A
Load rate (%)
−10 0 10 20 30 40 50 60 70 80
120
100
80
60
40
20
0
Mounting method A
Mounting method B
Mounting methods C and E
Mounting method D
Ambient temperature (°C)
A
Load rate (%)
−10 0 10 20 30 40 50 60 70 80
120
100
80
60
40
20
0
Mounting method A
Mounting method B
Mounting methods C and D
Mounting method E
Ambient temperature (°C)
A
Load rate (%)

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9
Open-frame Models and Models with Chassis: 150 W and 5 V Models with Chassis and Cover: 150 W and 5 V
Open-frame Models and Models with Chassis: 150 W and 12 V or 24 V Models with Chassis and Cover: 150 W and 12 V or 24 V
Note: 1. Use a metal plate* for the mounting surface.
2. Refer to Ambient Operating and Storage Environments on page 15.
Input Voltage Derating Curve
For 50-W, 75-W, 100-W, and 150-W models, check the derating characteristics for the input voltage before using the Power Supply.
−10 0 10 20 30 40 50 60 70 80
120
100
80
60
40
20
0
Mounting method A
Mounting methods B and C
Mounting methods D and E
Ambient temperature (°C)
A
Load rate (%)
−10 0 10 20 30 40 50 60 70 80
120
100
80
60
40
20
0
Mounting method A
Mounting methods B and C
Mounting methods D and E
Ambient temperature (°C)
A
Load rate (%)
−10 0 10 20 30 40 50 60 70 80
120
100
80
60
40
20
0
Mounting method A
Mounting methods B to E
Ambient temperature (°C)
A
Load rate (%)
−10 0 10 20 30 40 50 60 70 80
120
100
80
60
40
20
0
Mounting method A
Mounting methods B to E
Ambient temperature (°C)
A
Load rate (%)
Mounting Method A
(Standard Mounting Method)
Mounting Method B Mounting Method C Mounting Method D Mounting Method E Mounting Method F
CN1
CN1
CN1
FIN
CN1
FIN
CN1
*
CN1
*
*
*
*
*
100
90
8590
Input voltage (VAC)
Load rate (%)

S8EA
10
Overload Protection
The overload protection circuit will automatically reduce the output
voltage for short circuits and overcurrents to protect the Power Supply
from short-circuit currents and overcurrents.
When the output current falls within the rated range, the overload
protection function is automatically cleared.
Reference Graphs
Note: Refer to Overload Protection on page 17
Overvoltage Protection
Consider the possibility of an overvoltage and design the system so
that the load will not be subjected to an excessive voltage even if the
feedback circuit in the Power Supply fails.
When an excessive voltage that is approximately 130% of the rated
voltage or higher is output, the output voltage is shut OFF, preventing
damage to the load due to overvoltage.
To reset the protection, turn OFF the input power for three minutes or
longer and then turn it back ON.
Reference Graph
Note: Do not turn ON the power again until the cause of the
overvoltage has been removed.
Inrush Current, Startup Time, and Output Hold
Time
Note: A maximum startup time of 1,000 ms is required. Construct a
system configuration that considers the startup time of other
devices.
Model with
Power Boost Function
Intermittent
operation
0Maximum boost current
Output voltage (V)
0
Model without
Power Boost Function
Intermittent
operation
Rated current
Output voltage (V)
Overvoltage
protection
Operating
Variable range
Rated
output voltage
0V
Output voltage (V)
Startup time Hold time
AC input
voltage
AC input
current
Output voltage
Inrush current on input application
90%96.5%
Input ONInput OFF

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11
Dimensions (Unit: mm)
Power Supplies
Open-frame Models
132±1
50±1
122±0.5
5
5
40±0.5
VR51
Four, 3.5-dia. mounting holes
CN1CN51
3.5 max. (height with components mounted)
23±1
Output (+)
Output (−)
V. ADJ
Input (N)
Input (L)
S8EA-@N050@(50 W)
150±1
5
5
140
±0.5
40
±0.5
50±1
VR51
Four, 3.5-dia. mounting holes
CN1
CN51
3.5 max. (height with components mounted)
30
±1
Input (N)
Input (L) Output (+)
Output (−)
V. ADJ
S8EA-@N075@(75 W)

S8EA
12
155±1
62±1
5
5
145±0.5
52±0.5
VR51
CN51
CN1
Four, 3.5-dia.
mounting holes
30±1
3.5 max. (height with components mounted)
Output (+)
Output (−)
V. ADJ
Input (N)
Input (L)
S8EA-@N100@(100 W)
160±1
65±0.5
75±1
5
5
150±0.5
CN51
VR51
CN52
CN1
33.5±1
3.5 max. (height with components mounted)
Four, 3.5-dia.
mounting holes
Output (+)
Output (−)
V. ADJ
Input (N)
Input (L)
S8EA-@N150@(150 W)

S8EA
13
Models with Chassis and Models with Chassis and Cover
Two,
3.5 dia. holes
3.5
30
20±0.5
20
10
40±0.5
150±0.5
60±1
6
VR51
Four, M3
mounting holes
CN51
CN1
15
3.5
10 36±1
6
150±0.5
162±1
Two, M 3
mounting holes
3.5 dia. hole
Input (N)
Input (L)
Output (+)
V. ADJ
Output (−)
S8EA-@N050@L@(50 W)
4.5
30
60±120±0.5
20
10
Two, 4.5 dia.
holes 169±0.5
5.5
40±0.5
VR51
CN1
CN51
Four, M4
mounting holes
5.5
169±0.5
180±1
15
4.5
15
45±1
Two, M 4
mounting holes
4.5 dia. hole
Input (N)
Input (L) Output (+)
V. ADJ
Output (−)
S8EA-@N075@L@(75 W)

S8EA
14
6
173±0.5
13
45±0.5
25±0.5
23
Two, 4.5 dia.
holes
4.5
36
72±1
VR51
Four, M4
mounting holes
CN1
CN51
173±0.5
185±1
6
4.5 45±1
15
20
Two, M4
mounting holes
4.5 dia. hole
Input (N)
Input (L)
Output (+)
V. ADJ
Output (−)
S8EA-@N100@L@(100 W)
Two, 4.5 dia. holes
4.5 dia. hole
15
25
35±0.5
55±0.5
6
176±0.5
42
4.5
85±1
CN51
VR51
CN1
Four, M4
mounting holes
CN52
176±0.5 6
188±1
4.5 15
20
47±1
Two, M4 mounting
holes
Input (N)
Input (L)
Output (−)
V. ADJ
Output (+)
S8EA-@N150@L@(150 W)

S8EA
15
Safety Precautions
Refer to Safety Precautions for All Power Supplies.
Warning Indications
Meaning of Product Safety Symbols
Minor electric shock, fire, or Product failure may
occasionally occur. Do not disassemble, modify, or
repair the Product or touch the interior of the
Product.
Minor burns may occasionally occur. Do not touch
the Product while power is being supplied or
immediately after power is turned OFF.
Minor injury due to electric shock may occasionally
occur. Do not touch the terminals
while power is being supplied.
Working voltage can be 370V max. inside. This
voltage can be also available 30s after the switch off.
Do not allow contact with a conductor after power-on, withstand
voltage testing, or insulation resistance testing. Residual
voltage may cause failure, deterioration, or electrical shock.
Minor electric shock, fire, or Product failure may
occasionally occur. Do not allow any pieces of metal or
conductors or any clippings or cuttings resulting from
installation work to enter the Product.
Wiring
• Connect the ground completely. A protective earthing terminal
stipulated in safety standards is used. Electric shock or malfunction
may occur if the ground is not connected completely.
• The light ignition may possibly be caused. Ensure that input and
output terminals are wired correctly.
• Be sure to remove the sheet covering the product for machining
before power-ON so that it does not interfere with heat dissipation.
• Always select wire sizes suitable for at least 1.6 times the rated
current to prevent heating and ignition of wire materials due to load
abnormalities. Refer to the wiring manufacturer’s recommended
allowable current and voltage drop specifications for information
when selecting wiring materials.
• The current rating for the output terminal is 5A per terminal.
Make sure to use multiple terminals together if a current
exceeding the terminal rating is used.
• Use wiring materials with a UL recognized temperature of 60°C
min. or 60°C/75°C min.
• Use wiring materials with copper conductors.
• Refer to Input and Output Connectors on page 6 for the model
numbers of the Input and Output Connectors.
Do not insert and remove any connector more than 20 times.
Installation Environment
• Avoid places subject to shock or vibration.
A device such as a contact breaker may be a vibration source. Set
the Power Supply as far as possible from possible sources of
shock or vibration.
• If the Power Supply is used in an area with excessive electronic
noise, be sure to separate the Power Supply as far as possible
from the noise and surge sources.
Ambient Operating and Storage Environments
• Store the product with ambient temperature −25 to 75°C, and
relative humidity 25 to 90%.
• The internal parts may occasionally be deteriorated or broken. Do
not use the product outside the derating range.
• Use the product where the relative humidity is 25 to 85%.
• Avoid places where the product is subjected to direct sunlight.
• Avoid places where the product is subjected to penetration of
liquid, foreign substance, or corrosive gas
CAUTION Indicates a potentially hazardous situation
which, if not avoided, may result in minor or
moderate injury or in property damage.
Precautions for
Safe Use
Supplementary comments on what to do or
avoid doing, to use the product safely.
Precautions for
Correct Use
Supplementary comments on what to do or
avoid doing, to prevent failure to operate,
malfunction or undesirable effect on product
performance.
Used to warn of the risk of electric shock under
specific conditions.
Use to indicate prohibition when there is a risk of
minor injury from electrical shock or other source if
the product is disassembled.
Used for general CAUTION, WARNING, or
DANGER precautions for which there is no specified
symbol. (This symbol is also used as the alerting
symbol, but shall not be used in this meaning on the
product.)
Used to warn of the risk of minor injury caused by
high temperatures.
CAUTION
Precautions for Safe Use

S8EA
16
Mounting
• Install the Power Supply so that heat is effectively dissipated to
improve and maintain the reliability of the Power Supply over a
long period of time.
• The S8EA uses natural convection. Mount so that convection of
the air around the power unit can take place.
• The crosshatching indicates the allowable range for the mounted
metal part.
• When mounting, use the mounting holes in the board and spacers
to mount at least 8 mm off the board. This a clearance of 4 mm
space is necessary to satisfy the insulation and withstand voltage
standards.
• Metal plate is strongly recommended as the mounting panel.
Note: 1. Do not subject the board to stress such as twisting, bending,
or shock. This may cause failure or deterioration.
2. During assembly, do not subject the lead feet or surface
mounted parts to stress. This may cause failure or
deterioration.
• Depending on how the Power Supply is mounted, the heat
dissipating capacity may be reduced and cause deterioration to or
damage the internal components.
• The internal parts may occasionally deteriorate and be broken due
to adverse heat radiation. Do not loosen the screws on the Power
Supply.
Output Voltage Adjuster (V. ADJ)
Default Setting: Set at the rated voltage.
Adjustment Range: The output voltage can be adjusted to ±10% of
the rated voltage with the voltage output adjuster
(V. ADJ) on the front panel.
Turning clockwise increases the output voltage,
and turning counterclockwise decreases the
output voltage.
• The output voltage adjuster (V. ADJ) may possibly be damaged if
it is turned with unnecessary force. Do not turn the adjuster with
excessive force.
• After completing output voltage adjustment, be sure that the output
capacity or output current does not exceed the rated output
capacity or rated output current.
• Adjusting the output voltage adjuster (V. ADJ) may cause the
output voltage to exceed the voltage range. When adjusting the
output voltage, check the output voltage of the Power Supply and
be sure that the load is not destroyed.
Series Operation
Two Power Supplies can be connected in series. The ± voltage output
can be accomplished with two Power Supplies.
Note: 1. If the load is short-circuited, a reverse voltage will be
generated inside the Power Supply. If this occurs, the
Power Supply may possibly deteriorate or be damaged.
Always connect diodes as shown in the figure. Select
diodes with the following ratings.
2. Although Products having different specifications can be
connected in series, the current flowing through the load
must not exceed the smaller rated output current.
Parallel Operation
The Product is not designed for parallel operation.
However, the following backup operation is possible. (External diodes
are required.)
Use the same model for Power Supplies A and B.
• Set the output voltages of Power Supplies A and B higher to
compensate for the decrease of the forward voltages (VF) of diodes
D1 and D2.
Also, there will be a power loss equivalent to the output current
(IOUT) of the Power Supply multiplied by the forward voltage (VF) of
the diode. Therefore, cooling will be required to keep the
temperature of the diodes lower than the catalog value.
• There will be a power loss caused by load power and diodes. Be
sure not to exceed the rated power (rated output voltage times
rated output current) of each Power Supply.
Precautions for Correct Use
MountingInterval
CN1 4 mm min.
8mm min.
4 mm min.
4 mm min.
CN1
4 mm min.
4 mm min.
Locations of MountingHoles on Open-frame Models
8mm
8mm 8mm
8mm
8mm 8mm
8mm 8mm
CN1
Type Schottky Barrier diode
Dielectric strength
(VRRM)Twice the rated output voltage or above
Forward current (IF) Twice the rated output current or above
• Type: Schottky barrier diode
• Dielectric strength (VRRM): Rated output voltage of the Power
Supply or higher
• Forward current (IF): Twice the rated output current of the Power
Supply or higher
+V
−V
AC(L)
AC(N)
AC(L)
AC(N)
+V
−V
+V
−V
AC(L)
AC(N)
AC(L)
AC(N)
+V
−V
Series Operation
Correct
Output Voltage (±)
Correct
+V
−V
AC(L)
AC(N)
AC(L)
AC(N)
+V
−V
Parallel Operation
Incorrect
+V
A
B
D
1
D
2
−V
+V
−V
Load

S8EA
17
Overload Protection
• Internal parts may possibly deteriorate or be damaged if a
shortcircuited, overload or boost load state continues during
operation.
• Internal parts may possibly deteriorate or be damaged if the Power
Supply is used for applications with frequent inrush current or
overloading at the load end. Do not use the Power Supply for such
applications.
Charging Batteries
When connecting a battery at the load, connect an overcurrent-
limiting circuit and overvoltage protection circuit.
In Case There Is No Output Voltage
A possible cause for no output voltage may be that the overcurrent or
overvoltage protection has operated. The internal protection may
operate if a large amount of surge voltage, such as a lightening surge,
is applied to the input.
In case there is no output voltage, please check the following points
before contacting us:
• Checking the Overcurrent Protected Status
Check whether the load is in overcurrent status or is short-
circuited. Remove wires to load when checking.
• Checking overvoltage or internal protection:
Turn the power supply OFF once, and leave it OFF for at least
3 minutes for S8EA series. Then turn it ON again to see if this
clears the condition.
Power Boost Function
• Do not allow the boost current to continue for more than 10
seconds. Also, do not let the duty cycle exceed the following
conditions. This may damage the Power Supply.
• Lessen the load of the boosted load current by adjusting the
ambient temperature and the mounting direction.
• Ensure that the average current of one cycle of the boost current
does not exceed the specified value. This may damage the Power
Supply.
Note: Make sure that the boost current meets the above conditions.
Consult with your OMRON representative if any other
conditions are required.
Ripple Noise Voltage
The specified standard for the ripple voltage noise was measured with
a measurement circuit that is based on JEITA standard RC-9131B.
Models Boost current conditions
S8EA-BN05024@(50 W)
S8EA-BN07524@(75 W)
S8EA-BN10024@(100 W)
S8EA-BN15024@(150 W)
[A]
lave: Average current
t1 t2
lp: Boost current
Output current
• lave ≤Rated current
• lp ≤Rated boost current
• 90 to 132 VAC
• t1 ≤10 s
•
Duty
t1
t1+t2
=
×100[%] ≤35%
S8EA
Oscilloscope
frequency band:
100 MHz
C1 C2 Load
C1: 100 μF
C2: 0.1 μF
150 mm
Coaxial cable
+V
−V

S8EA
18
Read and Understand This Catalog
Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you have any questions or
comments.
Warranty and Limitations of Liability
WARRANTY
OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a period of one year (or other period if specified)
from date of sale by OMRON.
OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NON-INFRINGEMENT, MERCHANTABILITY, OR
FITNESS FOR PARTICULAR PURPOSE OF THE PRODUCTS. ANY BUYER OR USER ACKNOWLEDGES THAT THE BUYER OR USER ALONE HAS
DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE. OMRON DISCLAIMS ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED.
LIMITATIONS OF LIABILITY
OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR COMMERCIAL
LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED ON CONTRACT, WARRANTY, NEGLIGENCE, OR
STRICT LIABILITY.
In no event shall the responsibility of OMRON for any act exceed the individual price of the product on which liability is asserted.
IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS REGARDING THE PRODUCTS UNLESS
OMRON'S ANALYSIS CONFIRMS THAT THE PRODUCTS WERE PROPERLY HANDLED, STORED, INSTALLED, AND MAINTAINED AND NOT
SUBJECT TO CONTAMINATION, ABUSE, MISUSE, OR INAPPROPRIATE MODIFICATION OR REPAIR.
Application Considerations
SUITABILITY FOR USE
OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the combination of products in the customer's
application or use of the products.
At the customer's request, OMRON will provide applicable third party certification documents identifying ratings and limitations of use that apply to the
products. This information by itself is not sufficient for a complete determination of the suitability of the products in combination with the end product,
machine, system, or other application or use.
The following are some examples of applications for which particular attention must be given. This is not intended to be an exhaustive list of all possible
uses of the products, nor is it intended to imply that the uses listed may be suitable for the products:
• Outdoor use, uses involving potential chemical contamination or electrical interference, or conditions or uses not described in this catalog.
• Nuclear energy control systems, combustion systems, railroad systems, aviation systems, medical equipment, amusement machines,
vehicles, safety equipment, and installations subject to separate industry or government regulations.
• Systems, machines, and equipment that could present a risk to life or property.
Please know and observe all prohibitions of use applicable to the products.
NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY WITHOUT ENSURING THAT THE
SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON PRODUCTS ARE PROPERLY RATED AND
INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM.
PROGRAMMABLE PRODUCTS
OMRON shall not be responsible for the user's programming of a programmable product, or any consequence thereof.
Disclaimers
CHANGE IN SPECIFICATIONS
Product specifications and accessories may be changed at any time based on improvements and other reasons.
It is our practice to change model numbers when published ratings or features are changed, or when significant construction changes are made.
However, some specifications of the products may be changed without any notice. When in doubt, special model numbers may be assigned to fix or
establish key specifications for your application on your request. Please consult with your OMRON representative at any time to confirm actual
specifications of purchased products.
DIMENSIONS AND WEIGHTS
Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when tolerances are shown.
PERFORMANCE DATA
Performance data given in this catalog is provided as a guide for the user in determining suitability and does not constitute a warranty. It may represent
the result of OMRON's test conditions, and the users must correlate it to actual application requirements. Actual performance is subject to the OMRON
Warranty and Limitations of Liability.
ERRORS AND OMISSIONS
The information in this document has been carefully checked and is believed to be accurate; however, no responsibility is assumed for clerical,
typographical, or proofreading errors, or omissions.

Authorized Distributor:
In the interest of product improvement,
specifications are subject to change without notice.
Cat. No. T052-E1-01
Printed in Japan
0313 (0313)
© OMRON Corporation 2013 All Rights Reserved.
OMRON Corporation Industrial Automation Company
OMRON ELECTRONICS LLC
One Commerce Drive Schaumburg,
IL 60173-5302 U.S.A.
Tel: [phone]/Fax: [phone]
Regional Headquarters
OMRON EUROPE B.V.
Wegalaan 67-69-2132 JD Hoofddorp
The Netherlands
Tel: [phone]/Fax: [phone]
Contact: www.ia.omron.com
Tokyo, JAPAN
OMRON ASIA PACIFIC PTE. LTD.
No. 438A Alexandra Road # 05-05/08 (Lobby 2),
Alexandra Technopark,
Singapore 119967
Tel: [phone]/Fax: [phone]
OMRON (CHINA) CO., LTD.
Room 2211, Bank of China Tower,
200 Yin Cheng Zhong Road,
PuDong New Area, Shanghai, 200120, China
Tel: [phone]/Fax: [phone]
CSM_3_2_0416