TDK-Lambda ZWS10C User manual

INSTRUCTION MANUAL
ZWS10C - 50C Series
TDK-Lambda
<Page>
BEFORE USING THE POWER SUPPLY UNIT (Common)
Be sure to read this instruction manual thoroughly before using this product. Pay attention to all cautions and warnings before
using this product. Incorrect usage could lead to an electrical shock, damage to the unit or a fire hazard.
DANGER
•Never use this product in locations where flammable gas or ignitable substances are present.
INSTALLATION WARNING
•When installing, ensure that work is done in accordance with the instruction manual.
When installation is improper, there is risk of electric shock and fire.
•Installation shall be done by Service personnel with necessary and appropriate technical training and experience.
There is a risk of electric shock and fire.
•Do not cover the product with cloth or paper etc.
Do not place anything flammable around.
This might cause damage, electric shock or fire.
WARNING on USE
•Do not touch this product or its internal components while circuit in operation, or shortly after shutdown.
You may receive a burn.
•While this product is operating, keep your hands and face away from it as you may be injured by an unexpected situation.
•For product without cover, do not touch this product or its internal components while product is in operation, or shortly
after shutdown. There are high voltage potential and high temperature parts in the product.
This might cause injury such as electric shock or burn.
•There are cases where high voltage charge remains inside the product. Therefore, do not touch even if they are not in
operation as you might get injured due to high voltage and high temperature.
You might also get electric shock or burn.
•Do not make unauthorized changes to this product nor remove the cover as you might get an electric shock or might
damage the product. We will not be held responsible after the product has been modified, changed or dis-assembled.
•Do not use this product under unusual condition such as emission of smoke or abnormal smell and sound etc.
Please stop using it immediately and shut off the product.
It might lead to fire and electric shock. In such cases, please contact us.
Do not attempt repair by yourself, as it is dangerous for the user.
•Do not operate and store these products in environments where condensation occurs due to moisture and humidity.
It might lead fire and electric shock.
•Do not drop or apply shock to this product. It might cause failure.
Do not operate these products mechanical stress is applied.
•When necessary, this products is to be repaired only by us or our authorized agents.
It is important that this product cannot be used in hazardous environments (facilities such as nuclear power control system
or life support equipment) without our written consent.
CAUTION on MOUNTING
•Confirm connections to input/output terminals are correct as indicated in the instruction manual before switching on.
•Input voltage, Output current, Output power, ambient temperature and ambient humidity should be kept within
specifications, otherwise the product will be damaged.
•Input/output line, please use the wires as short and thick as possible.
•Do not use this product in special environment with strong electromagnetic field, corrosive gas or conductive substances
and direct sunlight, or places where product is exposed to water or rain.
•Mount this product properly in accordance with the instruction manual, mounting direction and shall be properly be
ventilated.
•Please shut down the input when connecting input and output of the product.
•When installing in environment where conductive foreign, dust and liquid may be present, please consider penetration of
above foreign material in the power supply by installing filter, to prevent trouble or malfunction.
1/20
ZWS10C - 50C Series
Instruction Manual
FA011-04-01A

INSTRUCTION MANUAL
ZWS10C - 50C Series
TDK-Lambda
<Page>
CAUTION on USE
•Product individual notes are shown in the instruction manual.
If there is any difference with common notes individual notes shall have priority.
•Before using this product, be sure to read the catalog and instruction manual.
There is risk of electric shock or damage to the product or fire due to improper use.
•Input voltage, Output current, Output power, ambient temperature and ambient humidity should be kept within
specifications, otherwise the product will be damaged, or cause electric shock or fire.
•If the built-in fuse is blown, do not use the product even after replacing the fuse, as there is risk of abnormality inside.
Be sure to request repair to our company.
•For products without built-in protection circuit (element, fuse, etc.), insert fuse at the input to prevent smoke, fire during
abnormal operation. As for products with built-in protection circuit, depending on usage conditions, built-in protection
circuit might not work. It is recommended to provide separate proper protection circuit.
•For externally mounted fuse do not use other fuses aside from our specified and recommended fuse.
•This product was made for general purpose electronic equipment use and is not designed for applications requiring high
safety (such as extremely high reliability and safety requirements.
Even though high reliability and safety are not required, this product should not be used directly for applications that have
serious risk for life and physical safety.
Take sufficient consideration in fail-safe design (such as providing protective circuit or protective device inside the system,
providing redundant circuit to ensure no instability when single device failure occurs).
•When used in environments with strong electromagnetic field, there is possibility of product damage due to malfunction.
•When used in environment with corrosive gas (hydrogen sulfide, sulfur dioxide, etc.) , there is possibility that they might
penetrate the product and lead to failure.
•When used in environments where there is conductive foreign matter or dust, there is possibility of product failure or
malfunction.
•Provide countermeasure for prevention of lightning surge voltage as there is risk of damage due to abnormal voltage.
•Connect together the frame ground terminal of the product and the ground terminal of the equipment for safety and noise
reduction. If these ground is not connected together, there is risk of electric shock.
•Parts with lifetime specifications (built-in fan, electrolytic capacitor) are required to be replaced periodically.
Set the overhaul period depending on the environment of usage and perform maintenance.
Also, note that there are cases when EOL products cannot be overhauled.
•Take care not to apply external abnormal voltage to the output. Especially, applying reverse voltage or overvoltage more
than the rated voltage to the output might cause failure, electric shock or fire.
• This product is designed under condition Material group Ⅲb, Pollution Degree (PD): PD2, Over Voltage category (OVC):
OVCII and Class of equipment: Class Ⅰ and Class II.
This product is designed to be accessible only to service technicians as part of indoor use device.
•This product contains a printed circuit board utilizing surface mounted devices.
PCB stress such as bending, twisting etc. could cause damage. Therefore, please handle with care.
•When handling this product, hold the board edge and take care not to touch the component side.
When installing this product in apparatus or equipment, mount it on spacers.
•The outputs of this product may, under fault conditions, exceed ES1 voltage limits.
Therefore the outputs must be protected in the end equipment to maintain ES1.
•This product has used Power Thermistor to protect the circuit from Inrush Current.
Frequent repetition of input might cause damage to internal components because of generating surge current.
2/20

INSTRUCTION MANUAL
ZWS10C - 50C Series
TDK-Lambda
<Page>
Note
•Take note that traces of sheet metal processing be left in our power supplies.
•When disposing product, follow disposal laws of each municipality.
•Published EMI (CE, RE) or immunity is the result when measured in our standard measurement conditions and
might not satisfy specification when mounted and wired inside end-user equipment.
Use the product after sufficiently evaluating at actual end-user equipment.
•When exporting our products, apply for necessary permissions as required by rules and regulations of Foreign Exchange
and Foreign Trade Control Act.
•Catalogue, contents of the instruction manual may be changed without a prior notice. Refer to latest catalogue or
instruction manual.
•Reproduction or reprinting the instruction manual or its portion is forbidden without our permission.
LONG-TERM STORAGEMETHODANDLONG-TERMSTORAGEPERIOD
•Please keep the product in carton box.
•Please do not apply excessive vibration, shock or mechanical stress applied directly to the product.
•Please keep away from direct sunlight.
• For long-term storage temperature and humidity, the following conditions shall be used as a guideline :
Temperature range : 5℃～30℃
Humidity range : 40%～60%RH
Please keep away from the places where temperature and humidity can change drastically.
It can cause condensation on the product or deterioration.
•For long-term storage period, we recommend to use within 2 years after receiving the product.
< Soldering and PCB mounted products : On Board, Power Module and etc >
For products that have been received for more than 1 year, please check lead oxidation and solderability.
In addition, SMD type products may have MSL (Moisture Sensitivity Level) provision.
Please be sure to read the instruction manual and delivery specifications.
< Unit type or PCB type of products : the product is used an aluminium electrolytic capacitor >
There is tendency that the leakage current of an aluminium electrolytic capacitor may increase when stored without using
for a long time. This phenomenon can be improved by applying voltage to the aluminum electrolytic capacitor to reduce
the increased leakage current through the self-recovery effect of the electrolyte.
For reference, before using products that have been stored for a very long time, please warm-up first for 30 minutes or
more without taking load.
< Criterion of warm up voltage condition >
(1)Implementation period : 1 year or above after the delivery
(2)Electrical continuity condition
Input voltage : Rating
Load : 0A
Ambient temperature : Normal temperature
Time : 30 minutes or more
3/20

INSTRUCTION MANUAL
ZWS10C - 50C Series
TDK-Lambda
<Page>
1. Model name identification method
ZWS 10C - 5 /□
Option (*1)
Rated Output Voltage
Series Name
Output Power type
Series Name
2. Terminal Explanation
L : Input terminal Live line (Fuse in line) (CN1)
N : Input terminal Neutral line (CN1)
: Earth ( ) Terminal (CN2)
Mounting hole (hole diameter : φ3.5mm)
This hole is electrically connected to terminal of CN2.
The mounting surface of the spacer should be within Maxφ6.2mm.
Mounting hole (hole diameter : φ3.5mm)
These holes are used for support the unit.
+ : + Output Terminal (CN51)
–: –Output Terminal (CN51)
4/20
(*1) Blank : Standardtype.
/L : Withchassismodel.
/A : Withchassisandcovermodel.
/CO2 : Withcoatingonbothsidesof
PCBmodel.
1
2
3
7
6
5
4
+
-
+
-
ZWS10C/ZWS15C
CN1
3
1
L
N
INPUT
CN2
CN51
OUTPUT 1
2
COMPONENT SIDE
CN1
3
1
L
N
INPUT
CN2
CN51
OUTPUT 1
2
COMPONENT SIDE
1
2
3
4
5
7
6
5
1
2
3
4
5
7
6
5
-
+
-
+
CN1
3
1
L
N
INPUT
CN2
CN51
OUTPUT
1
2
COMPONENT SIDE
3
4
1
2
3
4
55
7
6
5
ZWS30C
ZWS50C

INSTRUCTION MANUAL
ZWS10C - 50C Series
TDK-Lambda
<Page>
3. Block Diagram
ZWS10C, ZWS15C
ZWS30C
ZWS50C
•Circuit topology, switching frequency
Flyback topology 100kHz
•Fuse rating
ZWS10C : 1.0A
ZWS15C : 1.0A
ZWS30C : 2.5A
ZWS50C : 2.5A
5/20
Line Filter
Rectifier
Filter
L
N
Rectifier & Filter
Input
85～265VAC
+V
Output
-V
Control Circuit
Output
Sensing
Photo-
coupler
Switching
Circuit
OVP
Circuit
OCP
Circuit
Inrush Current
Limit Circuit
Line Filter
Rectifier
Filter
L
N
Rectifier & Filter
Input
85～265VAC
+V
Output
-V
Control Circuit
Output
Sensing
Photo-
coupler
Switching
Circuit
OCP
Circuit
Inrush Current
Limit Circuit
OVP
Circuit
Line Filter
Rectifier
Filter
L
N
Rectifier & Filter
Input
85～265VAC
+V
Output
-V
Control Circuit
Output
Sensing
Photo-
coupler
Switching
Circuit
OCP
Circuit
Inrush Current
Limit Circuit
OVP
Sensing
Photo-
coupler

INSTRUCTION MANUAL
ZWS10C - 50C Series
TDK-Lambda
<Page>
4. Sequence time chart
ZWS10C, ZWS15C
(*1) OVP point
5V-15V : >115%.
24V : >112%.
ZWS30C, ZWS50C
(*1) OVP point
ZWS30C, ZWS50C : >115%.
0V
Vout
0V
Input on
Input off
Input on
Input off
OVP point (*1)
Input Voltage
Output Voltage
OVP act on
OCP act on
OCP reset
0V
Vout
0V
Input on
Input off
Input on
Input off
OVP point (*1)
Input Voltage
Output Voltage
OVP act on
OCP act on
OCP reset
6/20`

INSTRUCTION MANUAL
ZWS10C - 50C Series
TDK-Lambda
<Page>
5. Terminal connecting method
Pay attention to the input wiring. If it is connected to wrong terminal, the power supply will be damaged.
•Input must be off when making connections.
•Connect terminal and mounting hole to protective earth (frame ground of the equipment etc.) of the equipment in
Class I insulation.
When connecting the terminal to a protective earth, use a thick wire for safety and improvement of noise sensitivity.
•The output load line and input line shall be separated to improve noise sensitivity.
•Do not apply stress to PCB, when connecting or removing connector.
•Use input/output connector (housing) specified by the table below.
•Use recommended crimping tool. Connector is not included with this product. (Refer to the following)
7/20
Connector / Housing and terminal Pin
Terminal Symbol Connector Housing Terminal Pin Maker
Matching housing and terminal --- Not included with the product
Hand Crimping Tool
Hand Crimping Tool Terminal Pin Maker
SVH-21T-P1.1 or BVH-21T-P1.1
SVH-41T-P1.1 or BVH-41T-P1.1
CN51
(ZWS50C)
B4P-VH(LF)(SN)
VHR-4N
(AWG#20 ~ AWG#16)
Output connector
FG TAB
CN2
-
STO-21T-250N
(AWG#22 ~ AWG#18)
STO-61T-250N
(AWG#18 ~ AWG#14)
-
YC-160R
SVH-21T-P1.1
or BVH-21T-P1.1
J.S.T.
YC-930R
YC-931R
SVH-41T-P1.1
or BVH-41T-P1.1
Input connector
CN1
B2P3-VH(LF)(SN)
VHR-3N
(AWG#22 ~ AWG#16)
J.S.T.
CN51
(ZWS10C - 30C)
B2P-VH(LF)(SN)
VHR-2N
(AWG#20 ~ AWG#16)
+
-
+
-
ZWS10C/ZWS15C
CN1
3
1
L
N
INPUT
CN2
CN51
OUTPUT 1
2LOAD
COMPONENT SIDE
ZWS30C
CN1
3
1
L
N
INPUT
CN2
CN51
OUTPUT 1
2LOAD
COMPONENT SIDE
-
+
-
+
ZWS50C
CN1
3
1
L
N
INPUT
CN2
CN51
OUTPUT
1
2LOAD
COMPONENT SIDE
3
4

INSTRUCTION MANUAL
ZWS10C - 50C Series
TDK-Lambda
<Page>
6. Explanation of Functions and Precautions
6-1. Input Voltage Range
Input voltage range is single phase 85-265VAC (47-63Hz).
Input voltage, which is out of specification, might lead unit damage.
For cases where conformance to various safeties required, described as 100-240VAC (50-60Hz).
6-2. Inrush Current
This series equipped power thermistor to limit the inrush current. Higher inrush current will flow at higher ambient
temperature or re-input condition. Please select input switch and fuse carefully with the high temperature and re-input the
power condition. The Inrush Current value is under cold start at 25oC in the specification.
6-3. Over Voltage Protection (OVP)
ZWS10C/ZWS15C : The over voltage protection (OVP) circuit with zener diode clamp system is built in. Over 115% of
nominal voltage will clamp the output. If the output voltage is lowered due to the over voltage application, the output will not
resume. Replacement of the power supply unit is necessary.
ZWS30C/ZWS50C : The OVP function is output shut down method and manual reset type. Over 115% of nominal voltage
will shut down the output. If the output voltage is lowered due to the over voltage application, the output will not resume. To
reset OVP, remove the input of power supply for a few minutes, and then re-input.
In addition, the setting value of OVP is fixed and not adjustable. Pay attention not to apply higher voltage externally to the
output terminal to avoid unit failure. In case of inductive load, put protective diode in series to the output power line. In heavy
load condition, OCP may triggered before output reach OVP threshold.
6-4. Over Current Protection (OCP)
Current limiting (Hiccup) with automatic recovery.
OCP function operates when the output current exceeds 105% of maximum DC output current of specification.
The outputs will be automatically recovered when the overload condition is removed. Never operate the unit under over
current or shorted conditions, which may lead unit damage. OCP setting is fixed and cannot be adjusted externally.
6-5. Output Ripple & Noise
The standard specification for maximum ripple value is measured according to below measurement circuit .
When load lines are longer, ripple will becomes larger. In this case, electrolytic capacitor, film capacitor, etc. might be
necessary to use across the load terminal. The output ripple cannot be measured accurately if the probe ground lead of
oscilloscope is too long.
8/20
Coaxial Cable
+Load
＋
－
150mm
Oscilloscope
Power
Supply
Bandwidth : 100MHz
1.5m 50Ω
C1 : 0.1uF Cap., Film.
C2 : 100uF Cap., Elect.
C3 : 4700pF Cap., Ceramic.
R1 : 50Ω
C1 C2
C3
1R

INSTRUCTION MANUAL
ZWS10C - 50C Series
TDK-Lambda
<Page>
6-6. Series Operation
For series operation, either method (A) or (B) is possible.
Method (A) Method (B)
Note : Ensure that all units must be in operation. (Never use in condition that one of the units is not operated.)
Please select a bypass diode with maximum forward current rating more than output load current.
And maximum reveres voltage must withstand each power supply output voltage.
6-7. Isolation Test
Isolation resistance between Output - terminal is more than 100MΩat 500VDC.
For safety operation, voltage setting of DC isolation tester must be done before the test.
Ensure that the unit is fully discharged after the test.
Output - terminal : 500VDC More than 100MΩ
9/20
+V
Power
Supply Load
-V
+V
-V
＋
－
＋
－
Power
Supply Load
+V
-V
+V
-V
＋
－
Bypass diodes
Power
Supply
Power
Supply
Load
+V
-V
AC (L)
Isolation Tester
AC (N)

INSTRUCTION MANUAL
ZWS10C - 50C Series
TDK-Lambda
<Page>
6-8. Withstand Voltage
This series is designed to withstand 3.0kVAC between input and output, 2.0kVAC between input and and 750VAC
between output and each for 1 minute. When testing withstand voltage, set current limit of the withstand voltage test
equipment to 10mA (output - : 20mA). The applied voltage must be gradually increased from zero to the testing value and
then gradually decreased for shut down. When timer is used, the power supply may be damaged by high impulse voltage at
timer switch on and off. Connect input and output as follows.
Input - Output (Dotted line) : 3.0kVAC 1min(10mA)
Input - terminal (Solid line) : 2.0kVAC 1min(10mA)
10/20
Withstand
Voltage Tester
+V
-V
AC (L)
Withstand
Voltage Tester
+V
-V
AC (L)
Output - terminal : 750VAC 1min(20mA)
Withstand
Voltage Tester
AC (N) AC (N)

INSTRUCTION MANUAL
ZWS10C - 50C Series
TDK-Lambda
<Page>
7. Mounting Method
7-1. Mounting Directions
Recommended standard mounting method is (A). Method (B)-(F) are also possible.
7-2. Output Derating
Use within the following output derating range based on the mounting direction and power supply ambient
temperature.
If the power supply is operated beyond the output derating, the IC's built-in over temperature shut down
function operates and output will be shut down.
After shut down, remove the input and cool down to reset over temperature shut down, and then re-input.
Load(%) of derating curve indicates output derating values below are based on the maximum output current
value at the rated output voltage value as 100%.
■CONVECTION COOLING
ZWS10C
ZWS15C
11/20
Mounting(A),(B),(C),(D),(E),(F)
-10 ~+55
60
70
Ta(°C)
Load (%)
Mounting(A),(B),(C),(D),(E),(F)
100
83
50
0
20
40
60
80
100
120
-10 0 10 20 30 40 50 60 70 80
Load (%)
Ta (℃)
Mounting(A),(B),(C),(D),(E),(F)
-10 ~+50
60
70
Ta(°C)
Load (%)
Mounting(A),(B),(C),(D),(E),(F)
100
75
50
0
20
40
60
80
100
120
-10 0 10 20 30 40 50 60 70 80
Load (%)
Ta (℃)
(MOUNTING A) (MOUNTING B)
CN1(INPUT)
CN1(INPUT) CN1(INPUT)
CN1(INPUT)
CN1(INPUT)
CN1(INPUT)
(MOUNTING C) (MOUNTING D) (MOUNTING E) (MOUNTING F)
(STANDARD MOUNTING)

INSTRUCTION MANUAL
ZWS10C - 50C Series
TDK-Lambda
<Page>
12/1712/17
ZWS30C
ZWS50C
5V/15V
12V
24V/48V
12/20
Mounting(A),(D),(E),(F)
Mounting(B),(C)
Mounting(A),(D),(E),(F) Mounting(B),(C)
-10 ~ [phone]
60 75 80
70 50 60
Ta (°C)
Load (%)
0
20
40
60
80
100
120
-10 0 10 20 30 40 50 60 70 80
Load (%)
Ta (℃)
Mounting(A),(B),(C),(D),(E),(F)
-10 ~ +50
60
70
Ta (°C)
Load (%)
Mounting(A),(B),(C),(D),(E),(F)
100
75
50
0
20
40
60
80
100
120
-10 0 10 20 30 40 50 60 70 80
Load (%)
Ta (℃)
Mounting(A),(B),(C),(D),(E)
Mounting(F)
Mounting(A),(B),(C),(D),(E) Mounting(F)
-10 ~ [phone]
50 100 87
60 75 75
70 50 45
Ta (°C)
Load (%)
0
20
40
60
80
100
120
-10 0 10 20 30 40 50 60 70 80
Load (%)
Ta (℃)
Mounting(A),(B),(C),(D),(E)
Mounting(F)
Mounting(A),(B),(C),(D),(E) Mounting(F)
-10 ~ [phone]
60 75 75
70 50 45
Ta (°C)
Load (%)
0
20
40
60
80
100
120
-10 0 10 20 30 40 50 60 70 80
Load (%)
Ta (℃)

INSTRUCTION MANUAL
ZWS10C - 50C Series
TDK-Lambda
<Page>
12/17
■FORCED AIR COOLING
ZWS10C・ZWS15C・ZWS30C
ZWS50C
In the case of using at forced air cooling, entire component must be cool down.
As a guide, an air velocity of more than 0.8m/s is required to flow through the component side of power supply.
The power supply is considered as a component installed to an equipment, the equipment must be re-evaluated and make
sure to meet allowable component temperature.
Electrolytic capacitor allowable Max temperature
13/20
Mounting(A),(B),(C),(D),(E),(F)
-10 ~ +70
Ta (°C)
Load (%)
Mounting(A),(B),(C),(D),(E),(F)
100
0
20
40
60
80
100
120
-10 0 10 20 30 40 50 60 70 80
Load (%)
Ta (℃)
Mounting(A),(D),(E),(F)
Mounting(B),(C)
Mounting(A),(D),(E),(F) Mounting(B),(C)
-10 ~ [phone]
70 100 75
Ta (°C)
Load (%)
0
20
40
60
80
100
120
-10 0 10 20 30 40 50 60 70 80
Load (%)
Ta (℃)
C3 C4 C6 C54
ZWS10C - - - 71℃
ZWS15C 77℃ - - -
ZWS30C - 73℃ - -
ZWS50C - 77℃ - -
Model
Allowable Maxtemperature

INSTRUCTION MANUAL
ZWS10C - 50C Series
TDK-Lambda
<Page>
7-3. Output Derating according to the Input Voltage
Load (%) is percent of maximum output current value in a rated output voltage.
In addition, the input derating curve must be considered, refer to section 7-2. Output Derating curve according to
the Mounting Direction.
ZWS50C
12V/15V/24V/48V
7-4. Mounting Method
7-4-1. Mounting method for standard model
Insert the spacer (Maxφ6.2mm) of height more than 8mm to lift the unit. And use all mounting holes for the unit
installation. The vibration spec is specified under this mounting condition.
Recommended torque for mounting screw: M3 screw, 0.59N·m (6.0 kgf ·cm).
■Mounting Holes size
14/20
Height more than 8.0mm
Height more than 8.0mm
ZWS10C, ZWS15C : 2 HOLES φ3.5mm ZWS30C : 4 HOLES φ3.5mm
ZWS50C : 4 HOLES φ3.5mm
Input Voltage(VAC) Load (%)
85 90
90 to 265 100
0
20
40
60
80
100
85 105 125 145 165 185 205 225 245 265
Load (%)
Input Voltage(VAC)
Height more than 8.0mm

INSTRUCTION MANUAL
ZWS10C - 50C Series
TDK-Lambda
<Page>
Allowable area by metal pieces is 6.2mm from each PCB corners. Refer to figure below.
■Condition to meet EMC, Isolation & Withstand Voltage and Cooling requirement.
(1) Keep 4mm space minimum from the surface and sides of power supply, 8mm space minimum from the bottom side
of PCB to meet safety requirement, or more space depend on safety requirement. If the space is not enough,
the specification of isolation and withstand voltage will not be satisfied.
(2) More space may be required in the surrounding of power supply and the upper area of components for effective
cooling depends on the application conditions.
15/20
ZWS10C/ZWS15C ZWS30C/ZWS50C
More than 8mm More than
4mm
More than
4mm
More than 4mm
More than
4mm
Component side
PCB
More than 4mm

INSTRUCTION MANUAL
ZWS10C - 50C Series
TDK-Lambda
<Page>
(3) For installation in Class I end equipment, terminal (Earth) must be connected to the Protective earth terminal of the
equipment.
If not connected, the conducted noise, radiation noise and output noise may increase.
(4) For Installation in Class II end equipment, terminal (Earth) is unnecessary to be connected to Protective earth
terminal of the equipment. The unit need to be fixed and it is insulated from any accessible conductive part by
reinforced insulation, so use a resin (insulating) spacer for fixing.
16/20
Protective Earth Terminal
ZWS10C/ZWS15C
Output
ZWS30C
Terminal
Wire Output
Terminal
Metal spacer(stud)
Protective Earth Terminal
Metal spacer(stud)
Input
Input Wire
A
Chassis(Conductor) A
Chassis(Conductor)
ZWS50C
Input
Wire
Output
Terminal
Metal spacer(stud)
Protective Earth Terminal
A
Chassis(Conductor)
ZWS10C/ZWS15C
Input Output
ZWS30C
Input Output
Insulator material spacer
Insulator material spacer
Sheet Metal Part
Sheet Metal Part
A
Chassis(Conductor) A
Chassis(Conductor)
ZWS50C
Input Output
Sheet Metal Part
Insulator material spacer
A
Chassis(Conductor)

INSTRUCTION MANUAL
ZWS10C - 50C Series
TDK-Lambda
<Page>
7-4-2. Mounting method for /A type, /L type
/A type is optional model with metal chassis and cover.
/L type is optional model with metal chassis.
The mounting holes on the bottom(A) or on the side(B) of the chassis are for power supply fixing.
The maximum allowable penetration for screw into chassis is 4mm. Consider the incomplete threads when installing.
Recommended torque for mounting screw : M3 screw, 0.59N·m (6.0 kgf ·cm).
Refer to the /A type and /L type outline drawings for the detailed dimensions.
■/A type
17/20
ZWS10C/ZWS15C
ZWS30C
3
1
CN1
2
1
CN51
CN2
CN1
CN51
3
1
CN2
2
1
(A)
(A)
(B)
(B)
(B)
(B)
(A)
(A)
Terminal
Terminal
ZWS50C
CN1
(A)
(B)
(A)
Terminal
CN51
3
1
CN2
2
4
3
1
(B)

INSTRUCTION MANUAL
ZWS10C - 50C Series
TDK-Lambda
<Page>
■/L type
■Mounting Holes size
A: 2-M3 tapped, embossed and countersink holes for mounting screws to fix the power supply from bottom.
B: 2-M3 tapped, embossed and countersink holes for mounting screws to fix the power supply from side.
18/20
CN1
3
1
CN1
3
1
CN2
CN51
Terminal
Terminal
CN2
1
2
COMPONENT SIDE
COMPONENT SIDE
CN51
1
2
ZWS10C/ZWS15C
ZWS30C
(A)
(A)
(B)
(B)
(B)
(B)
(A)
(A)
(B)
ZWS50C
CN1
CN51
3
1
CN2
2
1
(A)
(A)
4
3(B)
Terminal COMPONENT SIDE

INSTRUCTION MANUAL
ZWS10C - 50C Series
TDK-Lambda
<Page>
8. EMC and Wiring Method
This power supply is primarily designed and manufactured to be used and enclosed in other equipment.
The installation, wiring, grounding and end application of the switching power supply in the equipment system may influence
its EMC characteristics. Therefore, the EMC performance has to be tested on end system level. Additional filtering may be
required depends on application and installation methods.
Please refer to following application notes which may help to improve EMC performance.
(1) The output load line and input line shall be separated each other and twisted individually to improve noise.
(2) Use all lines as thick and short as possible to made lower impedance.
(3) Noise can be reduced by attaching a capacitor to the load terminals.
(4) For safety and EMI considerations, connect between terminal and Frame Ground terminal of equipment firmly.
(5) The recommended wire size :
Input : AWG#22 ~ AWG#16
Output : AWG#20 ~ AWG#16
9. External Fuse Rating
Refer to the following fuse rating when selecting the external input fuse.
Surge current flows when input turn on. Use slow-blow fuse or time-lag fuse. Fast-blow fuse can not be used.
Fuse rating is specified by inrush current value at input turn on.
Do not select the fuse according to actual input current (rms.) values.
ZWS10C : 1.0A
ZWS15C : 1.0A
ZWS30C : 2.5A
ZWS50C : 2.5A
10. Before concluding that the unit is at fault
(1) Check if the rated input voltage is connected.
(2) Check if the wiring of input and output is correct.
(3) Check if the wire size is not too thin.
(4) Check if the output current and output power dose not over specification.
(5) Audible noise can be heard when input voltage waveform is not sinusoidal wave.
(6) Audible noise can be heard during Dynamic-Load operation.
(7) Ensure that a large capacitor is not connected on the output side. Please use within maximum capacitance shown below.
11. The life expectancy
The life of the power supply depends on the life of the built-in aluminum electrolytic capacitor.
The life is described in reliability data.
The life of the aluminum electrolytic capacitor varies depending on the method of mounting the power supply, the load
current, and the ambient temperature.
Please refer to "Electrolytic Capacitor Lifetime".
Please do not use the product which passed over the life expectancy.
There is a risk of unexpected output shutdown and specifications may not be satisfied.
Please contact us for maintenance or exchange the product which passed over the life expectancy.
19/20
MODEL 5V 12V 15V 24V 48V
ZWS10C 10000uF 2000uF 1400uF 300uF -
ZWS15C 10000uF 2500uF 1000uF 500uF -
ZWS30C 10000uF 2700uF 1500uF 600uF -
ZWS50C 6000uF 5000uF 4000uF 2500uF 560uF
Maximumexternal capacitance

INSTRUCTION MANUAL
ZWS10C - 50C Series
TDK-Lambda
<Page>
12. Warranty Period
This product is warranted for a period of 5 years from the date of shipment.
For damages occurring at normal operation within this warranty period, repair is free of charge.
13. EN61558-1 , EN61558-2-16 Compliance Model ZWS-C series
14. CE Marking / UKCA Marking
■CE Marking
CE Marking, when applied to a product or packing material for a product covered by this handbook,
indicates compliance with the Low Voltage Directive, EMC Directive and RoHS Directive.
■UKCA Marking
UKCA Marking, when applied to a product or packing material for a product covered by this handbook,
indicates compliance with the Electrical Equipment (Safety) Regulations, Electromagnetic Compatibility
Regulations and Restriction of the Use of Certain Hazardous Substances in Electrical & Electronic Equipment
Regulations.
20/20
Ta Rated maximum ambient temperature : Ta max=70℃
SMPS incorporatinga short-circuit-proof safety isolating
transformer ( inherently or non-inherently)
SMPS ( Switch mode power supply unit )
ZWS10C series model certified altitude of 3,000m.
ZWS30C series model certified altitude of 3,000m.
Power factor
( Reference )
cosφ 0.3~0.6
ZWS30C/ ZWS50C series model at 100V~240VAC and 50~60Hz.
( except ZWS30C-5 )