TDK-Lambda HWS 30A-150A/ME Series User manual

A256-04-01/ME-B
1
TDK-Lambda
HWS 30A-150A/ME Series
INSTRUCTION MANUAL
HWS 30A-150A/ME Series
Instruction Manual
BEFORE USING THE POWER SUPPLY UNIT
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 products with no cover, do not touch them as there are high-voltage and high temperature parts inside.
Touching them might cause injury such as electric shock or burn.
 There are cases where high voltage charge remains inside the product immediately after the input is cut off.
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 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.

2
TDK-Lambda
HWS 30A-150A/ME Series
INSTRUCTION MANUAL
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 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): OVC Ⅱ and Class of equipment: Class Ⅰ.
This product is designed to be accessible only to service technicians as part of indoor use device.
GENERAL INSTALLATION INSTRUCTIONS
 These products are Class I and must therefore be reliably earthed and professionally installed in accordance with
the prevailing electrical wiring regulations and the safety standards covered herein.
 The degree of protection against harmful ingress of water is: Ordinary, IPX0. Therefore chemicals/solvents,
cleaning agents and other liquids must not be used.
 The first protective earth connection in the final installation must be marked with the protective earth symbol.

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TDK-Lambda
HWS 30A-150A/ME Series
INSTRUCTION MANUAL
SPECIAL INSTRUCTIONS FOR IEC/EN/ES/CSA 60601-1
 These products are designed for continuous operation within an overall enclosure, and must be mounted such that
access to the mains terminals is restricted. See Clause 8, IEC/EN/ES/CSA60601-1.
 These products are suitable for use in the presence of a flammable anesthetics mixture with air or oxygen or with
nitrous oxide: No
 These products are classed as ordinary equipment according to IEC/EN/ES/CSA60601-1 and are NOT protected against
the ingress of water.
 The output circuit has not evaluated for connecting to Applied Parts.
For end products intended to connect the output circuit to Applied Parts, suitable evaluation of the separation, leakage current,
dielectric voltage withstand, and related requirements should be conducted.
 The input circuit includes only one fuse in the Line conductor.
Consideration shall be given in the end-use product regarding addition of the second fuse having the same or better
characteristics in order to comply with fusing requirements of Clause 8.11.5 of the Standard.
 These products provide the following MOOP (means of operator protection): 2 MOOP between Primary and Secondary.
No means of patient protection (MOPP) are provided.
 When the PSU is installed within medical equipment an all pole mains input disconnect device must be fitted.
 Reference should be made to local regulations concerning the disposal of these products at the of their useful life.
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.
 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 STORAGE METHOD AND LONG-TERM STORAGE PERIOD
 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.
There is tendency that the leakage current of an aluminum 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

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TDK-Lambda
HWS 30A-150A/ME Series
INSTRUCTION MANUAL
(*1)
ME ：Approved by safety standards for
medical equipment.
MEA：Approved by safety standards for
medical equipment with cover type.
1. Model name identification method
HWS 30A – 5 / ME□
2. Terminal Explanation
HWS30A/ME, HWS50A/ME, HWS30A/MEA, HWS50A/MEA
① +V : + Output terminal
(15A max. / terminal)
② –V : – Output terminal
(15A max. / terminal)
③ FG : Frame Ground
④ L : Input terminal Live line (Fuse in line)
⑤ N : Input terminal Neutral line
⑥ Output voltage adjustment trimmer
⑦ Output monitoring indicator (Green LED)
*All screws size is M3.5
HWS100A/ME, HWS150A/ME, HWS100A/MEA, HWS150A/MEA
① +V : + Output terminal
(30A max. / terminal)
② –V : – Output terminal
(30A max. / terminal)
③ FG : Frame Ground
④ L : Input terminal Live line(Fuse in line)
⑤ N : Input terminal Neutral line
⑥ +S : + Remote sensing terminal
⑦ –S : – Remote sensing terminal
⑧ Output voltage adjustment trimmer
⑨ Output monitoring indicator (Green LED)
*All screws size is M3.5
Option
(*1)
Rated Output Voltage
Output Power type
Series
Name
6
7
1
2
3
4
5

5
TDK-Lambda
HWS 30A-150A/ME Series
INSTRUCTION MANUAL
3. Block Diagram
HWS30A/ME, HWS30A/MEA
HWS50A/ME, HWS50A/MEA
Rectifier Circuit
Filter Circuit
Switching Circuit
L
N
Control Circuit
OCP
Circuit
OVP
Circuit
Output
Sensing
Photo-
coupler
Photo-
coupler
Rectifier & Filter
Input
85～265VAC
FG
+V
-V
Output
OVP
Sensing
Line Filter
Inrush Current
Limit Circuit
Line Filter
Rectifier Circuit
PFHC Circuit
Inrush Current Limit Circuit
Filter Circuit
Switching Circuit
Control Circuit
L
N
Control Circuit
OCP
Circuit
OVP
Circuit
Output
Sensing
Photo-
coupler
Photo-
coupler
Rectifier & Filter
Input
85～265VAC
FG
+V
-V
Output
OVP
Sensing

6
TDK-Lambda
HWS 30A-150A/ME Series
INSTRUCTION MANUAL
HWS100A/ME, HWS150A/ME, HWS100A/MEA, HWS150A/MEA
・Circuit topology, Switching frequency
Switching Circuit
HWS30A/ME, HWS50A/ME, HWS30A/MEA, HWS50A/MEA : Flyback topology 100kHz
HWS100A/ME, HWS150A/ME, HWS100A/MEA, HWS150A/MEA : Cascade forward topology 120kHz
PFHC Circuit : Active filter : 65kHz (fixed)
・Fuse rating
HWS30A/ME - HWS100A/ME, HWS30A/MEA - HWS100A/MEA : 3.15A
HWS150A/ME, HWS150A/MEA : 5A
4. Sequence time chart
(*1) OVP point
5V-24V : 125～145%
48V : 115～135%
Line Filter
Rectifier Circuit
PFHC Circuit
Inrush Current Limit Circuit
Filter Circuit
Switching Circuit
Control Circuit
L
N
Control Circuit
OCP
Circuit
OVP
Circuit
Output
Sensing
Photo-
coupler
Photo-
coupler
Rectifier & Filter
Input
85～265VAC
FG
+V
-V
Output
OVP
Sensing
+S
-S
0V
Vout
0V
Input Voltage
Output Voltage
Input on
Input off
Input on
OVP act on
Input off
OCP act on
OCP reset
OVP point (*1)

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TDK-Lambda
HWS 30A-150A/ME Series
INSTRUCTION MANUAL
5. 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 FG terminal to earth (frame ground of the equipment etc.) by thick wire for safety and improvement
of noise sensitivity.
HWS30A/ME, HWS50A/ME, HWS30A/MEA, HWS50A/MEA
HWS100A/ME, HWS150A/ME, HWS100A/MEA, HWS150A/MEA
・Basic connection (Local sensing)
Connect “+S” terminal to “+V” terminal, and
“-S” terminal to “-V” terminal with the attached
short pieces .
(Short pieces are mounted at time of shipment.)
・Remote sensing connection
Connect “+S” terminal to “+” terminal of load, and
“-S” terminal to “-” terminal of load with wires.
If remote sensing terminals are opened, the output will rise
and OVP may be triggered.
Recommended torque : HWS30A/ME - HWS150A/ME, HWS30A/MEA - HWS150A/MEA
M3.5 screw 1.0N･m(10.2kgf･cm) - 1.6N･m(16.3kgf･cm)
+
Load
-

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TDK-Lambda
HWS 30A-150A/ME Series
INSTRUCTION MANUAL
6. Explanation of Functions and Precautions
6-1. Input Voltage Range
Input voltage range is single phase 85-265VAC(47-63Hz) or 120-370VDC. Input voltage, which is out of specifica-
tion, might lead unit damage. For cases where conformance to various safeties required, described as 100-240VAC
(50-60Hz).
Note : HWS-A/ME series and HWS-A/MEA series are able to withstand input of 300VAC for 5 seconds (No damage). Please
note that to satisfy the electrical characteristics, the input voltage range must be within 85-265VAC.
6-2. Output Voltage Range
Output voltage is set the rated value at shipment. V.ADJ trimmer can adjust the output voltage within the range.
Output voltage range is within +/- 20% (48V : +10%/-20%) of nominal output voltage.
To turn the trimmer clockwise, the output voltage will beincreased. Take note when the output voltage is increased
excessively, over voltage protection (OVP) function may trigger and voltage will be shut down. Furthermore, when
increasing the output voltage reduce the output current so as not to exceed the maximum output power.
6-3. Inrush Current
This series equipped Power thermistor to limit the inrush current. This series are Power thermistor method so that
higher 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.
6-4. Over Voltage Protection (OVP)
The OVP function (Inverter shut down method, manual reset type) is provided. OVP function operates within
5-24V: 125% - 145%, 48V: 115%-135% of nominal output voltage.
When OVP triggers, the output will be shut down. 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 protec-
tive diode in series to the output power line.
6-5. Over Current Protection (OCP)
HWS30A/ME, HWS50A/ME, HWS30A/MEA, HWS50A/MEA
: Fold back limit and Hiccup mode with automatic recovery.
HWS100A/ME, HWS150A/ME, HWS100A/MEA, HWS150A/MEA
: Constant current limit and 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 canceled. Never operate the unit under
over current or shorted conditions, which may leads damage. OCP setting is fixed and not to be adjusted externally.

9
TDK-Lambda
HWS 30A-150A/ME Series
INSTRUCTION MANUAL
6-6. Remote Sensing (+S, –S terminal)
(For HWS100A/ME, HWS150A/ME, HWS100A/MEA, HWS150A/MEA)
This function compensates voltage drop of wiring from output terminals to load terminals. Connect “+S” terminal to
“+” terminal of load and “–S” terminal to “–” terminal of load with sensing wires.
The total line voltage drop (+ side line and - side line) shall be less than 0.3V.
In case that sensing line is too long, it is necessary to put an electrolytic capacitor in following 3 placed;
1) Across the load terminal,
2) Between “+S” terminal and “+V” terminal,
3) Between “–S” terminal and “–V” terminal.
If remote sensing terminals are opened, the output will rise and OVP may be triggered.
6-7. Output Ripple & Noise
The standard specification for maximum ripple value is measured according to measurement circuit specified by
JEITA RC-9131B. 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 measure accurately if the probe ground lead of oscilloscope is too long.
+V
-V
Power
Supply
Coaxial Cable
1.5m 50WOscilloscope
Load
R:50W
C:4700pF
100MHz
R
C
Power
Supply
+S
+V
-V
-S
+
-
Load
+
+
+

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TDK-Lambda
HWS 30A-150A/ME Series
INSTRUCTION MANUAL
6-8. Series Operation
For series operation, either method ( A ) or ( B ) is possible.
Method ( A ) Method ( B )
Note : In case of (A).please connect bypass diodes to prevent reverse voltage.
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.
*Series operation for HWS100A/ME, HWS150A/ME, HWS100A/MEA, HWS150A/MEA possible
without bypass diode. Never use when one of the unit not operate, which may leads damage.
6-9. Parallel Operation
(A) Operation to increase the Output Current is not possible.
(B) Operation as a Backup Power Supply is possible as follows.
1. Set the power supply output voltage higher by the amount of forward voltage drop ( VF ) of the diode.
2. Please adjust the output voltage of each power supply to be the same.
3. Please use within the specifications for output voltage and output power.
4. Please select a reverse current prevention diode with maximum forward current rating more than output load cur-
rent.
(A) (B)
6-10. Isolation Test
Isolation resistance between Output – FG terminal is more than 100MΩat 500VDC. For safety operation, voltage set-
ting of DC isolation tester must be done before the test. Ensure that the unit is fully discharged after the test.
■Output – FG terminal : 500VDC More than 100MΩ
( A ) HWS30A/ME, HWS50A/ME ( B ) HWS100A/ME, HWS150A/ME
HWS30A/MEA, HWS50A/MEA HWS100A/MEA, HWS150A/MEA
-V
-V
+V
+V
＋
－
Load
Power
Supply
Power
Supply
-V
-V
+V
+V
＋
＋
－
－
Load
Load
Power
Supply
Power
Supply
AC(L)
AC(N) +V
-V
FG
Isolation
Tester
Power
Supply
Power
Supply Load
+V
-V
+V
-V
＋
－
AC(L)
AC(N)
+V
-V
FG
+S
-S
Isolation
Tester

11
TDK-Lambda
HWS 30A-150A/ME Series
INSTRUCTION MANUAL
6-11. Withstand Voltage
This series is designed to withstand 3.0kVAC between input and output, 2.0kVAC between input and FG and
500VAC between output and FG each for 1 minute. When testing withstand voltage, set current limit of withstand
voltage test equipment at 20mA. The applied voltage must be gradually increased from zero to 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 ~ FG (solid line) : 2.0kVAC, 1min (20mA)
Input ~ Output (dotted line) : 3.0kVAC, 1min (20mA)
( A ) HWS30A/ME, HWS50A/ME ( B ) HWS100A/ME, HWS150A/ME
HWS30A/MEA, HWS50A/MEA HWS100A/MEA, HWS150A/MEA
■Output ~ FG : 500VAC, 1min (20mA)
( A ) HWS30A/ME, HWS50A/ME ( B ) HWS100A/ME, HWS150A/ME
HWS30A/MEA, HWS50A/MEA HWS100A/MEA, HWS150A/MEA
Note1 : This product have monolithic ceramic capacitor in secondary circuit to frame ground.
Some of the withstand voltage tester may generate high voltage at the matching with monolithic
ceramic capacitor and may cause the unit damage. So, please check the waveform of test voltage.
Note2 : In case of using external noise filter, capacitance between “Input and FG” might be increased. When
testing withstand voltage between “Input and Output”, there is a possibility exceeding withstand volt-
age between “Output and FG” (500VAC). Please check the voltage between “Output and FG”.
If the voltage exceeding withstand voltage, please add external capacitor to “Output and FG”.
It can decrease the voltage.
On the other hand, no need to check the voltage in case of “Output and FG” is shorted.
AC(L)
AC(N) +V
-V
FG
Withstand
Voltage
Tester
AC(L)
AC(N) +V
-V
FG
Withstand
Voltage
Tester
AC(L)
AC(N)
+V
-V
FG
+S
-S
Withstand
Voltage
Tester
The example of noise filter circuit that
may increasing capacitance value between
“Input and FG”
(Capacitance value in dashed line is added.)
External capacitor adding point
or short point.
Even in the case of “+V and FG”,
There is a similar effect.

12
TDK-Lambda
HWS 30A-150A/ME Series
INSTRUCTION MANUAL
7. Mounting Method
7-1. Mounting Method
(1) This is convection cooling type power supply. In the consideration for the heat radiation and safety.
Please take a distance more than 15mm between the power supply and the peripheral parts.
When lining up multiple units, please make sure to place them 15mm or more apart from each other.
(2) Please take insulation distance (space) more than 5mm for the component side at the open frame type.
(3) The maximum allowable penetration of mounting screws is 6mm.
(4) Recommended torque for mounting screw
HWS30A/ME ～ HWS150A/ME (M3 screw) : 0.49 N×m ( 5.0 kgf×cm )
HWS30A/MEA ～ HWS150A/MEA (M3 screw) : 0.49 N×m ( 5.0 kgf×cm )
7-2. Output Derating according to the Mounting Directions
Recommend standard mounting is direction ( A ). Direction ( B ), ( C ) and ( D ) are also possible. For oth-
er mounting directions, please inquire to TDK-Lambda.
Refer to the derating below. Please do not use mounting direction ( E ), where the PCB will be on the topside
and heat will be trapped inside the unit. Load (%) is percent of maximum output power or maximum output cur-
rent, do not exceed its derating of maximum load.
■Mounting direction
Standard Mounting
(A)
(B)
(C) (D)
(E)
Not Possible
15mm or more
Provide punching, etc. to allow air to pass.
15mm or more
Air flow
Sheet Metal

13
TDK-Lambda
HWS 30A-150A/ME Series
INSTRUCTION MANUAL
■Output Derating
HWS30A/ME
HWS50A/ME
HWS100A/ME
Ta (℃)
Load (％)
Mounting (A),(B),(C),(D)
-10 ～ +50 100
60 60
70 40
Ta (℃)
Load (％)
Mounting (A) Mounting (B),(D) Mounting (C)
-10 ～ [phone]
50 100 100 86
60 70 65 58
70 40 30 30
Ta (℃)
Load (％)
Mounting (A) Mounting (B) Mounting (C),(D)
-10 ～ [phone]
50 100 80 80
60 65 60 60
70 30 30 20

14
TDK-Lambda
HWS 30A-150A/ME Series
INSTRUCTION MANUAL
HWS150A/ME
HWS30A/MEA ( With cover type )
HWS50A/MEA ( With cover type )
Ta (℃)
Load (％)
Mounting (A) Mounting (B) Mounting (C),(D)
-10 ～ [phone]
40 100 100 90
50 100 80 80
60 60 60 60
70 20 20 20
Ta (℃)
Load (％)
Mounting (A) Mounting (B),(C),(D)
-10 ～ [phone]
50 100 80
60 60 60
70 40 40
Ta (℃)
Load (％)
Mounting (A) Mounting (B),(D) Mounting (C)
-10 ～ [phone]
50 100 76 73
60 60 53 46
70 20 30 20

15
TDK-Lambda
HWS 30A-150A/ME Series
INSTRUCTION MANUAL
HWS100A/MEA ( With cover type )
*Refer to dotted line for output derating curve, when input voltage range is "85VAC≦Vin<90VAC" for the Mounting (A).
HWS150A/MEA ( With cover type )
*Refer to dotted line for output derating curve, when input voltage range is "85VAC≦Vin<90VAC" for the Mounting (A).
Ta (°C)
Load (%)
Mounting (A) Mounting (B) Mounting (C) Mounting (D)
-10 ～ [phone]
35 100 100 92 100
50 100 65 65 65
60 60 37 37 42
70 20 10 10 20
Ta (°C)
Load
(%)
Mounting (A) Mounting (B),(C),(D)
-10 ～ [phone]
50 100 60
60 60 35
70 20 10

16
TDK-Lambda
HWS 30A-150A/ME Series
INSTRUCTION MANUAL
8. Wiring Method
(1) The output load line and input line shall be separated, and use all lines as thick and short as possible to make
lower impedance. The output load line and input line shall be twisted or use shielded wire to improve noise
sensitivity.
(2) Remote sensing lines shall be twisted or use shielded wire, and separated from the output lines.
(3) Noise can be eliminated by attaching a capacitor to the load terminals.
(4) The recommended wire type, torque and crimp-type terminal :
MODEL
Recommended
Wire
Recommended torque
Recommended
crimp
-
type terminal
D
(MAX)
t
(MAX)
Mounting
piecs
(MAX)
HWS30A/ME, /MEA
HWS50A/ME, /MEA
AWG14-22 All terminal M3.5 Screws
1.0N･m (10.2kgf･cm)～1.6N･m (16.3kgf･cm) 6.8mm 0.8mm 2 piece
HWS100A/ME, /MEA
AWG12-22 Output terminal M3.5 Screws
1.0N･m (10.2kgf･cm)～1.6N･m (16.3kgf･cm) 8.1mm 1.0mm 1 piece
0.8mm
2 piece
AWG14-22 Other terminal M3.5 Screws
1.0N･m (10.2kgf･cm)～1.6N･m (16.3kgf･cm) 6.8mm 0.8mm 2 piece
HWS150A/ME,/MEA
AWG10-22 Output terminal M3.5 Screws
1.0N･m (10.2kgf･cm)～1.6N･m (16.3kgf･cm) 8.1mm
1.0mm
1 piece
0.8mm 2 piece
AWG14-22 Other terminal M3.5 Screws
1.0N･m (10.2kgf･cm)～1.6N･m (16.3kgf･cm) 6.8mm 0.8mm 2 piece
Note 1 : When using separate loads, use of two pcs. of 0.8mm thick crimp-type terminal is recommended.
Note 2 : For recommended diameter, refer to wire maker recommended allowable current and voltage drop.
Especially, for 5V model, output current is large. Thick diameter wire is recommended.
9. 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.
10. 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-lug 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.
HWS30A/ME-100A/ME, HWS30A/MEA-100A/MEA ： 3.15A
HWS150A/ME, HWS150A/MEA ： 5A

17
TDK-Lambda
HWS 30A-150A/ME Series
INSTRUCTION MANUAL
11. Before concluding that the unit is at fault…
Before concluding that the unit is at fault, make the following checks.
(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 voltage control (V.ADJ) is properly adjusted.
(5) Check if the remote sensing terminal is not opened. The output will rise and OVP may be triggered.
(6) Check if the output current and output power does not over specification.
(7) Audible noise can be heard when input voltage waveform is not sinusoidal wave.
(8) Audible noise can be heard during Dynamic-Load operation.
(9) Ensure that a large capacitor is not connected on the output side.
Please use within maximum capacitance shown below.
If connecting more than the following capacity, conditioning is needed. Please contact us for details.
Maximum e
xternal capacitance
MODEL
5V
12V
15V
24V
48V
HWS30A/ME, HWS50A/ME
HWS30
A
/ME
A
,
HWS50
A
/M
EA
10,000uF 5,000uF 2,000uF 500uF
HWS100A/ME, HWS150A/ME
HWS100
A
/ME
A
,
HWS150
A
/M
EA
10,000uF 5,000uF 1,000uF
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. 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.