TDK-Lambda JWT Series User manual

A178-04-01D
TDK-Lambda
JWT Series
INSTRUCTION MANUAL
JWT Series
Instruction Manual
BEFORE USING THE POWER SUPPLY UNIT
Pay attention to all warnings and cautions before using the unit. Incorrect usage could lead to an electrical
shock, damage to the unit or a fire hazard.
WARNING and CAUTION
● Do not modify.
● Do not touch the internal components, they may have high voltage or high temperature. You may get elec-
trical shock or burned.
● When the unit is operating, keep your hands and face away from it, you may get injured by an accident.
● This power supply is primarily designed and manufactured to be used and enclosed in other equipment.
Stick the WARNING label for users on the system equipment and describe the notice in the instruction
manual.
● Never operate the unit under over current or shorted conditions for 30 seconds or more which could result
in damage or insulation failure. There is no possibility for fire or burning.
● Confirm connections to input/output terminals are correct as indicated in the instruction manual.
Note: CE MARKING
CE Marking, when applied to a product covered by this handbook, indicates compliance with the low voltage
directive.

TDK-Lambda
JWT Series
INSTRUCTION MANUAL
1
1. Terminal Explanation
JWT75, JWT100 ( Block terminal type ) JWT75 , JWT100 ( Connector Type )
(1) CH1
- Block terminal type -
V1 : CH1 + Output terminal
G1 : CH1 - Output terminal
- Connector type – ( 7A max. / pin )
CN51 - 1,2 : CH1 + Output pin
CN51 - 3,4 : CH1 - Output pin
(2) CH2
- Block terminal type -
V2 : CH2 + Output terminal
G2 : CH2,CH3 Common Ground
- Connector type – ( 7A max. / pin )
CN51 - 5,6 : CH2 + Output pin
CN51 - 7,8 : CH2,CH3 Common Ground
(3) CH3
- Block terminal type -
G2 : CH2,CH3 Common Ground
V3 : CH3 - Output terminal
- Connector type -
CN51 - 7,8 : CH2,CH3 Common Ground
CN51 - 9,10 : CH3 - Output pin
(4) Frame Ground
- Block terminal type -
FG
- Connector type -
CN1 - 1
(5) Input terminal Live line ( Fuse in line )
- Block terminal type -
L
- Connector type -
CN1 – 2
(6) Input terminal Neutral line
- Block terminal type -
N
- Connector type -
CN1 - 4
(7) Safety earth :
(8) Output voltage of CH1 adjustment trimmer
(9) Output monitoring indicator ( Green LED )
(10) Remote ON/OFF control ( Option ) : + R
(11) Remote ON/OFF control ( Option ) : - R
* Connector ( JST ) for Remote ON/OFF control
Connector
Housing
Terminal Pin
B2B - XH - AM XHP - 2 BXH - 001T - P0.6
or SXH - 001T - P0.6
* Input & Output connector ( MOLEX )
JWT75/JWT100
Connector Housing Terminal Pin
Input
5289
-
4A
5199
-
04
5194
Output
5277
-
10A
5196
-
10
5194

TDK-Lambda
JWT Series
INSTRUCTION MANUAL
2
2. Terminal connecting method
· Input must be off when making connections.
· Connect FG terminal to ground terminal of the equipment.
· Output current of each connector pin must be less than 7A. ( For connector type )
· The output load line and input line shall be separated and twisted to improve noise sensitivity.
· Remote ON/OFF control lines shall be twisted or use shielded wire.
· Use the output connector specified in outline drawing. Also, use recommended crimping tool.
JWT75, JWT100
3. Explanation of Functions and Precautions
3-1. Input Voltage Range
Input voltage range is single phase 85 ~ 265VAC ( 47 ~
63Hz ) or 120 ~ 330VDC. Input voltage which is out of
specification may cause unit damage.
3-2. Output Voltage Range
V.ADJ trimmer on the front panel side can adjust the out-
put voltage of CH1 within the range. To turn the trimmer
clockwise, the output voltage will be increase. Output
voltage range is within 5 ~ 5.25V. Note over voltage pro-
tection ( OVP ) function may trigger if the output voltage
is increased excessively.
3-3. Inrush Current
This series has used Power Thermistor to protect the cir-
cuit from Inrush Current. Please carefully select input
switch and fuse in cases of the high temperature and re-
input the power.
3-4. WATTBOX
This series designed as a WATTBOX. You are flexibly
adjust output power of each channel within the limit of
the maximum total output power in specification.
WTOTAL ³ WCH1 + WCH2 + WCH3
WCH1 : Less than maximum CH1 output power.
WCH2 : Less than maximum CH2 output power.
WCH3 : Less than maximum CH3 output power.
3-5. Minimum output Current
The output voltage of all channel is stabilized when min-
imum output current of CH1 is more than 10% of maxi-
mum output current.
3-6. Over Voltage Protection ( OVP )
The OVP function ( Inverter shut down method, manual
reset type ) built into CH1 output only. When OVP of
CH1 channel triggers, the all outputs will be shut down.
The input shall be removed for a few minutes, and then
re-input for recovery of the output to recover. OVP set-
ting shall be fixed and not to be adjusted externally.
Safety Earth :
For safety, Connect mounting holes on bot-
tom of chassis to ground terminal of the equip-
ment. Screw must be used M4. on the bottom of
chassis.

TDK-Lambda
JWT Series
INSTRUCTION MANUAL
3-7. Over Current Protection ( OCP )
Constant current limiting, automatic recovery. OCP func-
tion operates when the output current exceeds 105% of
maximum output current on specification. The output will
be automatically recovered when the overload condition
is canceled. Never operate the unit under over current or
shorted conditions over 30 seconds which could result in
damage or insulation failure.
3-8. Output Ripple & Noise
The standard specification for maximum ripple value is
measured according to measurement circuit specified by
EIAJ-RC9131. When load lines are longer, ripple will be-
comes larger. In this case, electrolytic capacitor, film ca-
pacitor, 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.
+
-
Power
Supply
Coaxial Cable
1.5m 50Ω
Load
R:50Ω
C:4700pF
C
ROscillo-
scope
100MHz
3-9. Remote ON/OFF Control
( Optional Spec. )
Remote ON/OFF control function is available as option
with model name followed by /R. Using this function al-
lows the user to turn the all outputs on and off without
having to turn the AC input on and off. It is controlled by
the voltage applied to +R and -R. This circuit is in the
Secondary ( output ) side of the power supply unit. Do not
connect in the Primary ( input ) side. And this circuit is
isolated from the output by a photocoupler.
Power
Supply
1kW
-R
+R
R
SW
E
The control mode is shown below.
+ R &
-
R terminal condition
Output Condition
S
W ON ( Higher than 4.5V )
ON
SW OFF ( Lower than 0.8V )
OFF
External voltage level : E
External resistance : R
4.5
~
12.5VDC
No required
12.5~24.5VDC
1.5
k
W
4. Isolation Test / Withstand Voltage
4-1 Isolation Test
Isolation resistance between output and FG ( chassis )
shall be more than 100MW at 500VDC. For safety opera-
tion, voltage setting of DC isolation tester must be done
before the test. Ensure that the it is fully discharged after
the test.
Output ~ FG ( chassis )
4-2. Withstand Voltage
This series is designed to withstand 3.0kVAC between
input and output, 2.0kVAC between input and FG ( chas-
sis ) and 500VAC between output and the FG ( chassis )
each for 1 minute. When testing withstand voltage, set
current limit of the withstand voltage test equipment to
20mA ( Output - FG ( chassis ) : 100mA ). The applied
voltage must be gradually increased from zero to the test-
ing 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. Con-
nect input and output as follows.
3

TDK-Lambda
JWT Series
INSTRUCTION MANUAL
Input ~ FG ( chassis ) : solid line
Input ~ Output : dotted line
Output ~ FG ( chassis )
5. Mounting Directions
5-1. Output Derating according to the Mounting Di-
rections
Recommend standard mounting is method ( A ). Method
( B ) and ( C ) are also possible. Refer to the derating be-
low. Please do not use installation method ( E ), where the
PCB will be on the top side and heat will be trapped in-
side the unit. Method ( D ) is possible for JWT75, but
prohibit for JWT100. In the following derating curve,the
maximum output current is considered to be 100%.
( A )
Output Derating
Standard Mounting ( A ) Direction ( Open frame )
100
-10
80
60
40
20
0
0 20 40 50 65
Ambient Temperature ( °C )
(%)
Output Current
( B )
( C )
( D )
Prohibit for JWT100
( E )
Prohibit
Standard Mounting
4

TDK-Lambda
JWT Series
INSTRUCTION MANUAL
Open Frame ( Without Cover )
Model
JWT75
JWT100
Amb. Temp.
A
B
C
D
A
B
C
D
-
10
~
+ 35
°
C
100 100 100 100 100 100 100 -
40
°
C
100 100 100 83 100 100 100 -
45
°
C
100 100 83 67 100 100 83 -
50
°
C
100 83 67 50 100 83 67 -
55
°
C
83 67 50 - 83 67 50 -
60
°
C
67 50 - - 67 50 - -
65
°
C
50 - - - 50 - - -
With Cover
M
o
del
JWT75
JWT100
Amb. Temp
A
B
C
D
A
B
C
D
-
10
~
+35
°
C
100 100 100 100 100 100 100 -
35
°
C
100 100 80 80 100 80 80 -
40
°
C
100 80 60 60 100 60 60 -
45
°
C
100 60 - - 80 - - -
50
°
C
80 - - - 60 - - -
55
°
C
60 - - - - - - -
5-2. Mounting Method
(1) This is a 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) The maximum allowable penetration of mounting
screws is 6mm.
(3) Recommended torque for mounting screw.
M4 screw : 1.27 N×m
( 13.0 kgf×cm )
5-3. Optional sheet metal parts for mounting
Optional sheet metal mounting parts are available to meet
following mounting methods. Contact to our sales repre-
sentatives.
DIN Rail Type
6. Wiring Method
 The output load line and input line shall be
separated and twisted to improve noise sensitivity.
 Use all lines as thick and short as possible to make
lower impedance.
 Noise can be eliminated by attaching a capacitor to
the load terminals.
 For safety and EMI considerations, connect FG
terminal of JWT series to mounting set ground
terminal.
 The recommended torque for the terminal piece:
JWT75, JWT100 ( M3 Screws ) : 0.49 N×m
( 5.0 kgf×cm )
7. External Fuse Rating
Refer to the following fuse rating when selecting the ex-
ternal fuses that are to be used on input line. Surge current
flows when line turns on. Use slow-blow fuse or time-lug
type fuse. Do not use fast-blow fuse. Fuse rating is speci-
fied by in-rush current value at line turn-on. Do not select
the fuse according to input current (rms.) values under the
actual load condition.
JWT75, JWT100 : 3.15A
15mm or more
Provide punching, etc. to allow air to pass.
15mm or more
Air flow
Sheet Metal
5

TDK-Lambda
JWT Series
INSTRUCTION MANUAL
8. Before concluding that the unit is at fault...
Before concluding that the unit is at fault, make the fol-
lowing checks.
· Check if the rated input voltage is connected.
· Check if the wiring of input and output is correct.
· Check if the wire material is not too thin.
· Check if the output voltage control ( V.ADJ ) is
properly adjusted.
· If you use function of the Remote ON/OFF control,
Check if the Remote ON/OFF control connector is
not opened.
· Check if the output current and output wattage dose
not over specification.
· Check if the output current of CH1 is more than 10%
of maximum output current.
· Audible noise can be heard during Dynamic-Load
operation.
· Audible noise can be heard when input voltage
waveform is not sinusoidal wave.
9. Notes
1) Over voltage Category II.
2) Radio Interference Suppression Test is not per-
formed.
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