TDK-Lambda DRB120 Series User manual

PA620-04-xxx
TDK-Lambda
DRB120 Series
INSTRUCTION MANUAL
PA634-04-02
For further installation instructions refer to web link:
emea.tdk-lambda.com/PA634-04-01_
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 Symbols CAUTION
. DO NOT MODIFY OR DISASSEMBLE THE POWER SUPPLY.
. READ INSTRUCTION MANUAL BEFORE CONNECTING TO MAINS.
. ELECTRIC SHOCK HAZARDOUS ON THE CONNECTOR SECTION.
NOTICE:
(1) Installing/Storage Environment
1. Store the product with ambient temperature –40 to +85 °C, and relative humidity 5 to 95% (No dewdrop).
2. Avoid operating the unit in over current, short circuit or out of input voltage range which could result in damage.
3. Confirm connections to input/output terminals are correct as indicated in the instruction manual.
4. Use the product where the relative humidity is 5 to 95% (No dewdrop).
5. Avoid places where the product is subjected to direct sun light.
6. Avoid places where the product is subjected to penetration of liquid, foreign substance or corrosive gas.
7. 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 any source of shock or vibration.
8. 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 sources.
9. Don’t use the product in the environment with strong electromagnetic field, corrosive gas and conductive
substance.
10. Model/type reference: DRB120-24-1-xyz (where xyz is optional and can be alphanumeric
characters or blank and it is not a safety related information - product ratings unchanged)
Precautions in Using the product:
When the product is used under the circumstance or environment below, ensure adherence to limitations of
the ratings and functions.
Also take countermeasures for safety precautions such as fail-safe installations.
1. Under the circumstances or environment which are not described in the instruction manual.
2. For nuclear power control, railway, aircraft, vehicle, incinerator, medical equipment, entertainment
equipment, safety device etc.
3. For applications where death or serious property damage is possible and extensive safety precautions are required.
4. Not to be used with a high inductive power source as it may cause unstable operation of the power supply.
Note: CE MARKING
CE Marking, when applied to a product covered by this handbook indicates compliance with the following:
Low Voltage Directive in that it is complies with EN60950-1.
EMC Directive
Restriction of the use of certain Hazardous Substances Directive
DR
B
120
Series
Instruction
Manual

TDK-Lambda
DRB120 Series
INSTRUCTION MANUAL
PA634-04-02
2. Terminal Explanation
2-1. DRB120
1 +V: +Output terminal
2 - V: - Output terminal
3 V.ADJ: Output voltage adjust trimmer
The output voltage rises when trimmer is
turned clockwise.
4 L: AC Input terminal
Live line (fuse in line)
5 N: AC Input terminal
Neutral line
6 : Protective Earth
Connect to safety ground of apparatus or equipment.
7 DC OK : Green LED lights when Output
voltage is turn on and within specification
8 -DC : Optocoupler
9 +OK : Optocoupler
Note: According to EN/UL60950-1 multi-
strand flexible cables connected to the input
require ferrule.
3. 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 (Protective Earth) terminal of input connector to ground terminal of the equipment.
• The output load line and input line shall be separated and twisted to reduce noise sensitivity.
When connecting or removing input and output wire, do not apply stress to PCB.
WIRING
CONNECTOR
Recommended Wire Rated Torque
INPUT 10.3 kgf.cm
(L, N, )) (9 lbf.in)
OUTPUT 10.3 kgf.cm
(+V, -V) (9 lbf.in)
OUTPUT 10.3 kgf.cm
(DC OK) (9 lbf.in)
10~24 AWG
10~24 AWG
10~24 AWG

TDK-Lambda
DRB120 Series
INSTRUCTION MANUAL
PA634-04-02
4. Explanation of Functions and Precautions
4-1. Input Voltage Range
Input voltage range is single phase 85 ~ 264VAC (47~63Hz)
can withstand 300VAC surge for 5 seconds during operation.
Input voltage which is out of specification may cause unit to
damage. For cases where conformance to various safety
specs (UL, CSA, EN) are required, input voltage range will
be 100 ~ 240VAC (50/60Hz).
4-2. Output Voltage Range
Output voltage is set to the rated value at shipment. V.ADJ
trimmer on the front panel side can be used to adjust the
output voltage within the range specified (refer to
specifications for adjustable range).
To turn the trimmer clockwise, the output voltage will be
increased. Take note when the output voltage is increased
excessively, over voltage protection (OVP) function may
trigger and the output voltage will shut down. Furthermore,
when increasing the output voltage, reduce the output
current so as not to exceed the maximum output power.
4-3. Over Voltage Protection ( OVP )
The OVP function will shut down the output. To reset the
OVP, disconnect the input voltage from the power supply for
a minute and then re-apply. Possible to hiccup if the unit
prior to OVP point is already loaded. The OVP point is fixed
and cannot be adjusted externally.
4-4. Over Current Protection ( OCP )
Hiccup mode with automatic recovery. If the output
current is >101% of peak load, the unit will hiccup.
Avoid continuous operation in overload or short condition
as it may result in damage to the power supply.
4-5. Peak output current
The DRB120 can deliver up to 120% peak current for 10
seconds aiding the startup of capacitive loads and
operation of downstream circuit breakers. The output
peak current specification is Duty ≤35%, ≤rated output
power and ≤5Arms.
4-6. Output Ripple & Noise
The standard specification for maximum ripple value is
measured according to measurement circuit as below. When
load lines are longer, ripple 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.
Oscilloscope
Bandwidth : 20MHz
+
-
P.S. C1 C2
Load
1.5m 50
Ω
Cable
300mm
C
1
: 47
uF Electrolytic Capacitor
C2 : 0.1uF Film Capacitor
+
4-7. Series Operation
For series operation, either method (A) or (B) is possible.
Method ( A )
Output
Terminal
Output
Terminal
Power
Supply
Load
Method ( B )
Output
Terminal
Output
Terminal
Power
Supply
Load
Load

TDK-Lambda
DRB120 Series
INSTRUCTION MANUAL
PA634-04-02
4-8. Isolation Test
Isolation resistance between output and (Protective Earth)
shall be 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 ~ (Protective Earth) : 500VDC 100MΩor more
AC(L)
AC(N)
-
Isolation
Tester
DC
+
OK
COM
4-9. Withstand Voltage
This series is designed to withstand 4243VDC between input
and output, 2500VDC between input and (Protective
Earth) and 707VDC between output and the (Protective
Earth) each for 1 minute. When testing withstand voltage,
set current limit of the withstand voltage test equipment to
20mA (Output - (Protective Earth) : 100mA ). 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 followed :
Input ~ Output (dotted line )
4243VDC 1min. ( 20mA )
Input ~ (Protective Earth) (solid line)
2500VDC 1min. ( 20mA )
AC(L)
AC(N) DC
-
Withstand
Voltage
Tester
OK
+
COM
Output ~ (Protective Earth)
707VDC 1min. (100mA)
AC (L)
AC (N) DC
+
Withstand
Voltage
Tester
OK
-
COM
5. DC OK
In normal operation the DC OK (optocoupler) is closed
when the output voltage is greater than 80% of nominal
output voltage. When the output is less than 80% of nominal
output voltage, the optocoupler will be opened.

TDK-Lambda
DRB120 Series
INSTRUCTION MANUAL
PA634-04-02
6. Mounting Directions
Recommended standard mounting method is vertical with
the output connector uppermost. Do not exceed the load
deratings. See section 9. Leave enough space surround the
units to ventilate heat efficiently.
Minimum installation clearance:
40mm on top, 20mm on the bottom, A=5mm which is
recommended on the left and right side when products are
permanently loaded with full 120W. In case the adjacent
device is a heat source, A=15mm clearance is recommended
6.1. Power supply mounting on DIN RAIL (TS35
or equivalent)
Make sure input and output wire disconnected when
mount power supply onto rail
(1) Tilt the unit slightly rearwards, fit the unit
over top hat rail.
(2) Slide it downward until it hits the stop.

TDK-Lambda
DRB120 Series
INSTRUCTION MANUAL
PA634-04-02
(3) Press against the bottom front side for locking.
Shake the unit slightly to check the locking action.
(4) In order to tighten the unit mounting, the Din rail
stopper attached on both sides of the unit is recom-
mended.
6.2. Power supply removal from DIN RAIL
(1) Switch main power off and disconnect your system from
the supply network. Pull the Latch on the rear lower edge
of the unit downwards and gently lift lower front edge
of the unit (tipping upwards) and remove it.
7. Output Derating – DRB120 series
8. 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.
EMI reduction performance by winding the cable
around a toroidal ferrite core several times. Use any
appropriate commecially available ferrite core from local
vendor.
For safety and EMI considerations, connect (Protective
Earth) terminal of input connector to ground terminal of
equipment.
8.1 EMC
DRB120 complies with the provisions of the EMC directive
and meets the following standards:
Emissions: EN55011/EN55032 Class B, EN61204-3 Class A
Immunity: EN61000-4-2, -3, -4, -5, -6, -8, -11
9. External Fuse Rating
If required a 250Vac/3.15A rated fuse rating, it should be
fitted externally on the input line. Surge current flows when
line turns on. Use slow-blow fuse or time-lag type fuse. Do
not use fast-blow fuse. Fuse rating is specified 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

TDK-Lambda
DRB120 Series
INSTRUCTION MANUAL
PA634-04-02
10. DRB120 series UL508 Listed Condition
1) Wire requirement: use minimum 75°C wire, use copper
conductor only
2) For use in a Pollution degree 2 environment only
3) The product is considered for use where maximum
surrounding air temperature does not exceed 70°C. When
installing the product please refer to section 9for derating.
4) Indoor use only
Product marking:
TDK-Lambda Singapore Pte. Ltd.
(Sales, Services and R&D)
1008 Toa Payoh North #06-01/08, #07-01/03
Singapore 318996
Telephone: [phone]
Facsimile: [phone]
WEBSITE: www.tdk-lambda.com.sg
Note: Model name, input voltage range, nominal input
voltage, maximum output current, country of manufacture,
additional approval markings and CE mark are shown in
accordance with the product specification.
11. Before concluding that the unit is at fault.
Before concluding that the unit is at fault, make the
following 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.
Check if the output current and output wattage do not exceed
the specification.
Audible noise can be heard during dynamic-load operation.
Audible noise can be heard when input voltage waveform is
not sinusoidal wave.
Audible noise can be heard during no/light load where the
unit is in bursts mode condition.
12. Returns
Please contact your local sales office or visit our website to
arrange return of any faulty product.
WIRING
CONNECTOR
Recommended Wire Rated Torque
INPUT 10.3 kgf.cm
(L, N, ) (9 lbf.in)
OUTPUT 10.3 kgf.cm
(+V, -V) (9 lbf.in)
OUTPUT 10.3 kgf.cm
(DC OK) (9 lbf.in)
10~24 AWG
10~24 AWG
10~24 AWG