Page 1 of 6 Rev 1
February 3, 2020
DRB-480 Handbook
DDA 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 Symbols
CAUTION
DO NOT MODIFY, DISASSEMBLE THE POWER SUPPLY.
READ INSTRUCTION MANUAL BEFORE CONNECTING TO INPUT.
ELECTRIC SHOCK HAZARDOUS ON THE CONNECTOR SECTION.
NOTICE:
Installing/Storage Environment
1. Store and operate the product in accordance with the specifications for ambient temperature and
humidity.
2. Avoid operating the unit in over current, short circuit conditions or outside the specified input voltage
range as damage may occur.
3. Confirm connections to input/output terminals are correct as indicated in the instruction manual.
4. Avoid places where the product is subjected to direct sun light.
5. Avoid places where the products are subjected to penetration of liquid, foreign substance or corrosive
gas. Avoid places subject to shock or vibration.
6. 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.
7. Do not use the product in the environment with strong electromagnetic field, corrosive gas and
conductive substance.
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 input power source with large inductance, this may cause unstable operation of the power
supply.
Note: CE MARKING
CE Marking, when applied to a product covered by this manual indicates compliance with the Low Voltage, EMC
and the RoHS Directives.
