Manson Engineering Industrial DD105, DD107 Operating Instruction

DC – DC CONVERTER

DD105
DD107

OPERATING INSTRUCTION

■ SAFETY PRECAUTIONS

GENERAL

1) Please read through this operating instruction care-

fully and follow the instruction to prevent from abuse
or misuse. This instruction must be kept to refer
anytime in need.

2) The DD-105 and the DD107 are specially designed

DC-DC converter to use DC13.8V operated radio
equipment sourcing from DC24V outlet providing 5A
continuous operation (DD105) or 7A continuous
operation (DD107).
Note : Continuous operation to be 8(eight) hours
under 24V input at 25°C.
NO RESPONSIBILITY is extended to other than
above applications and/or use.

3) Over Voltage Protection

When DC16V ±0.5V is appeared at the output
terminal, the input voltage will be automatically shut
down to protect the unit.

4) Over Current Protection

When the output current comes over the limitation,
the output voltage and current will be automatically
reduced to protect the unit.

■ CAUTION

1) DO NOT use for equipments require higher current

input than the designed value otherwise it may
damage the unit.

2) DO NOT use this unit for charging battery.

3) DO NOT use for lamps or motorized equipment

which require high current input at starting as it may
damage the unit.

4) DO NOT replace the fuse before ceasing problems

and the assigned value of fuse must be taken in
place.

5) DO NOT feed input voltage other than DC20V –

DC30V as it may damage the unit. The input
voltages specified here are for the purpose of
operationble application only.

6) DO NOT start unit while the radio is being

transmitted as it may damage the unit.

7) NEVER touch the heatsink panel during the unit is

powered. Touching it may burn your hands or part of
your body by high temperature.

8) NO DC24V output can come out from the input

when feeding DC12V to the output.

9) BE SURE wiring connections otherwise it may

damage the unit. While cable is for INPUT(+) and
Black cable is for INPUT(-). Red cable is for
OUTPUT(+) and Black cable is for OUTPUT(-).

■ CONTROLS AND FUNCTIONS

(1) POWER SWITCH

Turning ON, the indicator lights up.

(2) OPERATE LED

Light-up when unit is operate.

(3) INPUT CABLES

White is for (+) positive and Black is for (-) negative
directly from the battery.

(4) OUTPUT CABLES

Red is for (+) positive and Black is for (-) negative.

■ CONNECTION AND OPERATION

1) Turn OFF the unit.

2) Connect the input white cable to (+) and the input

Black cable to (-) of 24V battery firmly.

3) Turn OFF the equipments and connect Red (+)

output cable of the unit to the positive polarity input
of the equipment to be powered.

4) Connect Black (-) output cable of the unit to the

negative polarity input of the equipment to be
powered.

5) Turning ON the unit, LED lights up yellow, then turn

ON the equipment to be powered.

6) When an operation is over, turn OFF the equipment

being powered first. Then trun OFF the unit.

■ SPECIFICATIONS

■ FEATURES

1) Overload Protection

Over Voltage Protection and Over Current
Protection circuitry are adopted to prevent from
overload.
Note : When the protection circuit works, disconnect
the equipment. Keeping the may damage the unit or
even may hurt you.

2) High RFI Stability

Designed for high protection circuitry against RFI
( Radio Frequency Interference ) provided you a
stable operation. These units comply CE EMC
Directive 89/336/EEC.

7673-0105-0000

DD105 DD107

INPUT VOLTAGE

DC 20V - DC30V

OUTPUT VOLTAGE

DC13.8V ±0.5V

O.V.P. SETTING

DC16V ±0.5V

OUTPUT CURRENT

( CONTINUOUS )

5A FOR 8 HOURS UNDER

DC24V INPUT AT 25°C

7A FOR 8 HOURS UNDER

DC24V INPUT AT 25°C

CURRENT LIMITING

6 ±0.5A 9 ±0.5A

STANDBY CURRENT

70mA at no loading

FUSE

7A 10A

COOLING SYSTEM

Air Convection

DIMENSIONS

125(W) x 45(H) x 100(D) 125(W) x 45(H) x 120(D)

WEIGHT

0.55kg 0.62kg

* Specifications are subjust to change with piror notice.