Circuit-test PDC-6218 User manual

OPERATION
MANUAL
CIRCUIT-TEST
DC - DC Converter
PDC-6218
13.2VDC @ 18A

Keep this manual in a safe place for quick reference at all times.
This manual contains important safety and operation instructions for correct use of the
DC Converter. Read through the manual and pay special attention to the markings and labels
of this unit and equipment to be connected.
Pay special attention to these two types of notices used in this manual
WARNING: Failure to observe this warning may cause injury to persons and
damage to the DC converter or connected equipment.
CAUTION: Failure to observe this warning may result in damage to equipment
and improper functioning of the DC Converter.
Caution
1. Do not use the unit for equipment which requires current input higher than the maximum
specified value.
2. Do not use the unit for lamps or motorized equipment that requires high starting surge
current.
3. Do not connect input voltage outside the specified input voltage range of 18 to 38VDC.
4. Never turn ON the unit when the load is set at full load even if the load current is within
the range.
5. Always place the unit in well ventilated area as high heat is generated.
6. Never install the unit near heat sensitive material as the casing of unit can get as high
as 60°C (140°F).
7. Never apply a voltage source higher than 13.2V without a proper diode to the output,
otherwise unit may be damaged.
8. Although the unit has very low standby current, it is advisable to disconnect the DC
input if the unit is not to be used.
Introduction
PDC-6218 DC converter offers regulated 13.2V DC power from 20-30VDC sources. It
implements switching mode technology to generate less heat yet higher efficiency. Its
advanced design and sturdy construction assures continue stability and reliability.
Features
1. Overload Protection: When the output current reaches the maximum limit, the overload
circuitry is activated and the output voltage and current are reduced to protect the unit.
2. Over Voltage Protection: When the output voltage reaches the maximum limit, the over
voltage protection is activated and the output voltage shuts down. Protection is
maintained even though output load is removed. The unit can be reset by disconnecting
input for about 5-10 seconds.
3. High RFI Stability: The unit is designed with high protection circuitry against Radio
Frequency interference.
4. Operation and Fault status LED indicators.
5. Versatile clip-on mounting bracket for quick installation.

Control Panel And Indicators
1 STATUS INDICATOR: GREEN LED indicates unit in Operation.
2 FAULT INDICATOR: RED LED lights indicating overload or short circuit.
3 INPUT TERMINALS
4 OUTPUT TERMINALS
Specifications
Input Voltage Range
18VDC to 38VDC
Output Voltage
13.2VDC
Continuous Output Current
18A
Maximum Output Current at 30% Duty
Cycle
20A
No Load Current
<100mA
Ripple & Noise ( P-P )
<300mV
Ripple & Noise ( RMS )
<25mV
Load Regulation
<100mV
Line Regulation
<50mV
Efficiency
>90%
Protections
OVP (Output Over Voltage Protection),
Reverse Polarity, Overload, Short Circuit,
Overvoltage Protection
Indicators
Green LED-OPERATE and
Red LED-FAULT
Input and Output Connection type
Quick-Connect Terminals
Cooling System
Natural Convection
Max. Operating Temperature
50°C
Dimension ( WxHxD )
162x75x32mm
Weight
365g
Accessory
Mounting Bracket, Quick-connect crimp
connectors, Screws

Installation and Operation
1. Mount the clip-on mounting bracket with included machine screws and clip the unit onto
the mounting bracket. Make sure it is pushed all the way in to the bracket.
Note: It is recommended to mount the unit horizontally.
2. Crimp the input and output cables with the included quick-connect crimp connectors.
Use different colored cables for clear identification of the inputs, outputs & polarities.
Note: Recommended wire gauge size is at least 12 AWG.
3. Connect the input cable to input terminals watching the polarity carefully. The green
LED should light up.
4. Turn OFF the output equipment and then make the connection to the output terminals
making sure of the correct polarity.
5. Turn ON the equipment to be powered.
Trouble Shooting
1. None of the indicator LED is ON.
Check input source for open circuit and loss of earth. Remove the load to check if green
LED is ON. If green LED is still not ON, check if input voltage level is within the range,
check if polarity is correct, and check if battery level is normal. Unit will return to working
condition once the fault has been corrected or removed.
2. Red LED is ON.
Remove the load to check if green LED is ON. If green LED is ON, the unit may be in
overload or short circuit protection. Check the power requirement and the condition of
the connected equipment which triggers the red LED. Loads like high power
halogen/quartz lamps, motorized equipment that requires high surge starting current
(which is many times over its rated current) will trigger the protection of the unit. They
are not suitable for use with the unit.
PDC-6218 08R14
CIRCUIT-TEST
ELECTRONICS
A Division of R.P. Electronic Components Ltd.
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