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DC-TB Rad 220

The document provides instructions for connecting a DC power supply to a unit using a 3-pin VDC-IN terminal block connector. It details the steps for preparing and connecting the terminal block plug, including wire stripping, securing connections, and ensuring proper voltage polarity. Additionally, it warns against reversing wire polarity and emphasizes the importance of grounding to prevent damage or hazards.

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Nguyen Duy Tien
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42 views1 page

DC-TB Rad 220

The document provides instructions for connecting a DC power supply to a unit using a 3-pin VDC-IN terminal block connector. It details the steps for preparing and connecting the terminal block plug, including wire stripping, securing connections, and ensuring proper voltage polarity. Additionally, it warns against reversing wire polarity and emphasizes the importance of grounding to prevent damage or hazards.

Uploaded by

Nguyen Duy Tien
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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DC Power Supply Connection – Terminal Block Connector

Note: Ignore this supplement if the unit is AC-powered.


Certain DC-powered units are equipped with a plastic 3-pin VDC-IN power input connector, located on the unit
rear panel. Supplied with such a unit, is a mating Terminal Block (TB) type connector plug for attaching to your
power supply cable.
Connect the wires of your power supply cable to the TB plug, according to the voltage polarity and assembly
instructions provided below.
DC Power Input Wire stripping
Connector 20 mm
Caution: Prepare all connections to the TB plug (on unit panel)
dimensions
before inserting it into the unit’s VDC-IN connector. 5 mm

Preparing and Connecting the TB Plug


Refer to Figure 1 for assistance. Terminal screws
1. Strip the insulation of your power supply
wires according to the dimensions shown.
2. Place each wire lead into the appropriate TB
plug terminal according to the voltage
polarity mapping shown in Figure 2. (If a Nylon cable tie
terminal is not already open, loosen its See Figure 2
screw). Afterwards, tighten close the three for mapping
terminal screws. Mating
TB Connector
3. Pull a nylon cable tie (supplied) around the Plug
DC power
cable
power supply cable to secure it firmly to the
TB plug grip
TB plug grip (pass the tie through the holes
on the grip). Figure 1

4. Isolate the exposed terminal screws/wire leads using a plastic


sleeve or insulating tape, to prevent the possibility of short-circuit. TB Connector
Plug
5. Connect the assembled power supply cable to the unit by
inserting the TB plug into the unit’s VDC-IN connector until it
snaps into place.
0 -48
or
DC Power Supply Wire Voltage Polarity (-24 )
Refer to Figure 2 for proper mapping of the power supply wire leads
Chassis (frame)
to the TB plug’s three terminals. Ground
+ -
Positive pole 24/48VDC Negative pole
Warning:
• Reversing the wire voltage polarity can cause damage to the unit! Figure 2
• Always connect a ground (earth) wire to the TB plug’s Chassis
(frame) Ground terminal. Connecting the unit without a protective
ground, or interruption of the grounding (for example, by using an
extension power cord without a grounding conductor) can cause
harm to the unit or to the equipment connected to it!

SUP-220-01/02

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