Moxa DA-681-I-DP-CE Manual de usuario descargar pdf (Pagina 24)

DA-681 Series Hardware User’s Manual Hardware Installation

For DC Power Input

The DA-681 series low voltage DC power supply features reverse polarity protection and dual

independent inputs. The dual power inputs allow the connection of two DC sources with the same

nominal voltage to provide redundant power supply inputs. The DC source must be connected to

the DC inputs according to the polarity markings on the unit.

ATTENTION

1. Equipment must be installed according to the applicable country wiring codes.

2. Surge Ground should be connected to Chassis Ground via a braided cable or other

appropriate ground wire.

3. Chassis Ground must be connected to the protection earth.

4. All line-to-ground transient energy is shunted to the Surge Ground terminal. In cases where

users require the DC inputs to be isolated from ground, remove the ground braid between

Surge and Chassis Ground. Note that all line-to-ground transient protection circuitry will be

disabled.

HIPOT (Dielectric Strength) Testing

Before performing the HIPOT test, you MUST have the jumpers removed and the braided ground

cable disconnected. This is required to prevent the transient/surge suppression circuitry, which is

connected to Surge Ground from being activated during the HIPOT test.

Remove Jumpers

(Green & Yellow)

Protection Earth

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Moxa DA-681-I-DP-CE Manual de usuario Pagina 24