Moxa DA-685-LX [15/40] Power input wiring description

DA-685 Series Hardware Hardware Installation

2-7

Power Input Wiring Description

Read the following section for a detailed power input wiring description.

Terminal Number Description Note

1 PWR1 Line

PWR1 Line

+ is connected, or to the Line terminal

for the AC power source.

2 PWR1 Neutral

PWR1 Neutral – is connected to the Neutral

terminal for the AC power source.

3 PWR1 Surge Ground

PWR1 Surge Ground is connected to the Chassis

Ground via a jumper on the terminal block. Surge

Ground is used as the ground conductor for all

surge and transient suppression circuitry. NOTE:

Surge Ground must be disconnected from Chassis

Ground during HIPOT (dielectric strength) testing.

4 Chassis Ground

Chassis Ground is connected to the Safety

Ground terminal for AC inputs, chassis ground

connects to both power supply surge grounds via a

removable jumper.

For AC Power Input

1. PWR1 Line should be connected to AC (Line).

2. PWR1 Neutral should be connected to AC (Neutral).

3. Surge Ground is connected to the Chassis Ground via a braided cable or other appropriate grounding wire.

Surge Ground is used as the ground conductor for all surge and transient suppression circuitry internal to

the protection board.

4. Chassis Ground should be connected to the AC Ground terminal.

ATTENTION

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

2. Surge Ground MUST be disconnected from the Chassis Ground during HIPOT (dielectric strength)

testing.

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

require the inputs to be isolated from the 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.