Moxa Technologies PT-G7728 User manual

P/N: 1802077280416

*1802077280416*

PT-G7728/G7828 Series

Quick Installation Guide

Version 2.1, October 2023

Technical Support Contact Information

www.moxa.com/support



- 2 -

Package Checklist

Moxa’s PT-G7728/G7828 industrial rackmount switch is shipped with

the following items. If any of these items are missing or damaged,

please contact your customer service representative for assistance.

•1 PT-G7728 or G7828 switch

•2 protective caps for unused ports, 3 protective caps for unused

USB ports

•2 rackmount ears

•Quick installation guide (printed)

•Substance Disclosure Table

•Product Certificate of Quality Inspection (Simplified Chinese)

•Product Notices (Simplified Chinese)

•Warranty card

NOTE

You can find information and software downloads on the

relevant product pages located on Moxa’s website:

www.moxa.com/

Default Settings

•Default IP address: 192.168.127.253

•Default Subnet Mask: 255.255.255.0

•Default Usernames: admin, user

•Default Password: moxa

Panel Layouts

Front Panel

1. System status LEDs (from left to right):

STATE LED indicator, MSTR/HEAD LED indicator, FAULT LED

indicator, CPLR/Tail LED indicator, SYNC LED indicator

2. 2 x 100/1000Base SFP ports

3. 2 x 10/100/1000BaseT(X) ports

4. 100/1000Base SFP port status LEDs

5. 10/100/1000BaseT(X) port status LEDs

6. Ethernet module slot 1

7. Ethernet module slot 2

8. Ethernet module slot 3

9. Ethernet module slot 4

10. Ethernet module slot 5

11. Ethernet module slot 6

12. Power module slot 1

13. Power module slot 2

14. Grounding screw

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Rear Panel

1. Console port (RJ45, RS-232)

2. USB storage port

3. System LED indicators

4. Module and port LED indicators

5. Reset button

Dimensions

Unit: mm (inches)

Ethernet Modules

LM-7000H-4GTX

LM-7000H-4TX

LM-7000H-4GSFP

LM-7000H-4GPoE

LM-7000H-4PoE

LM-7000H-2GPHR

- 4 -

NOTE

The LM-7000H-2GPHR module enables the device to interact

with a redundancy network using

the High-

Availability Seamless

Redundancy (HSR) and Parallel Redundancy (PRP) protocols. To

use this module, the PT

-G7728 switch must have Firmware

V6.2 or higher.

NOTE

The LM

-7000H-2GPHR module is only supported in slot

5 of the

PT-G7728 Series.

Power Modules

PWR-HV-P48

PWR-LV-P48

PWR-HV-NP

PWR-LV-NP

Rack Mounting Instructions

1. Elevated Operating Temperature:If installed in a closed or

multi-unit rack assembly, the operating ambient temperature of

the rack environment may be greater than room temperature.

Therefore, consideration should be given to installing the

equipment in an environment compatible with the maximum

ambient temperature (Tma) specified by the manufacturer.

NOTE

To ensure reliable operations, please make sure the operation

temperature of the environment does not exceed the spec.

When mounting a rack

-mounted switch with other operating

units in a cabinet without forced ventilation, it is recommended

that 1U of space

is reserved between each rack-

mounted switch

and/or device. It is the responsibility of the user to ensure that

the equipment is installed, operated

, and used for its intended

function in the manner specified by Moxa.

2. Required Air Flow: Installation of the equipment in a rack should

be such that the amount of air flow required for safe operation of

the equipment is not compromised.

3. Mechanical Loading: Mounting of the equipment in the rack

should be such that a hazardous condition is not achieved due to

uneven mechanical loading.

4. Circuit Overloading: Consideration should be given to the

connection of the equipment to the supply circuit and the effect

that overloading of the circuits might have on overcurrent

protection and supply wiring. Appropriate consideration of

equipment nameplate ratings should be used when addressing this

concern.

5. Reliable Grounding: Rack-mounted equipment should be reliably

grounded and should not be removed when the equipment is

energized. We suggest using a conductor that is 0.75 mm2or 18

- 5 -

AWG and the thread diameter should be at least 3.5 mm.

Particular attention should be given to supply connections other

than direct connections to the branch circuit (e.g., use of power

strips).

NOTE

The rackmount ears can be installed on the front or rear of the

PT-G7728/G7828 switch.

ATTENTION

Safety First

Be sure to disconnect the power cord before installing and/or

wiring your Ethernet Switch. Calculate the maximum possible

current in each power wire and common wire. Observe all

electrical codes

dictating the maximum current allowable for

each wire size. If the current goes above the maximum ratings,

the wiring could overheat,

which can cause serious damage to

your equipment.

WARNING

This is a Class 1

laser/LED product. Do not stare directly into

the laser beam.

Connecting the Power Inputs

The PT-G7728/PT-G7828 switches support 4 types of power supply:

•PWR-HV-P48: one 110/220 VAC/VDC (90 to 264 VAC, 88 to 300

VDC), one 48VDC PoE power input for PoE+ ports.

•PWR-LV-P48: one 24/48 VDC (18 to 72 VDC), one 48 VDC PoE

power input for PoE+ ports.

•PWR-HV-NP: one 110/220 VAC/VDC (90 to 264 VAC, 88 to 300

VDC).

•PWR-LV-NP: one 24/48 VDC (18 to 72 VDC).

For the PWR-HV-P48, the 110/220 VAC/VDC power supplies provide

power to the switch. Separate 48 VDC power supplies are required to

provide power to 12 PoE+ ports (50 to 57 VDC is recommended for

IEEE 802.3at devices).

For the PWR-LV-P48 models, the 24/48 VDC power supplies provide

power to the switch. Separate 48 VDC power supplies are required to

provide power to 12 PoE+ ports (50 to 57 VDC is recommended for

IEEE 802.3at devices).

To provide power to 24 PoE+ ports, two power modules should be

used.

For the PWR-HV-NP, the 110/220 VAC/VDC power supplies provide

power to the switch.

For the PWR-LV-NP, the 24/48 VDC power supplies provide power to

the switch.

- 6 -

Wiring Requirements

WARNING

Do not disconnect modules or wires unless power has been

switched off or the area is known to be non

-hazardous. The

device may only be connected to the supply voltage

printed

next to the power input

. The device is designed for operation

with a Safety Extra

-Low Voltage (SELV) or an isolated power

supply, which means that they may only be connected to the

supply voltage connections and to the signal contact with a

SELV or an isolated power supply in co

mpliance with IEC

60950-1.

Power Terminal Blocks

The connection for power input and PoE external power supply is on the

power modules.

PWR-HV-P48/PWR-HV-NP

STEP 1: Insert the neutral/line (L/N/Ground) AC wires into the

terminals.

STEP 2: Insert the terminal block connector into the terminal block

receptor.

PWR-LV-P48/PWR-LV-NP

STEP 1: Insert the negative/positive (-/+) DC wires into the terminals.

STEP 2: Insert the terminal block connector prongs into the terminal

block receptor.

PoE Power Terminal Blocks

STEP 1: Insert the negative/positive DC wires into the -/+ terminals,

respectively.

STEP 2: Insert the terminal block connector prongs into the terminal

block receptor.

NOTE

To have higher levels of protection against surge, it is

suggested to install a surge protector in front of the power

input

of the PoE powered device so that it is suitable for use in

IEC 61850 conditions.

NOTE

To activate the redundant load sharing mode, install two power

modules on the PT

-G7728/G7828 Series and ensure they are

both active.

- 7 -

NOTE

The reverse power input connection will not activate the device

or PoE input. In addition, the PoE will only

activate when the

system power input is installed on the same power unit.

Wiring the Relay Contact

Each power module has one relay output that can provide two types of

relay output. Refer to the table below for detailed information.

The relay contact is used to detect user-configured events. Two wires

are attached to the relay pins with normally close and normally open

options.

FAULT:

The relay contact of the 3-pin terminal block connector is used to detect

user-configured events. The module provides normally open and

normally closed circuits depending on what the user chooses. For pin

definitions refer to the table below.

Relay connection

Power on state

Event trigger

NO and COM

Closed circuit

Open circuit

NC and COM

Open circuit

Closed circuit

NOTE

When wiring the relay contact, we suggest using the cable type

AWG (American Wire Gauge) 16-24 (1.31-0.205 mm2) and

the corresponding pin type cable terminals. The connector must

be able to withstand torque at maximum 5

pound-inches. The

rated temperature of wiring should be at least 105°C.

Install/Remove the Ethernet Module

The Ethernet modules are hot-swappable. You have the option to

mount or remove the Ethernet module while the device is operating.

The installation procedure is as follows:

1. Insert the Ethernet module straight into the slot.

2. Fasten the module to the device by tightening the 2 screws.

Use a torque of 3.5 kgf-cm (0.35 Nm).

The removal procedure is as follows:

1. Loosen the 2 screws of the module.

2. Pull the module out of the slot.

3. Insert the dummy module into the slot to have better protection

against dust and EMI.

4. Fasten the dummy module using 2 screws. The tightening torque

is 4 kgf-cm (0.40 Nm)

Install/Remove the Power Module

The power supply units are hot-swappable. You have the option to

mount or remove the power supply units while the device is operating.

The installation procedure is as follows:

1. Insert the power unit straight into the slot.

2. Fasten the unit to the device by tightening the 2 screws. The

tightening torque is 3.5 kgf-cm (0.35 Nm)

- 8 -

The removal procedure is as follows:

1. Loosen the 2 screws of the module.

2. Pull the module out of the slot.

3. Insert the dummy module into the slot to have better protection

against dust and EMI.

4. Fasten the dummy module using 2 screws. The tightening torque

is 4 kgf-cm (0.40 Nm)

NOTE

If one of the modules is removed from the device, it is

advisable to insert a dummy module

to provide better

protection against dust and EMI.

Grounding the Moxa Industrial Rackmount Switch

Grounding and wire routing help limit the effects of noise due to

electromagnetic interference (EMI). Run the ground connection from

the ground screw to the grounding surface prior to connecting devices.

NOTE

Using a shielded cable achieves better electromagnetic

resistance.

Console Port Connection

The PT-G7728/G7828 device has one RJ45 console port (RS-232)

located on the front panel. Use a RJ45-to-DB9 cable (see the cable

wiring diagram below) to connect the PT-G7728/G7828’s console port

to your PC’s COM port. You may then use a console terminal program,

such as Moxa PComm Terminal Emulator, to access the console

configuration utility of the PT-G7728/G7828.

J45 Console Port Pinouts

Description

DSR

RTS

–

TxD

RxD

GND

CTS

DTR

USB Storage Connection

The USB storage port is on the rear panel of the PT-G7728/G7828

switch. (Type A connector; see the diagram below for pinout

assignments). Use Moxa’s ABC-02-USB automatic backup configurator

to connect to the PT-G7728/G7828 USB storage port to perform

configuration backup, firmware upgrade, or system log file backup.

Description

VCC (+5V)

D- (Data-)

D+ (Data+)

GND (Ground)

- 9 -

The Reset Button

The reset button can perform two functions. One is to reset the PT-

G7728/G7828 switch back to factory default settings and the other is to

perform a quick back up of configuration and log files to the ABC-02-

USB automatic backup configurator.

Reset to Factory Default Settings

Depress the Reset button for five seconds to load the factory default

settings. Use a pointed object, such as a straightened paper clip or

toothpick, to depress the Reset button. When you do so, the STATE LED

will start to blink about once per second. Continue to depress the

STATE LED until it begins blinking more rapidly; this indicates that the

button has been depressed for five seconds and you can release the

Reset button to load factory default settings.

NOTE

DO NOT power off the switch when loading default settings.

Configuration and Log Files Back Up

When the ABC-02-USB is connected to the PT-G7728/G7828 switch, the

reset button allows for a quick back up of configuration and event logs

to the ABC-02-USB. Press the reset button to start backing up the

current system configuration files and event logs to the ABC-02-USB.

NOTE

When the ABC-02 is plugged in, you cannot reset to factory

default by pressing the reset button.

LED Indicators

The front panel of the PT-G7728/G7828 switch contains multiple LED

indicators. The function of each LED is described in the table below:

LED

Color

State

Description

System LEDs

STATE

Green

On System has passed self-diagnosis test on

boot-up and is ready to run

Blinking

1. When the reset button is pressed for 5

seconds, the LED will blink continuously (1

time/s) until the device is reset to the

factory default.

2. When an ABC-02 automatic backup device

is detected, the LED will blink slowly (1

time/2s).

Red On

System failed self-diagnosis on boot up.

•Switch Initiate fail.

•Fail Firmware Checksum Fail/

Uncompressed Fail

FAULT

Red On

One of the following has happened:

1. ABC Loading/Saving Failure.

2. The port has been disabled because the

ingress multicast and broadcast packets

exceed the ingress rate limit.

3. Incorrect loop connection in a single switch

4. The Ring port connection is not valid.

- 10 -

LED

Color

State

Description

Off

System is in normal operation

SYNC Amber

PTP function is enabled

Blinking

The device is starting to receive the sync

packet

Green

The PTP function has successfully converged

MSTR/

HEAD Green

1. This switch is set as the Master of the

Turbo Ring, or as the Head of the Turbo

Chain.

2. POST H.W. Fail (+State on and Fault

blinking)

Blinking

1. The switch has become the Ring Master of

the Turbo Ring.

2. Head of the Turbo Chain, after the Turbo

Ring or the Turbo Chain went down.

3. The switch is set as Turbo Chain’s Member

and the corresponding chain port is down.

Off

1. The switch is not the Master of this Turbo

Ring.

2. T

he switch is set as a Member of the Turbo

Chain.

CPLR/

TAIL Green

1. The switch coupling function is enabled to

form a backup path.

2. It is set as the Tail of the Turbo Chain.

3. POST S.W. Fail (+State on and Fault

blinking)

Blinking

1. Turbo Chain is down.

2. The switch is set as Turbo Chain’s Member

and the corresponding chain port is down.

Off 1. This switch disabled the coupling function.

2. Set as a Member of the Turbo Chain.

When the system is importing/exporting data from or to an ABC-02-

USB automatic backup device, the FAULT, MSTR/HEAD, and CPLR/TAIL

LEDs will blink in sequence.

Port Status LEDs

Ports

1 to 4

Green

On Port's 1000 Mbps link is active.

PoE port is connected to PoE device.

Blinking

Data is transmitting at 1000 Mbps.

PoE port is connected to PoE device.

Amber

Port's 10/100 Mbps link is active.

PoE port is connected to PoE device.

Blinking

Data is transmitting at 10/100 Mbps.

PoE port is connected to PoE device.

Red On

PoE power failure:

•Once per second: PoE detection failure

•Twice per second: short-circuit,

overloading, or outside operating

temperature range

Off

Port’s link is inactive

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