Moxa Technologies RKS-G4028 Series User manual

P/N:1802040000041
*1802040000041*
RKS-G4028/
RKS-4028-L3 Series
Quick Installation Guide
Version 1.1, August 2022
Technical Support Contact Information
www.moxa.com/support

2022 Moxa Inc. All rights re served.

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Package Checklist
The Moxa RKS-G4028/RKS-G4028-L3 industrial rackmount switch is
shipped with the following items. If any of these items are missing or
dam aged, please contact your customer service representative for
assistance.
•RKS-G4028/RKS-G4028-L3 s witch
•4 protective caps for unused SFP po rts (only for RKS-G4028-GS
m odels)
•2 rackm ount ears
•8 round stickers for module screws
•Quick installation guide (printed)
•Warranty card
Panel Layouts
Front View
RKS-G4028-4GS Series
RKS-G4028-4GT Series
Rear View
1. System status LEDs
2. microSD card socket cover
3. Reset button
4. USB host (type A)
5. Console port (RS-232, RJ45)
6. Module 1
7. Module 2 socket
8. Module 3 socket
9. Module 4 socket
10.
Relay output
11.
EPS (external power supply)
inputs
12.
Power input 1 for 110/220
VDC/VAC
13.
Power input 2 for 110/220
VDC/VAC
14.
Model name
15.
Power input 1 for 24/48 VDC
16.
Power input 2 for 24/48 VDC
17.
Grounding connector screw
18.
System status LEDs
19.
Module 1 status LEDs
20.
Module 2 status LEDs
21.
Module 3 status LEDs
22. Module 4 status LEDs

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Dimensions
RM-G4000 Ethernet Interface Modules
4MSC2TX
4MST2TX
4SSC2TX
2MSC4TX
2MST4TX
2SSC4TX
6MSC 6MST

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6SSC
8PoE
8GPoE 8SFP
8GSFP
8TX
8GTX
WARNING
When end
users are using Optical SFP Communications
m odules, these must be lim ited to Laser Class 1.
WARNING
Use of the controls or adjustments or the performance of
procedures other than those specified herein may result in
hazardous radiation exposure.
Grounding the Moxa Industrial Rackmount Switch
Grounding and wire routing help lim it the e ffects 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 shie lded cable achieves better electromagnetic
compatibility.

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Connecting the Power Inputs
The RKS-G4028 Series switches support various types of power supply.
•LV m odels provide one 24/48 VDC power input
•2LV m odels provide two 24/28 VDC power inputs
•HV m odels provide one 110/220 VDC/VAC power input
•2HV models provide two 110/220 VDC/VAC power inputs
•PoE models provide 1 EPS (e xte rnal power supplies) with 48 VDC
power inputs
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
de vice m ay only be connected to the supply voltage shown on
the type plate. The device is designed for ope
ration 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 compliance with
IEC 62368-1/E N
62368-1/UL 62368-1 or UL 61010.
Power Terminal Blocks
The connection for EPS (external power supply) / PWR1 (po we r s upply
1) and PWR2 (po wer supply 2) are located on the fro nt panel as shown
be low.
PoE Models
HV Models
LV Models
PoE Models Power Terminal Blocks
1. Inse rt the negative/positive (-/+) DC wires into the te rminals.
2. Inse rt the terminal block connector prongs into the terminal block
receptor.
HV Models Power Terminal Blocks
1. Insert the line/neutral/ground (L/N/Gro und) AC/DC wire s into the
te rm inals .
2. Inse rt the terminal block connector prongs into the terminal block
receptor.

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LV Models Power Terminal Blocks
1. Inse rt the negative/positive (-/+) DC wires into the te rminals.
2. Inse rt the terminal block connector prongs into the terminal block
receptor.
NOTE
In orde r 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 conditio ns.
NOTE
When wiring the power input, we suggest using the cable type -
AWG (Am erican Wire Gauge) 16
-20 (1.31-0.519 mm2 ) and the
corresponding pin type cable te rminals. The rate d temperature
of wiring should be at least 105°C.
NOTE
When wiring the PoE power input, we suggest using the cable
type
- AWG (American Wire Gauge) 16 (1.31 mm2) and the
corresponding pin type cable te rminals. The rate d temperature
of wiring should be at least 105°C.
NOTE
When wiring the grounding connector screw, we
suggest using
the cable type
- AWG (American Wire Gauge) 16 (1.31 mm2)
and the corresponding pin type cable terminals. The rated
tem perature of wiring should be at least 105°C.
NOTE
Whe n HV m o dels are c onnected with an AC power source,
please make sure the Ground wire is well connected.
NOTE
When your purchase a device with two power modules, both
power units will be activated simultaneously, which will enable
powe r re dundancy.
NOTE
The reverse power input connection will not activate the device
or PoE input.
Wiring the Relay Contact
Each power module has one relay output that can be used to detect
user-c onfig ured e vents. Two wires are attached to the relay pins with
‘No rm ally Closed’ and ‘Normally Open’ options.
1. Inse rt the wires into the terminals.
2. Inse rt the terminal block connector prongs into the terminal block
receptor.

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FAULT:
The relay contact of the 2-pin terminal block connector is used to detect
user-configured events. The two wires attached to the fault contacts
form an open circuit when a user-configured event is triggered. If a
user-configured event does not occur, the fault circuit remains closed.
USB Connection
Use Moxa’s USB Automatic Backup Configurator ABC-02-
USB to connect to the USB host port to backup and restore
configuration files, auto
-load configuration file s, upgrade
firm ware, and backup system log files.
Type A
Console Port Connection
The RKS device has one RJ45 console port (RS-232), located on the
front panel. Use an RJ45-based cable to connect the RKS’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 RKS device t h at
has a baud rate of 115200. Refer to the following table figure for the
pin definition.
Pin
Description
1
–
2
–
3
–
4
TxD
5
RxD
6
GND
7
–
8
–
The Reset Button
Depress the Reset button for five continuous 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 m ore rapidly; this
indicate s that the button has been depressed for five seconds and you
can re le ase the Reset button to load factory default settings.
NOTE
Do NOT powe r off the switch when loading default settings
Placing the Round Stickers on Module Screws
Moxa offe rs e ig ht round s tickers in the s hipment package. These
stickers are to be placed on the screws of the modules to avoid
unauthorized persons accessing the modules. If the stickers are broken,
users will know the modules have been accessed by unauthorized
pe rsons. The figure below highlights the locations of the screws.

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Follow these steps to place the stickers.
1. Use a cloth to clean the surface of the screws with 75% alcohol
solution.
2. We suggest you use a tweezer to place the stickers.
3. Press the stickers d o wn with 15PSI (po und per square inc h) for at
least 15 seconds.
4. Keep the device at room temperature for 24 hours before
de ploying the devices in hars h environments.
NOTE
1. Place the stickers carefully as they are thin and fragile.
2.
The ideal environment for the stickers to be stored in is
22°C (72°F) and 50% relative humidity.
3.
Keep the extra two stickers in a safe place so that no
unauthorized persons can access them.
LED Indicators
The front/rear panels of the RKS-G4028 switch c ontains several LED
indicators. The function of each LED is described in the table below.
LED
Color
State
Description
System LEDs
P1
(PWR1) Amber
On Power is being supplied to the main
m odule’s power input PWR1.
Off
Power is not being supplie d to the main
m odule’s power input PWR1.
P2
(PWR2) Amber
On
Power is being supplied to the main
m odule’s power input PWR2.
Off
Power is not being supplie d to the main
m odule’s power input PWR2.
S
(STATE)
Green
On
The system passed the self-diagnosis
test on boot up and is ready to run.
Blinking
(1Hz)
1. System service initialization.
2. When pressing the reset button for
5 seconds to re set to fac to ry
de fault s e tt ing .
Blinking
(4Hz)
1. After pressing the re set b utton for 5
seconds and the system is
preparing to do a factory reset.
2. When the external storage ABC-02
automatic backup device is
connected to the switch.
Red On
The system has initially failed in the
boot-up process.
F
(FAULT) Red On
1. Network loop is detected when loop
protection is enabled.
2. The relay contact is triggered.
3. External storage Loading/Saving
has failed.
4. The port is being disabled be cause
it has exceeded the ingress rate
lim it of the shutdown mode.
5. Invalid Ring port connection.

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LED
Color
State
Description
Off
When the s ystem has successfully
booted up and no events have been
triggered.
M/H
(MSTR/
HEAD)
Green
On
The switch is set as the Master of the
Turbo Ring, or as the Head of the Turbo
Chain, or as the Root of the RSTP.
Blinking
1. The switch has become the Master
of the Turbo Ring after the Turbo
Ring has gone down.
2. The switch is set as the
Head of the
Turbo Chain and the Turbo Chain
has gone down.
3. The switch is set as the Turbo
Ring’s Member and the
corresponding Ring port is d o wn.
4. The switch is set as the Turbo
Chains' Mem ber/Tail and the
corresponding Head-
end Chain port
is down.
Off
When the switch is not the
Master/Head/Root of this Turbo
Ring/Turbo Chain/RSTP Ring.
C/T
(CPLR/
TAIL)
Green
On
1. The switch’s ring coupling or dual
ho m ing functio n is enabled.
2. The switch is set as the Tail of the
Turbo Chain.
Blinking
1. The switch is set as the Tail of
Turbo Chain and the Chain has
gone down.
2. The switch is set as Turbo Chain’s
Mem ber/Head and the
corresponding Tail-end Chain port
has gone d o wn.
Off
When the switch disables the coupling
or the Tail of Turbo Chain.
SYNC
Amber
On
The PTP function is enabled.
Blinking
The switch receives sync packets but
the time has not converged yet.
Green On The PTP function has successfully
converged.
EPS
(External
Power
Supply)
Am be r
On
Normal operation.
Off No external power supply for PoE.
M1 Copper
(10/100/
1000 Mbps,
4GT model
only)
Green
On
When the port is active and links at
1,000 Mbps.
Blinking
When the port’s data is being
transmitted at 1,000 Mbps.
Off
When the port is inactive or link down.
Amber
On
When the port is active and links at
10/100 Mbps.
Blinking
When the port’s data is being
transmitted at 10/100 Mbps.
Off
When the port is inactive or link down.

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LED
Color
State
Description
M1 SFP
(100/1000
Mbps, 4GS
model
only)
Green
On When the port is active and links at
1,000 Mbps.
Blinking
When the port’s data is being
transmitted at 1,000 Mbps.
Off
When the port is inactive or link down.
Amber
On
When the port is active and links at 100
Mbps.
Blinking When the port’s data is being
transmitted at 100 Mbps.
Off
When the port is inactive or link down.
LEDs for RM-G4000 Modules
RM-G4000-8GTX/8GSFP
LED
Color
State
Description
Copper
(10/100/
1000
Mbps)
Green
On The corresponding port’s 1000 Mbps
link is active.
Blinking
Data is being transmitted at 1000
Mbps.
Off
The corresponding port’s link is
inactive.
Amber
On The corresponding port’s 10/100 Mbps
link is active.
Blinking
Data is being transmitted at 10/100
Mbps.
Off
The corresponding port’s link is
inactive.
SFP
(100/1000
Mbps)
Green
On
The corresponding port’s 1000 Mbps
link is active.
Blinking
Data is being transmitted at 1000
Mbps.
Off
The corresponding port’s link is
inactive.
Amber
On
The corresponding port’s 100 Mbps link
is active.
Blinking
Data is being transmitted at 100 Mbps.
Off The corresponding port’s link is
inactive.

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RM-G4000-8TX/8SFP/6MSC/6MST/6SSC/4MSC2TX/4MST2TX/
4SSC2TX/2MSC4TX/2MST4TX/2SSC4TX
LED
Color
State
Description
Copper
(10/100
Mbps)
Green
On
The corresponding port’s 100 Mbps link is
active.
Blinking
Data is being transmitted at 100 Mbps.
Off
The corresponding port’s link is inactive.
Amber
On
The corresponding port’s 10 Mbps link is
active.
Blinking
Data is being transmitted at 10 Mbps.
Off
The corresponding port’s link is inactive.
Fiber
(10/100
Mbps)
Green
On
The corresponding port’s 100 Mbps link is
active.
Blinking
Data is being transmitted at 100 Mbps.
Off
The corresponding port’s link is inactive.
Amber
On The corresponding port’s 10 Mbps link is
active.
Blinking
Data is being transmitted at 10 Mbps.
Off
The corresponding port’s link is inactive.
RM-G4000-8GPoE
LED
Color
State
Description
Copper
(10/100/
1000
Mbps)
Green
On
The corresponding port’s 1000 Mbps link
is active.
Blinking
Data is being transmitted at 1000 Mbps.
Off
The corresponding port’s link is inactive.
Amber
On
The corresponding port’s 10/100 Mbps
link is active.
Blinking
Data is being transmitted at 10/100
Mbps.
Off
The corresponding port’s link is inactive.
PoE/
PoE+/
PoE++
Green
On
When the port is connected to an IEEE
802.3bt powered device (PD).
Off
1. Power is not being supplied to a
powered device (PD).
2. The port is not connected to an IEEE
802.3bt/at/af standard powered
device (PD).
Am be r
On When the port is connected to an IEEE
802.3af/at powered device (PD).
Blinking
PoE power has been shut off because
powe r budget is low.
Off
1. Power is not being supplied to a
powered device (PD).
2. The port is not connected to an IEEE
802.3bt/at/af standard powered
device (PD).

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RM-G4000-8PoE
LED
Color
State
Description
Copper
(10/100/
1000
Mbps)
Green
On
The corresponding port’s 100 Mbps link
is active.
Blinking
Data is being transmitted at 100 Mbps.
Off
The corresponding port’s link is
inactive.
Amber
On
The corresponding port’s 10 Mbps link
is active.
Blinking
Data is being transmitted at 10 Mbps.
Off
The corresponding port’s link is
inactive.
PoE/
PoE+/
PoE++
Green
On
When the port is connected to an IEEE
802.3bt powered device (PD).
Off
1. Power is not being supplied to a
powered device (PD).
2. The port is not connected to an
IEEE 802.3bt/at/af standard
powered device (PD).
Am be r
On
When the port is connected to an IEEE
802.3af/at powered device (PD).
Blinking
PoE power has been shut off because
powe r budget is low.
Off
1. Power is not being supplied to a
powered device (PD).
2. The port is not connected to an
IEEE 802.3bt/at/af standard
powered device (PD).
Specifications
Input/Output Interface
Alarm Contact
Channels
1 relay output with current carrying capacity of 2 A
@ 24 VDC
Ethernet Interface
10/100/1000BaseT
(X) Po rts (RJ45
connector)
RKS-G4028-4GT Models: 4
RKS-G4028-L3-4GT Models: 4
100/1000BaseSFP)
RKS-G4028-4GS Models: 4
RKS-G4028-L3-4GS Models: 4
RKS-G4028-PoE-4GS Models: 4
RKS-G4028-L3-PoE-4GS Models: 4
Modules
There are 3 m o dule s lo ts o n the s witch. Us ers c an
select different types of m odules to insert into the
switch. The modules that can be selected include 8-
port/6-port modules with 10/100/1000BaseT(X),
10/100BaseT(X), 100/1000BaseSFP, or 100BaseFX
(SC/ST connector) interfaces.

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Standards
IEEE 802.1D-2004 for Spanning Tre e Protocol
IEEE 802.1p for Class of Service
IEEE 802.1Q for VLAN Tagging
IEEE 802.1s for Multiple Spanning Tree Protocol
IEEE 802.1w for Rapid Spanning Tree Protocol
IEEE 802.1X for Authentication
IEEE 802.3 for 10BaseT
IEEE 802.3ab for 1000BaseT(X)
IEEE 802.3ad for Port Trunk with LACP
IEEE 802.3u for 100BaseT(X) and 100BaseFX
IEEE 802.3x for flow control
IEEE 802.3z for 1000BaseSX/LX/LHX/ZX
IEEE 802.3bt for Power over Ethernet
PoE Information
Total PoE Power
Budget
300 W
PoE Output Power For each PoE port: 15.4 W in IEEE 802.3af, 30
W in
IEEE 802.3at*, 90 W in IEEE 802.3bt
*The power consumption tested for UL ce rtification.
Power Parameters
Input Voltage
RKS-G4028-LV Models: 24/48 VDC
RKS-G4028-2LV Models: 24/48 VDC (redundant
dual inputs)
RKS-G4028-HV Models: 110/220 VAC, 110/220
VDC
RKS-G4028-2HV Models: 110/220 VAC, 110/220
VDC (redundant dual inputs)
PoE Models: 48 VDC (for PoE system)
Operating Voltage
RKS-G4028-LV Models: 18 to 72 VDC
RKS-G4028-2LV Models: 18 to 72 VDC
RKS-G4028-HV Models: 85 to 264 VAC, 88 to 300
VDC
RKS-G4028-
2HV Models: 85 to 264 VAC, 88 to 300
VDC
PoE Models: 46 to 57 VDC (for PoE system)
Overload Current
Protection
Supported
Reverse Polarity
Protection
Supported
Input Current RKS-G4028-LV/2LV models:
•Max. 2.53 A @ 24 VDC
•Max. 1.25 A @ 48 VDC
RKS-G4028-HV/2HV models:
•Max. 0.55 A @ 110 VDC
•Max. 0.29 A @ 220 VDC
•Max. 1.01 A @ 110 VAC
•Max. 0.62 A @ 220 VAC
EPS (only for PoE model):
•Max. 7.50 A @ 48 VDC
Physical Characteristics
IP Rating
IP30
Dim ensions
440 x 44 x 300 mm (17.32 x 1.73 x 11.81 in)

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Weight
RKS-G4028-LV/HV Models: 4,900 g
RKS-G4028-2LV/2HV Mo dels: 5,200 g
RKS-G4028-PoE-LV/HV Mo dels: 5,000 g
RKS-G4028-PoE-2LV/2HV Mo dels: 5,300 g
RM-G4000-8TX: 300 g
RM-G4000-8SFP: 400 g
RM-G4000-8GTX: 300 g
RM-G4000-8GSFP: 400 g
RM-G4000-6MSC: 400 g
RM-G4000-6MST: 400 g
RM-G4000-6SSC: 400 g
RM-G4000-4MSC2TX: 400 g
RM-G4000-4MST2TX: 400 g
RM-G4000-4SSC2TX: 400 g
RM-G4000-2MSC4TX: 400 g
RM-G4000-2MST4TX: 400 g
RM-G4000-2SSC4TX: 400 g
RM-G4000-8PoE: 500 g
RM-G4000-8GPoE: 500 g
Installation
Rack mounting
Environmental Limits
Operating
Tem perature
-40 to 75°C (-40 to 167°F)
Storage
Tem perature
(package included)
-40 to 85°C (-40 to 185°F)
Am bie nt Re lative
Hum idity
5 to 95% (non-condensing)
Standards and Certifications
Safety
EN 62368-1, UL 62368-1, UL 61010
EMC
EN 55032/35
EMI
CISPR 32, FCC Part 15B Class A
EMS
IEC 61000-4-2 ESD: Contact: 8 kV; Air: 15 kV
IEC 61000-4-3 RS: 80 MHz to 1 GHz: 35 V/m
IEC 61000-4-4 EFT: Power: 4 kV; Signal: 4 kV
IEC 61000-4-5 Surge: Power: 4 kV; Signal: 4 kV
IEC 61000-4-6 CS: 10 V
IEC 61000-4-8 PFMF
IEC 61000-4-11 DIPs
Power Substation
IEC 61850-3, IEEE 1613
Railway
EN 50121-4
Freefall
IEC 60068-2-32
Shock
IEC 60068-2-27
Vibration
IEC 60068-2-6
Warranty
Warranty Period
5 years
Details
See www.moxa.com/warranty

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Rack Mounting Instructions
1. Elevated Operating Ambient: If installed in a closed or multi-
unit rack assembly, the operating ambient temperature of the rack
environment may be greater than room ambient. Therefore,
consideration should be given to installing the e quipment in an
environment compatible with the maximum ambient temperature
(Tm a) s pe cified by the manufacturer.
NOTE
In order to ensure reliable operations, please make sure the
operating temp. of the environment does not exceed the spec.
When mounting a
n RKS-G4028 rack-mounted
switch with other
operati
ng units in a cabinet without forced ventilation, it is
recommended that 1U of space is reserved between each rack
-
m ounted switch and/or device.
2. Reduced 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: Reliable grounding of rac k-mounted
equipment should be m aintained. Partic ular atte ntion s hould be
given to supply connections other than direct connections to the
branch circuit (e.g. use of power strips). Make sure the grounding
screw of the device has been connected by a 16 AWG (m in.)
green-and-yellow wire to the rack, and the protective terminal of
the rack has co nnected to the e arth gro und.

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ATTENTION
When installing the device onto a rack, make sure that the
input terminal block and protective terminal do not connect, or
it m ay c aus e an electric shock.
NOTE
The rackm ount ears can be equipped on the front or rear of
Moxa RKS-G4028/RKS-G4028-L3 switch.
Restricted Access Locations
•
This e quipment is intended to be used in Restricted
Access Locations, such as a computer room, with
acce ss lim ited to SERVICE PERSONAL o r USERS who
have been instructed on how to handle the metal
chassis of
equipment that is so hot that special protection may be needed
be fore touching it. The location should only be accessible with a key
or through a s e curity identity system.
•External m etal parts of this equipment are extremely hot!! Before
touching the equipment, you must take special precautions to
protect your hands and body from serious injury.
Patent
https://www.moxa.com/doc/operations/Moxa_Patent_Marking.pdf
ATTENTION
1.
To protect against the risk of fire, only re place the fuse
w ith
one that has the same type and rating.
2.
It is recommended to incorporate a readily accessible
disconnect device into the building installation wiring.
Importantly, ensure the power supply is dis c onnected
be fore performing any m aintenance.
3.
This equipment is designed to connect the earthed
conductor of the D.C supply circuit to the equipment’s’
earthing conductor.
4.
It is recommended to keep the PoE network indoors when
using Information Technology Equipment.