Introduction 28G-port (with 802.3bt PoE option) full Gigabit modular managed Ethernet switches The RKS-G4028 Series is designed to meet the rigorous demands of mission-critical applications for industry and business, such as power substation automation systems (IEC 61850-3, IEEE 1613), railway applications (EN 50121-4), and factory automation systems. The RKS-G4028 Series’ Gigabit and Fast Ethernet backbone, redundant ring, and 24 VDC, 48 VDC, or 110/220 VDC/VAC dual isolated redundant power supplies increase the reliability of your communications and save on wiring costs. The modular design of the RKS-G4028 Series also makes network planning easy, and allows greater flexibility by letting you install up to 28 Gigabit ports with various connector types.Additional Features and Benefits Layer 3 switching functionality to move data and information across networks (L3 models only)
IEEE 1588v2 PTP (Precision Time Protocol) for network time synchronization
Command line interface (CLI) for quickly configuring major managed functions
DHCP Option 82 for IP address assignment with different policies
IGMP snooping and GMRP for filtering multicast traffic
Port-based VLAN, IEEE 802.1Q VLAN, and GVRP to ease network planning
QoS (IEEE 802.1p/1Q and TOS/DiffServ) to increase determinism
IEEE 802.3ad, LACP for optimum bandwidth utilization
Line-swap fast recovery
TACACS+, IEEE 802.1X, SNMPv3, HTTPS, and SSH to enhance network security
SNMPv1/v2c/v3 for different levels of network management
RMON for proactive and efficient network monitoring
Bandwidth management prevents unpredictable network status with “Lock port” to restrict access to authorized MAC addresses
Port mirroring for online debugging
Automatic warning by exception through email and relay output
Automatic recovery of connected device’s IP addresses
Configurable by web browser, Telnet/serial console, CLI, Windows utility, and ABC-02-USB automatic backup configurator
Input/Output Interface
Alarm Contact Channels
1 relay output with current carrying capacity of 2 A @ 24 VDC
Ethernet Interface
10/100/1000BaseT(X) Ports (RJ45 connector)
RKS-G4028-4GT models: 4
RKS-G4028-L3-4GT models: 4
100/1000BaseSFP Slots
RKS-G4028-4GS models: 4
RKS-G4028-L3-4GS models: 4
RKS-G4028-PoE-4GS models: 4
RKS-G4028-L3-PoE-4GS models: 4
Module
There are 3 module slots on the switch. Users can select different types of modules 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.
Refer to Expansion Modules in the Accessories section for a full list of supported interface modules.
Standards
IEEE 802.1D-2004 for Spanning Tree 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
Ethernet Software Features
Management
IPv4/IPv6, Flow control, Back Pressure Flow Control, DHCP Server/Client, ARP, RARP, LLDP, Port Mirror, Linkup Delay, SMTP, SNMP Trap, SNMP Inform, SNMPv1/v2c/v3, RMON, TFTP, SFTP, HTTP, HTTPS, Telnet, Syslog, Private MIB
Filter
GMRP, GVRP, GARP, 802.1Q, IGMP Snooping v1/v2/v3, IGMP Querier
Redundancy Protocols
STP, RSTP, Turbo Ring v2, Turbo Chain, Ring Coupling, Dual-Homing, Link Aggregation, Loop Protection, MSTP
Routing Redundancy
Security
Broadcast storm protection, Rate Limit, Access control list, Static port lock, Sticky MAC, HTTPS/SSL, SSH, RADIUS, TACACS+, Login and password policy, Secure boot, MAC authentication bypass, Trust access control
Time Management
SNTP, IEEE 1588v2 PTP (hardware-based), NTP Server/Client, NTP Authentication
Protocols
IPv4/IPv6, TCP/IP, UDP, ICMP, ARP, RARP, TFTP, DNS, NTP Client, DHCP Server, DHCP Client, 802.1X, QoS, HTTPS, HTTP, Telnet, SMTP, SNMPv1/v2c/v3, RMON, Syslog
Unicast Routing
L3 models: OSPF, Static Route
MIB
P-BRIDGE MIB, Q-BRIDGE MIB, IEEE8021-SPANNING-TREE-MIB, IEEE8021-PAE-MIB, IEEE8023-LAG-MIB, LLDP-EXT-DOT1-MIB, LLDP-EXT-DOT3-MIB, SNMPv2-MIB, RMON MIB Groups 1, 2, 3, 9
Power Substation
Switch Properties
IGMP Groups
Jumbo Frame Size
MAC Table Size
Max. No. of VLANs
Packet Buffer Size
Priority Queues
VLAN ID Range
Power Parameters
Total PoE Power Budget
Max. PoE Power Output per Port
PoE models:
IEEE 802.3af: 15.4 W
IEEE 802.3at: 30 W
IEEE 802.3bt: 90 W
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 the PoE system)
Operating Voltage
RKS-G4028-LV/2LV models: 18 to 72 VDC
RKS-G4028-HV/2HV models: 88 to 300 VDC, 85 to 264 VAC
PoE models: 46 to 57 VDC (for the PoE system)
Overload Current Protection
Reverse Polarity Protection
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 (PoE models only):
Max. 7.50 A @ 48 VDC
Physical Characteristics
IP Rating
Dimensions
440 x 44 x 300 mm (17.32 x 1.37 x 11.81 in)
Weight
RKS-G4028-LV/HV models: 4900 g (10.80 lb)
RKS-G4028-2LV/2HV models: 5200 g (11.46 lb)
RKS-G4028-PoE-LV/HV models: 5000 g (11.02 lb)
RKS-G4028-PoE-2LV/2HV models: 5300 g (11.68 lb)
Installation
Environmental Limits
Operating Temperature
-40 to 75°C (-40 to 167°F)
Storage Temperature (package included)
-40 to 85°C (-40 to 185°F)
Ambient Relative Humidity
5 to 95% (non-condensing)
Standards and Certifications
Safety
EN 62368-1, UL 62368-1, UL 61010
EMC
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
Railway
Freefall
Shock
Vibration
MTBF
Time
RKS-G4028-4GT-HV models: 572,888 hours
RKS-G4028-4GT-2HV models: 518,894 hours
RKS-G4028-4GS-HV models: 529,925 hours
RKS-G4028-4GS-2HV models: 483,436 hours
RKS-G4028-4GT-LV models: 548,589 hours
RKS-G4028-4GT-2LV models: 479,574 hours
RKS-G4028-4GS-LV models: 508,639 hours
RKS-G4028-4GS-2LV models: 449,160 hours
RKS-G4028-PoE-4GS-HV models: 508,190 hours
RKS-G4028-PoE-4GS-2HV models: 465,282 hours
RKS-G4028-PoE-4GS-LV models: 488,598 hours
RKS-G4028-PoE-4GS-2LV models: 433,472 hours
Standards
Features
Meets a wide range of demands from Fast Ethernet to full Gigabit industrial networks (up to 28 Gigabit ports) Modular interfaces for flexible connector type combinations Support for IEEE 802.3bt PoE for up to 90 W output per port High EMC immunity compliant with IEC 61850-3 and IEEE 1613 Hardware-based IEEE 1588 PTP for high-precision time synchronization Turbo Ring and Turbo Chain (recovery time < 20 ms @ 250 switches) , and STP/RSTP/MSTP for network redundancy -40 to 75°C operating temperature range Supports MXstudio for easy, visualized industrial network management Developed according to the IEC 62443-4-1 and compliant with the IEC 62443-4-2 industrial cybersecurity standards