Feature

●Rugged industrial-grade opto-isolated RS485 hub / splitter
●Supports multi-drop RS485 networks for up to 512 (4x128) nodes
●2500V optical isolation, built-in 600W surge protection, 15kV static protection and circuit protection
●300 to 115.2K Baud operation (auto-sensing & self-adjusting)
●Expandability: Multiple HUB-485-4 can be connected for expanding the RS485 system


Description

RS485 HubRS485 Hub

Industrial Opto-Isolated RS485 Hub

Model: HUB-485-4

The HUB-485-4 is a rugged, industrial-grade, optically-isolated RS485 Hub / Splitter / Repeater, which can be used to expand RS-485 networks by splitting one RS-485 network into four (star wiring), in turn increasing the maximum number of nodes and the distance covered by an RS-485 network. This industrial opto-isolated RS485 Hub operates within a temperature range of -40ºF to 185ºF (-40ºC to 85ºC), and it features 600W surge protection, 15kV ESD static protection and 2500V opto-isolation circuitry, which effectively protect your RS232 / RS485 devices from ground loops, noise problems, transient surges, remote lightning and spikes. It was designed so that data coming from the input (RS232 or RS485) will transmit to all four loops of RS-485 networks. However, each loop of RS485 devices will transmit data back to the input only, thus reducing any possible interference between each loop of the RS485 devices, making the RS485 networks more robust and reliable.

CommFronts RS485 Hub supports standard RS485 devices as well as BACnet and Modbus devices, and it supports data rates up to 115.2K Baud and features data format auto-sensing and self-adjusting. Therefore, it requires no manual settings, software drivers or flow control, making the unit a highly reliable and truly plug-and-play device.

A separate external power supply is included in the package, and, thanks to the professional and unique casing design, the product can be mounted directly on a wall, panel or DIN Rail, without a need of using any unsecured DIN-Rail or wall-mount brackets.

  • Rugged industrial-grade opto-isolated RS485 hub / splitter
  • Split one RS-485 network into 4 star-wiring networks (expandable to 8, 16, and 32)
  • Supports multi-drop RS485 network
  • 2500V optical isolation, 300 to 115.2K Baud
  • Built-in 600W surge protection, 15kV static protection and circuit protection
  • Operating Temperature: -40ºF to 185ºF (-40ºC to 85ºC)
  • Direct DIN-Rail or Wall / Panel mounting (stackable)
  • CE/FCC strictly certified by TUV

YOUR COMPLETE SOLUTION FOR DATA CONVERSION

usb-connectionusb-connection

serial-connectionserial-connection

fiber-optic-point-to-pointfiber-optic-point-to-point

fiber-optic-multi-dropfiber-optic-multi-drop

USB Conversion

With our high-quality, high-performance USB converters that use only top-quality chipsets such as those from FTDI and Silicon Labs, USB signals are converted seamlessly into RS-232, RS-485, RS-422, TTL and Ethernet signals. You can confidently choose from our menu of industrial and commercial-grade devices, while knowing that you will get nothing but the best from CommFront.

Serial Conversion

CommFront offers a range of rugged industrial-grade RS-232 /RS-485 /RS-422 /TTL converters. These converters support multi-drop RS-485 /RS-422 networks and come with 600W surge protection, 15KV ESD protection, selectable end-of-line terminators, and optional 2500V optical-isolation circuitry, which ensure crisp data signals without interference for all types of installations.

Fiber Optic Conversion (Point to Point)

Our fiber optic converters run on a light-speed fiber backbone that is inherently resistant to radio and electrical interference, such as EMI / RFI, lightning, transient surges and ground loops. These converters extend serial (RS-232 / RS-485 / RS-422 / TTL) and Ethernet signals with many options - single-mode and multi-mode; ST, SC, FC and SFP connectors; point-to-point and advanced daisy-chain/self-healing redundant-ring fiber networks – giving your data networks unparalleled flexibility, reliability, and transmission range.

Fiber Optic Conversion (Multi-Drop)

CommFronts fiber optic converters run on a light-speed fiber backbone that is inherently resistant to radio and electrical interference, such as EMI / RFI, lightning, transient surges and ground loops. These converters extend serial (RS-232 / RS-485 / RS-422 / TTL) and Ethernet signals with many options - single-mode and multi-mode; ST, SC, FC and SFP connectors; point-to-point and advanced daisy-chain/self-healing redundant-ring fiber networks – giving your data networks unparalleled flexibility, reliability, and transmission range.

WHY OPTICAL ISOLATION?

Ground LoopsGround Loops

lightninglightning

Voltage SurgesVoltage Surges

SparksSparks

Ground Loops

Ground loop currents can flow through “the path of least resistance” via either the common earth ground or the ground wire and cause serious damages to the connected devices.

Optical isolation uses an LED (Light Emitting Device) and a photosensitive transistor to transfer data across the isolation barrier - typically an air gap; in other words, data is transmitted using light instead of electrical signals, so there is no physical connections between the grounds and the data lines, thus removing the ground loop problems.

Remote Lightning

Serial networks are often exposed to remote lightning because of the long distances and the surrounding electrical equipment.

Optical isolation uses an LED (Light Emitting Device) and a photosensitive transistor to transfer data across the isolation barrier - typically an air gap; in other words, data is transmitted using light instead of electrical signals, so there is no physical connections between the connected devices, thus effectively preventing remote lightning, voltage surges, and sparks from destroying other parts of the system.

Voltage Surges

Because of the long distances and the surrounding electrical devices, voltage surges can run across the system and cause damages to the valuable equipment.

Optical isolation uses an LED (Light Emitting Device) and a photosensitive transistor to transfer data across the isolation barrier - typically an air gap; in other words, data is transmitted using light instead of electrical signals, so there is no physical connections between the connected devices, thus effectively preventing remote lightning, voltage surges, and sparks from destroying other parts of the system.

Electric Sparks

Electric sparks can cause transient voltage to run across the system and cause serious damages to the valuable equipment.

Optical isolation uses an LED (Light Emitting Device) and a photosensitive transistor to transfer data across the isolation barrier - typically an air gap; in other words, data is transmitted using light instead of electrical signals, so there is no physical connections between the connected devices, thus effectively preventing remote lightning, voltage surges, and sparks from destroying other parts of the system.

SPECIFICATIONS

Part Number HUB-485-4
Compatibility EIA/TIA RS-232 and RS-485 standards
Power Source 9 to 30VDC (External AC to DC power adapter included)
Baud Rates 300 to 115,200bps
Maximum Number of Drops 4 x 128
Connector 2x 10-way Terminal Block
End of Line Terminator N/A
Surge Protection 600W
Static Protection (ESD) Up to 15KV
Dimensions (H x W x D) 4.9 x 3.6 x 0.9 in (125 x 73 x 33 mm)
Weight 4.9 oz (140 g) (with terminal blocks)
Operating Temperature -40ºF to 185ºF (-40ºC to 85ºC)
Operating Humidity Up to 90% RH (non condensation)
HUB-485-4 Connection DiagramHUB-485-4 Connection Diagram
4-port rs485 hub 4-wire RS485/RS422 Hub usb to rs232 4-port hub Industrial USB3.0 4-Port Hub USB 3.0 7-Port Hub
Isolated RS485 Hub Isolated RS422/RS232 Hub USB to 4-Port RS232 Hub USB3.0 4-Port Hub USB3.0 7-Port Hub
Customer Reviews
4.7 out of 5 stars
4
Price $149.95 $187.95 $174.95 $145.95 $169.95
Compatibility RS485 RS422, RS232 USB2.0, RS232 USB3.0/2.0/1.x USB3.0/2.0/1.x
Number of Ports Expanded 4 (expandable) 4 (expandable) 4 4 7
Optical Isolation 2500Vrms (AC, 1 min) 2500Vrms (AC, 1 min) - - -
Data Rates 300 to 115.2Kbps 300 to 115.2Kbps USB: 480M bps; Serial: 12Mbps 5Gbps 5Gbps
Installation DIN-Rail OR Wall/Panel Mount Wall/Panel Mount DIN-Rail OR Wall/Panel Mount DIN-Rail OR Wall/Panel Mount DIN-Rail OR Wall/Panel Mount