Hirschmann RH1-TP Industrial Ethernet hub

Technical Specifications

• DC 18 to 32 V safe extra-low voltage (SELV) (redundant inputs decoupled)
• Typ. 80 mA at 24 VDC (without data)
• Max. 130 mA at 24 VDC (with data)
• 4 ports in compliance to 10BASE-T with RJ45 connectors (shielded)
• Transition TP-Port ↔ TP-Port

The rail hub RH1-TP supports a fast and reasonable network expansion. You can connect up to four data terminal equipments or further twisted pair segments via twisted pair. For startup procedure just fit the rail hub on an ISO/DIN rail, without any further configuration time. The U24 voltage is supplied via the terminal block and can be feed in redundantly. The terminal block contains an integrated indicator contact, receiving error and warning messages of the rail hub which are defined as digital signals. These signals e.g. can be utilized as process messages by a programmable logic control (PLC). The indicator contact becomes active as soon as disturbances appear in the rail hubs, that is when a power supply should fail or at least one TP port reports a faulty link status or has auto partitioned.For diagnosis there are LEDs available which indicate collisions, link status, segmentation, power and received data.The railhub has four twisted pair (TP) interfaces. It is possible to connect up to four terminals or other TP segments using TPs.The module conforms to the specifications of ISO/IEC standard 8802-3.

General Functions description

PECIFIC FUNCTIONS OF THE TP INTERFACE

• Link control: The RH1-TP monitors the connected TP line segments for short-circuit or interrupt using idle signals during frame pauses in accordance with IEEE standard 802.3 10BASE-T. The RH1-TP does not transmit any data in a TP segment from which it does not receive idle signals.

• Auto polarity exchange: If the reception line pair is incorrectly connected (RD+ and RD- switched) polarity is automatically reversed.

Technical FAQ

Q: What power supply does the RH1-TP require?
A: The RH1-TP operates from 18 to 32 V DC SELV and supports redundant power input through the integrated 5-pole terminal block.

Q: What diagnostic information is available?
A: Front-panel LEDs display power status, received data, collisions, link status, and segmentation for each TP port, allowing network conditions to be checked without additional diagnostic equipment.

Q: What is the purpose of signal regeneration?
A: The RH1-TP regenerates the shape and amplitude of received Ethernet signals before forwarding them. It also performs retiming and preamble regeneration to help maintain reliable communication across connected network segments.

Q: What happens if a network fault occurs on one TP port?
A: Each TP interface supports automatic partitioning. If continuous collisions or link failures are detected on one port, that segment is isolated from the rest of the network while communication on the remaining ports continues. Once normal communication is restored, the port is automatically reconnected.

Q: Are your products brand new?
A: Yes. We only supply 100% original and brand-new products. All items are sourced through authorized channels and have never been used or refurbished.

Q: Why can customers buy with confidence?
A: Because every product is backed by our 1-Year Warranty Guarantee of Quality, ensuring reliability, customer satisfaction, and long-term support after delivery.

Q: Do you provide international shipping?
A: Yes. We ship products to customers worldwide using reliable international logistics services such as EMS, DHL, UPS, and FedEx.

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