Hirschmann RS20-2400M2M2SDAPHC09.0.14 Industrial Switch

Hirschmann RS20-2400M2M2SDAPHC09.0.14 Industrial Switch

The Hirschmann RS20-2400M2M2SDAPHC09.0.14 (Belden Part Number: 943 434-043) represents the maximum port-density configuration of the compact OpenRail RS20 ruggedized series. It is a 24-port managed Fast Ethernet switch engineered to serve as a reliable control-room hub or high-density field aggregator in complex automation environments.

Product Introduction / Overview

In high-density industrial control cabinets, mounting space is always at a premium. Rather than daisy-chaining multiple small switches—which introduces latency, failure points, and management overhead—the RS20-2400M2M2SDAPHC09.0.14 provides a massive 24-port footprint within a single, space-optimized DIN-rail chassis.

Equipped with 22 Fast Ethernet copper ports and 2 Multi-Mode SC fiber ports, this model aggregates dozens of localized PLCs, distributed I/O blocks, and operator HMIs while maintaining a secure, interference-free fiber optic connection up to 5 km back to the enterprise network. Running the proven HiOS Layer 2 Professional (L2P) Software (v09.0.14), it delivers enterprise-grade VLAN management, multicast filtering (IGMP Snooping), and robust security protocols built specifically for operational technology (OT).

Technical Parameter List

Product Features / Core Advantages

Maximum Port Density: Consolidates 24 nodes into a compact 110 mm wide housing, dramatically reducing cabinet footprint, component cost, and patch cabling mess.

Proactive Security Shielding: Supports advanced access control lists (ACLs), IEEE 802.1X network authorization, MAC-address port locking, and multi-level user password management to prevent physical and digital network intrusion.

Industrial Redundancy Engine: Standardized MRP (Media Redundancy Protocol) and HIPER-Ring technologies guarantee ring recovery times under $20\text{ ms}$ in the event of physical fiber or copper breaks, keeping critical processes running.

Precision Multicast Management: Built-in IGMP Snooping (v1/v2/v3) and Querier restrict high-bandwidth industrial video and Ethernet/IP traffic strictly to requesting endpoints, preventing network flooding.

Model Classification (RS20 Nomenclature)

The code string on the unit’s rating plate details its physical and software attributes:

RS20 – 24 00 M2M2 S D A P H C 09.0.14

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[1] [2] [3] [4] [5][6][7][8][9][10] [11]

[1] Series: RS20 (Compact Managed OpenRail Switch).

[2] Total Ports: 24.

[3] Gigabit Ports: 00 (All ports are Fast Ethernet 10/100M).

[4] Fiber Interface: 2 x Multi-Mode ($1300\text{ nm}$) SC Fiber Ports.

[5] Temperature Rating: Standard Operating Range ($0^\circ\text{C}$ to $+60^\circ\text{C}$).

[6] Input Voltage: Dual $12/24/48\text{ V DC}$ and $24\text{ V AC}$.

[7] Approvals: CE, FCC, cUL508 (Standard Industrial Safety).

[8] Software Range: Layer 2 Professional (P).

[9] Operating System: HiOS / Classic Switch Software (H).

[10] Configuration: Standard design version (C).

[11] Firmware Release: 09.0.14 (Maintenance release focusing on security patches and advanced IGMP optimizations).

Environmental Tolerance Conditions

Operating Temperature: $0^\circ\text{C}$ to $+60^\circ\text{C}$ ($32^\circ\text{F}$ to $140^\circ\text{F}$)

Storage/Transport Temp: $-40^\circ\text{C}$ to $+70^\circ\text{C}$

Relative Humidity: 10% to 95% (non-condensing)

Vibration Resistance: Compliant with IEC 60068-2-6 ($4\text{ g}$ acceleration from $10\text{ Hz}$ to $150\text{ Hz}$)

Industrial Noise Immunity: Enclosure certified to meet EN 61000-4-2 through EN 61000-4-6 (ESD, Surge, EFT, and Conducted Immunity).

Installation Method

[DIN Rail Attachment]

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—|— <– Hook upper rail housing tab

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[Switch] <– Press bottom casing flatly inward

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—|— <– Metal spring clip snaps under rail

DIN-Rail Hanger Hooking: Locate the rigid metal mounting track on the back of the housing. Tilt the switch slightly backward and hook the upper slot of this track over the top flange of the standard 35mm DIN rail.

Downward Snap-in: Push the front-lower portion of the switch firmly toward the wall or panel. The heavy-duty metal spring-loaded tension slider will retract and snap over the lower edge of the rail, securing the switch.

PE Grounding Connection: Always wire the functional grounding screw (located at the bottom-left corner of the aluminum front plate) to your control cabinet’s primary ground rail using a high-gauge, low-impedance conductor.

Operating Instructions

1. Redundant Power Input Wiring

Unscrew the 6-pin terminal block plug at the top-right corner. Complete wire routing:

Connect the main DC positive ($+$) to L1+ and ground ($-$) to M1.

Connect the backup DC positive ($+$) to L2+ and ground ($-$) to M2.

Fault Signal Relay: Use terminals F1 and F2 to wire an alarm signaling loop. If power supply 1 or 2 fails, or a critical port drops its connection, the internal dry-contact relay opens to trigger an external alarm indicator or PLC register.

2. Initial Setup & Browser Access

Step A: Download the free Hirschmann HiDiscovery utility. Connect your laptop to any copper RJ45 port on the switch.

Step B: Open HiDiscovery, click Signal, locate the unconfigured RS20 switch via its MAC address, and assign a valid, free IP address, subnet mask, and default gateway to match your network.

Step C: Open a standard browser (e.g., Chrome or Firefox) and enter the assigned IP address.

Step D: Log in using the default credentials: Username: admin and Password: private. Change the password immediately upon initial configuration.

3. Firmware Maintenance (Backup and Restore)

Because this unit runs version 09.0.14. ensure backup configurations are saved:

Insert a Hirschmann ACA21 USB Auto-Configuration Adapter into the front USB slot. The switch will automatically write its current configuration onto the dongle.

If the switch ever requires physical replacement, slot a new RS20-2400M2M2 switch onto the DIN rail, insert the ACA21 dongle, and power it up. The switch will automatically read the configuration and boot with identical settings, avoiding any need to log in manually.