HIRSCHMANN MS20-1600SAAE Replacement for MICE MS20

Product Overview

HIRSCHMANN MS20-1600SAAE Replacement for MICE MS20 Series: Seamless Transition & Legacy System Compatibility

Upgrading or replacing a legacy HIRSCHMANN MICE MS20 Series switch in an active industrial control network is one of the most risk-sensitive operations a plant engineer can undertake. The HIRSCHMANN MS20-1600SAAE modular switch backplane is the authoritative drop-in solution for facilities running aging MICE MS20 infrastructure — whether the original unit has reached end-of-life, suffered a hardware fault, or is being phased out as part of a broader DCS or PLC network modernization program. TOPNLMS maintains verified stock of the MS20-1600SAAE to support rapid replacement with minimal production interruption.

The MS20-1600SAAE serves as the central backplane chassis within the MICE MS20 modular switch family. It provides the passive interconnect fabric that links all installed media modules — including 100BASE-TX copper ports, 100BASE-FX fiber modules, and Gigabit uplink modules — into a unified managed switch. When this backplane fails or becomes unavailable, the entire switch assembly loses function, making fast, verified replacement critical for any time-sensitive industrial environment.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful MS20-1600SAAE replacement rarely involves the backplane alone. In most MICE MS20 deployments, the backplane is populated with a combination of media modules that must be carefully transferred or replaced in parallel. The HIRSCHMANN MM2-2TX and MM4-4TX copper media modules are the most common field-installed components and transfer directly to the new backplane without any wiring changes — the RJ45 patch cables and field terminal connections remain in place. Where fiber uplinks are in use, the MM2-2FX and MM4-4FX multimode fiber modules likewise transfer without modification, preserving existing fiber runs between control cabinets or between the switch and a remote I/O station.

For sites running redundant power architectures, the HIRSCHMANN MS20-PWR power supply module must be verified for compatibility with the replacement backplane before installation. Dual-PSU configurations are common in process industries where switch downtime is unacceptable, and the MS20-1600SAAE supports this architecture natively. If the existing PSU modules show signs of wear or are approaching their rated service life, this replacement event is an appropriate time to refresh them alongside the backplane.

Many MICE MS20 installations are integrated into broader PROFINET or Modbus TCP networks managed by a SIEMENS S7-300 or S7-400 PLC, or in some cases a Rockwell ControlLogix or CompactLogix controller. The MS20-1600SAAE retains the same PROFINET device identity and MAC address structure as the original unit once the configuration is restored, meaning the upstream PLC does not require any program changes or I/O mapping updates after the swap. The switch simply reappears on the network with its original device name and IP address.

Where the MICE MS20 switch serves as a managed layer-2 device within a ring topology using HIRSCHMANN HIPER-Ring or standard RSTP/MSTP, the replacement backplane supports the same ring protocols. The ring configuration — including port roles, ring port assignments, and VLAN segmentation — is restored from the backed-up configuration file via the RS-232 console port or the Ethernet management interface. Engineers familiar with HIRSCHMANN’s Industrial HiVision network management software will find the replacement process straightforward: the new backplane is discovered automatically once it is powered and connected, and the saved device configuration can be pushed remotely.

In control cabinets where the MICE MS20 switch is co-located with a HIRSCHMANN GECKO or SPIDER series unmanaged switch for local I/O distribution, the physical cabinet layout and DIN rail spacing are unaffected by the backplane replacement. The MS20-1600SAAE occupies the same physical envelope as the original unit, so no cabinet re-engineering or busbar relocation is required. This is a significant advantage in compact control panels where space is constrained and any physical modification would require a full panel re-certification.

Retrofit Guidance FAQ

Q: Do I need to rewire the field cables when replacing the MS20-1600SAAE backplane?
No. All field wiring terminates on the individual media modules (MM2-2TX, MM4-4TX, MM2-2FX, etc.), not on the backplane itself. The media modules are removed from the failed backplane and inserted into the replacement unit. Field cables remain connected to the modules throughout the process, eliminating the risk of wiring errors during the swap.

Q: Will my existing PROFINET or Modbus TCP configuration survive the replacement?
Yes, provided you have a saved configuration backup. The MS20-1600SAAE supports configuration export via the RS-232 console or the web management interface. Once the replacement backplane is powered, the saved configuration — including PROFINET device name, IP address, VLAN settings, and port parameters — is restored, and the switch reappears on the network transparently.

Q: Is the MS20-1600SAAE compatible with both HiOS and Classic OS firmware?
Yes. The backplane hardware is firmware-agnostic. The firmware version is stored on the management module, not the backplane. If the management module is transferred from the original unit, the firmware version is preserved. If a new management module is required, HIRSCHMANN’s standard firmware upgrade procedure applies.

Q: How much physical space does the replacement require in the control cabinet?
The MS20-1600SAAE has an identical mechanical footprint to the original unit. DIN rail mounting dimensions, depth, and weight are unchanged. No cabinet modification, busbar relocation, or additional clearance is required.

Q: What is the typical on-site installation time for this replacement?
For an experienced controls engineer with a configuration backup available, the physical swap and network restoration typically takes 30–90 minutes. The majority of this time is spent on configuration restoration and network verification rather than physical installation.

Q: Can I use this backplane in a ring topology with HIPER-Ring or RSTP?
Yes. The MS20-1600SAAE fully supports HIRSCHMANN HIPER-Ring, RSTP, and MSTP ring protocols. Ring port assignments and redundancy settings are restored from the configuration backup along with all other switch parameters.

Warranty Assurance

Every HIRSCHMANN MS20-1600SAAE unit shipped by TOPNLMS is covered by a 12-month warranty from the date of delivery. Prior to shipment, each unit undergoes a functional verification process that includes power-on testing, backplane slot integrity checks, and management interface validation. Units that do not pass this verification are not offered for sale.

In the event of a warranty claim, TOPNLMS provides a direct replacement or full refund within the warranty period. Our technical team is available to support pre-shipment compatibility verification, configuration questions, and post-installation troubleshooting. We understand that industrial switch replacements are time-critical operations, and our response commitment reflects that urgency.

Stock is maintained in Xiamen, China, with express international shipping available to most destinations. Lead time for in-stock units is typically 1–3 business days from order confirmation to dispatch. Customs documentation, including commercial invoice, packing list, and certificate of origin, is provided with every international shipment to facilitate smooth customs clearance.

For procurement inquiries, compatibility verification, or bulk order pricing, contact our team directly before placing your order. We are equipped to support urgent replacement scenarios with same-day quotation and priority dispatch.