Description
Product Overview
Communication faults in a medium-voltage drive can interrupt supervisory commands, status reporting, and coordination with plant-level control equipment. The Siemens Robicon A1A363818.00M is identified in Perfect Harmony spare-parts references as a communications board for the NXGII control platform. It forms part of the drive’s internal control architecture and provides a communication interface for exchanging data with external control networks through the appropriate network adapter.
The communications board is not interchangeable with the system I/O board, fiber-optic link board, or signal conditioning board. Each serves a different role in the controller. The NXGII communications architecture can use network adapter modules for protocols such as PROFIBUS, DeviceNet, Modbus TCP, ControlNet, and Modbus Plus or RTU, depending on the installed adapter and drive configuration. The presence of a communications board alone does not establish support for every protocol. Before ordering a replacement, identify the adapter installed on the existing board and verify its part number and configuration.
For maintenance and procurement teams, the Siemens Robicon A1A363818.00M is particularly relevant when diagnosing lost network communication, missing drive status, or failed supervisory commands. These symptoms can also originate from the network adapter, cabling, controller configuration, or upstream PLC/DCS network. Record the active alarms, installed board revision, adapter model, and drive software version before replacing hardware. Spare-parts references list A5E03407403 as a newer communications-board reference associated with A1A363818.00M, but this should be treated as a cross-reference to verify—not automatic proof of a drop-in replacement.
Product Introduction
When a Perfect Harmony drive disappears from the plant network, the communications board is one possible fault point—but it is not the only one. The A1A363818.00M is cataloged as a communications board for the Robicon NXGII controller, with network capability dependent on the installed adapter and system configuration.
For replacement planning, verify the complete part number, revision, network adapter, and drive software generation. That check is especially important on legacy installations where board generations and fieldbus modules may differ.
Key Technical Specifications
| Parameter | Details |
|---|---|
| Product model | A1A363818.00M |
| Manufacturer / brand | Siemens Robicon |
| Product type | Communications board / control communications PCB |
| Drive family | Perfect Harmony medium-voltage AC drives |
| Control platform | NXGII |
| Primary function | Communication between the drive control system and supported external networks |
| Network support | Depends on the installed network adapter and configuration |
| Associated board reference | A5E03407403 listed as a newer communications-board reference |
| Related Siemens order number | 6SR3960-0CD00-0AD0 |
| Related legacy reference | LDZ363818.00C, reported in spare-parts listings |
| Mounting | Internal drive control assembly; confirm slot and connector details |
| Supply voltage | Not verified for this exact board |
| Operating temperature | Confirm from the applicable drive documentation |
| Protection rating | Not verified; intended for installation within the drive assembly |
| Firmware / software compatibility | Verify against the installed NXGII hardware and software version |
| Lifecycle | Listed as discontinued by a parts supplier; verify current manufacturer status |
| Condition | Confirm actual condition with supplier |
The board identification and order-number cross-reference are supported by NXGII spare-parts documentation and catalog references. Detailed environmental and electrical ratings should be verified against the specific hardware revision.
A1A363818.00M
Related Products
These components belong to the same drive control ecosystem but have different functions. Confirm compatibility before treating any related part as a substitute.
1. A5E03407403 — Communications Board Listed as a newer communications-board reference associated with A1A363818.00M. Confirm the approved hardware revision, adapter compatibility, and any required configuration changes.
2. A1A10000423.00M — NXGII System I/O Board Handles system-level I/O functions. Investigate it when the issue involves input/output processing rather than network communication.
3. A1A461D85.00M — Fiber-Optic Link Board Provides fiber-optic links within the drive control architecture. It is a separate board and should not be confused with the external network communications interface.
4. A5E01708486 — Signal Conditioning Board Processes signals within the converter control system. It is not a replacement for the communications board.
5. A1A10000350.00M — BGA Modulator Board A separate controller assembly associated with modulator functions in the Perfect Harmony system.
6. A1A363628.00 — NXGII Backplane Provides the board interconnection structure. Consider it when diagnosing a suspected backplane or connection fault, not as a routine substitute for a communications board.
7. A1A252241.155 — PROFIBUS-DP Network Adapter Reference Listed as an adapter option for PROFIBUS-DP in the NXG/NXGII communication ecosystem. Verify the exact module and compatibility with the installed communications-board generation.
8. A1A252241.157 — Modbus Ethernet Adapter Reference Listed for Modbus Ethernet in the same family of network adapter references. Confirm the installed interface and configuration before ordering.
Frequently Asked Questions
Q1. What does the .00M communications board do?
It provides communications functionality within the Robicon Perfect Harmony NXGII control system. External network support depends on the installed adapter and drive configuration.
Q2. Which protocols does this board support?
The NXG/NXGII ecosystem includes adapter options for networks such as PROFIBUS-DP, DeviceNet, Modbus Ethernet, ControlNet, Modbus Plus, and Modbus RTU. This does not mean every protocol is available on every board. Check the installed adapter part number and drive configuration.
Q3. Can I replace .00M with A5E03407403?
A spare-parts listing associates A5E03407403 with the communications-board function and references .00M as an earlier part. Confirm the specific drive generation, adapter module, revision, and approved replacement documentation before installing it.
Q4. Can I hot-swap this board while the drive is operating?
Do not assume hot-swap support. Follow the drive-specific maintenance procedure, site lockout/tagout requirements, and electrical isolation instructions. Only qualified personnel should perform work on the drive control assembly.
Q5. Does it support firmware v3.1?
Compatibility with firmware v3.1 has not been verified for this exact part number. Check the NXGII controller generation, software release, and network adapter documentation before replacement or commissioning.
Q6. Will replacing the communications board erase drive parameters?
That depends on the system configuration and where the relevant settings are stored. Record network settings, adapter identity, node address, communication parameters, and available drive configuration backups before removing the existing board. Do not assume the replacement will inherit the old configuration automatically.
Q7. How should I verify a replacement board before purchase?
Request photographs showing the full part number, revision markings, connectors, and installed network adapter. Ask whether the unit is new, unused surplus, repaired, or refurbished, and request available functional-test evidence. Confirm warranty terms and compatibility with the installed drive in writing.
