Description
- Brand: Emerson
- Full Model Number: A6824 9199-00090
- Lifecycle Status: Legacy / Obsolete Status to Be Verified
- Core Function: Modbus and Rack Interface Module
- Top 3 Technical Specs: Modbus TCP/IP | Modbus RTU | 3U 4TE Single-Slot Format
- System Application: CSI 6500 / AMS 6500 Machinery Health Monitoring
- Ethernet Interface: RJ45 | 10BaseT
- Serial Interface: RS-485 Modbus RTU
- Serial Parameters: 19.2 kbaud | 8 Data Bits | Even Parity | 1 Stop Bit
- Default IP Address: 192.168.255.1
- Power Consumption: Max. 5 W
- Dimensions: 100 × 160 mm PCB Format | 3U Height | 4TE Width
- Net Weight: Approx. 320 g
- Rack Capacity: Up to 14 Modules per 19-Inch Rack
- Stock & Condition: New Surplus / Tested Refurbished Subject to Availability
- Shipping: Expedited Dispatch Subject to Order Cutoff and Carrier Service
- Warranty: 12-Month Supplier Warranty, Subject to Quoted Terms
Supply Chain & Technical Deep Dive
When a communication card fails in a legacy machinery monitoring rack, replacing the individual monitoring modules does not restore the connection to the plant control or data-acquisition system. Emerson A6824 9199-00090 is the Modbus and rack interface module used with the IMR 6000 series and associated CSI 6500 / AMS 6500 protection architectures. It collects parameters from installed monitoring modules and makes those values available through Modbus TCP/IP and Modbus RTU. The module uses a single rack slot and is specified in a 3U, 4TE Eurocard format. For maintenance teams supporting installed legacy racks, keeping the exact communication-module variant available can reduce the risk of extended equipment downtime.
The economic value comes from preserving the existing rack communication architecture instead of replacing a complete monitoring system to address one failed interface card. A6824 supports Ethernet communication through an RJ45 10BaseT interface and serial Modbus RTU through RS-485. The documented default network address is 192.168.255.1, while the serial interface uses 19.2 kbaud, 8 data bits, even parity, and 1 stop bit. Maximum power consumption is approximately 5 W, and the specified net weight is approximately 320 g. The module is designed for one rack slot, with up to 14 modules fitting into a standard 19-inch rack. —For surplus procurement, verify the exact board revision before purchase because visually similar communication modules may belong to different rack configurations.
Migration, Compatibility & Field Traps
Replacement Matrix
| Replacement Type | Assessment | Engineering Requirement |
|---|---|---|
| Drop-in Replacement | Conditional Like-for-Like Replacement | Confirm the existing IMR 6000 / compatible rack, module revision, slot arrangement, and backplane wiring |
| Software Compatible | Configuration Dependent | Verify IP settings, Modbus parameters, register mapping, and host-system configuration |
| Hardware Modification | Normally Not Required for Exact A6824 Replacement | Hardware changes may be required when changing rack families or switching to a different interface architecture |
A6824 and A6824-R should not be assumed to be interchangeable. The documented is a 4TE interface module for IMR 6000/10, IMR 6000/20, and IMR 6000/30 configurations, while -R uses a different 4TE implementation intended for redundancy in AMS 6500 systems. Confirm the exact part number and rack type before approving the replacement.
Field Traps — Watch Out
Rack Variant Mismatch: Verify the installed chassis and communication-module position before installation. A similar front-panel appearance does not establish electrical or system compatibility.
Network Configuration: A replacement module may require restoration of the plant’s existing IP address, subnet configuration, and Modbus mapping. The documented default IP address is 192.168.255.1, so engineers should not assume that the replacement will communicate immediately on the existing network.
RS-485 Settings: Check baud rate, parity, stop bit, and device addressing before commissioning the serial connection. A single parameter mismatch can prevent the host from receiving rack data.
Emerson A6824 9199-00090
Quality Assurance & Testing SOP
Each Emerson 9199-00090 unit should pass a controlled inspection before shipment. Begin with an OEM anti-counterfeit visual inspection covering Emerson markings, exact part number, revision identification, connector condition, PCB condition, mounting hardware, and evidence of unauthorized rework. Serial and revision information should be recorded whenever accessible.
Apply controlled power and perform the startup inspection. Check power consumption, module initialization, communication indicators, diagnostic behavior, and abnormal temperature or hardware indications. The test engineer should record any unexpected status condition rather than relying only on successful power-up.
Communication testing should cover Ethernet and RS-485 where the laboratory setup permits. For Modbus TCP/IP, establish an Ethernet connection and verify network response using the configured IP address. For Modbus RTU, test the serial interface using the documented 19.2 kbaud, 8-E-1 parameters. Read representative rack data and confirm that values and status information are transferred without unexpected communication errors.
A second test cycle should include repeated communication requests, power cycling, and connector reseating under controlled conditions. The objective is to identify intermittent communication faults before shipment. Final QA records should contain the exact model number, visible revision, visual inspection result, power-up result, Ethernet communication result, RS-485 communication result, and packaging condition.
Procurement-Driven FAQ
Is Emerson 9199-00090 genuinely in stock, and what is the cutoff for overnight shipping?
Physical availability should be confirmed against the exact 9199-00090 quantity, revision, and condition before the purchase order is released. Overnight or same-day dispatch depends on warehouse processing, order cutoff, carrier service, and destination. The confirmed dispatch commitment should be stated on the quotation.
How do you guarantee the condition of an obsolete or surplus ?
The physical condition should be declared before shipment. New Surplus identifies unused inventory, while Tested Refurbished identifies previously used equipment that has completed inspection and functional testing. Part number, revision, cosmetic condition, and communication-test status should be confirmed independently.
What are the warranty terms and return policies for defective units?
Warranty coverage should appear on the quotation or sales confirmation before payment. A supplier warranty may cover verified product defects or dead-on-arrival failures. Damage caused by incorrect wiring, electrical overstress, improper installation, unauthorized modification, or physical damage may be excluded.
Are there any firmware or software compatibility issues my engineers should check?
The primary engineering concern is configuration matching. Verify the installed rack family, revision, Ethernet settings, RS-485 parameters, Modbus register mapping, and host-side configuration before commissioning. Do not assume that a replacement card will automatically inherit the removed unit’s settings.
Can support both Modbus TCP/IP and Modbus RTU?
Yes. The is documented with both Ethernet Modbus TCP/IP and serial Modbus RTU communication capability. The Ethernet interface uses RJ45 10BaseT, while the serial interface uses RS-485 with the documented 19.2 kbaud, 8 data bits, even parity, and 1 stop bit configuration.
Start Chat
