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Phone: +86 16626708626Description
Key Technical Specifications
| Parameter | Specification |
| Manufacturer | Emerson Electric Co. / Epro |
| Part Number | A6824 (9199-00090) / A6824R (9199-00098-13) |
| System Architecture | AMS 6500 / CSI 6500 Machinery Health Monitor Chassis |
| Communication Protocols | Modbus TCP/IP (Ethernet) & Modbus RTU (Serial) |
| Serial Bus Interface | 6x RS-485 Lines (Up to 8 A6000/AMS 6500 monitors per line) |
| Ethernet Connection | 1x RJ45 Port (10Base-T) |
| Default IP Address | 192.168.255.1 (Subnet: 255.255.255.0) |
| Form Factor | 3U High, 1-Slot / 6TE (A6824 standard) or 4TE (A6824R redundant version) |
| Power Consumption | Max 5.0 Watts |
| Operating Temperature | 0 to 65 °C (32 to 149 °F) |
| Standard Compliance | API 670 Compliant |
Product Introduction & Supply Chain Strategy
The Emerson A6824 is a rack communication gateway for the AMS 6500 Machinery Health Monitor series. Installed in a 3U 19-inch card cage, it polls digital measurements, overall vibration levels, 1x/2x phase vectors, gap voltages, and channel alarm states from all protection cards in the rack. It converts these values into Modbus RTU (RS-485) and Modbus TCP/IP (Ethernet) registers, feeding them directly into DeltaV, Ovation, or third-party DCS/PLC architectures.
Maintaining an Emerson A6824 as New Surplus prevents loss of operator visibility on critical turbomachinery assets. Refurbished communication cards often exhibit degraded serial transceiver chips, unstable Ethernet ports, or corrupted configuration memory that cause silent data drops or bus lockups. New Surplus guarantees factory signal isolation, original baud-rate timing, and stable Modbus data streaming to host control systems.
A6824
A6824
Installation & Configuration Guide
1.Stage 1: Pre-Installation (Safety & Network Prep):Bypass relay locks, verify network parameters, and wear ESD strap.
Ensure control system engineers are notified that rack telemetry will temporarily disconnect during servicing. Verify IP network settings, Modbus node addresses, and baud rates in AMS Machinery Manager software. Put on a grounded ESD wrist strap before handling the module.
2.Stage 2: Module Extraction:Release front screws and extract module straight outward.
Unscrew the captive retention screws on the front panel. Unlatch the ejector handles to disengage the rear DIN connector from the rack backplane. Pull the card out along its guide slots and store it in an antistatic bag.
3.Stage 3: Hardware Jumpers & Seating:Set RS-485 termination jumpers and seat card into 3U slot.
Check onboard jumpers for line termination (120 Ω) and pull-up/pull-down resistors on active RS-485 bus lines. Align the A6824 module with the target 3U slot rails and slide it in firmly until the backplane connector locks. Tighten the faceplate thumbscrews.
4.Stage 4: Power-On & Telemetry Verification:Apply power, check network link LED, and verify Modbus register poll.
Re-energize the rack slot and confirm the power LED turns solid green. Connect the RJ45 cable or RS-485 lines. Perform a test read from the host DCS to verify that Modbus registers update correctly with active channel vibration and alarm status data.
Software Configuration & Upgrade Notes
- AMS Machinery Manager Sync: Parameter configuration (RS-485 baud rates, parity, IP settings, and Modbus map assignments) is configured via AMS Machinery Manager (v2.08 or newer recommended).
- RS-485 Termination: The A6824 features onboard jumpers to activate 120 Ω bus termination and line biasing (pull-up/pull-down) on each of its 6 serial lines. Ensure line termination is enabled only at the physical end-nodes of each bus loop.
- Hot-Swappable: The module supports live rack insertion/extraction without affecting the independent protective relay trip functions of neighboring vibration cards in the rack.
Frequently Asked Questions (FAQ)
Q: What is the primary function of the Emerson module?
A: The is the central communication gateway for the AMS 6500 rack. It collects dynamic vibration, gap voltage, and alarm status data from all rack channels and translates it into Modbus RTU / TCP protocols for DCS and PLC integration.
Q: What is the difference between the and the A6824R?
A: The is a 6TE wide single-slot module designed for standard IMR6000 racks. The A6824R is a 4TE wide module designed for IMR6500 series racks and supports dual redundant communication paths.
Q: Can the communicate over serial and Ethernet simultaneously?
A: Yes, the module can be configured to transmit Modbus TCP/IP over Ethernet and Modbus RTU over RS-485 concurrently, providing redundant communication channels to the control room.
Q: Does the module come with warranty coverage?
A: Every Emerson module ships in static-shielding ESD packaging with verifiable OEM serial numbers and is backed by a full 1-year replacement warranty.
