Email: jiedong@sxrszdh.com
Phone / Wechat：+86 15340683922Description
Product Introduction
The DS3800NMEA is a node master expansion adapter board for Mark IV systems—the “N” in the suffix indicates node, the “M” indicates master, the “E” indicates expansion, and the “A” is a manufacturing revision. This board provides expansion connectivity for node master control and signal distribution in turbine control applications. It was used in installations where node master expansion was needed to extend the control system.
The board plugs into the Mark IV backplane and provides a node master expansion interface. Compare this to the DS3800NMA1A (node master adapter) or the DS3800NLBA (local bus adapter). The NMEA is specifically for node master expansion applications where signal distribution and control expansion are needed.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Interface Type | Node master expansion adapter |
| Expansion Interface | Mark IV node master expansion |
| Backplane Interface | Parallel, Mark IV-specific |
| Diagnostic LEDs | Power, Link Status, Fault |
| CPU Compatibility | DS3800DMP series (Mark IV) |
| Backplane Current Draw | +5V DC @ 0.7A, +12V DC @ 0.3A |
| Operating Temperature | 0 to 60°C (non-condensing) |
| Dimensions | 328 mm x 185 mm x 20 mm (full-length Mark IV) |
| Mounting | Standard Mark IV rack slot |
| Configuration | No DIP switches—hardware address fixed |
Compatible Replacement Models
| Model | Compatibility Level | Notes |
|---|---|---|
| DS3800NMEA1 | ✅ Drop-in Replacement | NMEA with minor revision. Same functionality. |
| DS3800NMA1A | ✅ Drop-in Replacement | Similar node master adapter—check configuration. |
| DS3800NLBA | ✅ Drop-in Replacement | Similar local bus adapter—check configuration. |
| DS3800NIOA | ❌ Functionally Incompatible | Standard I/O board—different function. |
| DS3800NECA | ❌ Functionally Incompatible | Ethernet board—different function. |
Frequently Asked Questions (FAQ)
What does the NMEA board do?
The NMEA is a node master expansion adapter board for Mark IV systems. It provides expansion connectivity for node master control and signal distribution.
What’s the difference between the NMEA and the NMA1A?
The NMEA is an expansion adapter—it provides expansion connectivity for node master control. The NMA1A is a node master adapter. The NMEA is for expansion applications; the NMA1A is for master node control.
Can I hot-swap this board?
No. Mark IV backplanes are not hot-swappable. Power down the cabinet, lock out the breaker, and wait 60 seconds before removing or installing the board.
What’s the most common failure mode on the NMEA?
We’ve serviced about a dozen NMEA boards. The most common failure is the expansion interface circuitry—it can degrade over time, causing signal integrity issues. The second most common failure is the edge connector—corrosion from humidity. The board is repairable.
What’s your warranty and lead time?
We stock the NMEA in limited quantities. Lead time is 1-2 business days. We offer a 1-year warranty. We test every board with a 24-hour burn-in and a diagnostic verification. The test report is included.
Is this board compatible with the Mark VIe?
No. This board is for Mark IV systems only. The backplane architecture is different.
PHILIPS PE-1957/26
GE IS200TBAIH1C
WOODWARD 9907-164
Email: sales@plcfcs.com- Phone：+86 15343416922
- Wechat：+86 15343416922
Wechat：+86 15343416922PLC : Allen Bradley , Siemens MOORE, GE FANUC , Schneider
DCS : ABB ,Honeywell, Invensys Triconex , Foxboro , Ovation,YOKOGAWA, Woodword, HIMA
TSI : Triconex , HIMA , Bently Nevada , ICS Triplex
Complete service we offer
Payment: T/T
Delivery: 1-2 days
Shipment: DHL UPS FedEx, etc
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