Multi Function Termination Unit | NTMF01 | ABB

Technical Specifications

NTMF01 provides a place to connect two RS-232-C cables with DB-25 connectors. Dipshunts allow either port of the termination unit to be configured to operate as DTE or DCE devices. This feature allows the termination unit to terminate a number of computers or terminals. One serial link connection on the termination unit enables a multi-function controller module to communicate to an NDCS03 Digital Control Station or IISAC01 Analog Control Station.

Troubleshooting & Comissioning Checklist

RS-232 Distances: Confirm external serial line paths do not exceed the standard 15-meter (50-foot) threshold for RS-232 unless an active line driver/converter is utilized.
Isolate Outputs: Ensure any downstream processing systems or automated control actions linked to the serial lines are bypassed or placed in manual mode.
Perform Cold Check: Verify zero ohms between ground planes and that power supply rails to the cabinet framework sit strictly within designated tolerances.

Field Engineering Considerations

Dual RS-232-C Ports: The unit provides physical termination points for two serial RS-232-C communication channels using standard DB-25 connectors. These route data from control modules out to computers, diagnostic terminals, SCADA systems, or sequential event recorders (SER).
DTE vs. DCE Sifting: The board includes on-board dipshunts. Engineers must configure these manually to flip the electrical pinout of the ports depending on whether the connected field asset is a Data Terminal Equipment (DTE) or Data Circuit-terminating Equipment (DCE) device.
Control Station Link: A dedicated serial link connection is integrated onto the board, enabling the multi-function controller to bridge directly to an IISAC01 Analog Control Station or an NDCS03 Digital Control Station.

Technical FAQ

Q: What is the primary purpose of the ABB NTMF01?
A: The NTMF01 acts as a central hardware interface that provides two RS-232-C serial communication ports via DB-25 connectors. It primarily routes serial communications between ABB INFI 90 modules (such as IMMFC03/IMMFC04 Multi-Function Controllers) and external equipment like engineering workstations, host computers, printers, or sequential event recorders.

A: It is a 7x7 inch square printed circuit board that mounts directly inside an INFI 90 cabinet onto an NFTP01 Field Termination Panel.

A: The board runs on a nominal input voltage of +24 VDC and has a typical current consumption of 0.25 A (250 mA). Power is delivered via dedicated Faston push-on connectors located on the board.

Q: Do you supply brand-new, original parts or second-hand refurbished items?

A: Our stock consists of Original New items; all products undergo quality inspection to ensure they are fully functional.

Q: What guarantees are included with the shipment?
A: All items in stock are tested by engineers, packed in professional ESD packaging, and shipped via express logistics with a global delivery time of 24–48 hours.

Q: How long does global shipping take?
A: Stock items are typically dispatched within 24 hours. Shipments are sent via DHL or FedEx Express, taking approximately 3–5 days to reach Asia, 4–6 days to Europe and the Middle East, and usually arriving within a week in major industrial regions worldwide.

Q: If the model I need is not listed on the website, can I request a quote?
A: Yes. We hold over 200,000 SKUs of industrial spare parts in stock, and many long-tail models are not listed in full. You can send us an RFQ (Request for Quote) directly, and we will provide wholesale pricing promptly.

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