Description
- Model: MT-91-ARC FP A
- Brand: ABB Procontic
- Part Type: MT91 operator panel / HMI
- Product Family: Procontic CS31
- Display: 12.1-inch TFT color LCD
- Power Supply: 100–240 VAC
- Interfaces: 2 serial ports, 2 USB ports, Ethernet
Technical Introduction
The ABB MT-91-ARC FP A is an MT91 operator panel from the ABB Procontic CS31 family, intended to provide an operator interface for industrial control systems. Available technical references identify the unit as a 12.1-inch TFT color LCD operator panel with serial, USB, and Ethernet connectivity and a 100–240 VAC input supply.
This is a legacy HMI, so replacement work should include a check of the exact hardware and software revisions. A field listing for the MT-91-ARC FP A records hardware and software article numbers, an RS-422/485 interface, and German manufacture, illustrating why the complete nameplate should be captured before sourcing a replacement.
Engineer’s Takeaway: For a legacy HMI replacement, match the complete MT-91-ARC FP A designation and installed revision, then verify the panel’s communication interface and application software before commissioning.
Core Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | ABB Procontic |
| Model | MT91 |
| Part Number | MT-91-ARC FP A |
| Product Type | Operator panel / HMI |
| Product Family | Procontic CS31 |
| Display | 12.1-inch TFT color LCD |
| Resolution | 800 × 600 (SVGA) |
| Display Colors | 262K |
| Touch Technology | Resistive touchscreen |
| Serial Interfaces | 2 serial ports; field references identify RS-422/485 capability |
| USB Interfaces | 2 |
| Ethernet | 1 Ethernet interface |
| Power Supply | 100–240 VAC |
| Reported Weight | Approximately 2.2–2.63 kg depending on source/configuration |
| Example Hardware Article No. | 200010450702 |
| Example Software Article No. | 200110401700 |
| Example Hardware Revision | HW revision should be verified from the installed unit |
| Example Software Revision | One field listing reports Rev. 1.25; verify the actual unit |
| Country of Manufacture | Germany reported on field inventory |
ABB MT-91-ARC FP A
The display, interface, and power specifications are supported by technical product references; hardware/software article numbers and weight vary by the individual unit and source, so the actual nameplate should control procurement records.
Field Engineer’s Tech Notes
1. Hardware revision and software revision are separate procurement details.
A replacement panel can have the same MT-91-ARC FP A designation but a different hardware or software article number. Record both before replacement, particularly when supporting an older CS31 installation. One documented unit carries separate hardware and software article numbers and a software revision of 1.25
2. Verify the fieldbus before moving to a replacement HMI.
The MT91 platform provides serial connectivity, and field documentation identifies RS-422/485 on an actual unit. Check the PLC/HMI communications cable, connector pinout, protocol settings, and application configuration before assuming Ethernet can replace the existing serial link.
Adaptive QA & Testing Protocol
Incoming inspection starts with verification of the MT-91-ARC FP A nameplate, hardware/software article numbers, revision markings, display condition, touchscreen surface, keypad or operator controls where fitted, connectors, and housing.
Functional testing should be performed as an HMI rather than as a generic display. The panel is powered under controlled conditions, the LCD and touchscreen are checked across the usable display area, and each communication interface is inspected. Where the customer’s test environment is available, the HMI is connected to the appropriate control system to verify startup behavior, communications, screen navigation, alarm/status display, and operator input response.
For a refurbished unit, stored configuration or application software should be checked against the customer’s required version before shipment.
Inspection photographs, test reports, and available test videos can be provided upon request.
Buyer’s FAQ
What is ABB MT-91-ARC FP A?
It is an ABB Procontic MT91 operator panel/HMI in the Procontic CS31 family. Technical references identify a 12.1-inch TFT display, 800 × 600 resolution, serial interfaces, USB, Ethernet, and 100–240 VAC input.
Can this panel replace another MT91?
Compatibility should be checked against the complete hardware/software article numbers, revision, PLC interface, communication protocol, and application software. The model designation alone is not enough for a controlled replacement.
Is MT-91-ARC FP A available new or refurbished?
This is a legacy operator panel and is commonly encountered in used or refurbished inventory. A current field listing, for example, identifies a used unit, while other automation suppliers offer used/refurbished stock. Confirm the actual condition of the unit being quoted.
What are the lead time and warranty?
These depend on available inventory and condition. The quotation should specify stock status, actual hardware/software revision, dispatch lead time, warranty period, and whether the panl has undergone functional testing.
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