Description
Note: Many products are not yet listed. Please contact us for more product information. Our supply channels are constantly expanding, and we currently have 20 stable shared supply channels. Please confirm the model, product, price, and all other necessary information with customer service before placing an order. We offer new, refurbished, and used products, and prices are adjusted according to the year of the item you require.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 2N3A3110-C |
| Product Type | DCS Main Controller CPU Board |
| Platform | Toshiba TOSDIC legacy distributed control system |
| Mounting | Standard Toshiba TOSDIC rack slot installation |
| Redundancy Support | Supports hot standby dual redundant configuration |
| Backplane Interface | Toshiba proprietary control bus |
| Onboard Function | Logic execution, analog/digital I/O scanning, alarm processing, HMI data publishing |
| Operating Temperature | -25°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Humidity | 5% to 95% RH, non-condensing |
| Status Indicators | Power, run, fault, communication LED indicators |
| Application Focus | Thermal power plant boiler, turbine and auxiliary process control |
| Status | End-of-life original production, only available as spare inventory |
Product Introduction
The TOSHIBA 2N3A3110-C is a legacy main controller board built for the TOSDIC DCS platform, widely deployed in older thermal power plants across Asia. It acts as the core processing unit for the control rack, scanning connected I/O modules, executing continuous control logic, interlock protection sequences, and exchanging real-time data with operator stations and remote I/O racks.
This controller supports redundant pairing, which is standard for critical boiler and turbine control racks to avoid single-point failure. It is not a general-purpose PLC module; it only works within the TOSDIC rack ecosystem with matching backplane, power supply and I/O modules. Since original manufacturing has stopped, this part is mainly supplied for maintenance replacement and emergency outage spares.
2N3A3110-C
2N3A3110-C
2N3A3110-C
Application Scenarios & Field Experience
TOSDIC systems remain operational in many coal-fired power plants and co-generation facilities, where spare availability directly affects unit availability.
- Boiler control: Combustion regulation, feedwater control, furnace pressure interlock and burner management logic.
- Steam turbine control: Speed monitoring, governor control, lube oil and trip permissive logic.
- Auxiliary plant control: Circulating water pumps, fans, ash handling and chemical water treatment control.
- Plant alarm and sequence of event recording: Time-stamped alarm capture and event sequencing.
Field note: A cogeneration plant encountered a controller fault on its main boiler rack, triggering frequent logic scan failures and alarm flooding. The site had a standby 2N3A3110-C spare. After replacement, the technician loaded the existing control program, verified backplane sync and redundant handover, and restored closed-loop control without an emergency shutdown.
Standard Operating Procedure (SOP) for Quality Control
- Visual & Part Verification: Confirm marking 2N3A3110-C, inspect PCB for corrosion, swollen capacitors, cracked traces and connector pin damage.
- Rack Compatibility Test: Install into a matching TOSDIC rack, apply rack power, verify power LED and run status.
- Logic & Bus Test: Download test logic, validate backplane communication with local I/O modules, check fault flag behavior.
- Redundancy Verification (if applicable): Test standby switchover function for dual redundant racks.
- Firmware Revision Check: Match onboard firmware version to the site existing controller revision to avoid program compatibility issues.
- ESD Packaging: Static shielding bag, custom foam insert, rigid carton with ESD warning labels.
Frequently Asked Questions (FAQ)
Q1: Can this 2N3A3110-C be used with Toshiba Unified Controller V series or other newer Toshiba controllers? A: No. It is exclusive to the legacy TOSDIC DCS platform and cannot be mixed with newer Toshiba controller series.
Q2: Does it support hot swap? A: Hot swap is supported only when running in a redundant rack pair. If it is a single non-redundant controller, removing the card will stop all control logic and I/O scanning.
Q3: What warranty is provided? A: Standard 12-month warranty. Warranty excludes damage from overvoltage, surge, incorrect rack wiring, firmware mismatch, and corrosion from poor cabinet environment.
Q4: Is new production available? A: Toshiba has discontinued original production of this controller. Available stock is new surplus or fully tested refurbished units. Condition will be clearly stated before quotation.
Q5: Can I transfer the existing program directly to a replacement 2N3A3110-C? A: Yes, provided the firmware revision matches. If revisions differ, program conversion or firmware update may be required before online loading.
