ALSTOM VIIB16-C-12011-105-00 – 16‑Channel Binary Input Module for Alstom Control Racks

The ALSTOM VIIB16-C-12011-105-00 is a 16‑point binary input board designed for legacy Alstom control systems. From my experience, it’s typically used to bring dry/wet contact status signals into the rack—things like limit switches, pressure switches, relay contacts, and permissives in power and process applications. You might notice that the part code suggests a “B16” input density, and that lines up with how it’s deployed in the field: dense, reliable contact monitoring with straightforward diagnostics for maintenance.

Our Order Placement Process and Guarantees

• Warranty: 365 days
• Delivery: 1 week if in stock; no more than one month at the latest
• Payment: 50% advance payment; full payment before delivery
• Express options: FedEx, UPS, DHL

Key Features

• 16-channel binary inputs – Suitable for consolidating field contacts into a single rack slot; helpful where panel space is tight.
• Wet or dry contact compatibility – In many cases, the board handles 24 VDC “wet” signals or dry contacts depending on wiring practice.
• Backplane-powered – Draws low power from the control rack backplane; no separate PSU required for the board itself.
• Status LEDs and onboard diagnostics – Typically allows quick channel checks during commissioning and troubleshooting.
• Form-fit replacement – Designed to drop into existing Alstom racks, minimizing downtime for MRO teams.
• Industrial EMC design – Appears to be built for noisy environments, helping reduce nuisance trips from electrical interference.

Technical Specifications

Application Fields

This board is commonly deployed wherever Alstom legacy control racks are still running. Typical sites include power generation (steam/gas turbines, balance‑of‑plant), utilities and substations, and process machinery where hardwired interlocks are preferred. A maintenance engineer might use it to marshal:

• Motor/valve permissives and limit switches
• Pressure, level, and temperature switch contacts
• Trip circuits and status from protection relays
• Panel pushbuttons and selector switches

Advantages & Value

• Fast replacement – Form/fit compatibility usually means no rewiring or software changes, saving outage time.
• Lower risk – Staying within the original rack ecosystem preserves validated safety logic and IO mapping.
• Lifecycle efficiency – Extends service life of existing Alstom controls without a full system migration.
• Technical backing – We help verify revision compatibility and field wiring assumptions before shipment.

Installation & Maintenance

• Cabinet & environment – Install in a clean, dry control cabinet with adequate ventilation. Keep away from high‑current cabling to reduce EMI.
• Rack & grounding – Use the matching Alstom rack/backplane; verify chassis ground and shield terminations are consistent across the panel.
• Wiring practice – For 24 VDC wet contacts, group commons and use ferrules. For dry contacts, confirm the board’s biasing method (source/sink) before field connection.
• ESD handling – Treat as an ESD‑sensitive PCB; insert and remove with power down unless the manufacturer explicitly permits hot‑swap.
• Routine checks – Periodically verify channel status with LEDs or test points, clean dust with dry air, and re‑torque terminal screws. Document firmware/hardware revisions if applicable.
• Commissioning tip – Map each input to the control logic and simulate state changes to confirm debouncing and alarm behavior.

Quality & Certifications

• Typically manufactured under ISO 9001 quality systems
• CE conformity expected for industrial EMC in most cases
• RoHS status may depend on hardware revision and production year
• Warranty: 12 months (365 days) from delivery

Related/Supporting Components

To streamline installation, teams typically pair this module with:

• Matching Alstom I/O rack/backplane and front terminal connector
• 24 VDC field power distribution with fused commons for wet contacts
• Shielded multi-core signal cable and labeled ferrules for marshaling

One thing I appreciate is how this board fits upgrade paths—if you’re phasing equipment, it lets you stabilize the I/O side first, then address controllers later. If you want, share your rack part number or a snapshot of the terminal layout; we can double‑check the VIIB16-C-12011-105-00 revision against your wiring and confirm the delivery window.