EMERSON VE4012S2B2 – DeltaV S‑series Electronic Marshalling I/O Module for Flexible CHARM Channels

The EMERSON VE4012S2B2 sits in the DeltaV S‑series I/O family and, in most cases, is used with Electronic Marshalling (CHARMs) to bring field signals into your control system with less rewiring and far less cabinet pain. From my experience, it’s chosen when teams want a tidy way to mix AI, AO, DI, DO—plus HART—on the same backplane while keeping hot‑swap serviceability and clear diagnostics.

Our Order Placement Process and Guarantees

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

Key Features

• Electronic Marshalling with CHARMs: Mix AI, AO, DI, and DO on the same base—channel-by-channel characterization reduces redesign work.
• HART pass‑through (when used with HART CHARMs): Makes device diagnostics and configuration accessible from the host without extra multiplexers.
• Hot‑swap serviceability: You can replace modules and CHARMs under power, typically without shutting down the whole node.
• DeltaV backplane integration: Native communication on the S‑series backplane keeps configuration straightforward and consistent.
• Compact cabinet footprint: Frees space versus traditional marshalling; you might notice cleaner wiring and faster commissioning.
• Channel diagnostics: Clear status LEDs and system alerts help maintenance spot wiring issues quickly.

Technical Specifications

One thing I appreciate is how this module keeps late project changes manageable—if a loop flips from analog to discrete, you swap the CHARM rather than re‑route the panel. A maintenance lead told us their team cut cabinet rework by “more than half” moving to this style of I/O.

Related or Supporting Products

• VE4012S2B1: Earlier hardware revision in the same family; VE4012S2B2 typically offers incremental updates or lifecycle improvements.
• CHARM AI 4–20 mA HART: For transmitter loops with device diagnostics; great when you need AMS Device Manager access.
• CHARM AO 4–20 mA HART: Analog output for valve positioners or VFD references; supports HART where applicable.
• CHARM DI 24 VDC: Discrete input for limit switches, proximity sensors, and status contacts.
• CHARM DO 24 VDC: Discrete output for solenoids, relays, and light indicators; pay attention to current limits per channel.
• S‑series Baseplate/Carrier: Required mounting hardware that provides the backplane connection and field terminations for CHARMs.

If you’re swapping a legacy marshalling panel, it appears that this VE4012S2B2 route often reduces home‑run wiring and simplifies loop checks. The exact CHARM mix will depend on your signal list—happy to map it if you share counts per type.

Installation & Maintenance

• Cabinet environment: Maintain 0–55°C ambient, non‑condensing humidity, and allow ventilation space above/below the module row.
• Grounding & shielding: Bond the backplane/cabinet ground; route shielded cables for analog/HART signals with single‑point grounding to reduce noise.
• Wiring: Follow channel polarity and power class per CHARM type; segregate DI/DO from AI/AO where practical to limit interference.
• Redundancy: Where uptime is critical, use redundant carriers/modules; the system typically supports bumpless changeover.
• Serviceability: Modules and CHARMs are hot‑swappable; use ESD protection and verify channel de‑energization where required.
• Routine care: No calibration on the base module itself; periodically clean dust, verify terminal tightness, and keep DeltaV firmware/CHARM characterization files up to date.

Quality & Certifications

• Certifications: Typically CE and UL for industrial control equipment; RoHS compliance is common in this family.
• Manufacturing system: Emerson production is generally aligned to ISO 9001 quality practices.
• Warranty: 12 months (365 days) as supplied.