ABB IMASI13 – 13-Channel Analog Input Module | AC800M DCS Platform
Engineering Background
The ABB IMASI13 is a high-density analog input module engineered for ABB’s AC800M Distributed Control System (DCS) platform — one of the most widely deployed process automation architectures in the power generation, oil & gas, pulp & paper, and chemical industries. Designed to interface directly with field transmitters, the IMASI13 delivers reliable, high-resolution signal acquisition in demanding industrial environments where measurement accuracy directly impacts process safety and efficiency.
Product Positioning
As a procurement engineer sourcing replacement or expansion modules for an AC800M system, the IMASI13 represents the OEM-specified solution for analog signal termination. Its 13-channel capacity reduces cabinet footprint and wiring complexity compared to lower-density alternatives, making it the preferred choice for greenfield expansions and brownfield retrofits alike. Konmask.com supplies verified OEM units with full traceability documentation available upon request.
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number / SKU | IMASI13 |
| Manufacturer | ABB |
| Module Type | Analog Input (AI) |
| Platform / Series | AC800M DCS – S800 I/O |
| Number of Channels | 13 Channels |
| Input Signal Types | 4–20 mA (current), 0–10 V (voltage), HART-compatible |
| Resolution | 16-bit ADC |
| Isolation | Channel-to-channel and channel-to-bus galvanic isolation |
| Communication Bus | S800 ModuleBus (optical) |
| Power Supply | Supplied via S800 I/O bus (no external power required) |
| Operating Temperature | 0°C to +55°C (32°F to 131°F) |
| Storage Temperature | -40°C to +70°C |
| Humidity | 5–95% RH, non-condensing |
| Protection Class | IP20 |
| Mounting | DIN rail via S800 I/O base unit (TB820 / TB840) |
| Dimensions (W×H×D) | Approx. 30 × 130 × 100 mm |
| Weight | Approx. 500 g |
| Certifications | CE, UL, ATEX (zone 2 with appropriate barrier), IEC 61131-2 |
| Country of Origin | Germany / Sweden (ABB manufacturing) |
| Firmware Compatibility | AC800M Controller firmware v5.x and above |
Proven Application Environments
- Power Generation: Boiler control, turbine governor feedback, and generator excitation monitoring loops requiring high-channel-count AI termination.
- Oil & Gas: Wellhead pressure/temperature acquisition, separator level control, and pipeline flow metering in SIL-rated architectures.
- Pulp & Paper: Digester pressure, bleach plant pH, and stock consistency measurement integrated into AC800M process cells.
- Chemical & Petrochemical: Reactor temperature profiling, distillation column differential pressure, and heat exchanger duty monitoring.
- Water & Wastewater: Multi-point flow and level acquisition for SCADA-integrated AC800M installations.
Engineering Advantages
- High Channel Density: 13 AI channels per module slot minimizes rack space and reduces per-channel installed cost versus 8-channel alternatives.
- HART Pass-Through: Supports HART protocol overlay for in-situ device diagnostics without additional multiplexers.
- Hot-Swap Capable: Modules can be replaced under power with zero process interruption when used with redundant controller configurations.
- Optical ModuleBus: Fiber-optic communication between I/O and controller eliminates ground loop interference and provides EMI immunity in electrically noisy environments.
- Integrated Diagnostics: Per-channel open-circuit, short-circuit, and out-of-range fault detection reported directly to AC800M controller event log.
- Scalable Architecture: Supports up to 12 S800 I/O modules per ModuleBus segment, enabling large-scale analog acquisition without additional hardware.
System Architecture & Signal Flow
The IMASI13 mounts onto an S800 I/O base unit (TB820 or TB840 terminal base), which provides field wiring termination and mechanical support. The module communicates with the AC800M controller via the S800 ModuleBus — an optical serial bus that supports distances up to 100 m between controller and I/O cluster. Signal flow: Field transmitter → Terminal base screw terminals → IMASI13 ADC → ModuleBus optical link → AC800M PM8xx controller → Control Builder Plus application logic.
For redundant I/O configurations, two IMASI13 modules can be paired on dual-redundant terminal bases (TB840A) with automatic switchover managed by the AC800M controller firmware, achieving IEC 61511 SIL 2 loop integrity when combined with appropriate field devices.
Sourcing & Quality Verification
- OEM Origin: All IMASI13 units supplied by Konmask.com are sourced from ABB-authorized distribution channels or decommissioned OEM installations with full service history.
- Incoming Inspection: Each unit undergoes visual inspection, label verification (ABB part number, date code, revision level), and functional power-on test prior to dispatch.
- Documentation Available: ABB factory test certificate, revision datasheet, and CE declaration of conformity available upon request for regulated industries.
- Packaging: Anti-static ESD bag + foam-lined carton. Conforms to IEC 60068-2 transport vibration requirements.
- Warranty: 12-month Konmask warranty covering manufacturing defects and functional failure under normal operating conditions.
Procurement Process
- Confirm Compatibility: Verify your AC800M controller firmware version (v5.x+) and terminal base type (TB820 / TB840 / TB840A) before ordering.
- Request Quote: Contact support@konmask.com with quantity, required delivery date, and any documentation requirements (CoC, test report).
- Lead Time: In-stock units ship within 2 business days. Ex-stock lead time for bulk orders: 5–10 business days.
- Shipping: DHL Express / FedEx International Priority available. Export documentation (commercial invoice, packing list, HS code 8537.10) provided.
- Payment: T/T bank transfer, PayPal, and trade credit terms available for qualified accounts.
Technical FAQ
Q: Is the IMASI13 compatible with AC800F or AC800PEC controllers?
A: No. The IMASI13 uses the S800 ModuleBus interface and is exclusively compatible with the AC800M controller family. AC800F uses a different I/O bus architecture.
Q: Can I mix IMASI13 with other S800 I/O modules on the same ModuleBus segment?
A: Yes. S800 I/O modules are freely mixable on the same ModuleBus segment up to the 12-module limit per segment.
Q: Does the IMASI13 support HART revision 7?
A: The IMASI13 supports HART 5/6 pass-through. HART 7 compatibility depends on AC800M firmware version — consult ABB document 3BSE036351 for firmware-specific HART support matrix.
Q: What is the maximum cable length from field transmitter to terminal base?
A: ABB recommends a maximum loop resistance of 600 Ω for 4–20 mA circuits. Actual cable length depends on conductor cross-section and transmitter compliance voltage.
Q: Can Konmask provide a functional test report for this specific unit?
A: Yes. Functional test reports are available upon request at time of order. Please specify this requirement in your purchase inquiry.
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