Description
The ABB 216AB61 is a high-density analog input module designed for the Advant Controller 400 series, delivering precision signal acquisition in demanding industrial environments. This 16-channel module supports configurable voltage, current, and resistance inputs with ±0.05% accuracy for critical process monitoring. Engineered with galvanic isolation (1500 VDC channel-to-channel), the 216AB61 eliminates ground loops while withstanding electromagnetic interference in power generation and petrochemical applications. Its hot-swappable design enables maintenance without system shutdown, and integrated diagnostics provide real-time fault detection for open wires or signal drift. The ABB 216AB61 operates at -25°C to +70°C with 95% humidity tolerance, featuring DIN-rail mounting for flexible cabinet integration. With seamless compatibility across ABB’s Advant OCS ecosystem, this module ensures reliable data acquisition for safety instrumented systems and closed-loop control.

216AB61 ABB
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | 216AB61 |
| Manufacturer | ABB |
| Product Type | Analog Input Module |
| Channels | 16 (Isolated) |
| Input Types | 0-10V, 0-20mA, 4-20mA, RTD (Pt100), Thermocouple (J/K) |
| Accuracy | ±0.05% Full Scale |
| Resolution | 16-bit |
| Update Rate | 20 ms (per channel) |
| Isolation | 1500 VDC (Channel-to-Bus) |
| Common Mode Rejection | >120 dB @ 50/60 Hz |
| Operating Temperature | -25°C to +70°C |
| Power Consumption | 1.8W @ 24VDC |
| Hazardous Certification | ATEX Cat 3 / IECEx Zone 2 |
| Dimensions | 120 x 110 x 65 mm (W x H x D) |
| Connection | Removable screw terminal |
| MTBF | >500,000 hours |
Main Features and Advantages
Signal Integrity Excellence: Automatic cold-junction compensation for thermocouples and 3-wire RTD lead resistance cancellation ensure laboratory-grade accuracy in field conditions.
Intelligent Diagnostics: Continuous channel health monitoring detects open circuits, under-range signals, and sensor degradation – triggering alerts in ABB’s Advant® Controller software.
Robust Electrical Design: Surge protection (IEC 61000-4-5) and RFI filtering (100 V/m) prevent false readings in substations or near VFDs. Dual-wire inputs accept intrinsically safe sensors without barriers.
Operational Flexibility: Mix input types per channel via software configuration. Selectable 50/60 Hz noise rejection optimizes performance for regional power grids.
Hot-Swap Capability: Tool-less latch mechanism allows replacement without rebooting the controller, minimizing downtime in continuous processes.
Application Field
The ABB 216AB61 excels in precision measurement applications across critical industries. In power plants, it monitors turbine bearing temperatures and generator cooling water flow with SIL 2 compliance. Petrochemical facilities deploy it for reactor pressure and distillation column temperature monitoring.
For pharmaceutical manufacturing, the module tracks bioreactor pH and dissolved oxygen in GMP environments. Water treatment plants utilize its RTD inputs for chlorine injection temperature control. In metals processing, the 216AB61 withstands electromagnetic noise from arc furnaces while acquiring pyrometer data. Offshore platforms leverage its ATEX certification for hazardous zone tank level monitoring. Unlike standard modules, it maintains accuracy during voltage transients up to 2kV.

216AB61 ABB
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