Description
ABB 216AB61 HESG324013R0100
ABB 216AB61 (Order No.: HESG324013R0100) is an industrial-grade mixed I/O module, belonging to the ABB Advant Controller series and supporting the REG216 digital generator protection system.Unlike the pure output modules 216NG62A and 216VC62a, as well as the integrated optocoupler/trip module 216GD61a, its key advantage lies in the all-in-one design of analog input + digital output.It integrates 16-channel analog signal acquisition and 8-channel digital switching output, specially designed for industrial automation control systems and power equipment protection applications.It provides an integrated solution for signal acquisition and actuation control in heavy industries such as power, metallurgy, and chemical engineering, eliminating the need for separate input/output modules and improving system integration efficiency.
I. Product Positioning
ABB 216AB61 (Order No.: HESG324013R0100) is an industrial-grade mixed I/O module, mainly used in ABB Advant Controller series control systems, REG216 digital generator protection systems, and various industrial automation control scenarios.It undertakes the dual critical functions of 16-channel analog signal acquisition (current, voltage, temperature, etc.) and 8-channel digital output (switching actuation), enabling coordinated operation of on-site analog parameter monitoring, data feedback, and digital switching control.It connects sensors and actuators to form a complete control closed-loop.
Featuring a modular mixed-function design, the module is seamlessly compatible with ABB REG216 protection systems, DCS, and PLC equipment.Compared with single-function modules, it integrates both analog input and digital output, greatly reducing the number of modules in the control cabinet, saving installation space, and simplifying system wiring.It provides a highly reliable, strongly isolated, high-precision mixed I/O interface solution for industrial sites, ensuring accurate signal acquisition and stable actuation response of the control system.

II. Technical Parameters
| Item | Specification |
|---|
| Type | 216AB61 |
| Order No. / Material Code | HESG324013R0100 |
| Module Type | Industrial-grade mixed I/O module (16 AI + 8 DO), companion component for REG216 system |
| Analog Input Channels | 16 channels, differential input, supports multiple signal types, compatible with various industrial sensors |
| Analog Input Signal Types | Standard: 0–10V DC, 4–20mA DC; optional: thermocouple (K/J), RTD (PT100) |
| Analog Input Accuracy | ±0.1% FS (Full Scale), high-precision acquisition ensuring data accuracy |
| Digital Output Channels | 8 channels, relay output, normally open contacts, for switching actuation control |
| Digital Output Contact Rating | Per channel: 2A @ 30V DC / 250V AC (resistive load) |
| Electrical Isolation | Full galvanic isolation between AI channels, DO channels, and between AI and DO; isolation voltage ≥ 2000Vrms, effectively blocking interference |
| Supply Voltage | 24V DC (industrial standard), voltage tolerance ±10%, with overvoltage and overcurrent protection |
| Operating Temperature | -20℃ ~ +60℃, suitable for harsh industrial temperature environments |
| Storage Temperature | -40℃ ~ +85℃ |
| Protection Class | IP20 (for mounting in control cabinets, dustproof and touch-proof) |
| Dimensions (approx.) | 189 × 156 × 46 mm, compact modular design, saves installation space |
| Weight (approx.) | 2.2 kg, lightweight for easy installation and maintenance |
| Terminal Type | Spring-loaded terminals, convenient wiring, reliable contact, anti-loosening |
| Communication Interface | Standard industrial bus interface, supports data exchange with ABB DCS, PLC and REG216 systems, real-time data upload and command reception |
| Key Features | Mixed I/O integration, high-precision analog acquisition, strong galvanic isolation, wide voltage adaptation, modular design, easy maintenance, high reliability |

III. Core Functions
1. 16-Channel High-Precision Analog Input Acquisition
Integrates 16 differential analog input channels, supporting standard signals 0–10V DC and 4–20mA DC.Thermocouple (K/J) and RTD (PT100) acquisition are available as options to match various industrial sensors for temperature, pressure, flow, current, voltage, etc.Input accuracy reaches ±0.1% FS, enabling accurate acquisition of key on-site analog parameters.After internal signal conditioning and filtering, acquired data are uploaded to the control system in real time via industrial bus, providing precise data support for control logic calculation.Suitable for high-accuracy applications such as generator protection and equipment operating parameter monitoring.
2. 8-Channel Relay Digital Output Control
Equipped with 8 normally open relay digital output channels.Each channel supports 2A @ 30V DC / 250V AC (resistive load) and can directly drive on-site actuators including contactors, solenoid valves, indicator lamps, and alarm circuits.It implements switching control, equipment start/stop, alarm triggering, and other functions without additional intermediate relays, simplifying system design and reducing cost.Fast response and reliable operation meet general on-site switching actuation requirements.
3. Full Galvanic Isolation & Anti-Interference Design
Full galvanic isolation is provided between analog input channels, digital output channels, and between input and output circuits, with isolation voltage ≥ 2000Vrms.It effectively blocks interference such as ground potential difference, electromagnetic interference, and surge voltage in industrial environments, preventing signal crosstalk, data distortion, and module burnout, protecting core hardware of the control system.Optimized internal filtering circuits and multi-layer PCB design further improve anti-interference performance, suitable for power, metallurgical, and chemical sites with strong electromagnetic interference.
4. Wide Compatibility & High-Precision Assurance
Analog inputs support multiple signal types and flexibly adapt to different industrial sensors without extra signal conversion modules, offering strong universality.±0.1% FS accuracy ensures reliable monitoring of on-site parameters, especially critical for precise current and voltage acquisition in generator protection.Digital output contact rating satisfies most industrial actuators, covering various switching control scenarios and realizing integrated coordination between acquisition and control.
5. Industrial-Grade Reliability & Redundancy Adaptation
Supplied by 24V DC (industrial standard) with voltage tolerance ±10% and complete overvoltage/overcurrent protection, effectively resisting damage from power anomalies and extending service life.Wide operating temperature range (-20℃ ~ +60℃) and IP20 protection allow stable long-term operation in harsh industrial environments.Supports redundancy configuration and can work with same-series modules to improve system reliability and avoid control interruption caused by single-point failure.
6. Modular Integration & Convenient Operation & Maintenance
Compact modular design integrates analog input and digital output in one unit.Compared with separate input/output modules, it reduces component count, saves cabinet space, and simplifies wiring and commissioning.Spring-loaded terminals enable convenient wiring and reliable connection, easing later maintenance and troubleshooting.Seamlessly compatible with ABB Advant Controller series, REG216 digital generator protection system, and mainstream DCS/PLC equipment, allowing direct integration into existing systems with low upgrade cost and high efficiency.

IV. Applications
As a classic mixed I/O module in the ABB series, it is widely used in heavy industries such as power, metallurgy, and chemical engineering thanks to its integrated “acquisition + control” advantage, especially for loops requiring simultaneous analog monitoring and digital control:
1. Power Industry (Core Application)
Generator protection systems (REG216-compatible) and main control systems in thermal power plants, hydropower stations, and substations.16 analog inputs collect key parameters such as generator stator current, rotor voltage, winding temperature, and bearing temperature.8 digital outputs control circuit breakers, excitation systems, alarm circuits, etc., achieving real-time parameter monitoring and fast fault response to ensure safe and stable operation of generator units.
2. Metallurgy Industry
Control loops for blast furnaces and converters in ferrous and non-ferrous metal smelting workshops.Acquires analog parameters including furnace temperature, pressure, and material level; outputs control signals to drive valves, fans, pumps, and other actuators.Realizes accurate monitoring and control of the smelting process, resisting strong electromagnetic interference and temperature fluctuations on-site to ensure stable production.
3. Chemical Industry
Reactor control and material handling systems in chemical production workshops.Collects analog signals such as reaction temperature, pressure, and material concentration; controls actuator start/stop and valve position switching.Implements automated monitoring and control of the production process. Strong isolation design effectively prevents failure risks caused by corrosion and electromagnetic interference in chemical plants.
4. Other Industrial Scenarios
Water quality parameter monitoring (turbidity, dissolved oxygen) and pump/valve control in water treatment plants;operating parameter monitoring and safety interlock control for large mining equipment;temperature, pressure monitoring and equipment start/stop control in large manufacturing production lines.The integrated design simplifies system architecture and improves operation and maintenance efficiency.
V. Product Advantages
- Mixed I/O integration, higher efficiency: Combines 16 AI and 8 DO in one module, replacing separate I/O modules, reducing wiring and cabinet space, improving integration and lowering system cost.
- High-precision acquisition, reliable data: ±0.1% FS analog accuracy and multi-signal support ensure accurate industrial parameter measurement for critical monitoring applications.
- Strong isolation & anti-interference, safe and stable: 2000Vrms full galvanic isolation with optimized filtering blocks interference and surges, protecting core hardware in complex industrial environments.
- Wide compatibility, high versatility: Analog inputs match various sensors; DOs drive most industrial actuators; fully compatible with ABB REG216, DCS and mainstream PLCs for cross-industry applications.
- Easy maintenance, controllable cost: Spring-loaded terminals and modular design simplify installation, replacement and overhaul; wide temperature and power protection extend service life.
- Coordinated control, efficient closed-loop: Synchronized analog acquisition and digital output form a complete control loop without extra interface modules, improving response speed and system stability.
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