Description
ABB 216AB61 HESG324013R101 | Binary Output Unit | REG 216 Generator Protection
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | ABB |
| Model | 216AB61 |
| Order Code | HESG324013R101 |
| Product Family | REG 216 / RE.216 |
| Product Type | Binary Output Unit |
| Output Channels | 32 |
| Primary Function | Control of auxiliary output relays |
| Output Protection | Short-circuit proof |
| Status Indication | Front-panel LEDs |
| Rack Requirement | One rack division |
| Internal Interface | B448C parallel bus |
| Associated Relay Unit | 216GA61 output relay unit |
| Application | Generator protection / electrical protection |
ABB documentation identifies 216AB61 as the Binary O/P unit and describes 32 outputs for controlling the relays of the output auxiliary relay assembly.
Product Introduction
The is a Binary Output Unit used in the ABB REG 216 digital generator protection system. Its job is to take output commands generated by the 216VC62A processing unit through the B448C parallel bus and provide the corresponding signaling outputs to the auxiliary relay assembly. This places the module on the protection system’s command/output path rather than in the measurement or processor section.
In the documented RE.216 architecture, the 216AB61 works with the 216GA61 output relay unit, whose auxiliary relay contacts are potential-free and wired onward to external signaling and control circuits. The 216AB61 therefore provides the electronic interface between protection logic and the physical relay layer. ABB documentation specifies 32 output channels, short-circuit protection, front-panel LED indication, and a one-rack-division space requirement.
216AB61 HESG324013R101
Application Scenarios & Field Pitfalls — The Engineer’s Perspective
Engineering Pain Point
When a REG 216 protection system reports a missing alarm, blocking signal, or relay command, it is tempting to replace the output card immediately. The actual fault can be anywhere along the chain: protection logic in the processor, the B448C bus, the 216AB61 output unit, the relay assembly, or the external wiring. Understanding the 216AB61’s exact position in that chain makes troubleshooting much faster.
Typical Applications
- Generator protection: Sends configured protection signaling commands toward external relay circuits.
- Transformer and electrical protection: Supports output signaling associated with configured RE.216 protection functions.
- Alarm and status signaling: Drives auxiliary relays used for external annunciation and control.
- Legacy REG 216 maintenance: Replacement of failed or degraded binary output hardware.
Technical Pitfalls
1. Do not classify it as a power module.
Some secondary listings incorrectly describe as a power-conversion module. ABB’s RE.216 documentation explicitly identifies 216AB61 as the Binary O/P unit.
2. Do not confuse it with 216DB61.
The 216DB61 is the Binary Input and Tripping Unit. The 216AB61 is the output unit used for signaling through the output auxiliary relay assembly. They occupy different positions in the protection architecture.
3. The 32 outputs are not 32 direct high-power plant outputs.
The documented architecture routes 216AB61 outputs to the 216GA61 auxiliary relay assembly. The relay contacts then provide the potential-free external interface. Do not interpret the 32-channel figure as 32 independently powered field-load outputs.
4. Check the complete suffix.
The ordering information for 216AB61 includes multiple variants, including HESG324013R100, , /B, and /D. A replacement should match the installed ordering code and system documentation rather than relying only on the base model number.
5. Inspect the relay layer before condemning the card.
If a protection command appears correctly in the processor but the external relay does not operate, check the 216AB61 status LEDs, rack connections, B448C bus, 216GA61 relay assembly, and associated wiring.
6. Verify configuration after replacement.
The 216VC62A processor determines the allocation of protection signals and tripping commands to the output channels. A physically correct replacement does not eliminate the need to verify the installed system configuration.
Related Products
- ABB 216VC62A HESG324442R112/F — Processing unit that executes the configured protection functions and determines output assignments.
- ABB 216EA61B HESG448230R1/G — Analog input unit used to digitize measured protection quantities.
- ABB 216DB61 — Binary input and tripping unit for external binary signals and trip functions.
- ABB 216GA61 — Output auxiliary relay assembly controlled through the 216AB61.
- ABB 216GE61 — Input relay assembly used for external binary signals.
- ABB 216MB66 — Equipment rack used to house RE.216 electronic units.
- ABB 216NG61 / 216NG62 / 216NG63 — Auxiliary DC/DC supply units for the RE.216 electronics.
- ABB REG 216 — Digital generator protection platform incorporating the 216-series processing and I/O hardware.
Procurement Note
For , the safest replacement procedure is to match the complete part number, revision suffix, rack position, 216VC62A processor configuration, and associated 216GA61 relay assembly. For a protection-system spare, do not approve the card based only on the generic descriptions found in reseller catalogs. The documented RE.216 architecture clearly identifies this unit as the 32-output Binary Output Unit.
