Order No: HESG324015R1, HESG448230R1

The 216EA61b is a Eurocard‑format plug‑in analogue input processing unit for ABB REG216 generator‑transformer numerical protection‑control system. It receives conditioned analogue measuring signals from 216GW61 instrument transformer modules, performs high‑speed A/D conversion, sampling and pre‑processing for current, voltage and auxiliary analogue quantities. Converted digital measurement data is transmitted to the main CPU via the B448C parallel back‑plane bus for protection algorithm calculation, metering and supervision. On‑board self‑diagnosis monitors power supply, A/D circuit and internal hardware faults. It is an essential measurement front‑end unit for generator and main‑transformer protection cabinets in power plants. Not hot‑swappable.

‑ Power Supply: Powered by REG216 system back‑plane bus (5 VDC, 24 VDC)

‑ Power Consumption: ≤ 10 W

‑ Mechanical Structure: 6U Eurocard rack‑mount plug‑in board, metal front panel, back‑plane parallel bus connector

‑ On‑board Resources: Multi‑channel analogue signal conditioning, high‑resolution A/D converter, 80C186‑based pre‑processing logic, EPROM for firmware, RAM for runtime data, EEPROM for calibration parameters, B448C parallel back‑plane bus interface

‑ Communication Interface: Internal B448C parallel back‑plane bus, no external communication port

‑ Galvanic Isolation: Analogue input circuits are electrically isolated from system internal bus

‑ Interfaces: Front‑panel analogue signal connector, back‑plane system bus connector

‑ Status LED Indicators: Power, Run, Module Fault LEDs

‑ Weight: Approx 0.46 kg

‑ Receives scaled analogue measurement signals from 216GW61 input transformer modules, supports up to 24 analogue input channels (works with maximum two pieces of 216GW61).

‑ Executes high‑speed synchronous sampling and analogue‑to‑digital conversion for AC current, AC voltage and auxiliary DC analogue signals.

‑ Performs pre‑processing of sampled data, delivers digital measurement values to system CPU over B448C parallel bus for protection logic, metering and monitoring.

‑ Stores factory calibration and offset parameters inside on‑board EEPROM.

‑ Comprehensive hardware self‑diagnosis: detects power supply abnormality, A/D conversion error, firmware check‑sum error and internal circuit failure, reports fault status to main CPU.

‑ All sampling, filter and calibration parameters are configured by upper‑level system software; no local keypad operation.

‑ Cannot operate independently without REG216 rack back‑plane, CPU unit and matching 216GW61 transformer modules. Cannot be directly hardware interchanged with other REG216 I/O modules. HESG324015R1 and HESG448230R1 are related part‑number variants for this same unit.

‑ Continuously monitors analogue input channels, power supply, A/D conversion and module internal hardware faults. Detected faults activate fault LED and send fault word to system CPU.

‑ No local numerical display; measured values and fault codes are read via upper‑level HMI workstation.

‑ Module hardware failure will cause total loss of analogue measurement acquisition. Protection functions based on current‑voltage quantities cannot operate normally, bringing severe safety risks for generator‑transformer set.

‑ Back‑plane connector: Connect to B448C parallel back‑plane bus for data exchange with CPU and other plug‑in modules.

‑ Front‑panel field connector: Receive conditioned analogue signals from 216GW61 instrument transformer modules.

‑ Mounting: Plug‑in installation inside REG216 system rack

‑ Operating Temperature: 0 °C ~ +60 °C

‑ Storage Temperature: −40 °C ~ +85 °C

‑ Relative Humidity: 5‑95 %RH, non‑condensing

‑ Protection Class: IP20 (inside cabinet)

‑ Power off the whole rack before inserting or removing the module. Use shielded cables for analogue signal wiring to reduce electromagnetic interference.

‑ For spare‑part replacement: Verify full part number HESG324015R1 or HESG448230R1. After replacement, confirm back‑plane bus identification, complete module calibration verification, check analogue sampling accuracy and self‑diagnosis fault‑reporting function.

‑ Module hardware fault will result in loss of all analogue measurement data, which disables core generator‑transformer protection functions.

Generator and main‑transformer protection cabinets in thermal / hydro power plants; ABB REG216 numerical generator‑transformer protection‑control system; industrial spare‑part replacement.