Product Introduction

Model Interpretation

• HESG: ABB internal part number prefix for electronic assemblies and backplanes.

• 216877: Unique design code for the 216‑series power connection backplane.

• /K: Revision/configuration suffix, indicating hardware version and compatibility with specific system racks.

• Full system designation: HESG216877/K + HESG441635R1 + 216NG63A (redundant power assembly).

Technical Parameters

• Input voltage: 85–264 VAC, 47–63 Hz (wide‑range AC input).

• Output voltage: 24 VDC ±2%.

• Continuous output current: 10 A.

• Redundancy mode: N+1 parallel, automatic current sharing.

• Operating temperature: −25 °C to +70 °C.

• Storage temperature: −40 °C to +70 °C.

• Protection class: IP20 (module), IP00 (backplane).

• Mounting: 19‑inch rack or DIN rail via base.

• Certification: CE, UL 61010‑1, IEC 61326.

Interface and Communication Configuration

• Backplane edge connector: Dedicated interface for 216NG63A power modules and HESG441635R1 base, providing power distribution and signal interconnection.

• System bus interface: Connects to AC 800M controller backplane for power status monitoring and fault reporting.

• Terminals: Screw terminals for AC input, DC output, and ground wiring.

• Isolation: Galvanic isolation between AC input, DC output, and system ground.

• Status LEDs: Green (normal), red (fault/overload).

Core Functions

• Redundant power distribution: Seamless switching between parallel power modules; hot‑swap support for replacement without shutdown.

• Voltage regulation and filtering: Maintains stable 24 VDC output with low ripple, protecting sensitive control electronics.

• Overload/short‑circuit protection: Shuts down faulty modules automatically to prevent system damage.

• System monitoring: Reports power supply status, voltage, current, and faults to the controller via the backplane.

• Backplane interconnection: Provides mechanical and electrical integration for the redundant power system in standard racks.

Application Scenarios

• Power generation: Power plant DCS, generator protection systems (REG216), and critical control loops.

• Process industries: Chemical, oil and gas, pulp and paper, and water treatment plants requiring high availability.

• Industrial automation: ABB AC 800M PLC/DCS systems, remote I/O stations (CI854A), and critical manufacturing lines.

• System retrofitting: Upgrading existing ABB Advant OCS/Procontrol systems with redundant power for enhanced reliability.

Operation and Maintenance Instructions

• Install in a standard 19‑inch rack or DIN rail in a dry, well‑ventilated cabinet; ensure reliable grounding.

• Use shielded cables for AC input and DC output; separate power cables from signal cables.

• Before power‑on, verify all connections and set redundancy parameters via the controller software.

• Inspect terminals, connectors, and cables periodically for looseness, corrosion, or damage.

• Keep the backplane clean and free of dust and moisture; avoid exposure to corrosive gases.

• When replacing power modules, use hot‑swap capability; no system shutdown required.

• Perform regular firmware updates and status checks per ABB guidelines.