ABB HIER464920P0001

Technical Specifications – Digital Input Variant​

Symphony Plus/direct digital-input listings state 32 channels, 24 V DC dry contact or voltage input, 18 to 30 V DC range, 1500 V AC channel-to-backplane isolation, response below 5 ms, FOB or Ethernet backplane, 0 to 60 °C, IP20, DIN/rack mounting.

Technical Specifications – Communication Variant​

AC800M/digital communication listings state dual RJ45 Gigabit Ethernet, Modbus TCP, IEC 61850 GOOSE/MMS/SV, PROFINET or EtherNet/IP by firmware, MRP/RSTP/PRP/HSR redundancy options, IEEE 1588v2 timing, 0 to 60 °C, CE/UL/IEC 61850-3 according to configuration.

Technical Specifications – Protection/Relay Variant​

UNS0017A-P/distributor relay listings state current detection and over/undercurrent protection, compact DIN or panel housing, high galvanic isolation, industrial operating range around -20 to 60 °C and IEC/EN protection-relay compliance by project.

Technical Specifications – Current Transformer Variant​

Distributor CT listings state primary current configurable up to approximately 10 to 3200 A, secondary 5 A or 1 A, insulation up to approximately 17.5 kV, 50/60 Hz, accuracy 0.2S/0.5S metering or 5P/10P protection, epoxy cast body, IEC 61869 compliance.

Function Features​

Depending on confirmed type, the module provides isolated discrete sensing, high-speed Ethernet communications, current measurement/protection or metering transformer isolation for ABB DCS, switchgear and automation systems.

Application Scenarios​

Power plants, process automation, medium-voltage switchgear, motor and generator protection, DCS I/O panels, substation/industrial Ethernet and retrofit of ABB control architectures.

Performance Parameters​

Define by confirmed variant: input latency, channel density, isolation voltage, network throughput, CT ratio accuracy or relay trip curve according to the system manual.

Material Composition​

Digital/communication versions use PCB, metal/plastic housing and gold/phosphor-bronze contacts. Relay versions use molded insulation, sensing circuitry and DIN enclosure. CT versions use cast epoxy resin, copper/aluminum windings and mounting plate or busbar window.

Structural Characteristics​

DIN/rack modular body with status LEDs, terminal block or fiber/ethernet ports, mounting feet/bracket and labeled identification according to ABB platform.

Working Principle​

Digital input converts field contact/voltage states into bus data. Communication module transfers controller I/O over Ethernet/fieldbus. Protection relay evaluates current measurements and issues trip/logic outputs. Current transformer produces proportional secondary current for metering/protection.

Installation Requirements​

Identify exact variant from nameplate and system drawing. Install on DIN rail or specified rack with proper grounding. For CT/protection versions follow switchgear safety isolation. For Ethernet versions configure addresses, redundancy and timing before connection.

Usage Precautions​

Do not interchange digital, communication, relay and CT versions using the same part number assumption. Verify firmware, ratio, trip setting, isolation rating and terminal torque. Use qualified electrical/instrument personnel and lockout/tagout for power circuits.