VIVW MORE

Description

Technical Specifications

Brand

ABB
Model

APBU-44C 64669982
Product Name

PPCS Branching and Datalogger Unit
Dimensions

225 mm × 115 mm × 45 mm
Weight

0.95 kg
Place of Origin

Sweden
HS Code

8538900000
Operating Temperature

‑20 °C to +55 °C
Storage Temperature

‑40 °C to +70 °C
Power Supply

24 VDC ±10%
Warranty

12 month
Status

new and original

Features of APBU-44C (Part No.64669982)

Serves as a PPCS branching and data-logging module dedicated to the ABB ACS800 multi-drive system

Enables high-speed optical-fiber communication compliant with PPCS and DDCS protocols

Offers abundant optical ports to realize interconnection among inverter modules, RDCU units and personal computers

Integrated onboard data logger captures real-time operational data to facilitate fault diagnosis and event traceback

Accepts 24 V DC power input and supports dual redundant power supply for enhanced operational reliability

Features RS485 communication interface running Modbus protocol for external data retrieval

DDCS node address configurable via DIP switches

Back-up battery fitted to retain historical log records in the event of power failure

Built-in over-current protection together with signal isolation capability

DIN-rail mounting design for convenient installation inside control cabinets

IP20 ingress protection, intended solely for indoor cabinet-mounted deployment

Fan-less passive natural convection cooling solution

Excellent electromagnetic interference resistance adapted to harsh industrial conditions

CE and RoHS certification compliance

Protective earth terminal provided for dependable system grounding

APBU-44C 64669982 .jpg

Installation Precautions for APBU-44C (Part No.64669982)

Disconnect the complete power supply prior to all installation, wiring and disassembly work. Follow lockout-tagout protocols to eliminate accidental power-on risks.

Electrostatic protection: Put on an anti-static wrist strap before contacting circuit boards and optical ports. Direct physical contact with electronic components shall be avoided to prevent ESD-induced damage.

DIN-rail mounting: Make certain the 35 mm standard DIN-rail is securely fastened. Confirm full engagement of module latches after installation; insecure mounting may trigger intermittent communication errors.

Optical fibre operation: Fibre cables must not be bent under the specified minimum bending radius. Never touch the end faces of fibre connectors. Fit protective caps on unoccupied optical ports. Implement TX-RX cross-connection between the APBU-44C and its matched PPCS equipment.

APBU-44C 64669982 .jpg

24 V DC power wiring: Observe polarity specifications rigorously. Dual redundant power supply is offered as an optional solution. Do not share the power loop with highly inductive loads.

DIP-switch configuration: Set the DDCS node address in compliance with system topology before power-up. An incorrect address will give rise to PPCS communication malfunction.

Earthing: Firmly connect the protective earth terminal to the cabinet PE busbar. Improper earthing may result in electromagnetic interference and signal anomalies.

Cabinet arrangement: Reserve adequate separation distance from contactors, circuit breakers and high-power motor cables for EMI suppression. Preserve space for natural air ventilation.

Battery switch operation: Activate the memory backup battery DIP-switch only once all wiring work is finished. This function safeguards historical log data against power-failure loss.

Pre-energizing inspection checklist:

Inspect cross-connection status of all optical TX-RX links

Validate 24 V DC wiring polarity

Double-check DIP-switch node address

Examine continuity of PE earthing connections

APBU-44C 64669982.jpg