Description
ABB LDSYN-101 Synchronization Voltage Measurement Module
Technical Specifications
- Product Model: LDSYN-101 (3BHE005555R0101)
- Brand: ABB
- Warranty: One Year
- Input Voltage: 24 VDC (18–32 VDC), reverse polarity protection
- Operating Temperature: -40°C ~ +70°C
- Storage Temperature: -45°C ~ +85°C
- Response Time: ≤8 ms signal acquisition latency
- Protection Class: IP20 (Rack-mounted electronic assembly)
- Accuracy Class: ±0.15% Full Scale
- Output Frequency: 0–1 kHz sampling bandwidth
- Rated Current Range: 0–20 mA analog signal range
- Communication Interface: Backplane bus + RS485
- Supported Protocols: ABB Advant MasterBus, Modbus RTU
- Overload Capacity: Electronic short-circuit protection; withstand 150% rated input transient
- Dimensions: 160 mm × 160 mm × 120 mm
Product Overview
The LDSYN-101 is a dedicated synchronization and voltage signal conditioning module built for ABB Advant distributed control platforms. It acquires multi-channel AC voltage signals, performs precise phase angle measurement, and delivers calibrated digital and analog outputs for grid synchronization and power equipment control. This hardware eliminates phase measurement drift and signal distortion caused by electromagnetic interference on long field cables. Power plant control engineers, system integrators and maintenance teams operating generator and transmission assets rely on this module to automate paralleling sequences without external signal conversion equipment. Built-in circuit diagnostics continuously monitor wiring faults and signal amplitude anomalies to reduce unplanned asset outages.
Application Scenarios
- Thermal Power Plants – Generator Synchronization: The module measures generator terminal voltage and grid voltage phase difference. Accurate phase sampling enables safe automatic paralleling of turbo-generator units, preventing switching surges that damage rotating machinery.
- Hydropower Facilities – Unit Paralleling Control: Deployed within DCS racks to monitor multiple hydro-generator outputs. Fast response maintains stable synchronization during fluctuating water flow and variable load demand on power networks.
- Industrial Cogeneration Sites – Distributed Power Interconnection: Processes voltage signals from on-site gas turbines and the public utility grid. Reliable phase detection safeguards island-mode operation and controlled reconnection to the main power supply.
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