The ABB LDGRB-01 (3BSE013177R1) is a specialized load distributor and control module from ABB’s legacy INFI 90 and Symphony Plus DCS ecosystem, engineered for precise power sharing and synchronization in multi-generator parallel operation systems. Primarily deployed in backup power, islanded microgrids, and data center UPS configurations, it employs advanced PID algorithms to balance active/reactive loads across up to 16 diesel, gas, or turbine generators, ensuring voltage/frequency stability within ±0.5% under dynamic conditions. Housed in a rugged DIN-rail mountable enclosure, the module interfaces via CAN bus and RS-485 for seamless integration with ABB generator controllers, paralleling gear, and SCADA oversight, while its dead-bus close logic prevents inrush currents exceeding 5% rated during auto-synchronization. Featuring dual-processor diagnostics and hot-standby failover, LDGRB-01 guarantees seamless transitions during utility outages, making it indispensable for mission-critical facilities demanding uninterrupted power.
Product Parameters
LDGRB-01 operates on a nominal 24 V DC supply (18-32 V operating range, reverse polarity protected), consuming under 5 W continuous with inrush limited to 1 A. It supports paralleling of 2-16 units via proprietary CAN bus (1 Mbps, up to 1000 m shielded twisted pair) and Modbus RTU RS-485 (9.6-115.2 kbps, 32 devices max), with galvanic isolation at 1500 Vrms bus-to-logic. Measurement capabilities encompass true RMS voltage (0-300 V AC, L-N/L-L, ±0.5% accuracy), current (0-5/1 A AC CT inputs, ±1% via external shunts), frequency (45-65 Hz, ±0.25 Hz resolution), and power (kW/kVAR/kVA, cosφ via integrated metering). Control outputs include 8 relay contacts (5 A/250 VAC resistive, form C, gold-over-silver alloy), 4 analog 4-20 mA droop/governor references (±0.25% linearity), and PWM speed bias (0-10 V). Environmental hardening suits G2/G3 corrosive atmospheres (ISA 71.04), with -25°C to +70°C operation, -40°C to +85°C storage, 95% RH non-condensing, 5 g/10-150 Hz vibration, 15 g shock (IEC 60068-2), and IP20 front/IP00 terminals. Physical footprint is 110 mm W x 100 mm H x 75 mm D at 0.6 kg; MTBF exceeds 300,000 hours (MIL-HDBK-217F). EMC per IEC 61000-6-2/4 (Level 3 surge), safety IEC 61010-1 (CAT III), and SIL 2 certified.
Datasheet Overview
Datasheet details PID droop/isochronous modes with kW sharing ±1%, kVAR ±2%, phase-match auto-sync (<200 ms settle time), and soft loading (ramp 1-60 s). Configuration via front keypad/LCD (backlit, 2×16 chars) or PC tool stores non-volatile settings (EEPROM, 10-year retention). Alarms cover over/under voltage/freq (±10% pickup), reverse kW (trip 5-30 s), kVA overload (101-150%, inverse time), and 50+ event logger (timestamped 1 s, 1000 entries). Inputs accept dry/wet contacts (threshold 8 Vdc configurable), with debounce 10-250 ms. Mechanicals specify M3 terminals (0.5-2.5 mm², 0.8 Nm torque), DIN-35 rail clips, and optional panel cutout. Firmware supports soft-start (0-100% ramp), raised neutral compensation, and genset sequencing (priority rotation). Diagnostics include self-test on boot, loop monitoring (±5% deviation alarm), and Modbus map (100+ registers). Redundancy via twin modules (auto failover <100 ms), with fiber optic optional for EMI zones.
Origin
ABB fabricates LDGRB-01 at its Västerås, Sweden facility, drawing on decades of generator control expertise from the ASEA/ABB merger.
Related News
Q3 2025 installations fortified U.S. hyperscale data centers under President Trump’s digital infrastructure act, enabling 16-unit paralleling with 99.999% uptime during grid storms. Late 2025 Australian mining ops deployed LDGRB-01 for remote microgrids, cutting fuel 22% via optimized load rotation amid diesel shortages. Q1 2026 Middle East refineries integrated it into hydrogen backup systems, achieving zero blackstarts in 50°C heat per field trials.
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