Digital guide
You are here:
Woodward 9907-522
Product Name: Woodward LS-522 Master Synchronization & Load Controller
Product Introduction: A master station controller of the LS-5 series, serving as the overall coordination unit for the entire power station. It issues load commands to multiple slave controllers to achieve total plant load control, supports grid import/export power regulation, and is suitable for large-scale multi-unit power station systems.
Detailed content
Technical Specifications:
-
Power Supply: 18–32 VDC
-
Sampling: Three-phase voltage and current sampling
-
Communication: CAN bus networking, capable of connecting to multiple slave controllers
-
Analog Input: 4–20 mA remote load setpoint
-
Multiple digital input/output channels
-
Operating Temperature: -40°C to +70°C
Functional Features:
-
Acts as the system master controller, coordinating load distribution for multiple generator sets
-
Supports grid import/export power control, adjusting total unit output according to grid demand
-
Synchronization detection and breaker control logic
-
4–20 mA analog remote total load target setting
-
Fault recording and event log storage for easy fault tracing
Application Scenarios: Multi-unit self-owned power plants, industrial waste heat power generation, large-scale distributed power stations.
Material Composition: Engineering plastic panel, metal enclosure, main control circuit board, analog signal acquisition circuits, relay output circuits, flame-retardant terminals.
Structural Features: Panel-embedded installation with keypad and status indicators on the front; terminal block on the rear.
Working Principle: Samples the total grid power signal, calculates the load target for each unit, and issues commands to each slave controller via the CAN bus. Each slave adjusts its prime mover output to bring the total plant load under control. The synchronization detection logic completes grid-tie closing control.
Installation Requirements:
-
Cabinet panel cutout installation
-
CAN bus uses shielded twisted-pair cable with terminal resistors configured
-
Fuses must be configured in the sampling circuit; separate routing of strong-current and weak-current lines
-
Reserve heat dissipation space; keep away from heat-generating devices
Usage Precautions:
-
Ensure correct phase sequence before grid-tie to prevent out-of-sync closing
-
This controller does not include independent overspeed protection; the system must be equipped with an independent hardware overspeed shutdown device
-
Anti-static protection must be observed when assembling/disassembling circuit boards
Note: As the master controller, if communication with slave stations is interrupted, the system must have a fail-safe mechanism to prevent uncontrolled load distribution.
