SAACKE FSC-01

SAACKE FSC-01

Product Introduction FSC-01 is SIL3 certified integrated combustion controller manufactured by SAACKE for industrial burner and boiler systems. It executes flame monitoring, fuel-air ratio regulation, safety interlock sequence and burner start-stop management. The module collects process signals from pressure, temperature and flame detectors, outputs control commands to fuel valves, dampers and fans, and implements automatic shutdown when unsafe combustion conditions arise. This unit delivers full closed-loop combustion optimization for gas, oil and dual-fuel burners.

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Description

SAACKE FSC-01

Technical Specifications

  • Product Type: Combustion safety controller
  • Power Supply: 24 V DC
  • Power Consumption: 20 W
  • Digital Input Channels: 8 × 24 V DC interlock and status signals
  • Analog Input Channels: 4 × 0-10 V or 4-20 mA for process transmitters
  • Digital Output Channels: 8 × relay output, rated 250 V AC / 5 A
  • Analog Output Channels: 2 × 4-20 mA for damper and VFD control
  • Control Algorithms: PID, cascade control, fuel-air ratio control
  • Communication Interface: RS-485 Modbus RTU, optional Ethernet Modbus TCP
  • Safety Certification: IEC 61508 SIL3
  • Protection Rating: IP20 for control unit
  • Operating Temperature: -20 °C to +60 °C
  • Storage Temperature: -30 °C to +70 °C
  • Relative Humidity: 5 % to 95 %, non-condensing
  • Mounting Dimensions: 200 × 150 × 80 mm, wall mounting
  • Net Weight: 2 kg

Functional Features

  1. Complete burner sequencing control including pre-purge, ignition, flame monitoring and post-purge.
  2. Continuous flame signal evaluation to detect flame loss and trigger immediate safety trip.
  3. Closed-loop fuel-air ratio regulation reduces excess air and lowers NOx emission.
  4. 8 relay outputs drive fuel shutoff valves, fan contactors and alarm indicators.
  5. Built-in interlock logic validates pressure, temperature and limit switch status before ignition.
  6. Modbus communication uploads combustion parameters, fault codes and operating status to DCS.
  7. Integrated event log records trip time, fault type and process snapshot for troubleshooting.
  8. Hardware safety circuit independently cuts fuel supply upon detected unsafe conditions.
  9. Parameter lock function prevents unauthorized modification of burner configuration.
  10. Self-diagnostic test runs automatically at power-up and continuous background monitoring during operation.

Application Scenarios

  • Industrial steam boiler and hot water boiler burner control
  • Refinery process heater and furnace combustion safety system
  • Power plant auxiliary boiler dual-fuel burner management
  • Waste heat recovery furnace fuel and air regulation
  • Marine boiler combustion safety control system

Material Composition

  • Housing: Flame-retardant ABS plastic enclosure
  • Main PCB: FR4 printed circuit board with conformal coating
  • Relay components: Industrial electromagnetic safety relays
  • Signal processing chips: High precision analog front-end and safety logic processors
  • Terminal blocks: Tin-plated copper alloy screw terminals
  • Internal connectors: Gold-plated copper contact pins

Structural Characteristics

  • Wall-mounted compact rectangular enclosure design.
  • Front panel equipped with LED status indicators for power, flame, fault and running state.
  • Front side terminal blocks for field sensor and actuator wiring.
  • Internal circuit layout separates low voltage safety logic circuit and relay power circuit.
  • Internal EMC shielding structure suppresses electrical interference from ignition transformers.
  • Modular internal structure allows replacement of core board without removing entire enclosure.

Working Principle FSC-01 receives discrete interlock signals and analog process measurements from field instruments. The controller executes pre-programmed burner sequence. When pre-purge completes, the controller energizes ignition transformer and opens fuel valve. Flame detector sends flame signal to the controller. The unit continuously compares actual air-fuel ratio against setpoint and adjusts damper actuators via analog output. If flame loss, low fuel pressure or high temperature occurs, the safety circuit de-energizes fuel shutoff relays instantly to cut fuel supply and log the trip event.

Installation Requirements

  • Mount the unit on solid vertical wall inside control cabinet or protected electrical room.
  • Use shielded twisted pair cables for flame detector and analog signal wiring.
  • Separate high voltage ignition wiring from low voltage signal wiring in cable trays.
  • Complete protective earth connection for controller housing.
  • Set fuel curve and safety limit parameters according to burner datasheet before commissioning.
  • Perform full sequence test and flame failure trip simulation before putting burner online.
  • Verify all interlock switches and valve feedback wiring continuity.

Usage Notes

  • Execute full lockout reset procedure after every safety trip event.
  • Do not apply voltage exceeding rated specification to input terminals.
  • Maintain cabinet environment free of oil mist, corrosive gas and conductive dust.
  • Perform periodic SIL proof test and flame detector calibration per maintenance schedule.
  • Disconnect all power before opening enclosure for inspection.
  • Use anti-static wristband when removing internal circuit board.
  • Replace the controller immediately when permanent hardware fault occurs.

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