Description

FC36M 230V 3-Phase Dual Mode Thyristor Driver

The FC36M 230V Dual Mode Firing Board is a microprocessor-based three-phase thyristor driver engineered for precise and reliable SCR (thyristor) control in industrial power control systems. Supporting both phase-angle and burst-fire firing modes, it provides flexible operation for resistive and inductive loads, making it suitable for a wide range of industrial heating, motor control, and power conversion applications.

Designed for seamless integration into power control assemblies, the FC36M simplifies installation by eliminating the need for external phasing supply transformers. Available in 110V, 230V, 415V, and 480V supply versions, this model is configured for 230V AC operation and features opto-isolated control inputs, adjustable ramp control, over-current protection, and an RJ45 communications port for enhanced system integration.

Key Features

The FC36M 230V Dual Mode Firing Board provides advanced SCR firing control with flexible operating modes, comprehensive protection features, and straightforward integration into industrial control systems.

• 230V AC supply version
• Microprocessor-based three-phase thyristor driver
• Dual operating modes: Phase Angle and Burst Fire
• Switch-selectable phase reversal
• Suitable for resistive and inductive load
• Analogue and digital opto-isolated control inputs
• Adjustable soft-start ramp (0–30 seconds)
• Current limit and over-current latching protection
• LED status indicators for system monitoring
• RJ45 communications port for integration
• Simplified wiring with no external phasing transformer required

Technical Specifications

• Supply Voltage: 230V AC ±10%
• Frequency: 50/60Hz
• Controller Type: Microprocessor-based three-phase thyristor driver
• Operating Modes: Phase Angle or Burst Fire (switch selectable)
• Primary Fusing: Two HRC F1A ceramic fuses (20 × 5mm)
• Current Consumption: 350mA (full conduction)
• Initial Short-Circuit Gate Current: 500mA
• Sustaining Short-Circuit Gate Current: 250mA
• Initial Pulse Voltage: 9V
• Sustaining Pulse Voltage: 5V
• Pulse Train Frequency: 25kHz
• Voltage Control Inputs: 0–5V DC or 0–10V DC
• Input Resistance: 10kΩ / 20kΩ
• Current Control Input: 4–20mA
• Current Input Resistance: 240Ω
• Opto-Isolated Digital Inputs: 5–24V DC
• Ramp Adjustment: 0–30 seconds
• Current Limit / Over-Current Trip: 0–100mV DC or 0–25V DC
• Load Selection: Resistive or Inductive (SW4 selectable)
• Operating Temperature: 0°C to +65°C
• Storage Temperature: 0°C to +65°C

PCB Dimensions

• PCB Size: 162mm (L) × 108mm (W) × 40mm (H)
• Fixing Holes: 4 × M3.5 clearance holes
• Fixing Centres: 150mm × 62mm

DIN Rail Enclosure

• Dimensions: 166mm (L) × 128mm (W) × 70mm (H)

Operation

The FC36M firing board generates accurate gate firing pulses for three-phase SCR power controllers. Users can select between phase-angle firing for proportional power regulation or burst-fire control for efficient switching of resistive heating loads.

Control signals may be provided using analogue voltage, current, or digital opto-isolated inputs. Adjustable ramp control provides gradual power increase during start-up, while built-in over-current protection helps safeguard connected equipment from fault conditions.

The board supports both resistive and inductive load configurations, making it suitable for a wide variety of industrial power control applications.

Applications

The FC36M 230V Thyristor Driver is ideal for:

• Three-phase SCR power controllers
• Industrial power supplies
• Half-controlled rectifiers
• Fully controlled rectifiers
• AC motor control
• DC motor control
• Soft starter systems
• Electric heater controllers
• Induction generators
• AC voltage regulators
• Industrial process control
• Manufacturing equipment
• Power conversion systems

Benefits

• Precise three-phase SCR firing control
• Supports both phase-angle and burst-fire operation
• Simplifies system wiring and installation
• Compatible with analogue and digital control signals
• Adjustable soft-start reduces electrical stress
• Built-in over-current protection improves system safety
• Suitable for both resistive and inductive loads
• Reliable microprocessor-based operation
• Easy integration into industrial control systems
• Multiple supply voltage options available across the FC36M range

Safety & Installation

• Installation should only be carried out by suitably qualified personnel.
• Isolate all power supplies before installation or maintenance.
• Ensure the correct 230V supply version is used.
• Fit appropriate external circuit protection in accordance with local electrical regulations.
• Configure the load type and operating mode correctly before commissioning.
• Install within the specified operating temperature range and provide adequate enclosure ventilation.

.X20004 – FC36M User Manual(7)