Description

FC36MV 110V High Power 3-Phase Dual Mode Thyristor Driver

The FC36MV 110V Dual Mode Firing Board is a high-power, microprocessor-based three-phase thyristor driver engineered for demanding industrial power control applications. Designed as a populated PCB for seamless integration into three-phase SCR power assemblies, it provides accurate and reliable control of thyristors (SCRs) across a wide range of industrial heating, rectification, and power conversion systems.

Configured for 110V AC operation, the FC36MV simplifies installation by eliminating the need for external phasing transformers through its direct gate/cathode outputs. With selectable Phase Angle, Burst Fire, and Combination firing modes, automatic phase rotation correction, phase-loss detection, adjustable ramp control, and over-current protection, it delivers exceptional flexibility, precision, and reliability for industrial power management.

Key Features

The FC36MV 110V High Power Thyristor Driver combines advanced SCR firing technology with intelligent protection and flexible control for high-power industrial applications.

• 110V AC supply version
• High-power microprocessor-based three-phase thyristor driver
• Auto phase rotation correction and phase-loss detection
• Switch-selectable phase reversal
• Three operating modes: Phase Angle, Burst Fire and Combination firing
• Suitable for resistive and inductive loads
• Analogue and digital opto-isolated control inputs
• Adjustable soft-start ramp (0–30 seconds)
• Current limit and over-current protection
• LED status indicators for diagnostics and monitoring
• Simplified wiring with no external phasing transformer required
• Designed for demanding industrial SCR power control applications

Technical Specifications

• Supply Voltage: 110V AC ±10%
• Frequency: 50/60Hz
• Controller Type: Microprocessor-based high-power three-phase thyristor driver
• Operating Modes: Phase Angle, Burst Fire or Combination firing
• Primary Fusing: Three HRC F1A ceramic fuses (20 × 5mm)
• Current Consumption: 650mA (full conduction)
• Initial Short-Circuit Gate Current: 750mA
• Sustaining Short-Circuit Gate Current: 400mA
• 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: 270Ω
• Opto-Isolated Digital Inputs: 5–24V DC
• Ramp Adjustment: Adjustable from 0–30 seconds
• Current Limit / Over-Current Trip: 0–5V DC
• Load Selection: Resistive or Inductive (SW4 selectable)
• Operating Temperature: 0°C to +65°C
• Storage Temperature: 0°C to +65°C
• PCB Dimensions: 203mm (L) × 108mm (W) × 40mm (H)
• PCB Fixing Holes: 6 × M3.5 mounting holes
• PCB Fixing Centres: Two rows spaced 75mm apart with 96.5mm between mounting holes
• DIN Rail Enclosure (Optional): 207mm (L) × 128mm (W) × 70mm (H)

Operation

The FC36MV 110V Firing Board generates precise gate firing pulses for high-power three-phase SCR assemblies. Users can select Phase Angle, Burst Fire, or Combination firing modes to suit a wide variety of industrial power control applications.

The controller accepts analogue voltage, current, or digital opto-isolated control signals and incorporates an adjustable soft-start ramp to minimise electrical stress during start-up. Automatic phase rotation correction and phase-loss detection simplify commissioning while enhancing operational reliability. Integrated over-current protection helps safeguard both the controller and connected equipment during fault conditions.

Selectable resistive or inductive load operation makes the FC36MV suitable for virtually any three-phase SCR-controlled power system.

Applications

The FC36MV 110V High Power Thyristor Driver is ideal for:

• High-power three-phase SCR controllers
• Industrial power supplies
• Controlled rectifiers
• AC motor control
• DC motor control
• Industrial furnaces
• Electroplating equipment
• Transformer control systems
• Heater controllers
• Process heating equipment
• Industrial power regulation
• Manufacturing machinery
• Heavy-duty industrial automation
• High-power SCR assemblies

Benefits

• High-power three-phase SCR firing solution
• Supports Phase Angle, Burst Fire and Combination firing
• Automatic phase rotation correction simplifies installation
• Detects phase loss for improved reliability
• Eliminates external phasing transformers
• Compatible with analogue and digital control signals
• Adjustable soft-start reduces electrical stress
• Built-in over-current protection improves equipment safety
• Suitable for resistive and inductive loads
• Reliable microprocessor-based control for demanding industrial applications

Safety & Installation

Installation should only be carried out by suitably qualified personnel.

• Isolate all power supplies before installation or maintenance.
• Ensure the correct 110V supply version is installed.
• Mount the PCB securely using the recommended fixing centres or install within a suitable DIN rail enclosure if applicable.
• Configure the firing mode and load type before commissioning.
• Fit suitable external circuit protection in accordance with local electrical regulations.
• Ensure adequate ventilation and operate within the specified temperature range.