Omron VFD House – 4×3 Configuration

Omron VFD House – 4×3 Configuration

Manufacturer: Omron Corporation
Equipment Type: VFD (Variable Frequency Drive) Control House
Configuration: “4×3” (describes the # of drives × # of output phase sections)

What “4×3” Means

• 4 — Four VFD modules or drive positions

• 3 — Three-phase input and output power
  This typically means a VFD house with four separate drives, each controlling a three-phase motor.
  A typical arrangement might be four VFDs feeding four separate three-phase motors (e.g., mud pumps, drawworks, conveyors, mixer motors).

Primary Function

Omron VFD Houses convert incoming AC power into controlled, variable-frequency three-phase output to regulate the speed and torque of AC motors.
Commonly used for:

• Electric mud pump drives

• Drawworks motor speed control

• Top drive motor control

• Cyclone / desander / shaker motor control

• Conveyor and auger drives

Core Components

A typical Omron VFD House (4×3) contains:

Input Section

• Three-phase AC input

• Main circuit breaker or fused disconnect

• Line reactors or filters (optional)

• Surge protection / power conditioning

VFD Modules (4 units)

Each VFD module includes:

• Rectifier front end (AC → DC)

• DC bus capacitors

• Inverter section (DC → variable-frequency AC)

• Control board (Omron drive controller)

• Cooling fans or heat sinks

Output Section

• Controlled three-phase output to a motor

• Output reactors / filters (optional)

• Motor overcurrent protection