The Quanser A12-437-1 Linear Current Amplifier Module (LCAM) is a high-performance current amplifier engineered for precision control of linear electromechanical systems. Operating in current or voltage mode with zero deadband, it delivers stable, low-noise output across broad bandwidth specifications. Each channel integrates current sensing, current limiting, and thermal protection, making it suitable for demanding closed-loop applications including voice coil actuation, coreless DC motor drives, and magnetic bearing control systems.
Technical Specifications
Electrical Performance:
• Maximum continuous current: 7 A per channel
• Peak current capability: 9 A per channel
• Power supply: 27 to 60 V DC single-supply operation
• Continuous output power (QPA-L series): 280 W
• Operating modes: Current mode or voltage mode with zero deadband
• Noise operation: Low-noise
• Bandwidth: Broad bandwidth in both current and voltage modes
Control & Protection:
• Integrated current sensing per channel
• Integrated current limiting per channel
• Thermal protection per channel
• Selectable closed-loop current controller gains
• Emergency-stop safety switch for output disable/enable
– Key Features
• Bracket-mounted module design, integrable into multi-channel amplifier systems (QPA-L4-E: four channels; QPA-L2-E: two channels)
• Supplied Simulink model enables current loop tuning via external component selection (capacitor and resistor)
• Single-ended or differential encoder signal handling with internal buffering and single-ended conversion
• SCSI I/O connector for PC-based control signal routing
• Circular encoder connector interface for optical incremental encoders
– Typical Applications
Voice coil actuation, coreless DC motor control, magnetic bearing systems, and precision linear motion requiring accurate current output in closed-loop control environments.
– Compatibility & Integration
Fully compatible with Quanser QUARC for Simulink and MATLAB, and National Instruments LabVIEW. Integrates with Quanser Q8 and Q4 Hardware-In-the-Loop (HIL) boards. QPA-L series enclosure supports 110/120 VAC or 220/240 VAC single power outlet input.
