The TDK-Lambda LMS-9040 is a programmable AC-to-DC power supply delivering 0–40 VDC at up to 20 A (800 W) with dual-range 110/220 VAC input selectivity. Designed for industrial and commercial test, measurement, and equipment-powering applications, this unit combines microprocessor control with analog remote programming, CV/CC auto-crossover operation, and front-panel digital metering. Built-in overvoltage, overcurrent, and overtemperature protection ensure safe operation in demanding environments.
Technical Specifications
Output:
• Voltage: 0–40 VDC
• Maximum Current: 20 A
• Maximum Power: 800 W
• Line Regulation: 0.05% (voltage), 0.3% (current)
• Load Regulation: 0.05% voltage (0 to full load), 0.3% current (0 to rated voltage)
• Voltage Ripple & Noise: 10 mV RMS, 75 mV peak-to-peak
• Current Ripple & Noise: 1.0% of Iomax RMS
• Minimum Efficiency: 75% at full output power (18 V and 40 V models)
AC Input:
• Voltage Range: 85–132 VAC or 170–265 VAC (user-selectable)
• Frequency: 47–440 Hz
• Peak Inrush Current: ≤40 A
• EMI Filtering: FCC 20780 Class A, VDE 0871 Class A
• Surge Protection: IEEE-587 Class C for branch circuits and outlets
Dimensions: Approximately 5.1″ H × 16.7″ W × 13.4″ D (130 mm × 425 mm × 340 mm)
– Key Features
• CV/CC mode auto-crossover for constant voltage and constant current operation
• Adjustable overvoltage protection (OVP) with AC power recycle reset
• User-adjustable overcurrent protection (OCP)
• Remote sensing provision to eliminate lead resistance effects on regulation
• Isolated remote voltage programming (volt-per-volt or 0–8 V signal)
• Isolated remote current programming (0–5 V signal)
• Resistive programming: 200–1000 ohm/volt customer-adjustable
• TTL-compatible isolated remote on/off (contact closure or source)
• Front-panel CV/CC, standby, and overtemperature indicators
• Rear-panel overvoltage and overtemperature status indicators
• Simple screwdriver adjustment across full voltage range
• Digital front-panel voltage and current meters
– Typical Applications
Laboratory bench power supplies, manufacturing test stations, equipment development, sensitive electronic device powering, and quality assurance testing requiring stable, programmable DC output with integrated protection.
– Compatibility & Integration
Microprocessor-controlled interface supports isolated analog remote programming for voltage and current, TTL-compatible digital enable/disable control, and remote sense capability for precision load-side regulation.
