Overview
The Keyence SL-U2 is a compact switching-mode power supply module engineered to power Keyence safety light curtain systems. This unit converts 100–240VAC input to regulated 24VDC output at 1.8A, providing stable power for GL-V and GL-R series light curtain controllers. Its DIN rail mounting form factor integrates cleanly into control panels and automation cabinets.
Key Features
- Wide input voltage range: 100–240VAC ±10%, 50/60Hz operation
- Regulated 24VDC output at 1.8A capacity with ±10% tolerance
- Switching-type power conversion for high efficiency
- Compact DIN rail mounting for panel integration
- Supply voltage interruption holdover: 10 ms maximum
- Class 2 power output per safety standards
Technical Specifications
- Input Voltage: 100–240VAC ±10% (50/60Hz)
- Output Voltage: 24VDC ±10%, Class 2
- Output Current: 1.8A maximum
- Input Current: 0.98A at 100–240VAC
- Power Consumption: 135 VA
- Ripple/Noise: 240 mV p-p maximum
- Supply Voltage Interruption: 10 ms maximum
- Operating Temperature: –10 to +55°C (no freezing)
- Relative Humidity: 35–85% RH (no condensation)
- Withstand Voltage: 1,500VAC for 1 minute
- Insulation Resistance: ≥50 MΩ (500 VDC)
- Mounting: DIN rail
- Weight: 0.60 lbs
- Certifications: EN60950-1, EN50178, UL60950-1, UL508, EMC (EN61000-6-2, EN55011 Class A, FCC Part15 Class A)
Typical Applications
The SL-U2 power supply is used in industrial safety light curtain installations requiring 24VDC auxiliary power. Common applications include:
- Safety light curtain controller power for machine guarding systems
- Emergency stop (E-stop) circuit auxiliary supply
- Conveyor and material handling equipment safety interlocks
- Robotics and collaborative work cell protection
- Manufacturing and packaging line safety zones
Compatibility & Replacements
Compatible With
- Keyence GL-V series safety light curtains
- Keyence GL-R series safety light curtains
- Keyence SL-R11 light curtain receivers and controllers
- Standard DIN rail installations (35 mm standard)
- Control systems requiring 24VDC Class 2 auxiliary power
Replaces / Drop-In Replacement For
- Direct replacement for Keyence SL-U2 units in safety light curtain systems
- Compatible with legacy Keyence light curtain installations using SL-series power supplies
- Verify compatibility with your specific Keyence light curtain model before ordering
Works With
- Keyence light curtain safety systems (GL-V, GL-R series)
- Industrial PLC and safety controller 24VDC auxiliary circuits
- Standard industrial 100–240VAC power distribution
- DIN rail-mounted control panels and electrical cabinets
