DC/DC power supply SITOP SEL series

adjustableswitchingDIN rail

The quality of the power supply unit alone can’t guarantee a fault-free, 24-V supply. Power failures, extreme variations in the mains voltage or a faulty load can bring plant operation to a standstill and cause high costs. That’s why processes and plants that are critical for a company’s business generally require additional protection measures. SITOP add-on modules protect your production from a wide variety of potential hazards on the primary and secondary side and allow the completely flexible expansion of SITOP power supply units up to total, all-round protection. The SITOP selectivity and diagnostics modules are the optimal extension for all 24-V DC power supplies. They distribute and monitor the load current over several current circuits. Overloads and short circuits on a circuit are reliably recognized and the faulty 24-V DC load circuit reliably disconnected, while the other loads continue with absolutely no interruption; this prevents the complete failure of the plant. Reliable tripping, regardless of the cable lengths or cable cross-sections 4 or 8 24-V DC load feeders per module Alternative switch-off characteristics: - Limiting – prevents short-term voltage drop to below 20 V - Switching – can result in short-term voltage drop to below 20 V Diagnostics via common signaling contact or single channel signaling SEL1200/1400: 4 or 8 outputs, each with diagnostics of voltage, current, set threshold, reason for disconnection (if applicable) SEL1200/1400 8 x 10 A also available as explosion-proof variants PSE200U: 4 outputs with voltage measuring point for current (1 V ≙ 1 A)