Modern automation systems rely on a stable 24 V DC power supply to support control, communication and safety functions. Even brief disturbances, whether dips, short outages, or longer mains failures, can interrupt processes, trigger equipment resets, and cause production delays. PULS Buffering Solutions are engineered to prevent these issues by maintaining predictable system behaviour during power disturbances and enabling rapid recovery without manual intervention.

PULS offers a complete range of battery based DC UPS controllers, supercapacitor UPS units and capacitor based buffering modules. Each is designed for a specific class of power disturbance, allowing users to choose the most effective solution for their environment.

UF Series – For Sub-Second Voltage Dips

The UF series bridges very short supply failures and extends hold up time after AC mains loss. Using maintenance free electrolytic capacitors, UF modules provide minimum hold up times of around 160 ms at 40 A, 200 ms at 20 A and significantly longer at lighter loads. Common models, such as the UF20.241 and UF40.241, support 20 A and 40 A applications, respectively, making them ideal for regions with unstable mains quality.

UF units can be added anywhere in the load circuit without control wiring. They stabilise the 24 V bus during dips, deliver short term peak currents beyond the power supply rating and operate reliably from –25 °C to +70 °C. This ensures seamless bridging of most power disturbances lasting under 0.2 seconds, preventing device resets and supporting controlled process completion, with minimal panel space and no maintenance.

UC Series – For Frequent Short Outages and Harsh Conditions

The UC series is designed for environments that experience repeated short brownouts, switching events, and wide temperature fluctuations. These units use long life EDLC supercapacitors to deliver several seconds of regulated 24 V output, with rapid recharge between events. Their high cycle durability makes them ideal for facilities where disturbances occur regularly and where battery maintenance would be impractical or costly.

By maintaining continuous PLC and communication uptime through every short disturbance, UC modules prevent repeated resets, incomplete cycles and nuisance alarms. The absence of VRLA batteries eliminates gas emissions and replacement intervals. This provides a robust and low maintenance continuity solution that is especially valuable for remote or utility sites.

UB Series – One-Battery-Concept for Reliable, Scalable Autonomy

Traditional DC UPS systems often require multiple batteries in series, leading to challenges such as uneven ageing, battery matching and reduced predictability. The PULS UB Series resolves these issues through its one-battery-concept.

UB10 modules use a single 12 V VRLA battery with an integrated step up converter that maintains a regulated 24 V output regardless of battery charge state. UB20 and UB40 units utilise two 12 V batteries, which are monitored and charged independently, thereby avoiding mismatches and ensuring optimal battery health.

This design simplifies installation, replacement and autonomy planning while providing accurate diagnostics and dependable backup performance during longer mains failures. Users gain predictable run through times, stable machine behaviour and a streamlined service strategy across varied load profiles.

PULS buffering solutions deliver uninterrupted power with unmatched performance, keeping systems always on. To find out more about how PULS buffering solutions can reduce your business’s downtime and maintenance costs, contact IPD today