Why SITOP add-on modules?
SITOP add-on modules are expansion modules that reliably protect power supplies from interference and hazards on the primary and secondary sides. They prevent plant standstills and costly damages by protecting against power failures, extreme voltage variations, or faulty loads. These modules offer a unique, flexible expansion for SITOP power supply units, enabling complete, all-round protection.
Reliable system protection from varied potential hazard
Safeguarding against failure through redundancy
Ensure a reliable 24-V DC supply even if one power supply unit fails by decoupling two power supplies. The module continuously monitors the feeding power supply units and sends a signal if a failure occurs.
Fast, selective fault location for 24V DC loads
Divide the 24-V DC power supply circuit into separate branches and selectively protect them. The modules reliably disconnect faulty load circuits, ensuring the supply to other loads continues without interruption and preventing total plant failure.
Bridging short-term power failures
Bridge short-term power failures (brownouts) in the seconds range using electrolytic capacitors to ensure reliable, interruption-free operation.
Reliable reduction of inrush currents
Protect the power supply and all connected loads by reliably reducing high inrush currents from starting motors, transformers, and other equipment, preventing the tripping of protective devices and damage to sensitive components.
Protect against high reverse voltages
The SITOP CHO1400 chopper module protects the output of a 24-V or 48-V power supply against excessive voltages induced by loads, e.g. by DC motors in braking mode. If the voltage exceeds the response threshold of the module due to regenerative braking, the module limits the voltage by converting the regenerated energy into heat via internal resistors.
Trip miniature circuit breakers
The SITOP PBM1200 power boost module can be connected in parallel with a SITOP 24-V or 48-V power supply from 20 A to disconnect the affected feeder in milliseconds in the event of a short circuit. The power boost module briefly supplies the high tripping current required by the miniature circuit breaker to disconnect the affected feeder.
