Weinzierl KNX IO 512 Secure | 12-channel switching actuator for professional LED installations

The KNX IO 512 Secure switching actuator (Art. 5491) by Weinzierl represents the ideal solution for controlling AC loads, with a particular focus on LED lighting applications. This device combines reliable construction, certified KNX security and high channel density, making it perfect for professional installations in residential and commercial environments.

Discover KNX IO 512 Secure - cod. WNZ_5491

Key features

The IO 512 Secure offers 12 bistable relay outputs at 230V, each rated for 16 A nominal current. An important feature is the centralized power supply: all channels share a single power source, ensuring clear wiring in the control cabinet and the ability to monitor mains voltage directly from the device.

Surge protection technologies and relay protection

Zero crossing switching

One of the key features is zero crossing switching, which synchronizes the switch-on to the zero crossing of the mains voltage. This significantly reduces inrush currents typical of capacitive loads such as modern LEDs. The result is greater relay durability and elimination of current peaks in the system.

Offset switching

Offset switching allows the switch-on of multiple channels to be staggered over time. This function is particularly useful when restoring voltage after a power interruption: progressive shutdown on failure and delayed switch-on on recovery can be configured, thus avoiding overloads on line protection and energy distribution systems.

Advanced features

• Scenes and logic programming

  : support for scenes, switch-on/switch-off delays, staircase lighting control

• Valve control

  : PWM modulation for thermal actuators and zone valves

• Timer functions and independent logic

  : local processing without dependence on the KNX bus

• Multi-selection manual operation

  : simultaneous switching of multiple channels from the device keyboard, even without bus voltage

• Direct control from ETS

  : immediate programming and switching of channels from the ETS parameter area, also useful for remote maintenance

• Mains voltage monitoring

  : local LED signaling + KNX telegrams in case of failure

Security and compliance

The IO 512 Secure supports KNX Data Security, ensuring protection of communications on KNX TP. All technical and regulatory data are certified according to current European directives (Low Voltage 2014/35/EU, EMC 2014/30/EU, RoHS 2011/65/EU and specific EN standards).

Essential technical data

Ideal for

✓ Residential and commercial LED lighting systems
✓ Centralized control with high channel density
✓ Applications requiring KNX Data Security protection
✓ Systems with remote maintenance and diagnostic needs
✓ Installations with frequent switching and current peaks

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