KNX Power Supply PS164 (640 mA) | Professional Bus Power Unit
Core Specifications & Hardware Features
The PS164 640mA power supply is engineered for durability and efficiency in professional building automation environments.
- Output Current: 640 mA (Regulated) for full-line support.
- Bus Voltage: 30V DC (+1/-2 V) with an integrated choke to prevent data signal interference.
- Auxiliary Output: Includes an additional 30V DC output (without choke) to power high-consumption devices like IP routers, displays, or logic modules without using a second power supply.
- Protection: Fully protected against short circuits, overloads, and overheating to ensure maximum system uptime.
- Mounting: Compact DIN-rail design (4 modules wide) for easy integration into electrical distribution boards.
Key Technical Advantages
| Feature | Technical Benefit |
|---|---|
| Integrated Choke | Decouples the power supply from the communication signal, allowing data telegrams to travel across the bus without being absorbed by the power source. |
| Status LEDs | Front-facing indicators for Power (Run), Overload (I > Imax), and Reset, allowing for instant on-site diagnostics. |
| Wide Input Range | Designed to handle AC input variations (typically 100V–240V AC), making it suitable for global electrical standards. |
| Reset Function | A dedicated reset button/switch allows for a localized bus restart without disconnecting wires physically. |
Installation & Wiring Guidelines
To ensure the longevity of your KNX Power Supply PS164 and the reliability of the EAE KNX or other connected actuators, follow these wiring standards:
- Bus Connection: The red (+) and black (-) bus wires must be connected to the “KNX Bus” output. Ensure the cable is a certified KNX twisted-pair (green) cable.
- Auxiliary Use: If your project uses a KNX IP Router or a Touch Panel, use the auxiliary output (Yellow/White) to save space and cost on additional power sources.
- Loading: While a 640 mA supply can theoretically power 64 devices, it is best practice to calculate the total current draw (usually ~10mA per device) and leave a 20% safety margin for peak communication loads.
Frequently Asked Questions (FAQ)
Q: Can I use the PS164 with the EAE RCU2000 KNX ACTUATOR?
A: Yes, the PS164 provides the necessary bus power and choke required for the EAE RCU2000 KNX ACTUATOR to communicate reliably across the network.
Q: What happens if the PS164 is overloaded?
A: The “Overload” LED will illuminate, and the device will automatically protect the circuit by limiting the current or shutting down temporarily until the load is reduced.
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