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How do I properly connect the Siemens PSX-12 power supply extender?

1Answers
DelZoey
12/17/2025, 02:10:09 PM

To connect the Siemens PSX-12 12 Amp Power Supply Extender, follow these steps for safe and efficient operation:

  1. Pre-Installation:

    • Turn OFF the dedicated circuit breaker for the PSX-12 at the mains.
    • Set the battery circuit breaker to the OFF position.
    • Set the HNET network address on the PSX-12 using the rotary dial switches, making sure it matches the address in the Zeus Programming Tool.

  2. Installation:

    • Disconnect all system power before installation, starting with the battery and then the AC power.
    • Mount the PSX-12 on the Mounting Plate (CAB-MP), inside or outside the enclosure, aligning it with the threaded posts.

  3. Wiring:

    • The PSX-12 uses removable terminal blocks. The top one is power-limited, and the bottom connectors are not.
    • Connect the earth ground to the PSX-12 using a dedicated circuit breaker, complying with local codes.
    • Wire according to local codes and NEC regulations, ensuring proper conductor separation.

  4. Power Supply Load Calculations:

    • Use the provided form to calculate the power supply load to avoid overloading the PSX-12.
    • Ensure that the total 24VDC and 6.2VDC loads for each row do not exceed the power supply output ratings.

  5. Battery Power:

    • Keep the battery circuit breaker OFF and use 14 or 12 AWG wire for battery connection.
    • Connect the batteries using the provided quick disconnects, following the specified steps. Following these steps ensures the Siemens PSX-12 is connected correctly for reliable operation.
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