Power Supply LEDs

The BMXCPS4002S, BMXCPS4022S, and BMXCPS3522S safety power supplies present a front panel that includes the following diagnostic LEDs:

  • OK: Operating Status

  • ACT: Activity

  • RD: Redundancy (for redundant power supply designs)

The M580 safety power supply LEDs can present the following diagnostic information:

LED

Description

OK

  • ON (green) indicates that all of the following are true:

    • 24 Vdc backplane voltage is OK.

    • 3.3 Vdc backplane voltage is OK.

    • The RESET button has not been activated.

  • Blinking indicates one of the following is true:

    • 24 Vdc backplane current is not OK.

    • 3.3 Vdc backplane current is not OK and the RESET button has not been activated.

  • OFF indicates that at least one of the following is true:

    • 24 Vdc backplane voltage is not OK.

    • 3.3 Vdc backplane voltage is not OK.

    • The RESET button has been activated.

ACT

  • ON (green) indicates the power supply is supplying power. In a redundant power supply design, the module is the primary.

  • OFF indicates the power supply is not supplying power. In a redundant power supply design, the module is the standby.

RD

  • ON (green) indicates communication between the two power supply modules is OK.

  • Blinking indicates one of the following is true:

    • 24 Vdc backplane current is not OK.

    • 3.3 Vdc backplane current is not OK.

  • OFF indicates at least one of the following is true:

    • Communication between the two power supply modules is not OK.

    • Auto-tests are being performed.