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Emerson PACSystems RX3i Important Product Information
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Emerson PACSystems RX3i Important Product Information

Emerson PACSystems RX3i Important Product Information

Multifunction isolated power supply, 24 vdc, 80 w
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IMPORTANT PRODUCT INFORMATION
GFK-3252A
Aug 2023
TM
PACSystems
RX3i Multifunction Isolated
Power Supply, 24 VDC, 80 W
(IC695PSD180)

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Summary of Contents for Emerson PACSystems RX3i

  • Page 1 IMPORTANT PRODUCT INFORMATION GFK-3252A Aug 2023 PACSystems RX3i Multifunction Isolated Power Supply, 24 VDC, 80 W (IC695PSD180)
  • Page 2 Changes, modifications, and/or improvements to equipment and specifications are made periodically and these changes may or may not be reflected herein. It is understood that Emerson may make changes, modifications, or improvements to the equipment referenced herein or to the document itself at any time.

  • Page 3: Wiring Terminals

    GFK-3252A Aug 2023 Introduction The PACSystems RX3i Power Supply IC695PSD180 is a multifunction 80 Watt supply that operates from an input voltage from 18 Vdc to 30 Vdc. This power supply provides three outputs: • +24 Vdc output used to power circuits on Output Relay modules.
  • Page 4 GFK-3252A Aug 2023 Specifications: IC695PSD180 Specification Description Nominal Rated Voltage 24 Vdc Input Voltage Range 18 to 30 Vdc Input Power 105 W maximum at full load Inrush Current† 10 A, 100 ms maximum Output Power 80 W maximum total of all outputs 24 Vdc = 75 Watts maximum power rating 5.1 Vdc = 60 Watts maximum power rating 3.3 Vdc = 60 Watts maximum power rating...
  • Page 5 GFK-3252A Aug 2023 Installation Information for Hazardous Areas For hazardous area information please refer to GFK-3069, PACSystems RX3i Installation and Maintenance Requirements. Thermal Deratings: PSD180 The maximum output power for Power Supply PSD180 depends on the surrounding air temperature, as shown below.
  • Page 6 GFK-3252A Aug 2023 A typical system with a single PSD180 unit is shown below. The configuration would use 35.7 W of 3.3 V power, 33.8 W of 5 V power, and 2.4 W of 24 V power for a total of 71.9 W. While the individual derating charts would suggest that there would be no derating, the unit would need to be limited to an operating temperature of 56°C to prevent throttling or failure.
  • Page 7 GFK-3252A Aug 2023 Dual Unit Derating The following graphs display derating curves for a system with two PSD180 units at full load. Figure 5: Thermal Derating Curves for Dual Unit PSD180...
  • Page 8 GFK-3252A Aug 2023 A typical system with dual PSD180 units is shown below. The configuration would use 41.6 W of 3.3 V power, 45.3 W of 5 V power, and 2.4 W of 24 V power for a total of 89.3 W. This load would not result in derating and no thermal limiting is needed.

  • Page 9: Overcurrent Protection

    GFK-3252A Aug 2023 Overcurrent Protection The 5.1 Vdc output is electronically limited to 13.2 Amps. The 3.3 Vdc output is limited to 19.8 Amps. If an overload (including short circuits) occurs, it is sensed internally and the Power Supply shuts down. Because it is designed for redundancy applications, this Power Supply latches “OFF”...
  • Page 10 GFK-3252A Aug 2023 Connections for Load Sharing In load-sharing installations, additional multifunction power supplies above the minimum required for the system load may be wired to the same power source, or a different source. Figure 10: Load Sharing...
  • Page 11 GFK-3252A Aug 2023 Connections for Power Supply Redundancy Power Supply redundancy can be provided by using one additional multifunction power supply above the minimum required for the system power load. In this type of installation, all multifunction power supplies contribute a share of the backplane power and run at a correspondingly reduced load.

  • Page 12: Revision History

    GFK-3252A Aug 2023 Power Source Redundancy If the overall power needs of the system can be met using one multifunction power supply, then power source redundancy can be provided by using a second multifunction power supply. In this type of system, one of the multifunction power supplies must be connected to one power source and the other must be connected to a separate source.

  • Page 13: General Contact Information

    Note: If the product is purchased through an Authorized Channel Partner, please contact the seller directly for any support. Emerson reserves the right to modify or improve the designs or specifications of the products mentioned in this manual at any time without notice. Emerson does not assume responsibility for the selection, use or maintenance of any product.