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Bosch Building Technologies

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    How to configure Multiple D7038, DS9484 NAC Power Supplies

    Issue

    When AC power is lost on all 6 - D7038's it causes NAC1 on the D7024 that is driving the inputs of the D7038's to go into trouble. What is causing this to happen?

    Solution

    The AC dipswitches 2 & 3 on the D7038's all had different settings.  In order for the AC Delay feature to work, all the AC dipswitches 2 & 3 need to be set for the same value.

    Note: In order for Dip Switch Changes to take effect the D7038 needs to be powered down completely for 4 minutes.

                      Dip Switch Setting For AC Fail Delay 

    Delay Time (In Hours)         Dip Switch (2)           Dip Switch (3)

    AC Fail Time Delay (1)        On/Closed                 Off/Open

    AC Fail Time Delay (6)        Off/Open                   Off/Open

    AC Fail Time Delay (12)      Off/Open                    On/Closed

    AC Fail Time Delay (24)      On/Closed                 On/Closed

    Part numbers DS9400, DS9400I, DS9400M, D7024, DS9484, D7038

    Version history
    Revision #:
    1 of 1
    Last update:
    ‎06-06-2018 09:28 PM
    Updated by:
     
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