Learn how to replace the Danisense DS50UB current transducer (part number 786956-01). The DS50UB is by the exhaust of the EA-PS 11500-30 power supply.

Equipment

  • Torque driver, N · m or lb · in.
    • T10 torx bit
    • #2 Phillips bit
  • Torque wrench, N · m or lb · in.
    • 8 mm socket wrench bit
    • 10 mm socket wrench bit
  • 8 mm wrench
  • 10 mm wrench
  • Small flathead screwdriver
  • Tray for loose fastening hardware

Torque the fasteners to the following specifications:

  • M5 pan head: 4.01 N · m (35.4 lb · in.)
  • M6 hex head: 6.83 N · m (60.4 lb · in.)
  • 10-32 pan head: 3.16 N · m (27.9 lb · in.)
  1. Follow all Before Maintenance or Repair procedures.
  2. While facing the mass interconnect, remove the screws containing the lowest 8U filler panel using the #2 Phillips bit.
    Set aside the filler panel.
  3. Remove the following cables from the DS50UB current transducer.
    1. Disconnect the DB9 cable using a small flathead screwdriver.
    2. Disconnect the BNC plug by pushing the plug in, turning it 90° counterclockwise, and pulling it out.
  4. Unfasten the screws holding the safety cover over the output terminal of the EA-PS 11500-30 (HV supply) using the T10 torx driver.
    Place the loose screws in the tray for loose fastening hardware.
  5. Loosen the bolts securing the ring terminals on the HV supply output terminals using the 10 mm wrench.
    1. Place the loose bolts, washers, and nuts in the tray for loose fastening hardware.
    2. Pull the 8 AWG red wire from the + output terminal of the HV supply through the DS50UB current transducer so that the red wire no longer passes through its center.
  6. Unfasten the two M5 screws holding the DS50UB current transducer to its mounting bracket using the #2 Phillips bit.
  7. Pull the current transducer out of the system rack.
Follow the removal instructions in reverse order with a new DS50UB current transducer.
Note Ensure that the red 8 AWG wire goes through the hole in the current transducer before going through the safety cover to reconnect to the HV supply.
Note You must reinstall the safety cover onto the HV supply before powering on the system rack.