Before You Apply Power to Frames 5 and 6

Before you place a drive or bus supply into operation after a repair, follow these steps.
ATTENTION:
Risk of injury or death exists.
To avoid an electric shock hazard, verify that there is no AC input and DC bus voltage by taking these measurements:
  • Verify that there is no AC input voltage present on the R/L1, S/L2, and T/L3 terminals.
  • Verify that there is no DC bus voltage present by using the +DC to –DC terminals and measuring +DC to –DC, +DC to GND, and –DC to GND.
  1. Measure the AC input and DC bus voltage to verify that there is no voltage present:
    1. Measure the AC input terminals R/L1, S/L2, and T/L3; L to L and L to chassis GND (PE).
    2. Measure the DC output terminals; DC+ to DC–, DC+ to chassis GND (PE), and DC– to chassis GND (PE).
  2. Frame 5 Power Terminal Identification
    frame 5 power terminals identification
    Frame 6 Power Terminal Identification
    frame 6 power terminals identification
    Item
    Name
    Description
    A
    PE grounding stud
    Termination point to chassis ground for AC line shield
    B
    R/L1, S/L2, T/L3
    AC line input power terminals
    C
    DC+, DC–
    DC bus terminals
    D
    U/T1, V/T2, W/T3
    AC output motor terminals
    E
    PE grounding stud
    Termination point to chassis ground for motor shield
  3. Perform phase to ground resistance tests to verify that there are no shorts on the following locations:
    • Use terminals R/L1, S/L2, and T/L3 to measure L to chassis GND (PE).
    • Use terminals +DC and –DC to measure +DC to chassis GND (PE), and –DC to chassis GND (PE).
  4. If the measured value of any resistance test is less than 1 kΩ, troubleshoot to find the short, correct the problem, and repeat step 2.
  5. For any module or component that has been removed and reinstalled, complete the following:
    • Verify that all hardware connections have been replaced and are properly torqued.
    • Verify that all interconnection wire harnesses are connected at both ends and properly supported by cable ties along their entire length where applicable.
  6. When service has been completed on the control pod, verify that all control power and I/O wires are connected and properly secured and supported by cable ties along their entire length when routed between enclosures.
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