Remove Power from the System for Frames 5, 6 and 6L

This procedure must be completed before attempting to service any part of a frame 5, 6, or 6L liquid cooled drive.
ATTENTION:
Risk of injury or equipment damage exists.
Remove power before you remove or make cable connections. When you remove or insert a cable connector with power applied, an electric arc can occur. An electric arc can cause personal injury or property damage in the following ways:
  • An electric arc can send an erroneous signal to system field devices, which can cause unintended machine motion
  • An electric arc can cause an explosion in a hazardous environment
Electric arcs cause excessive wear to contacts on both the module and its receiving connector. Worn contacts can create electrical resistance.
Follow these steps to remove power from a frame 5, 6 and 6L drive.
  1. Turn off and lock out all input power, including any external power sources.
  2. Wait 15 minutes.
  3. If present, remove the conduit box cover from the drive.
  4. To verify that there is no voltage present, measure the AC input and DC bus voltage:
    • For AC input drives and bus supplies only, measure the AC input terminals R/L1, S/L2, and T/L3, L to L and L to chassis GND (PE).
    • For frames 5 and 6 products, measure the DC output terminals; DC+ to DC–, DC+ to chassis GND (PE), and DC– to chassis GND (PE).
    • For frame 6L, measure the DC bus voltage between the DC+ and DC– testpoint sockets on the bottom of the chassis. Also measure between the DC+ testpoint and the PE ground bus bar (GND) and the DC– testpoint and PE ground bus bar (GND).
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
Frame 6L Power Terminal Identification
frame 6L power terminals and DC testpoints identification
Item
Name
Description
A
PE grounding bus
Termination point to chassis ground
B
R/L1, S/L2, T/L3
AC line input power terminals
C
U/T1, V/T2, W/T3
AC output motor terminals
D
DC+, DC–
DC bus testpoint sockets
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