Remove Power from the System for Frame 6L
This procedure must be completed before you attempt to service any part of the 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 the drive.
- Turn off and lock out all input power, including any external power sources.
- Wait 15 minutes.
- Measure the AC input and DC bus voltage to verify that there is no voltage present:
- Measure the AC input terminals R/L1, S/L2, and T/L3; L to L and L to chassis GND (PE).
- 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 6L Power Terminal 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 |
Provide Feedback