2-2
Start Up/Troubleshooting
PowerFlex Diode Bus Supply User Manual
Publication 20T-UM001D-EN-P
Start-Up
Before Applying Power to the Diode Bus Supply
❏
1. Confirm that all inputs and outputs are connected to the correct
terminals and are properly torqued.
❏
2. Using an ohmmeter or other continuity testing device, verify that shorts
do not exist between Source 1 and Source 2.
❏
3. Verify that AC line power at the disconnect device is within the rated
value of the Diode Bus Supply. See
.
❏
4. Verify that the Bus Supply Overtemperature is correctly wired.
This normally closed contact output can be used to set alarms and to
stop the drive(s). Verify that they have been wired correctly according
to the user’s specification. See
Control Wiring Examples on page 1-9
❏
5. Verify that the jumper between control terminals 12 and GND and
jumper P4 (on DFPS circuit board) are present on grounded supply
lines (default) or removed on non-solid grounded supply lines. See
Disconnecting MOVs and RFI Filter Capacitors on page 1-10
for more
information.
Applying AC Power to the Diode Bus Supply
❏
1. Apply AC power to the Diode Bus Supply.
The green Power On LED should be on if power is applied to terminals
L1 (R), L2 (S), and L3 (T).
❏
2. If the green Power On LED is off at this point, see
Source 1
Source 2
Checkmark Below if No Short Exists
L1
L2
L1
L3
L2
L3
L1
PE
L2
PE
L3
PE
L1
DC+ Bus
L2
DC+ Bus
L3
DC+ Bus
L1
DC- Bus
L2
DC- Bus
L3
DC- Bus
DC+ Bus
DC- Bus
DC+ Bus
PE
DC Bus
PE