Rockwell Automation 2364E Non-Regenerative DC Bus Supply Unit (NRU) - Manual (Page 57)

Publication 2364E-5.01 April 2002
Installing Your NRU 9-5
NRU Checks Before Power Up
1. Verify that the NRU does not have any mechanical damage.
2. Verify that the NRU does not have any loose wires or buswork.
3. Using an ohmmeter or other continuity testing device, verify that
shorts do not exist between:
Note: A small short may exist between PE and TE.
!
ATTENTION: You must perform the checks
described in this section before turning power on to the
system. Failure to do so may result in personal injury
and/or equipment damage.
ATTENTION: You must not turn on the power if the
NRU fails any of the checks described in this section.
Failure to do so may result in personal injury and/or
equipment damage.
ATTENTION: You must correct all problems before
proceeding to the next step. Failure to do so may result
in personal injury and/or equipment damage.
Source 1 Source 2 Check below if no short exists
L1 L2
L1 L3
L2 L3
L1 PE
L2 PE
L3 PE
L1 TE
L2 TE
L3 TE
DC+ Bus DC- Bus
DC+ Bus PE
DC- Bus PE
DC+ Bus TE
DC- Bus TE
PE TE