Nru checks before power up, Nru checks before power up -5 – Rockwell Automation 2364E Non-Regenerative DC Bus Supply Unit (NRU) User 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
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