bonitron M3460D, Руководство для пользователей

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User’s Manual
15
4.
O
PERATION
4.1.
F
UNCTIONAL
D
ESCRIPTION
The Diode Sharing Module isolates the DC bus connections of multiple drives to keep
from generating circulation currents in the AC bridges of the drives. This ensures that
the input bridges of each drive do not supply power to other drives in the network, or
allow circulating currents between drives. These currents can cause bridge
overheating and damage to the drives.
4.2.
F
EATURES
These modules can come with integral fusing for systems that require added protection
of the DC bus.
4.3.
S
TARTUP
4.3.1.
P
RE
-P
OWER
C
HECKS
Ensure that all connections are tight, DC bus polarity is correct, and that the
drives are connected to the proper terminals. Check for exposed conductors
that may lead to inadvertent contact or shorting. Ensure that the current
rating of the module is suitable for the application.
4.3.2.
S
TARTUP
P
ROCEDURE
A
ND
C
HECKS
•
Check the DC Bus at the RT+ and RT- links, and make sure the polarities
are correct.
•
Check each drive + and
– connection, and make sure they are correct.
•
Cross connection of the drive busses can cause catastrophic damage to
the drives or the Ride-Thru Module.
•
Make sure the incoming line voltage is within tolerance of the drive
system and the diode sharing module.
•
Apply power to the drive system.
•
Load the drive system and check for circulating currents between the
drives using a clamp on ammeter at the drive + and
– terminals. This
current should be zero unless the drives are being supplied by the Ride-
Thru Module.
4.4.
O
PERATIONAL
A
DJUSTMENTS
There are no adjustments necessary to these modules.