bonitron M3460, Руководство для пользователей

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D_M3460_D_CMAN_vall_00a 4/17/2020
15
3.4.1.1.
AC L
INE
(L1, L2, L3) C
ONNECTIONS
The AC input to the M3460R can temporarily reach up to 200% of the
normal input current during a power quality event. Size the upstream
current protection devices accordingly, so that the incoming AC will not
be interrupted by the temporary power draw.
During a power quality event, the AC input to the drive will not be drawing
current. Sizing the incoming AC feed to supply both the drive and the
M3460R simultaneously is not necessary. Even though the input current
during a power quality event may be higher than the normal input current,
this temporary overload is allowed by most codes without upsizing the
normal AC feed bus.
Due to the increased currents in the AC feed during a power quality event,
the total voltage drop of the incoming AC feed should be considered to
make sure the voltage doesn't dip too low.
If line chokes are to be used in the system, the M3460R must be installed
on the load side of these chokes. This minimizes the possibility of
circulating currents through the M3460R and converter section of the
VFD.
There is no need to connect the AC line to the M3460R if an ultracapacitor
bank is being used. The DC connections from the ultracapacitor bank can
be made to any two of the AC line connections so that the existing fuses
can be used for protection. Please note that one terminal will not be
connected. See Figure 3-4.
3.4.1.2.
S
TORAGE
B
US
(+ -) C
ONNECTIONS
If an electrolytic capacitor bank is used with the M3460R, the input can
be attached directly to the diode bus bars marked Storage Bus. External
fusing between the capacitor bank and the M3460R is recommended.
The M3460B battery bank connections are made at the Storage Bus fuse
blocks at the top of the module.
Make sure the polarity is correct for these connections, as failure to do
so can cause severe damage to the system.
DANGER!
F
OR SYSTEMS THAT HAVE
DC
STORAGE
,
ALWAYS MEASURE
DC
VOLTAGES AND
FOLLOW PROPER PRECAUTIONS TO ENSURE THEY ARE AT SAFE LEVELS BEFORE
MAKING CONNECTIONS
.
3.4.1.3.
D
RIVE
B
US
(+ -) C
ONNECTIONS
The M3460 must have a DC bus connection directly to the DC bus filter
capacitors within the drives. Connections cannot be made through the
braking terminals or with precharge resistors or DC link chokes between
the output of the M3460 and the DC bus capacitors in the drive. Consult
the manufacturers' documentation or contact Bonitron for further
assistance.
Make sure the polarity is correct for these connections, as failure to do
so can cause severe damage to the system.
DANGER!
F
OR SYSTEMS THAT HAVE
DC
STORAGE
,
ALWAYS MEASURE
DC
VOLTAGES AND
FOLLOW PROPER PRECAUTIONS TO ENSURE THEY ARE AT SAFE LEVELS BEFORE
MAKING CONNECTIONS
.