bonitron M3645, Справочное руководство

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M3645
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 If there are active faults, the unit will not operate, and the attached drive
will trip during braking.
 Check DC bus voltage at fuses.
 Check DC bus polarity at fuses.
 Check DC bus fuses.
 Ensure unit is not faulting during operation. Some faults may clear
themselves, such as phase loss, but the fault recall will show that they
have occurred. Check the fault records to see if the regen unit has other
faults that would cause the operation to stop. Once the regen stops
operating, the attached drive will fault on overvoltage during heavy
braking.
 This can also mean that the regen is too small to handle the braking
requirements. If the braking energy is too high for the regen to dissipate,
the regen will go into current limit. While the regen is operating in current
limit, the DC bus may continue to rise to the point that the drive will trip.
The current being regenerated can be checked with the digital display or
with a separate meter in the DC link. Verify proper sizing of the regen
unit. If the regen is operating in current limit, the regen may be
undersized for the application.
 If the regen and drive are connected to the AC line through a transformer,
the transformer may not be large enough to handle the regenerated
currents. See Section 3.4.1.1 for transformer sizing instructions.
 With 300A units, confirm that the phase rotation of the AC control power
connections between the reactor and the transistor module match the
power connections.
5.3.5.
F
EEDBACK
U
NDERVOLTAGE
Reset the M3645 by toggling the enable input. (4.5.2)
If the fault returns, contact Bonitron for assistance.
5.3.6.
O
VERTEMPERATURE
Check the ambient temperature. If the temperature is above 40°C, the unit
may not be able to cool properly at full load. Ensure that there is adequate
clearance and airflow in the area where the regen is installed.
Check to make sure the fan is operating. The fan will operate for a few
seconds after power up. Cycle power to the regen, and listen for the fan
operation. If it does not operate, check for obstruction.
If the unit is cool, and still showing an overtemperature condition, contact
Bonitron for assistance.
If an overtemperature fault is listed in the fault log in conjunction with a
Precharge Not Complete fault, this indicates that control power to the unit has
been reset. No actual overtemperature condition has occurred.
5.3.7.
DC
OVERVOLTAGE ON
R
EGEN
This fault can be reset by toggling the Enable input. (4.5.2) Check all the
conditions described in Section 5.3.3.
Confirm Enable input is active, and the unit is ready to operate.
Confirm with a voltmeter that the DC bus polarity matches the markings on
the unit.
Check the fault records to see if other faults may be keeping the unit from
operating.