Danfoss iC7 Motion Series Application Manual page 115

Application Guide | iC7 Series Motion
Default Value: 0
Unit: -
Additional Information for Power Unit Protection Settings
6.3.4.2
P 2.3.1.1 Retry After Fault
This parameter enables the retry functionality (fault ride-through) after 1 of the common power conversion protections has activated.
The number of retries or the retrying window depends on the power unit type and rating. The protections that can utilize retry are:
Output current ground leakage fault
l
Output overcurrent faults
l
DC-link overvoltage and undervoltage faults
l
Brake resistor or switching element short circuit faults
l
P 2.3.1.2 Smart Derate Mode
This parameter selects a level for the derating of the switching frequency whenever it is needed. The drive features multiple protection
functions that can derate the switching frequency of the drive, to avoid operating conditions that are harmful for the drive. This
parameter can be used to influence the degree of derating. Following are the descriptions of the selections for this parameter:
Table 35: Selection Descriptions
Selection Name
Maximum Derating Mode
Minimum Derating Mode
P 2.3.1.3 DC-link Voltage Ripple Response
This parameter selects a response for excessive DC-link voltage ripple protection. Excessive voltage ripples are detected when the peak-
to-peak amplitude of the DC voltage exceeds the internal limit of the drive for a long period. Both the limit and time depend on the
power unit type and rating. Following are the selection descriptions for the parameter:
Table 36: Selection Descriptions
Selection Name
Disabled
Trip
P 2.3.1.5 Rectifier Thermal Overload Response
This parameter selects a response to the reaction of the drive for rectifier thermal overload protection. Rectifier thermal overload is
detected when the drive operates for a long period at a specified rectifier current level. Specific current levels and trip times depend on
the power unit type and rating. Following are the descriptions for the selections available for the parameter:
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Parameter Type: Range (False — True)
Data Type: BOOL
Selection Description
When switching frequency derating is applied, the drive reduces the switching frequency to the
maximum. This depends on the application scenario.
When switching frequency derating is applied, the drive reduces the switching frequency to the
minimum. This depends on the application scenario.
Selection Description
No action is undertaken when excessive rippling is detected.
After detecting excessive ripples for a long period, the drive issues a fault and performs stop modu-
lation.
Parameter Number: 2355
Access Type: Read/Write
AB318753549016en-000301 / 136R0284 |
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