92
Installation and user guide
Rev: 4.0
NTT 240/460
Operation mode
6.12 Braking resistor
Into
Advanced Setup
item, into
Braking Resistor
sub-item, drive braking resistor parameters can be set. If braking
resistor is provided by H.D.T., all parameters are will be default setting in NTT 240/460 drive.
Parameters are shown below:
•
Braking resistor value (from 10Ω to 10000Ω)
•
Nominal/rated power (from 30W to 3000W)
•
Overload time (from 1s to 255s): time until it’s possible to provide to braking resistor a power 10 times
grater than rated one.
!
NOTES:
•
To ensure operation during braking conditions, please enter correct parameters related to suitable
resistor; please, pay attention to enter correct value to the Overload Time.
•
Drive will provide alarm if theoretical calculation for thermal behaviour has detected an overheating
of resistor due to an heavy braking cycle not supported by resistor features. For further information,
please see
“Ch. 8 Drive status and diagnostics” pag. 120
•
Other major power resistors are available for heavy braking cycles: for information please contact our
technical department.
Summary of Contents for NTT 240
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