REXROTH Fv Series, Instruction Manual

Page: 147 / 222

9.2 Derating of electrical data
9.2.1 Derating and ambient temperature
Where installation conditions differ, the following performance data are re‐
duced in accordance with the diagram:
Frequency converter:
●
continuous power output
● continuous current output
Use outside of the indicated installation conditions is not allowed,
even if the performance data are additionally reduced.
As the ambient temperature increases, the capacity utilization of the devices
is reduced according to fig. 9-2 "Derating and ambient temperature" on page
145 .
f
Ta
load factor
T
a_work
ambient temperature range for operation with nominal data
T
a_work_red
ambient temperature range for operation with reduced nominal data
Fig.9-2: Derating and ambient temperature
9.2.2 Derating and mains voltage
Reduced over current based on mains voltage
The Fv frequency converters are thermally dimensioned for the rated cur‐
rents. This rated current is available with the specified rated voltage. With de‐
viating voltages in the permissible range, please note the following:
●
Umains<Urated: With mains voltages below the rated voltage, no higher
currents may be withdrawn to ensure that the dissipated power remains
current.
● Umains>Urated: With mains voltages greater than the rated voltage, a
reduction of the permissible output permanent currents takes place to
compensate for the increased switching losses.
DOK-RCON02-FV*********IB01-EN-P
Rexroth Frequency Converter Fv Bosch Rexroth AG 145/219
Technical Data