Bosch rexroth EFC 610 Series Operating Instructions Manual page 196

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Functions and Parameters
Fig. 12-25: Derating at low speed
Low speed derating frequency
●
When the output frequency is higher than [C1.75] 'Low speed derating fre-
quency', the allowed continuous current is [C1.07] 'Motor rated current'.
When the output frequency is lower than [C1.75], the allowed continuous cur-
rent is reduced according to the above curve, with the lowest value to [C1.76]
'Zero speed load' at standstill.
Zero speed load
●
Zero speed load is the allowed continuous current (percentage of rated cur-
rent) at standstill.
For a motor with external cooling, [C1.76] 'Zero speed load' is set to
100 %, and the low speed derating function is inactive.
Bosch Rexroth AG R912005854_Edition 09
Rexroth Frequency Converter EFC x610
Series