Bosch Rexroth EFC 3600 Operating Instructions Manual page 121

DOK-RCON03-EFC-3600***-IT01-EN-P
Rexroth Frequency Converter EFC 3600
Minimum unit 0.1 %
Factory default 25.0 %
● "Low speed derating frequency" means that when the frequency is higher than
[E4.04], the allowed continuous current is the rated current [S2.04]. When the fre‐
quency is lower than [E4.04], the allowed continuous current is linear reduced to
zero speed load [S2.23] at standstill.
● "Zero speed load" means the allowed continuous current (percent of rated current)
at standstill.
At low speed, the cooling of most motors may get worse, so the allowed continuous
current is getting lower. In this case, the allowed time for overload is getting shorter. For
a motor with external cooling, zero speed load [E4.05] is set to 100 %, and the low
speed derating is switched off.
Example:
Fig.8-46: Low speed derating frequency and zero speed load
With:
● Low speed derating frequency [E4.04]=30 Hz
● Zero speed load [E4.05]=25 %
● Thermal time constant [S2.23]=280s
E4.06 Phase loss protection
Setting range 0~3
Minimum unit 1
Factory default 3
● 0: Both input and output phase loss protection active
● 1: Only input phase loss protection active
● 2: Only output phase loss protection active
● 3: Both input and output phase loss protection inactive
Bosch Rexroth AG
Parameter Settings
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