REXROTH Fv Series, Instruction Manual

Page: 136 / 222

Fig.7-53: Stall over current protection level
E4.04
Motor over load protection Factory Default 1
Setting range 0, 1, 2 Minimum unit 1
● 0: Inactive
● 1: Heat protection active at low-speed
–
With a normal asynchronous motor, head dissipation is insufficient
at low-speed running, the electronic heat protection value needs to
be set properly.
● 2: Heat protection inactive at low-speed
–
With a special motor for frequency conversion, head dissipation will
not be deteriorated at low-speed running, the electronic heat pro‐
tection value setting is unnecessary.
E4.05
Motor over load protection factor Factory Default 100.0 %
Setting range 50.0 % − 110.0 % Minimum unit 0.1 %
● If the rated converter current is different from that of the motor, motor
over load protection factor needs to be set properly for effective motor
protection.
Motor over load protection factor (%) = (Rated motor current / Rated
converter current) * 100 %
● The inverse time characteristic of over load protection is shown fig. 7-54
"Over load protection curve" on page 135 .
Bosch Rexroth AG DOK-RCON02-FV*********IB01-EN-P
Rexroth Frequency Converter Fv
134/219
Parameter Settings