Bosch Rexroth EFC 3600 Operating Instructions Manual page 58

Bosch Rexroth AG
Parameter Settings
b0.20 Frequency converter rated voltage setting
200 V class: 200 ~ 240 V
Setting range
400 V class: 380 ~ 480 V
Minimum unit 1 V
200 V class: 220 V
Factory default
400 V class: 380 V
Used for analog output function selection "terminal output voltage". Analog output volt‐
age 10 V corresponds to 1.2 times of [b0.20], for example:
[b0.20]=220 V, the terminal output voltage 0 ~ 264 V corresponds to 0 / 2 ~ 10 V, see
descriptions in parameter [E1.30] ~ [E1.32].
b0.21 Carrier frequency
Setting range 1 ~ 15 kHz
Minimum unit 1 kHz
Factory default 4 kHz
● A higher PWM frequency may reduce the motor noise, but increase the ground cur‐
rent leakage and interferences caused by the frequency converter. Also the power
loss and temperature will be increased.
● A lower PWM frequency will reduce the power loss and temperature of frequency
converter.
For the temperature, voltage and current derating figures related to PWM frequency,
please refer to chapter 10.3 "Derating of Electrical Data" on page
To obtain the best performance of the output frequency, the carrier fre‐
quency needs to be set as below:
Set [b0.21] ≥10 ("Max. frequency" [b1.05]).
b0.22 Automatic adjustment of carrier frequency
Setting range 0: OFF; 1: ON
Minimum unit 1
Factory default 0
The frequency converter is able to adjust the PWM frequency automatically based on
its own temperature when this function is activated.
b0.30 Running monitoring display
Setting range 0 ~ 20
Minimum unit 1
Factory default 0
b0.31 Stop monitoring display
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DOK-RCON03-EFC-3600***-IT01-EN-P
Rexroth Frequency Converter EFC 3600
145.