5 | Technical data
STOBER
36
05/2019 | ID 442790.01
5.1.2.9
Power loss data of accessories
If you intend to order the drive controller with accessory parts, losses increase as follows.
Type
Absolute losses
P
V
[W]
Safety module SR6
1
Safety module SY6
2
Tab. 27: Absolute losses in the accessories
Information
Note the absolute power loss of the encoder (usually < 3 W) and of the brake when designing as well.
Loss specifications for other optional accessories can be found in the technical data of the respective accessory part.
5.1.3
Derating
When dimensioning the drive controller, observe the derating of the nominal output current as a function of the clock
frequency, surrounding temperature and installation altitude. There is no restriction for a surrounding temperature from
0 °C to 45 °C and an installation altitude of 0 m to 1000 m. The details given below apply to values outside these ranges.
5.1.3.1
Effect of the clock frequency
Changing the clock frequency f
PWM
affects the amount of noise produced by the drive, among other things. However,
increasing the clock frequency results in increased losses. During project configuration, define the highest clock frequency
and use it to determine the nominal output current I
2N,PU
for dimensioning the drive controller.
Information
Select the defined clock frequency using parameter B24. The clock frequency for double-axis controllers always applies to
both axis controllers.
