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Bosch Rexroth IndraDrive CsDrive System with HCS01 Project Planning Manual page 74

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Bosch Rexroth AG
Combining the individual components
Calculation formula
Example of calculation
HCS01.1E-W0028-A-03-B-ET-EC-PB-L4-NN-FW
Basic device
Optional connection point
Optional connection point
12 V encoder system of motor
Motor holding brake
Load at digital output
Total power consumption P
Table 3: Power requirements of the external loads
External load
5 V encoder system
12 V encoder system
Load at digital output
Motor holding brake
I
1)
encoder
I
2)
load
I
3)
brake
U
4)
N3
The sum of the power consumption of all connected encoder
5)
systems incl. encoder emulation cannot exceed 6 W.
Tab. 4-23:
Power requirements of the external loads
The total power consumption (P
controller is calculated with:
P
= P
+ ΣP
N3
basic device
Component
HCS01.1E-W0028-A-03-B-ET-EC
PROFIBUS "PB"
STO/SBC "L4"
12 V / 200 mA
300 mA
250 mA
= P
N3
Basic device
P
= 17.3 W + 1.1 W + 1.0 W + 3.0 W + 7.2 W + 6.0 W = 35.6 W
N3
Tab. 4-24:
Example of calculation
DOK-INDRV*-HCS01******-PR05-EN-P
Rexroth IndraDrive CsDrive Systems with HCS01
Power requirement
P = I
× 5 V × 1.75
Encoder
P = I
x 12 V x 1.25
Encoder
P = I
x U
2), 4)
Load
N3
P = I
x U
3), 4)
Brake
N3
: Current consumption of encoder system
: Current consumption of external load
: Current consumption of motor holding brake
: Control voltage supply of drive controller
) from the 24 V control voltage of a drive
N3
+ ΣP
optional connection points
P = I
× 12 V × 1.25 = 0.2 A × 15 V = 3.0 W
Encoder
P = I
Brake
P = I
Load
+ ΣP
Optional connection points
1), 5)
1), 5)
external loads
Power requirement
17.3 W
1.1 W
1.0 W
× U
= 0.3 A × 24 V = 7.2 W
N3
× U
= 0.25 A × 24 V = 6.0 W
N3
+ ΣP
External loads
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