Siemens OpenAir GBB Series - Page 23

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Siemens Rotary actuators without spring return GBB/GIB..1 CE1Z4626en
Smart Infrastructure Wiring notes 2019-11-28
The diagram applies to AC 24 V and shows the permissible line length L as a function
of consumption P and as a parameter of the cross-sectional area.
300
200
100
0
0
8 16 24 32
L [m]
P
[VA, W]
2.5 mm²
1.5 mm²
1 mm²
0.5 mm²
0.75 mm²
4626D02en
· The values in [VA, W] on the P-axis are allocated to the permissible voltage drops
(DU/2U = 4 %) on line L as per the above table and to the P&I diagram.
· P is the primary power consumption for all actuators connected in parallel.
U
D
U/2
D
U/2
R
L
R
L
L
L
U
-D
U
4614D09
M
The maximum line length can be calculated using the following formula.
Operating voltage
Perm. voltage
drop / line
Formula for line length
AC 24 V
4 % of AC 24 V
L =
P
A1313 ·
[m]
1 % of DC 10 V
L =
(DC)I
A5.47 ·
[m]
AC 230 V 2 % of AC 230 V
L = 46 ·
P
A1313 ·
[m]
A Cross-sectional area in [mm
2
]
L Permissible line length in [m]
P Power consumption in [VA] or [W];
the value is printed on the actuator's type field
I(DC) DC current portion in line G0 in [A]
Line length/
consumption AC 24 V
Notes on diagram
P&I diagram:
Voltage drop on the
supply lines
Formula for line length