29
Electrical installation
Operation Manual ServoOne CM-L and ServoOne CM-A
ID no.: 1800.208B.1-00 Date: 03/2020
Electrical installation
4.4 Protective earth conductor connection
Step
Action
Comment
1.
Connect the PE connections on the
ServoOne CM-A active supply unit, the
ServoOne CM-L charging module, the axis controllers
and the controller
in a star topology
to the PE
rail (main earth) in the switch cabinet.
Each device in the axis group must be
earthed!
2.
Connect the protective earth conductor connections
on all other components, such as mains filter*, mains
choke*, LC filter*, etc. in a
star topology
to the
PE rail (main earth) in the switch cabinet.
*) Components are only required for the
ServoOne CM-A or ServoOne CM-D.
3.
Please take into account the local and national reg-
ulations and conditions. The minimum cross-section
of the protective earth conductor must comply with
the local safety requirements for protective earth
conductors for equipment with high leakage current.
See “Figure 4.6 Protective earth conductor connection for the devices, SystemOne CM” on page 29.
4.4.1
PE connection in accordance with DIN EN 61800-5-1
The leakage current is > 3.5 mA. This situation results in the following minimum
requirements for the protective earth conductor cross-section as a function of the phase
conductor cross-section, as per EN 61800-5-1.
Cross-section of the phase conductors Minimum cross-section of the protective earth conductor
Q ≤ 16 mm
2
Q however at least 10 mm
2
(Cu)
16 mm
2
< Q ≤ 35 mm
2
16 mm
2
Q > 35 mm
2
Q/2
Table 4.4
Protective earth conductor cross-section
CAUTION!
Risk of injury due to incorrect wiring!
Carelessness may result in injuries.
The protective earth conductor connection is a safety feature. Therefore, make sure that all
connections have good contact and are sufficiently secure that they cannot come loose.
4.4.2
Connection principle
5
PE
14
1
2
3
4
5
6
10
7
9
9
9
8
13
12
(1) Mains filter
(2) MotionOne CM controller
(3) ServoOne SO CM-S switched-mode power supply
(4) ServoOne CM-L charging module
(5) ServoOne CM-A or ServoOne CM-D
(6) ServoOne CM-C capacitance module
(7) ServoOne CM axis controller
(8) Mains choke
(9) PE rail
(10) Star topology earthing
(11) Backing plate
(12) LC filter
Figure 4.6
Protective earth conductor connection for the devices, SystemOne CM
