Keba KeDrive D3-DA BG3 - Earth Conductor, Isolation, and Supply Voltages

4.4 Protective earth conductor connection
Step Action Comment
1.
Connect the PE connections on the supply unit, the axis controllers
and the controller in a star topology to the PE rail (main earth)
in the switch cabinet (see Figure 4.7).
Tightening torques for PE connection on the device:
M10: 22 Nm
M6: 4.8 Nm
Every device in the axis group
must be earthed!
2.
Also connect the protective earth conductor connections on all
other components, such as mains lter*), mains choke*) etc. in a
star topology to the PE rail (main earth) in the switch cabinet.
*) Components are
only required for the
KeDrive D3-DP supply unit.
3.
Please take into account the local and national regulations 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.
4.4.1 PE connection according to DIN EN 61800-5-1
The leakage current is > 3.5 mA. This situation results in the following minimum re-
quirements 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 corresponding
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 4.13 Protective earth conductor cross-section
NOTE:
During operation with BG4 supply unit connected in parallel, the specic
information about the protective earth conductor connection and cross-
section is to be noted (see Operation Manual KeDrive D3-DP BG3 and BG4,
art. no.: 1804.201B.x)
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 sufciently secure that they cannot come loose.
You will nd a wiring example for the axis group in which you will also nd detailed infor-
mation about the protective earth conductor connections in Figure 4.22.
35
1 Electrical installation
Operation Manual KeDrive D3-DA BG3 and BG4
1804.200B.1-01 Date: 03/2023
Electrical installation