Motherboard Design Guide
THT Footprint
maxon motor control
4-24
Document ID: rel7777
EPOS4 Positioning Controller
Edition: December 2017
EPOS4 EtherCAT Card Hardware Reference
© 2017 maxon motor. Subject to change without prior notice.
4.3
THT Footprint
Depending on your case of application and type of operation, considerable strong movements and high
dynamic accelerations may occur. If the case, you might wish to consider using a PCIe card edge con-
nector with retainer which will then mechanically interlock the inserted extension card in both horizontal
and vertical direction.
Possible strong mechanical loads during operation may cause hardware damage
Operation involving strong movements and high dynamic accelerations can cause an unsecured exten-
sion card to shake loose. This can lead to serious damage of hardware or equipment and to complete
failure of the system. To avoid, use a PCIe card edge connector with retainer (
Figure 4-11).
PCIe Card Edge Connector with Retainer
Figure 4-11
PCIe card edge connector with retainer – THT footprint [mm] – Top view
PCIe Card Edge Connector without Retainer
Figure 4-12
PCIe card edge connector – THT footprint [mm] – Top view
