Pilz Cable PMCprimoDrive>Mod-Profibus:L=0,45m - Manual (Page 28)

Wiring
7-2 Operating Manual: PMCtendo AC
Earthing, shielding and EMC
• On the servo motors, the connection to PE is established via the supply voltage cable
(see section entitled “Connections for supply voltage, thermal switch and holding
brake”).
• If necessary, use a toroidal core for the supply voltage cable, or a motor throttle close
to the servo amplifier. Please refer to the information stated in the operating manual
of the servo amplifier you are using.
• You will need shielded cable for data and control lines.
- Earth the cable shield connection on both sides (e.g. on a bus bar).
- If you are using longer cables and there is the possibility of transient currents, these
can be prevented by using equipotential bonding cables. If you are unable to use
equipotential bonding cables, connect the shield at one end.
• Shields should be connected over a wide surface area (low impedance), using
metallised connector housings or EMC-compliant cable screw connections. Use the
EMC cable screw connection supplied with the unit.
• An appropriate connection material (e.g. shielded terminals) should be used to
connect the cable shield to the earth bar or bus bar.
Cable
Cable shield
Shielded terminal
Earth bar or
bus bar
Cable
Fig. 7-2: Earthing the cable shield (example)
Fig. 7-1: EMC screw connection
Cable shield
Housing
EMC contact surface
Cable