Festo Контроллер крайних положений SPC11 - Manual (Page 50)

3. Installation
3-22
Festo P.BE-SPC11-SYS-EN en 1406e
3.3 Installing the electronic components
Caution
Cables with high levels of noise can cause electromagnetic
interference.
Do not place the following cables in the vicinity of cables
with high levels of interference:
– measuring system cable
– proportional directional control valve cable.
Caution
An incorrect connection assignment may cause damage to
the SPC11.
Use only the original cables. Make sure that the connection
assignments of the measuring system cables and valve
cables are correct.
Caution
Incorrect or missing earthing can cause interference.
When using the DGP(L) and the DNC(I):
Connect the drive with low impedance (short cable with
large cross-sectional area) to the earth potential, if the
drive is not mounted on an earthed machine stand.