Festo Электромотор MTR-DCI - Manual (Page 67)

3. Installation
3-15
Festo P.BE-MTR-DCI-CO-EN en 1209a
3.6 Controller
Communication with the higher-order controller is made via
the control connection on the MTR-DCI-...
There is a 9-pin Sub-D plug on the MTR-DCI-...-CO for connect-
ing the field bus. This connection serves for the incoming and
continuing field bus cables.
Note
Only the field bus plug FBA-CO-SUB-9-M12 from Festo
complies with IP 54.
Note
The screening connection at pin 5 of the fieldbus interface
is capacitively connected internally with high impedance to
the housing. This prevents compensating currents from
flowing via the screening of the fieldbus cable (see
Fig. 3/3).
1
Capacitive
connection
2
Housing
5 1
9 6
1
2
Fig. 3/3: Screening connection inside the MTR-DCI