Festo Электромотор MTR-DCI - Manual (Page 71)

3. Installation
3-15
Festo P.BE-MTR-DCI-DN-EN en 1209a
3.6 Field bus
3.6.1 Connecting the higher-order controller
Communication with the higher-order controller occurs via
the Fieldbus interface
(I/F) on the MTR-DCI-...
To connect to the Fieldbus there is a 9-pin Sub-D plug on the
MTR-DCI-...-DN. This connection is used for feed-in and con-
tinuation of the Fieldbus line.
Note
Only the FBA-CO-SUB-9-M12 Fieldbus adapter from Festo
guarantees IP 54 protection.
Note
The shield connection at pin 5 of the Fieldbus interface is
internally capacitively and high resistance connected to
the housing. This prevents compensating currents from
flowing via the shield of the Fieldbus cable (see Fig. 3/3).
1
Capacitive
connection
2
Housing
5 1
9 6
1
2
Fig. 3/3: Shield connection inside the MTR-DCI
In normal operation, pins 6 and 9 must be supplied with 24 V
(bus voltage and logic voltage supplies). The CAN bus
(pins 2, 3, 7) potential is relative to the bus power supply
(permits electrically isolated bus connection).