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7 Installation
Connecting the communication card
Installation and operation manual M70A_260 Flex RPI703M26000 EU V1.1 EN 2022-08-02
7.6
Connecting the communication card
The connections for RS485, the dry contacts, the
digital inputs and the external power-off (EPO)
are all on the communication card. This means
that the installation work can be combined.
NOTICE
Water ingress.
►
All sealing caps removed during installa-
tion should be stored for later use (e.g. (e.g.
transportation or storage).
7.6.1 Connections on the communication card
5
4
1
3
2
6
Fig. 7.1:
Components of the communication card
1
Digital inputs and external power-off (terminal block)
2
Power supply for internal fan 1
2
DIP switch for the RS485 termination resistor
3
2 x dry contacts (terminal block)
4
RS485 (terminal block)
5
Protection against electromagnetic interference (EMI)
Connection
Connection type
2x RS485 (DATA+ and DATA–)
Terminal block
1x VCC (12 V, 0.5 A)
Terminal block
6x digital inputs
Terminal block
2x dry contacts
Terminal block
1x external power-off (EPO)
Terminal block
Table 7.2.: Connections on the communication card
Cable type
Shielded and twisted pair cable
(CAT5 or CAT6)
Cable diameter
2 x 7.2 / 8 / 10 mm
Wire cross section
0.25 ... 1.5 mm
2
Table 7.3.:
Specification of the communication cable
The communication cable is required for connection to the follow-
ing units:
●
Data logger
●
External alarm unit
●
Ripple control receiver
● External power-off
Lay the communication cable with a suitable clearance to the AC
and DC cables to prevent interference in the data connection.
