Electrical Connection; Pwr In - Voltage Supply / Switching Input/Output - Leuze electronic MA 248i Original Operating Instructions

7.2

Electrical connection

The MA 248i
The voltage supply (PWR IN) as well as the switching inputs/outputs (PWR OUT or PWR IN)
are connected there. The number and function of the switching inputs/outputs is dependent
on the connected end device. Two additional M12 sockets are used for connection to the
fieldbus. Both of these connections are D-coded.
An internal RS 232 interface is used for connecting the respective Leuze device. Another
internal RS 232 interface functions as a service interface for configuring the connected
device via a serial null modem cable.
PWR IN
SWIO_2
2
GND
3 1
5
4
FE
SWIO_1
M12 connector
(A-coded)
Figure 7.2:
Described in detail in the following are the individual connections and pin assignments.
Attention!
Voltage supply and bus cable are coded in the same way. Please observe the printed con-
nection designations
7.2.1 PWR IN – voltage supply / switching input/output
PWR IN
SWIO_2
GND
3
FE
SWIO_1
M12 connector
(A-coded)
Table 7.1:
Leuze electronic
features two M12 connectors/sockets for voltage supply; each is A-coded.
PWR OUT
SWIO_2
2
VIN VOUT 1
3
5
4
FE
SWIO_1
M12 socket
(A-coded)
MA 248 connections
PWR IN (5-pin connector, A-coded)
Pin
1
2
2
3
VIN
1
5
4
4
5
Thread
PWR IN pin assignment
LEUZE Device
GND
Name
VIN Positive supply voltage +18 ... +30VDC
SWIO_2
GND
SWIO_1
FE
FE
MA 248i
Electrical connection
HOST / BUS IN
RD+
2
TD+ 1 TD-
3
4
RD-
M12 socket
(D-coded)
Remark
Switching input/switching output 2
Negative supply voltage 0VDC
Switching input/switching output 1
Functional earth
Functional earth (housing)
BUS OUT
RD+
2
TD+ 1 TD-
3
4
RD-
M12 socket
(D-coded)
31