Pepperl+Fuchs LB Series User Manual

2018-07
24
LB Remote I/O System
Installation
Pinning on Sub-D Plugs
When installing, make sure that the transmitting and receiving lines at pin 3 and pin 8 have not
been swapped. If the lines have been swapped, the remote I/O station cannot be reached via
the fieldbus. If the lines were swapped when looping through, all nodes after this point cannot
be reached via the fieldbus.
Activating the Terminator
The fieldbus must have exactly two terminators per segment, one at the start and one at the
end. A segment usually starts at the master, while the last remote I/O unit is taken to be the end
of the segment.
Insert a terminator into the last remote I/O unit of each bus line. We recommend using sub-D
sockets with an integrated, connectible terminator. See chapter 2.6.1
Figure 3.2 Connections on the right-hand side
Pin 1 Optional shield
Pin 2 -
Pin 3 (B) RxD/TxD-P (+) receive/send data P
Pin 4 Optional control signal P
Pin 5 GND reference potential
Pin 6 + 5 V, only at the end of the line
Pin 7 -
Pin 8 (A) RxD/TxD-N (-) receive/send data N
Pin 9 Optional control signal N
9 8 7 6
5 4 3 2 1
1
2
3
4
5

Pepperl+Fuchs LB Series Specifications

General

Mounting	DIN Rail
Zone	Zone 1, Zone 2
Power Supply	24 V DC
Protection Class	IP20
System Type	Remote I/O System
Communication Protocols	PROFIBUS DP
I/O Modules	Analog, Digital
Signal Type	Analog, Digital
Number of Channels	Varies by module
Intrinsic Safety	Yes
Isolation	Channel to channel, channel to system
Output Current	Varies by module (e.g., 0.5 A, 2 A)
Connection Type	Screw terminals
Dimensions	Varies by module
Weight	Varies by module
Temperature Range	-20 ... 60 °C (-4 ... 140 °F)