Pepperl+Fuchs LB Series User Manual

LB Remote I/O System
Product Specifications
2018-07
13
2.4.4 Backplane and Module Compatibility
In principle, LB backplanes are compatible with all LB modules. Single-width I/O modules
occupy one slot, while double-width I/O modules occupy two slots. However, please be aware
of the following restrictions.
Temporary Overload of the Power Supply
To avoid an overload of the power supply in the startup phase as a result of increased startup
currents, the number of certain I/O modules on the backplane is limited.
Use:
 A maximum of 11 LB3*, LB4*, and LB7* single-channel I/O modules.
Each of these I/O modules consumes 9.09 % of the startup capacity.
 Or a maximum of 8 LB3*and LB7* four-channel I/O modules.
Each of these I/O modules consumes 12.5 % of the startup capacity.
LB9035A
Only use this backplane with the following I/O modules:
 Digital input: LB1*08*
 Digital output: LB6005*, LB6006*, LB6*08*, LB6*10* ... LB6*15*
 Analog input: LB3*05*, LB5*04*, LB5*05*
 Analog output: LB4*05*
2.4.5 Scope of Delivery
Base backplanes are not delivered with any accessories.
Extension backplanes are delivered with a 1-m-long double-ended cordset (LB9140A). The
double-ended cordset establishes the connection to the base backplane.
2.5 I/O Modules, Com Units, and Power Supplies
2.5.1 Function
I/O modules are signal conditioning devices. Field signals from a hazardous area are
conditioned for controllers or process control systems in a safe area. The slots for the I/O
modules on the backplane have equal status, meaning functions can be arranged side by side
as required.
Com units form the interface between the I/O modules and the process control system. A com
unit can control up to 46 I/O modules and transfer their signals across various standard buses.
The com unit converts the protocol of the bus integrated in the backplane to the protocol of the
higher-level bus system.
Power supplies provide power to the I/O modules and the associated com units on a
backplane. The slots for com units are mechanically coded on the backplane and marked
accordingly.

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)