B&R  DI426  digital input module

B&R  DI426  digital input module

Material number:

2DI426.6

Description:

2010 digital input module 32 inputs 24 VDC, 1 msec, sink/source 8 electrically isolated input groups Order terminal block 1 x TB140 separately!

There is a combined I/O and system bus on every B&R 2005 backplane. Therefore, system and

I/O modules can be inserted on the main backplane. The backplane where the CPU is installed

is the main backplane.

This has the following advantage:

• Only one backplane type is required for main and expansion backplanes (eases stock

management)

Differences to B&R 2010:

• Slower access of I/O data (only applies to the main backplane)

• Limited number of module slots per backplane

• More space in the switching cabinet

The supply voltage for the B&R 2005 control system is provided by a power supply that must be

connected to the far left slot on the backplane

B&R 2005 modules are normally connected using a single row terminal block.

Pin assignments for the individual modules are described in Chapter 3 “B&R 2005 Modules”.

The construction of the terminal block has the following advantages for the PLC user:

• The terminal block can be easily removed using two ejection levers on the module

• The terminal blocks are available with screw clamps and also with cage clamps

B&R 2005 CPUs have the memory for both application programs and the operating system

either integrated in the module or provided on an additional Compact Flash memory card.

The main backplane can hold a maximum of 11 I/O and/or system modules. However, it is still

possible to expand. To do this, the following modules are required:

6.1.1  Expansion Master

The EX350 bus controller is used as an expansion master: The bus controller is a power supply

insert.

6.1.2  Expansion Slave

A power supply module is used as an expansion slave. This power supply module is equipped

with an additional interface, which allows connection of I/O bus expansions. The power supply

must be plugged into the far-left slot of an expansion backplane. A maximum of 4 expansion

backplanes can be connected.

The connection cable between the expansion master and expansion slave is available in two

lengths (1 m or 2 m)

6.2  Remote I/O Bus

The remote I/O allows remote I/O modules (up to 1200 m) to be connected to the CPU. The

following modules are required when implementing a remote I/O system:

6.2.1  Remote Master

The remote master is a system module and must be inserted on the main backplane (combined

system bus and I/O bus). Up to 31 remote slaves can be connected to a remote master.

6.2.2  Remote Slave

The EX250 bus controller is used as remote slave. The bus controller is a power supply insert.

The remote slave communicates via a shielded twisted pair cable with the remote master. A

maximum of 13 I/O modules are operated on each remote slave.

6.2.3  Cabling

In a remote I/O system, remote slaves at distances of up to 1200 m are connected with the

remote master using a shielded twisted pair cable.