1769-L31 Programmable Automation Controller (PAC)

The Allen-Bradley 1769-L31 is a Programmable Automation Controller (PAC) that is part
of the 1769 CompactLogix controller family.
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Description

1769-L31 Programmable Automation Controller (PAC)

The Allen-Bradley 1769-L31 is a Programmable Automation Controller (PAC) that is part
of the 1769 CompactLogix controller family. This controller is ideal for use in small to medium
scale applications. This controller is provided with dual RS232 communication interfaces, specifically

channel 0 that supports DF1, DH-485 and ASCII protocols and channel 1 that supports DF1 and DH-485 protocols.

Channel 0 is a fully isolated port while Channel 1 is a non-isolated port, both supporting up to 38.4

kbps transmission speed. It also comes with a user memory of 512Kbytes and non-volatile memory

option through the 1784-CF64 or 1784-CF128 CompactFlash card.

This controller supports up to Sixteen (16) local I/O modules and may be expanded up to Three (3)

banks of Input and Output modules for system expansion. This controller must be installed not more than
Four (4) modules away from the power supply, designated by its power supply distance rating.
It is also equipped with commissioning such as I/O forcing for rapid engineering of the controller.

1769-L31

The 1769-L31 comes with easily identifiable LED indicators such as RUN, FORCE, BAT, OK, I/O, DHC0, Channel 0 and

Channel 1 LED indicators. Each of these LED operate independently to depict the current controller status.

This controller comes with a 1747-BA battery that is used to maintain contents of user memory where the program

is downloaded. This battery is a replaceable unit and provided with a Battery (BAT) status LED. Only one controller can be used in a CompactLogix system.

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