1768-L45

Technical specifications

Manufacturer

Allen-Bradley

Manufacturer part no.

1768-L45

Type

CompactLogix controller

Application

PLC controller

Used with

1768 and 1769 Compact I/O

Communication

RS232

Height

131.6mm, 5.18"

Isolation

3 V (continuous), functional insulation type, Type tested at 5V AC @ 6s; RS-232 to system

Memory

3 MB

1768 current draw

5.6A @ 5V DC

1769 current draw

2.0A @ 5V DC

Available user memory

3 MB

Backplane current draw

2.0A @ 24V DC

Communication bus

RS-232

Communication medium copper

Yes

Communication ports

RS-232, Fully isolated, 38.4 Kbps max

Communications protocol

Other

Conducted RF immunity

10V rms with 1 kHz sine-wave 80% AM from 150 kHz...80 MHz

Depth

121.1 mm

DIN-rail mounting

Yes

EFT/B immunity

±4kV @ 5kHz on communication ports

Emissions

CISPR 11 (IEC 61000-6-4)

Enclosure type rating

None (open-style)

ESD immunity

6 kV contact discharges, 8 kV air discharges

Expandable

Yes

Isolation voltage

30V (continuous), functional insulation type, Type tested at 500V AC @ 60s, RS-232 to system

Module expansion capacity

Two 1768 modules, Sixteen 1769 modules

Module location

DIN rail or panel mount

Number of 1768 communication modules, max

2

Number of 1768 modules, max

4

Technical documents (1)

• Rockwell Automation technical data 1769-TD005

Key features

• Isolated RS-232 port, 38.4 Kbps max
• Up to 30 1769 I/O modules
• Up to four 1768 modules
• DIN rail or panel mounting
• Programmed in Relay ladder, Structured text, Function block, Sequential function Chart

About the Allen-Bradley 1768-L45

The Allen-Bradley 1768-L45 is a CompactLogix controller on the 1768 CompactLogix platform. Rockwell's product page gives it 3 MB of memory, an RS-232 port and room for up to four 1768 modules and 30 1769 I/O modules. Rockwell Automation lists it as discontinued.

What is the 1768-L45 used for?

The 1768-L45 runs the control program on a machine or line, with 1768 modules beside it and 1769 Compact I/O in up to three banks.

Lifecycle and successor

Discontinued.

Before you order

What to photograph or confirm so the right unit is quoted.

Check the catalog number 1768-L45 on the controller's label, with the series letter and firmware revision. Send us a photo of the label and we will confirm the details before quoting.