Allen-Bradley 1768-L45

CompactLogix L45 3MB Memory Controller

MPN: 1768-L45
Category: CompactLogix 1768/1769 & Legacy Logix

Price and lead time confirmed within 1 business day

Discontinued by Rockwell Automation / Allen-Bradley — we can still source the original 1768-L45 (new, used or refurbished, subject to availability). Request a quote below.

Request a Quote

1We check stock, condition and lead time
2You get a written quote by email
3Approve it and we ship — in-stock parts within 1 business day

12-month warranty (new) · 3-month (used/refurbished)
30-day returns, no restocking fee on unused parts
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What is the Allen-Bradley 1768-L45?

Allen-Bradley 1768-L45 — CompactLogix L45 3MB Memory Controller. Discontinued by Rockwell Automation on June 30, 2020. PartnerPLC supplies new, surplus and discontinued Allen-Bradley parts — request a quote for price, condition and lead time.

Specifications

Product

Lifecycle	Discontinued
Discontinued date	June 30, 2020
Replacement category (Rockwell)	Engineering Replacement
Repair options available	Yes

Specifications

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	true
Communication medium fibre optic	false
Communication medium wireless	false
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	true
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	true
Failsafe model	false
Height	131.1 mm
Isolation voltage	30V (continuous), functional insulation type, Type tested at 500V AC @ 60s, RS-232 to system
LED indicator inputs	false
LED indicator outputs	false
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
Number of 1768 motion modules, max	4
Number of 1769 I/O modules, max	30
Number of I/O banks, max	3
Operating temperature	0 °C
Panel-mounting screw torque	1.16 Nm (10 in-lb) - use M4 or #8 screws
Power consumption	48 W
Power dissipation	8.3 W
Power supply	1768-PA3, 1768-PB3
Power supply distance rating	4 modules
Programming languages	Relay ladder, Structured text, Function block, Sequential function Chart
Protection for local controls	false
Radiated RF immunity	10 V/m with 1 kHz sine-wave 80% AM from 80...2000 MHz, 10 V/m with 200 Hz 50% Pulse 100% AM @ 900 MHz, 10 V/m with 200 Hz 50% Pulse 100% AM @ 1890 MHz, 3 V/m with 1 kHz sine-wave 80% AM from 2000...2700 MHz
Relative humidity	5...95% noncondensing
Serial cable	1756-CP3 or 1747-CP3, right angle connector to controller, straight to serial port, 3 m
Shock	Operating: 30 G
Slot width	1
Standard applications available	true
Storage temperature	-40 °C
Suitable for front mounting	true
Surge transient immunity	±2 kV line-earth (CM) on communication ports
Surrounding air temperature, max	60 °C
Total 1768 and 1769 current draw	7.6A @ 5V DC
Vibration	5 G @ 10...500 Hz
Voltage type	DC
Weight, approx	0.34 kg
Width	56.4 mm
Wire category	2 - on communication ports
With base plate	false
With display	false
With PC connection	true

1768-L45: frequently asked questions

Can I still buy the 1768-L45 now that it is discontinued?

Yes. Rockwell Automation / Allen-Bradley has discontinued the 1768-L45, but sourcing discontinued parts is what PartnerPLC specialises in — new old stock, used and refurbished units. Request a quote and we'll confirm availability, condition and lead time.

When can 1768-L45 be shipped?

1768-L45 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.

Can I pick up 1768-L45 in person?

Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.

Is express delivery available?

Yes — mention it when you request a quote for 1768-L45 and we'll include express shipping options in our reply.

My factory is down and I need this urgently — can you help?

For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for 1768-L45, subject to availability and destination.