Allen-Bradley 1761-L16BBB MicroLogix 1000 16-point, 24V DC

Allen-Bradley 1761-L16BBB MicroLogix 1000 fixed-I/O controller, 10 × 24V DC (sink/source) inputs, 6 × 24V DC MOSFET (source) outputs, 24V DC powered. NJT Automation sources the 1761-L16BBB on request; send the part number for a replacement or repair quote.

Quote required. Request a quote below for pricing and delivery.

Allen-Bradley 1761-L16BBB MicroLogix 1000 16-point controller, 16-point, 24V DC – front view

Actual NJT inventory photos

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Part Number	1761-L16BBB
Price	On Request Availability and condition determine final quote.
Description	MicroLogix 1000 16-point controller, 16-point, 24V DC.
Shipping	UPS Ground included \| Next-Day Air and Worldwide Shipping available at checkout
Warranty	1-year full-function warranty provided by NJT Automation. Warranty details Included 1 year, full-function 2 years +15% of product price 3 years +25% of product price View full warranty policy
Returns	90-day free returns. View return policy
Exchange	Send us your defective 1761-L16BBB after your purchase for a 10% core credit. We also purchase old or damaged parts outright.

Availability

Sourced on request

We do not have a 1761-L16BBB on the shelf right now. We can source one through our supplier network; request a quote and we confirm availability, price and lead time before you commit.

Sourcing

Sourced through our Level 1 network of vetted US suppliers. Each unit is checked before it ships and carries the same NJT warranty and return policy as our own stock. Quotes within one hour during business hours; typical delivery 3–5 business days, next-day air available. Sourced parts are not available for local pickup.

Request Quote How Level 1 sourcing works

Repairs

1761-L16BBB Mail-In Repair Service

Part Number Decoder

MicroLogix 1000 16-point controller

1761L16BBB

MicroLogix 1000 fixed-I/O controller, 10 × 24V DC (sink/source) inputs, 6 × 24V DC MOSFET (source) outputs, 24V DC powered.

1761: BulletinMicroLogix 1000: Allen-Bradley's original fixed-I/O micro PLC (1 KB user memory, RS-232 DF1/DH-485 via 1761-NET-AIC), programmed with RSLogix 500 / Micro.
L16: I/O count16-point controller: 10 inputs and 6 outputs built in (no expansion I/O).
B: Input type24V DC (sink/source) discrete inputs.
B: Output type24V DC MOSFET (source) discrete outputs.
B: Power24V DC controller power supply.

Decoded from the Rockwell Automation catalog-number structure. Series and firmware revision are printed on the product label, not encoded here.

Intended Use

Intended for basic standalone machine control applications. MicroLogix 1000 controllers handle simple machines, pump and fan starts, small conveyors and relay-replacement jobs at a fixed point count with a single RS-232 port.

Migration Path

Rockwell Automation has discontinued the MicroLogix 1000. Published successor for the MicroLogix 1000: Micro820 (2080-LC20) or Micro850 (2080-L50E), matched on I/O count and output type.

Connected Components Workbench's RSLogix 500 program converter imports the MicroLogix program into a Micro800 project.
Wiring, mounting and the DF1 serial port differ; Micro800 controllers are programmed and networked over Ethernet or USB.

A like-for-like replacement or a repair keeps the existing program, wiring and panel layout; a migration is a project. Both are listed on this page so the choice can be made on lead time and budget.

Physical Data

Weight and DimensionsEst. weight0.42 lb (0.19 kg)H × W × D3.1 × 4.7 × 1.6 in. (80 × 120 × 40 mm)

Estimated Weight	0.19 kg (0.42 lb) Estimated from the product dimensions and typical density for this product type
Dimensions (H × W × D)	80 × 120 × 40 mm (3.1 × 4.7 × 1.6 in.) MicroLogix 1000 controller; AC-input units are 133 mm wide and 73 mm deep
Shipping Weight	0.64 kg (1.41 lb) Estimated: unit weight plus box and packing material; bills as 2 lb
Shipping Box (L × W × H)	12 × 10 × 8 in. (305 × 254 × 203 mm) Smallest standard box fitting the product with 3 in. cushioning per side

Product dimensions are typical manufacturer-published values and may differ by series or option. Unit weight is an estimate; no published figure is available for this catalog number. Shipping box and weight are estimates for freight planning; the packed unit may ship in a different box.

Datasheet

Datasheet available for download

Generated from product specifications; not an official Allen-Bradley datasheet. For an official datasheet, contact Allen-Bradley or an authorized distributor.

Similar Part Numbers

1761-L10BWB I/O count: 10-point controller; Output type: Relay discrete outputs

Allen Bradley Information

Technical SpecificationsLifecycle status

Lifecycle	Discontinued Verify current status with the manufacturer.

Can the 1761-L16BBB be repaired?

Yes. NJT Automation repairs the 1761-L16BBB by mail-in: diagnostic evaluation, component-level repair and a functional test, backed by a 1-year full-function warranty.

NJT managed repair. No evaluation fee; no repair, no charge. Prepaid UPS label both ways, $650 minimum, rush available. 1-year full-function warranty included, 2- and 3-year options.

Get a repair quoteor text photos and symptoms to (414) 331-5954

Compare quotes from independent repair technicians. Post your repair on RepairMode to receive competitive bids from experienced technicians. Each technician sets their own pricing and warranty.

Find a PLC repair specialiston RepairMode.com ↗

Common failures

Failure patterns we regularly see on MicroLogix 1000 16-point controller hardware like the 1761-L16BBB:

Output relays welded or burned on high-cycle machines
Power supply section failure leaving a dead unit
RS-232 port damaged by a hot-plugged programming cable
Program lost after a power event
Input circuit damage from field wiring shorts

Related services:All Repair Services

Photos by NJT Automation; test videos from NJT or network repair technicians.

Still have questions?

Find answers to shipping, warranties, repairs, and more.

Frequently Asked Questions

What is the 1761-L16BBB?

The Allen-Bradley 1761-L16BBB is a MicroLogix 1000 fixed-I/O controller, 10 × 24V DC (sink/source) inputs, 6 × 24V DC MOSFET (source) outputs, 24V DC powered.

What condition is it in?

The 1761-L16BBB is available in Unused surplus / Refurbished / Used condition. We can quote this part in unused surplus, refurbished, or used condition depending on availability and your preference. Specify your requirement in the RFQ.

When does this part ship?

The 1761-L16BBB is sourced on request. Request a quote and we'll confirm availability and lead time, typically a few business days.

What power input does it require?

24V DC controller power supply.

How many I/O points does it have?

16-point controller: 10 inputs and 6 outputs built in (no expansion I/O).