Allen-Bradley 1769-L32E CompactLogix Controller with 750KB Memory

The Allen-Bradley 1769-L32E is a compact and cost-effective PAC. It belongs to the 1769 CompactLogix family from Rockwell Automation. This controller features 750KB of embedded user memory. It includes one (1) Ethernet port and one (1) RS232 serial port. The 1769-L32E is perfect for machine control and medium-sized process applications.

Technical Specifications of the 1769-L32E Controller

This Allen-Bradley 1769-L32E controller delivers reliable processing for demanding tasks. Its compact form factor saves valuable panel space.

• User Memory: 750 KB.

• Communication Ports: One (1) Ethernet/IP and one (1) RS232 serial.

• Supported Protocols: EtherNet/IP, DF1, DH485, and ASCII.

• Maximum Local I/O Modules: Sixteen (16) modules.

• Maximum I/O Banks: Three (3) expansion banks (requires 2 expansion cables).

• Power Supply Distance Rating: 4 modules.

• Backplane Current Draw (5V DC): 850 mA.

• Current Draw (24V DC): 90 mA.

• Heat Dissipation: 6.5 W.

• Maximum Ethernet Connections: 100 connections.

• Maximum CIP Connections: Not specified, but typical for this class.

• Serial Cable: Requires 1747-CP3 or 1756-CP3 cable.

• Default Serial Settings: DF1 full-duplex, 19.2 Kbps, no parity, 8 data bits, 1 stop bit.

• Battery: 1769-BA replaceable lithium battery.

• Non-Volatile Memory: Compatible with 1784-CF64 or 1784-CF128 CompactFlash cards.

• Programming Languages: Relay ladder, structured text, function block, and SFC.

• Maximum Tasks: 6 tasks.

• Firmware Version: Uses version 16.00 (typical).

• Dimensions (H x W x D): 4.65 x 1.38 x 3.43 inches (118 x 35 x 87 mm).

• Product Weight: Approximately 0.66 lb (0.30 kg). Shipping weight is 2 lbs.

Environmental and Installation Specifications

The Allen-Bradley 1769-L32E operates reliably in harsh industrial environments. Follow these guidelines for best results.

• Operating Temperature: 0°C to 60°C (32°F to 140°F).

• Storage Temperature: -40°C to 85°C (-40°F to 185°F).

• Relative Humidity: 0% to 95% non-condensing.

• Vibration (Operating): 5G at 10 to 500 Hz, 0.030 in. peak-to-peak.

• Operational Shock (DIN Rail Mount): 30G.

• Operational Shock (Panel Mount): 30G.

• Non-Operational Shock (Both Mounts): 50G.

• Mounting Options: DIN rail or panel mounting.

• Mounting Torque: 1.1 to 1.8 N-m.

• Wire Size (Solid): 22 to 14 AWG.

• Wire Size (Stranded): 22 to 16 AWG.

• Wire Type: Copper, rated for 90°C.

• Enclosure Type: Open style.

• Certifications: c-UL-us, CE, C-Tick, CI.

Communication and Configuration Features

The Allen-Bradley 1769-L32E offers flexible connectivity for modern systems. Use the embedded Ethernet port for high-speed networking. Configure Ethernet using BOOTP-DHCP or through the RS232 port. The RS232 port supports DF1, DH485, and ASCII protocols. You can connect barcode scanners or other ASCII instruments directly. Use RSLinx with auto-configure to detect communication settings easily. The 1769-L32E supports up to 100 Ethernet connections. This provides excellent networking flexibility for complex machinery.

Programming and Migration Capabilities

This controller follows the IEC-61131-3 standard for PLC programming. You can mix relay ladder, structured text, function block, and SFC in one project. The Allen-Bradley 1769-L32E serves as an excellent migration platform. It replaces legacy PLC5 and SLC500 systems. Previous processor capabilities are maintained and enhanced. Always use a 1769-BA battery to retain user memory. A fully discharged battery will wipe out your user program. Install a 1784-CF64 or 1784-CF128 CompactFlash card for non-volatile memory backup.

Packing List

• One Allen-Bradley 1769-L32E CompactLogix controller.

• One 1769-BA lithium battery (installed).

• One basic installation instruction sheet.

*Note: Programming cables (1747-CP3 or 1756-CP3) and CompactFlash cards (1784-CF64 or 1784-CF128) are sold separately.*

Frequently Asked Questions (FAQ)

1. What is the memory size of the 1769-L32E controller?
The Allen-Bradley 1769-L32E has 750 KB of user memory. You can expand it using a 1784-CF128 CompactFlash card.

2. How many I/O modules can I connect to this controller?
This controller supports up to sixteen (16) local I/O modules. You can arrange them across up to three (3) expansion banks using two expansion cables.

3. What programming cable does the RS232 port require?
The RS232 port on the 1769-L32E requires a 1747-CP3 or 1756-CP3 serial cable. You can also use RSLinx with auto-configure for easy setup.

4. Can I use the 1769-L32E to replace an older PLC5 system?
Yes, the Allen-Bradley 1769-L32E is an excellent migration platform. It maintains and enhances the capabilities of legacy PLC5 and SLC500 processors.

5. Does the controller lose its program if the battery dies?
Yes, a fully discharged 1769-BA battery will wipe out the user program. Always use a 1784-CF128 CompactFlash card for non-volatile memory backup to prevent data loss.