The Allen-Bradley 1769-L32C is a modular Programmable Automation Controller from the CompactLogix family. Specifically, this controller is designed for applications that require ControlNet network integration. It features 750 KB of user memory and supports up to 16 local I/O modules across three I/O banks.
Furthermore, the 1769-L32C includes multiple communication ports: an RS-232 serial port, a NAP (Network Access Port), and a ControlNet port on channel 4. This controller plays a vital role in ControlNet networks because it stores parameters and network configuration data after startup. Additionally, it automatically functions as a backup for network data, enhancing system reliability.
The 1769-L32C provides 750 KB of user memory, offering ample storage for medium-sized control programs. It supports 100 connections, enabling communication with multiple devices simultaneously. The controller draws 650 mA at 5V DC and 40 mA at 24V DC from the backplane, with a total power dissipation of 4.21 W.
For non-volatile program storage, the 1769-L32C supports CompactFlash memory cards. This feature allows users to save and restore application programs easily. The controller uses a 1769-BA battery to maintain user memory during power outages, and this battery is field-replaceable.
The 1769-L32C stands out with its integrated ControlNet port. ControlNet is a deterministic, scheduled network ideal for real-time control applications. The module stores network configuration data and parameters automatically, ensuring consistent operation after power cycles.
Additionally, the RS-232 port supports DF1 and DH-485 protocols for programming and basic connectivity. The NAP port provides convenient access for temporary connections during commissioning and troubleshooting. These communication options make the 1769-L32C versatile for both legacy and modern industrial networks.
This controller supports up to 16 local 1769 Compact I/O modules. Furthermore, it allows expansion across three I/O banks using two expansion cables. This scalability enables the 1769-L32C to accommodate growing system requirements.
Installation requires placing the 1769-L32C as the leftmost module in the CompactLogix chassis. It must be mounted within the power supply distance rating for proper operation. The controller supports both DIN-rail and panel mounting methods.
The 1769-L32C operates reliably within a temperature range of 0 to 60 °C (32 to 140 °F). It also functions in relative humidity from 5 to 95% (non-condensing). Maintaining proper temperature and humidity is essential to prevent corrosion and extend module life.
For shock resistance, the 1769-L32C withstands 20 g when DIN-rail mounted and 30 g when panel mounted. Vibration tolerance is 5G from 10 to 500 Hz with 0.030-inch peak-to-peak displacement. Wiring uses copper wire rated for 90 °C, with solid sizes from 22 to 14 AWG and stranded sizes from 22 to 16 AWG.
Q1: What is the user memory capacity of the 1769-L32C?
A: The 1769-L32C provides 750 KB of user memory for program logic and data. It also supports CompactFlash cards for additional non-volatile storage.
Q2: What communication protocols does this controller support?
A: The 1769-L32C includes ControlNet on channel 4, plus RS-232 (DF1, DH-485) and a NAP port. It does not support Ethernet/IP natively.
Q3: How many I/O modules can the 1769-L32C handle?
A: The 1769-L32C supports up to 16 local I/O modules and up to 3 I/O banks, providing excellent expansion capability for medium-sized systems.
Q4: What battery does the 1769-L32C use and how do I replace it?
A: The 1769-L32C uses a 1769-BA battery. Replacement is straightforward: simply remove the old battery and install the new one while the controller is powered on to prevent memory loss.
| Brand Name | |
| Model No. | 1769-L32C |
| Product Type | Programmable Automation Controller |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
