Allen-Bradley 1756-L65 Series B ControlLogix controller

The Allen-Bradley 1756-L65 is a Series B ControlLogix controller. It has a built-in RS-232 serial port available, as well as a user memory for data and logic of 32 MB and an I/O memory of 478 kb. You can also install an optional nonvolatile memory storage with this controller. However, what can be installed is only the 128 MB CompactFlash 1756-CF128 memory card. It also has a battery that can be replaced but only when needed. The battery compatible with this controller is only the 1756-BA2 lithium battery. The compatible ControlLogix chassis with this controller are 1756-A4, 1756-A7, 1756-A10, 1756-A13, and 1756-A17.

Technical specifications for 1756-L65

ManufacturerRockwell Automation

BrandAllen-Bradley

Part Number/Catalog No.1756-L65

SeriesControlLogix

Module TypeProcessor Module

I-O Memory478 Kilobytes

User Memory32 MB

Maximum I-O128,000

Maximum Analog I-O4,000

Maximum Digital I-O128,000

Current Draw (5.1 Volts DC)1200 milliamps

Current Draw (24 Volts DC)14 milliamps

Power Dissipation3.5 Watts

Thermal Dissipation11.9 BTU per hour

Isolation Voltage30 Volts Continuous

EnclosureNone

It has a maximum analog I/O of 4000 and a maximum digital I/O, as well as a maximum total I/O, of 128,000. It has a current draw of 1200 mA at 5.1V DC and 14 mA at 24V DC. Its power dissipation is 3.5 W and thermal dissipation is at 11.9 BTU/hr. It also has a continuous isolation voltage of 30V. This controller has also been type tested for 60 s at 720 V DC.