The 1756-L73 can use up to 8 MB of user memory with 0.98 MB of Input/Output memory. In addition, it has 128,000 total and digital I/O and 4000 analog I/O at most. The required current draw at 1.2V DC is 5 mA and 800 mA current draw is required at 5.1V DC. The 1756-L73 has 2.5 W power dissipation and 8.5 BTU/hour thermal dissipation. The isolation voltage is continuous at 30 V with basic insulation, tested at 500V AC for 60 seconds. Using a USB 2.0, it can reach up to 12 Mbps at its full speed. Approximately, it only weighs 0.25 kg with a 1-slot width and an open-style enclosure. The module is chassis-based at any slot for the 1756 chassis series. The 1756-L73 controller’s power requirement is a standard 1756 power supply. Its wiring category is 3 on USB ports. The 1756-L73 controller has an operating temperature of 0-60 deg. Celsius and its non-operating temperature is -40-85 °. Celsius. The maximum surrounding temperature that it can operate at is 60°. Celsius with 5 - 95% non-condensing relative humidity. Its operating vibration is 10 - 500 Hz is 2 g and its operating shock is 30 g operating shock while its non-operating shock is 50 g. It can reach 45 g when an SD card was installed.
ManufacturerRockwell Automation
Isolation Voltage30 Volts Continuous
Power Dissipation2.5 Watts
Current Draw (5.1 Volts)800 Miliamperes
Current Draw (1.2 Volts DC)5.0 Miliamperes
Module TypeControlLogix Controller
Part Number/Catalog No.1756-L73
EnclosureNone (Open-Style)
BrandAllen-Bradley
Communication interfacesOne (1) USB
Chassis1756-A4, 1756-A4K, 1756-A7, 1756-A7K, 1756-A10, 1756-A10K, 1756-A13, 1756-A13K,1756-A17, 1756- A17K
Standard Power Supply1756-PA50, 1756-PA72, 1756-PA72K, 1756-PA75, 1756- PA75K, 1756-PB50, 1756-PB72, 1756-PB72K, 1756- PB75, 1756-PB75K, 1756-PH75
Redundant Power Supply1756-PA75R, 1756-PA75RK, 1756-PB75R, 1756- PB75RK,1756-PSCA2, 1756-PSCA2K
SeriesControlLogix
I-O Memory0.98 MB
User Memory8 MB
Maximum I-O128,000
Maximum Analog I-O4,000
Maximum Digital I-O128,000
Thermal Dissipation8.5 BTU per hour