Rated 4.8 with 7 reviews


Revisions: Ser A Ser B

Description:   The Allen-Bradley 1794-L34 FlexLogix Controller System has a 512 Kb Memory, a 24 Volt DC Input Voltage, and a 30 Volt DC Isolation Voltage. It also operates with a 20.4 Watts at 24 Volts DC at maximum. Power Dissipation and a 653mA at 5.1 Volts DC at maximum. Flexbus Current Output.

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About 1794-L34

The Allen-Bradley 1794-L34 is a FlexLogix controller. It has a non-volatile 512-KB user memory available and it supports Logix instructions from the RSLogix 5000 programming software. The 1794-L34 controller also comes with a 1788 communication daughtercard that lets the controller communicate via standard-based DeviceNet, ControlNet, and EtherNet/IP networks. Up to two daughtercards can be installed on this controller. An RS-232 serial port is also available on this controller. Users can install the controller either horizontally or vertically via a panel mount or DIN rail (particularly a 35 x 7.55 millimeters steel DIN rail). The 1794-L34 can handle up to 8 tasks but only 1 can be continuous. This controller supports event tasks, which are consumed tag trigger as well as EVENT instructions. Aside from DeviceNet, EtherNet/IP, and ControlNet communications, the 1794-L34 can also communicate using serial communication, DH-485, and Modbus via ladder routine. 32 connections each can be made over EtherNet/IP and ControlNet.

This controller has a nominal input voltage rating of 24 Volts DC and a range of 19.2 to 31.2 Volts DC that already includes the 5% AC ripple. Its input current is a maximum of 1.33 Amps at 19.2 Volts DC and a maximum of 0.85 Amps at 24 Volts DC. The Flexbus current has a maximum of 653 mA at 5.1 Volts DC and a maximum power dissipation is 25.5 Watts at 19.2 Volts DC and 20.4 Watts at 24 Volts DC. It also has a thermal dissipation of 87 BTU/hour at 19.2 Volts and a non-condensing relative humidity of 5 to 95%. This controller has a non-operating temperature of -40 to 85 degrees Celsius and an operating temperature of 0 to 60 degrees Celsius. The operating vibration of the 1794-L34 controller is 5G at 10 to 500 Hertz and it also has a shock of 30G and 50G, operating and non-operating respectively.

Technical specifications:

Manufacturer:Rockwell Automation
Part Number/Catalog No.:1794-L34
Product Type:FlexLogix Controller System
Memory:512 Kb
Input Voltage:24 Volts DC
Isolation Voltage:30 Volts DC
Input Current :0.85A at 24 Volts DC maximum
Power Dissipation:20.4 Watts at 24 Volts DC maximum
Flexbus Current Output:653mA at 5.1 Volts DC maximum
Thermal Dissipation:87 BTU/hour at 19.2 Volts
Weight:0.75 kilograms
Power Connector Torque:0.6 to 0.8 N-m
Enclosure Type Rating:None(open-style)


Question: What is the mounting type of 1794-L34?

Answer: The 1794-L34 has a compact DIN-Rail mounting type.


Question: Is the battery of 1794-L34 replaceable?

Answer: Yes, the battery of 1794-L34 can be replaced by the 1756-BA1. 


Question: Can this module be purchased with a warranty?

Answer: Yes, the 1794-L34 comes with a free one-year warranty from DO Supply, Inc.


Question: Where can I send the 1794-L34 to be repaired?

Answer: DO Supply, Inc. offers a variety of repair services for the 1794-L34.

Type Lead Time Price Action
Repair Service 2-4 weeks $269.70Add to Cart

Our highly skilled technicians can repair your 1794-L34. All of our repairs come with a 1 Year DO Supply Warranty. Please contact us for additional information about our repair process.

Please refer to the manual for more information about the 1794-L34 such as the wiring diagrams, data sheets, firmware information and migration or obsolescence details.

Revision Part # Also Known as Availability
1794-L34 Ser A
1794-L34/A, Series A, Rev A Request Quote
1794-L34 Ser B
1794-L34/B, Series B, Rev B Request Quote

Common misspellings: 1794L34