Product image is representative; revision or series may vary. Contact us to request a specific version.
1756-L71
The 1756-L71 from Allen Bradley serves as a versatile programmable automation controller suited for a multitude of applications. This unit supports up to 32 controller tasks and offers strong communication capabilities, including various network protocols for seamless integration in diverse environments.
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Technical specifications for 1756-L71
| Manufacturer | Allen Bradley |
|---|---|
| Product Type | Programmable Automation Controller |
| Product Line | ControlLogix |
| Part Number | 1756-L71 |
| UPC | 612598876013 |
| Weight | 1.00 lbs (0.45 kg) |
| Number of Controller Tasks | 32 Tasks |
| Communications Ports | 1 USB 2.0 Port |
| Communication Options | Ethernet/IP, ControlNet, DeviceNet, Data Highway Plus, Remote I/O, SynchLink, and Other Third-Party Networks |
| Maximum Number of Controller Connections Supported | 500 |
| Input and Current Ratings | 5 Milliamps at 1.2 Volts DC; 800 Milliamps at 5.1 Volts DC |
| Power Dissipation Rating | 2.5 Watts |
| Thermal Dissipation Rating | 8.5 BTU/hr |
| Isolation Voltage | 30 Volts (Continuous) |
| Enclosure Type | Open-Style |
| Operating Temperature Range | 0 to 60 Degrees Celsius |
The model 1756-L71 is a programmable automation controller from Allen Bradley’s ControlLogix series. It has the capacity to manage 32 distinct tasks, making it suitable for a wide range of automation requirements. This controller includes a USB 2.0 port, which allows for easy data transfer and connectivity. With its ability to support up to 500 connections, the device allows extensive networking capabilities to cater to complex control environments.
The communication options available with this controller are extensive, featuring Ethernet/IP, ControlNet, DeviceNet, Data Highway Plus, Remote I/O, and SynchLink, ensuring compatibility with various third-party networks. The input ratings reveal 5 milliamps at 1.2 volts DC and 800 milliamps at 5.1 volts DC, indicating its efficient performance under specified conditions.
In terms of power handling, the unit has a dissipation rating of 2.5 watts, with a thermal dissipation rate of 8.5 BTU/hr. The device maintains a continuous isolation voltage of 30 volts, contributing to its robustness and safety in operation. The open-style enclosure allows for convenient installation while ensuring adequate airflow for cooling. This controller functions optimally within ambient temperatures between 0 and 60 degrees Celsius, making it versatile for different operational settings.
| Revision Part # | Also known as | |
|---|---|---|
| 1756-L71 Ser A | 1756-L71/A, Series A, Rev A | |
| 1756-L71 Ser B | 1756-L71/B, Series B, Rev B | |
| Don't see your particular revision? Contact us now. | ||
- 1756-L7I
- 1756L71
- 1756L7I
- I756-L71
- I756-L7I
- I756L71
- I756L7I
Does the 1756-L71 come with a warranty?
Yes, the 1756-L71 includes a free 2-year DO Supply warranty. You can upgrade to a 3-year warranty at checkout for even more protection.
Where can I send the 1756-L71 to be repaired?
DO Supply, Inc. offers a variety of repair services for the 1756-L71.
What type of memory does the 1756-L71 have?
The 1756-L71 has a user memory of 2 MB and an I-O Memory of 0.98?
What is this module’s power dissipation?
The 1756-L71 has a dissipation of around 2.5 Watts.
What kind of enclosure does the 1756-L71 require?
The 1756-L71 does not require an enclosure.
What is the SD slot for on the 1756-L71
The memory card enables the user to keep a copy of the project on the controller without the need to maintain power to the controller. The memory card can be used to store the contents of the user memory when project is stored.
Do the 1756-L71 Controllers use battery to retain program?
Instead of batteries, the Logix 5570 family (including 1756-L71) uses Energy Storage Modules (ESM). The ESM allows this unit to save the program to the onboard nonvolatile storage (NVS) memory of the controller even after power is turned off to the rack or the controller is taken out of a powered on rack.
Does the 1756-L71 provided with embedded Ethernet I/P port?
No. It only has 1 USB port, however, Ethernet port may be added via optional communication adapters.
What is the size of the embedded user memory of this controller?
The 1756-L71 has 2 MB user memory, 0.98 I/O memory and 1 GB non-volatile memory.
Can I mount this controller to a DIN rail?
No. This controller requires a ControlLogix chassis to mount.
Identifying Controller Faults with the 1756-L71
It is important to understand the 1756-L71 device’ possible faults and how to address them. When the PAC encounters an error, the PAC’s Red indicator light is lit and provides an error code corresponding to the event through the front panel display. This error code can be evaluated and counter check within the fault database to identify the cause and perform necessary corrective actions. Capturing the PLC’s error code is important as it provides the root cause of the problem. Performing a general fix without knowing the cause may lead to another fault instance in the future resulting to process stoppage and loss of production. A Fault is initially identified via the CPU Status Indicator LEDs.