Image is for illustrative purposes only. Please refer to product description.
- Manufacturer
- Allen-Bradley
- Manufacturer part number
- 1756-L75
- Product family
- ControlLogix and GuardLogix Controllers (1756)
- Category
- PLCs and I/O › CPU and processor modules
- Technical datasheet
- Data sheet
Specifications
| Attribute | Value |
|---|---|
| Type | ControlLogix controller |
| Manufacturer lifecycle | Active |
| Controller tasks | 32 tasks, including a combination of one continuous, periodic, and event tasks 32 programs/tasks prior to RSLogix 5000® programming software, version 15.01.00 100 programs/task beginning with RSLogix 5000 programming software, version 15.01.00 1000 programs/task beginning with Logix Designer application, version 24.00.00 |
| Built-in communication ports | 1-port USB |
| Communication options | EtherNet/IP, ControlNet, DeviceNet, Data Highway Plus, Remote I/O, SERCOS, Third-party process and device networks |
| USB port communication | Programming, configuration, firmware update, and online edits only |
| Controller connections supported max | 500 |
| Network connections, per network module | 1000 I/O; 528 EtherNet/IP; 512 TCP (1756-EN4TR) 256 EtherNet/IP; 128 TCP (1756-EN2x) 128 EtherNet/IP; 64 TCP (1756-ENBT) 100 ControlNet (1756-CN2/A) 40 ControlNet (1756-CNB/D, 1756-CNB/E) 128 ControlNet (1756-CN2/B) |
| Controller redundancy | Full support |
| Integrated motion | SERCOS interface, Analog options (encoder input, LDT input, SSI input), Integrated Motion on the EtherNet/IP network |
| Programming languages | Relay ladder logic, Structured text, Function Block Diagram, Sequential function chart (SFC) |
| User memory | 32 MB |
| I/O memory | 0.98 MB |
| Nonvolatile memory storage | 1 GB Secure Digital (SD) card (1784-SD1), ships pre-installed in the controller |
| Digital I/O max | 128,000 |
Show all 43 specificationsShow fewer specifications
| Analog I/O max | 4000 |
|---|---|
| Total I/O max | 128,000 |
| Energy storage module | 1756-ESMCAP, 1756-ESMCAPK capacitor energy storage module (removable, ships installed with every controller) 1756-ESMNSE, 1756-ESMNSEK capacitor energy storage module (removable, no residual WallClockTime power backup) 1756-ESMNRM, 1756-ESMNRMK capacitor energy storage module (non-removable, helps prevent USB connection and SD card use to help secure the controller) |
| Current draw @ 1.2V DC | 5 mA |
| Current draw @ 5.1V DC | 800 mA |
| Power dissipation | 2.5 W |
| Thermal dissipation | 8.5 BTU/hr |
| Isolation voltage | 30V (continuous), basic insulation type, USB port-to-system, Compliant and tested according to IEC/UL 61010-1 |
| USB port | USB 2.0, full speed (12 Mbps) |
| Weight approx | 0.25 kg (0.55 lb) |
| Slot width | 1 |
| Module location | Chassis-based, any slot |
| Chassis | 1756-A4, 1756-A4K, 1756-A7, 1756-A7K, 1756-A10, 1756-A10K, 1756-A13, 1756-A13K, 1756-A17, 1756-A17K |
| Power supply, standard | 1756-PA50, 1756-PA50K, 1756-PA72, 1756-PA72K, 1756-PA75, 1756-PA75K, 1756-PB50, 1756-PB50K 1756-PB72, 1756-PB72K, 1756-PB75, 1756-PB75K, 1756-PC75, 1756-PH75 |
| Power supply, redundant | 1756-PA75R, 1756-PA75RK, 1756-PB75R, 1756-PB75RK, 1756-PSCA2, 1756-PSCA2K |
| Wire category | 3 - on USB port |
| Temperature code | T4 |
| Enclosure type rating | None (open-style) |
| Temperature, operating | 0 °C ≤ Ta ≤ +60 °C (+32 °F ≤ Ta ≤ +140 °F) |
| Temperature, nonoperating | -40…+85 °C (-40…+185 °F) |
| Relative humidity | 5…95% noncondensing |
| Vibration | IEC 60068-2-6 (Test Fc, Operating) |
| Shock, operating | IEC 60068-2-27 (Test Ea, Unpackaged Shock) |
| Shock, nonoperating | IEC 60068-2-27 (Test Ea, Unpackaged Shock) |
| Emissions | IEC 61000-6-4 |
| ESD immunity | IEC 61000-4-2 |
| Radiated RF immunity | IEC 61000-4-3 |
| Conducted RF Immunity | IEC 61000-4-6 (Not applicable: USB is a temporary programming port.) |
Description
The Allen-Bradley 1756-L75 is a chassis-based ControlLogix 32 MB controller that is one slot wide and can be fitted in any slot. Rockwell technical data 1756-TD001 lists 32 MB user memory, 0.98 MB I/O memory, 500 controller connections and a maximum of 128,000 I/O. It has a 1-port USB 2.0 full speed connection, and the communication options include EtherNet/IP, ControlNet, DeviceNet, Data Highway Plus, Remote I/O and SERCOS. Rockwell lists its lifecycle status as Active Mature.
Application: PLC controller
Used with: ControlLogix 1756 chassis
What is the 1756-L75 used for?
The 1756-L75 runs the control program in a ControlLogix chassis and supports up to 32 tasks, programmed in relay ladder logic, structured text, function block diagram or sequential function chart. Rockwell lists integrated motion over SERCOS interface and EtherNet/IP, and full support for controller redundancy.
Key features
- 32 MB user memory and 0.98 MB I/O memory
- Supports up to 500 controller connections
- Full controller redundancy support
- Ladder, structured text, function block and SFC programming
- 1 GB SD card ships pre-installed
Documents and Resources
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Product Questions
Is the 1756-L75 discontinued?
No. Its manufacturer lifecycle status is Active.
Can another Allen-Bradley ControlLogix and GuardLogix Controllers part replace it?
Potential replacements must be checked against the required ratings, dimensions and connections. Sharing a family name does not establish interchangeability.
Do you ship worldwide?
Yes. TimControls ships worldwide. Parts usually ship within 3 to 7 working days of order confirmation, and the exact lead time and shipping options are stated on your quote. Include your delivery country and postal code when you ask for a quote.
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