5mA 4MB AB Modules ControlLogix 4 MB Controller 1756-L72
Product Specifications
| Attribute |
Value |
| Series |
ControlLogix |
| Module Type |
Processor Module |
| Nonvolatile Memory |
1 GB (1784-SD1 ships with every controller) 2 GB (1784-SD2) |
| User Memory |
4 MB |
| Maximum I-O |
128,000 |
| Communication |
1 port USB |
| Power Dissipation |
2.5 Watts |
| Backplane Current (1.2 Volts DC) |
5 mA |
Product Description
The AB 1756-L72 is a ControlLogix Series Programmable Automation Controller (PAC) with 4 MB user memory for data and logic and 0.98 MB I/O memory. The controller includes a 1 GB SD card (1784-SD1) for optional nonvolatile memory storage, upgradable to 2 GB via the 1784-SD2 card.
Important: Only use Rockwell Automation SD cards as they are fully tested with the controllers. Other cards may cause data loss or corruption. The SD cards primarily store diagnostic data for troubleshooting purposes.
The controller includes three capacitor energy storage modules:
- 1756-ESMCAP/1756-ESMCAPK (removable)
- 1756-ESMNSE/1756-ESMNSEK (removable, no residual WallClockTime power backup)
- 1756-ESMNRM/1756-ESMNRMK (nonremovable, enhances security by preventing USB/SD card use)
The 1756-L72 can be used with specific modules to create an Armor ControlLogix controller and supports controller redundancy when paired with a similar controller on the same ControlNet network.
Compatible Chassis: 1756-A4, 1756-A4K, 1756-A7, 1756-A7K, 1756-A10, 1756-A10K, 1756-A13, 1756-A13K, 1756-A17, 1756-A17K
Technical Specifications:
- Display: 4-character alphanumeric status display
- Communication options: Data Highway Plus, DeviceNet, Ethernet/IP, Remote I/O, SynchLink, ControlNet, Third-party networks
- Isolation voltage: 30V continuous (tested at 500V AC for 60 seconds)
- Current draw: 5 mA at 1.2V DC, 800 mA at 5.1V DC
- Power dissipation: 2.5 Watts (8.5 BTU/hour)
- Temperature range: Operating 0-60°C, Storage -40-85°C
- Vibration: 2G at 10-500Hz
- Shock: 30G operating, 50G non-operating
Related Part Numbers
Frequently Asked Questions
What is this module's power dissipation?
The 1756-L72 has a power dissipation of around 2.5 Watts.
What type of enclosure does the 1756-L72 require?
The 1756-L72 does not require any kind of enclosure.
About SC Automation Limited
1. Who is SC Automation Limited?
SC Automation Limited (SC) was established in 2010 with over 10+ years of industry experience in automation instrumentation and industrial solutions.
2. Where does SC mainly distribute its products?
Our products are primarily exported to:
- Africa: South Africa
- Asia: Southeast Asia, Middle East
- Europe: Nordic countries
- Americas: South America
- Oceania: Australia, New Zealand
3. What types of automation instruments does SC specialize in?
We focus on:
- Pressure Transmitters
- Flow Meters
- Ultrasonic Level Sensors
- Vibration Monitoring Systems
- Water Quality Analyzers
- Electric Actuators
- Solenoid Valves
- Sensors & More
4. Which brands does SC supply?
We provide genuine new products from leading brands, including but not limited to:
✅ Bently Nevada | ✅ Endress+Hauser (E+H) | ✅ Pepperl+Fuchs (P+F)
✅ MTL | ✅ Allen-Bradley (AB) | ✅ Rosemount (Emerson)
✅ Yokogawa | ✅ AUMA | ✅ IFM | ✅ SMC | ✅ Festo
Need a specific brand? We can source it for you!
5. Are SC's products 100% genuine and new?
Yes! We only supply original, brand-new products with full manufacturer warranties.
6. Do SC's products come with a warranty?
✅ 1-year warranty for all products (except consumables like electrodes).
7. What delivery terms does SC accept?
- EXW (Ex-Works)
- CIF (Cost, Insurance & Freight)
8. What currencies are accepted for payment?
USD | EUR | CNY (RMB) | HKD
9. What payment methods does SC support?
- T/T (Bank Transfer)
- Alipay | WeChat Pay
10. How can customers contact SC?
- WhatsApp: +86-13715021826
- WeChat: +86-15012673027 / +86-15012630876
- Email: joy@cc-scauto.com
11. What are SC's working hours?
24/7 support! We respond promptly to inquiries at any time.
12. What is SC's company philosophy?
"Honesty in Relationships, Excellence in Work - Integrity First."
13. What shipping methods does SC support?
- Express Couriers: DHL, UPS, TNT, FedEx
- Special Routes: Russia & Pakistan dedicated lines
- Customer's Own Logistics: Share your partner's details, and we'll arrange pickup.
14. Where are goods delivered?
Mainland China or Hong Kong (brand-dependent).
15. Does SC support pre-shipment inspection?
✅ Yes! If you cannot visit, a trusted third party can inspect on your behalf.
16. What are SC's payment terms?
- Full payment upfront for orders delivered within 1 week.
- 30% deposit for orders with longer lead times.
17. Why choose SC Automation Limited?
- ✔ 100% genuine products with reliable warranties
- ✔ Fast quotations & technical support (e.g., E+H product selection)
- ✔ Year-round shipping (excluding logistics holidays)
- ✔ Hassle-free sourcing - Your trusted one-stop automation supplier!
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