Product Description
Allen-Bradley 1756-L74 ControlLogix Processor Module
Manufacturer: Allen-Bradley
Model/Part Number: 1756-L74
Description: The ControlLogix 5570 series processor module is designed to provide advanced control and automation solutions. It is part of the Allen-Bradley ControlLogix family, offering robust performance for industrial applications with a range of memory and I/O capabilities.
Technical Specifications
Processor & Memory
| Attribute |
Value |
| User Memory |
2 MB (1756-L71) to 32 MB (1756-L75) |
| I/O Memory |
0.98 MB |
| Optional Non-Volatile Memory |
1 GB (1784-SD1) - ships with every controller, 2 GB (1784-SD2) - optional |
| Digital I/O |
Max 128,000 |
| Analog I/O |
Max 4,000 |
| Total I/O |
Max 128,000 |
Energy Storage Module
| Module Type |
Description |
| 1756-ESMCAP / 1756-ESMCAPK |
Removable, ships installed with every controller |
| 1756-ESMNSE / 1756-ESMNSEK |
Removable, no residual WallClockTime backup |
| 1756-ESMNRM / 1756-ESMNRMK |
Non-removable, designed to secure USB connections and SD cards |
Power Requirements
| Attribute |
Value |
| 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 |
Full speed (12 Mbps), used for temporary local programming only |
Dimensions & Weight
| Attribute |
Value |
| Weight |
Approx. 0.25 kg (0.55 lb) |
| Slot Width |
1 Module location (Chassis-based, any slot) |
Chassis & Power Supply Compatibility
| Chassis Compatibility |
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-PA72, 1756-PA72K, 1756-PA75, 1756-PA75K, 1756-PB50, 1756-PB72, 1756-PB72K, 1756-PB75, 1756-PB75K |
| Power Supply (Redundant) |
1756-PA75R, 1756-PA75RK, 1756-PB75R, 1756-PB75RK, 1756-PSCA2, 1756-PSCA2K |
Temperature & Environmental Specifications
| Attribute |
Value |
| Operating Temperature |
0°C to 60°C (32°F to 140°F) |
| Non-operating Temperature |
-40°C to 85°C (-40°F to 185°F) |
| Relative Humidity |
5% to 95% (non-condensing) |
| Vibration (Operating) |
2 g @ 10…500 Hz |
| Shock (Operating) |
30 g |
| Shock (Non-operating) |
50 g (45 g with SD card installed) |
| Corrosive Atmosphere |
Yes, meets G3 severity level (ANSI/ISA 71.04–2013) |
| Conformal Coating |
No |
| Electromagnetic Compatibility |
IEC 61000-6-4 (Industrial Emissions), IEC 61000-4-2 (ESD immunity), IEC 61000-4-3 (Radiated RF immunity) |
Certifications
| Certification |
Details |
| UL Listed |
Industrial Control Equipment (c-UL-us), certified for US and Canada. UL Listed for Class I, Division 2, Group A, B, C, D |
| CE Certification |
Compliant with EU EMC Directive 2014/30/EU |
| Ex (Explosion-Proof) |
Compliant with EU ATEX Directive 2014/34/EU and IECEx. Zone 2 classification |
| UKCA & UKEx |
Certified for increased safety "e", Zone 2 classification |
| RCM |
Australian compliance for electromagnetic compatibility |
| CCC |
China Compulsory Certification |
| KC |
Korean Registration of Broadcasting and Communications Equipment |
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