Product Description
Product Details: Allen-Bradley Compact GuardLogix CPU (Model: 1768-L45S)
General Overview
- Manufacturer: Allen-Bradley
- Model/Part Number: 1768-L45S
- Description: The Compact GuardLogix CPU is designed for safety and standard control applications, providing integrated safety and standard control in a single system. It supports up to 4 1768 modules and 4 motion modules, making it suitable for a wide range of industrial applications that require high-performance control.
Electrical Specifications
| Attribute | Value |
|---|---|
| Voltage Type | DC |
| Number of 1768 Modules (Max) | 4 |
| Number of 1768 Motion Modules (Max) | 4 |
| Number of I/O Banks (Max) | 3 |
| Number of 1769 I/O Modules (Max) | 30 |
| Current Draw (1768) | 5.6 A @ 5V DC |
| Total Current Draw (1768 & 1769) | 7.6 A @ 5V DC |
| Protection for Local Controls | No |
| Failsafe Model | No |
| Communication Medium (Fibre Optic) | No |
| Communication Medium (Wireless) | No |
| Expandable | Yes |
| Standard Applications Available | Yes |
| Communication Medium (Copper) | Yes |
| Communications Protocol | Other |
| Communication Bus | RS-232 |
| Number of 1768 Communication Modules (Max) | 2 |
| Power Supply Distance Rating | 4 modules |
| Current Draw (1769) | 2.0 A @ 5V DC |
| Power Supply | 1768-PA3, 1768-PB3 |
| Wire Category | 2 - on communication ports |
| Module Expansion Capacity | Two 1768 modules, Sixteen 1769 modules |
| Serial Cable | 1756-CP3 or 1747-CP3, 3 m cable with connectors |
| Isolation Voltage | 30V (continuous), Type tested at 500V AC for 60s, RS-232 to system |
Physical Specifications
| Attribute | Value |
|---|---|
| Mounting Type | DIN-rail mounting |
| With Display | No |
| With PC Connection | Yes |
| Module Location | DIN rail or panel mount |
| Communication Ports | RS-232, fully isolated, 38.4 Kbps max |
| Panel Mounting Screw Torque | 1.16 Nm (10 in-lb), using M4 or #8 screws |
Environmental Specifications
| Attribute | Value |
|---|---|
| Shock (Operating) | 30 G |
| Surrounding Air Temperature (Max) | 60 °C |
| Operating Temperature | 0 °C |
| Storage Temperature | -40 °C |
| Vibration | 5 G @ 10...500 Hz |
| Relative Humidity | 5...95% noncondensing |
Immunity & Emissions
| Attribute | Value |
|---|---|
| Emissions | CISPR 11 (IEC 61000-6-4) |
| EFT/B Immunity | ±4 kV @ 5 kHz on communication ports |
| ESD Immunity | 6 kV contact discharges, 8 kV air discharges |
| Surge Transient Immunity | ±2 kV line-earth (CM) on communication ports |
| Conducted RF Immunity | 10V rms with 1 kHz sine-wave 80% AM from 150 kHz to 80 MHz |
| Radiated RF Immunity | 10 V/m with 1 kHz sine-wave 80% AM from 80 to 2000 MHz, 10 V/m with 200 Hz pulse 100% AM at 900 MHz and 1890 MHz, 3 V/m from 2000 MHz to 2700 MHz |
Other Specifications
| Attribute | Value |
|---|---|
| Explosion-Proof | No |
| North American Temperature Code | T4 |
Key Features
- High I/O and Motion Module Support: Supports up to 4 motion modules and 30 1769 I/O modules.
- Expandable: Can be expanded with additional modules (up to 2 1768 modules and 16 1769 modules).
- Communication: Uses RS-232 for communication, with up to 2 communication modules.
- Environmental Tolerance: Suitable for operating temperatures from 0°C to 60°C, with resistance to shock (30 G) and vibration (5 G).
- Advanced Immunity Protection: Ensures reliable performance in harsh environments with EFT/B, ESD, and radiated RF immunity.
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