Product Overview
The 1768-L45S is an Allen-Bradley Compact GuardLogix safety controller. It combines standard control with integrated safety in one unit. The architecture is 1oo2. Therefore, it reaches SIL 3 and PL e. It suits machines that need both logic and safety control. The controller runs standard tasks and safety tasks together. Safety programs use relay ladder logic and safety instructions. In contrast, standard programs use IEC-61131-3 languages. This unit fits existing CompactLogix systems. As a result, it helps engineers upgrade safety without a full platform change. The 1768-L45S carries 3 MB standard memory and 1 MB safety memory. It uses a 1784-CF128 CompactFlash card. Moreover, it has an embedded RS232 port. It supports up to 30 expansion I/O modules across 3 banks. It also accepts 2 communication modules. Typical uses include press control, packaging lines, material handling, and burner management. For inquiries, contact info@oiltechcontrols.com or +86 158 8020 0923.
Technical Specifications
| Brand | Allen-Bradley |
| Model | 1768-L45S |
| Series | Compact GuardLogix |
| Module Type | Processor Module |
| Safety Architecture | 1oo2 |
| Safety Rating | SIL 3, PL e |
| Standard Memory | 3 MB |
| Safety Memory | 1 MB |
| Local I/O | 4 x 1768 I/O modules |
| Expansion I/O | Up to 30 x 1769 Compact I/O |
| Expansion Banks | Up to 3 |
| Communication Modules | 2 |
| Backplane Current | 2.1 A at 24 V DC |
| Power Consumption | 50.4 W |
| Power Dissipation | 9.5 W |
| Isolation Voltage | 30 V DC continuous |
| Operating Temperature | 0 to 60 °C |
| Non-operating Temperature | -40 to 85 °C |
| Relative Humidity | 5 to 95% |
| Operating Vibration | 5 g at 10 to 500 Hz |
| Operating Shock | 30 g |
| Non-operating Shock | 50 g |
| Dimensions | 131.6 x 90 x 121.8 mm |
| Shipping Weight | 0.45 kg (15.9 oz) |
| Enclosure | Open |
Installation Guide
- Mount on a panel or DIN rail. Use the specified clearances: 105 mm top and bottom, 90 mm left and right.
- Keep airflow open to hold 0 to 60 °C operating temperature. Also, add a fan or heater in harsh climates.
- Insert the 1784-CF128 card before power-up.
- Connect the RS232 port at up to 38.4 Kbps.
- Wire I/O modules within the 4 local and 30 expansion limits.
Commissioning and Maintenance
- Use relay ladder for safety tasks. Use IEC-61131-3 languages for standard tasks.
- Apply safety application instructions for safety logic.
- Check module status and communication links after power-up.
- Verify safety memory use stays within 1 MB.
- Inspect clearances and airflow at each service visit.
Compatibility
The 1768-L45S works with 1768 local I/O and 1769 Compact I/O. It accepts EtherNet/IP, ControlNet, and DeviceNet communication modules in standard and safety versions. It fits CompactLogix cabinets that use the 1768 platform. Contact info@oiltechcontrols.com for cross-reference checks.
Certifications and Standards
- SIL 3 safety integrity
- PL e performance level
- Functional insulation type
- Tested to 500 V DC for 6 s on isolated RS232 ports
- Standard programming follows IEC-61131-3
Packing List
- 1 x 1768-L45S controller
- 1 x CompactFlash memory module reference (1784-CF128 series)
- 1 x Installation and safety notes
Warranty and Shipping
All units come with a 12-month warranty. We ship by FedEx, UPS, and DHL. Each order includes tracking support. Ask info@oiltechcontrols.com or +86 158 8020 0923 for lead times.
Typical Applications
- Press and stamping control
- Packaging and palletizing lines
- Material handling cells
- Burner and boiler management
- Safety retrofits in CompactLogix systems
Diagnostics
The controller reports module status and communication health. It supports standard and safety communication modules for fault visibility. Isolated RS232 ports help with local setup and troubleshooting. The 1oo2 architecture improves fault detection for safety tasks.
Why Buy From Oiltech Controls?
- 15+ years in industrial automation spare parts
- Global shipment support with FedEx, UPS, and DHL
- Tested industrial surplus and refurbished options
- 12-month warranty on every unit
- Technical verification before shipment
- Support for obsolete control systems
FAQ
Q: What safety rating does the 1768-L45S support?
A: It supports SIL 3 and PL e with a 1oo2 architecture.
Q: How much memory does it have?
A: It has 3 MB standard memory and 1 MB safety memory.
Q: Can I use standard ladder logic for safety tasks?
A: Safety tasks use relay ladder logic with safety application instructions.
Q: What is the warranty?
A: Every unit includes a 12-month warranty.
Q: How do you ship?
A: We use FedEx, UPS, and DHL.
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