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1785-L30B | Allen-Bradley PLC-5/30 Standard Controller, 32K Memory, DH+/RIO Communications
- Regular price
- $992.00
- Sale price
- $992.00
- Regular price
-
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Product Description P/N: 1785-L30B
Description
The Allen-Bradley 1785-L30B is a PLC-5/30 standard controller equipped with 32K words of user memory for mid-range industrial control applications. It supports up to 1024 I/O or complementary 1024 input and 1024 output configurations, enabling scalable system architectures. The controller provides two DH+/Remote I/O channels and one configurable serial port for flexible communication across plant networks.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Allen-Bradley |
| Category | PLCs/Machine Control |
| Part Number | 1785-L30B |
| Subcategory | Standard Controller |
| Series | PLC-5 |
| Processor Type | PLC-5/30 |
| User Memory | 32K words |
| Battery-Backed RAM | Yes |
| EEPROM Backup | Supported (1785-ME modules) |
| Embedded Communications | 2 × DH+/RIO; 1 × Serial (RS-232/423/422A) |
| Max I/O Capacity | 1024 mixed or 1024 in + 1024 out (complementary) |
| Max I/O Racks | 4 local racks; 13 total chassis |
| Remote I/O Chassis | Up to 12 |
| Backplane Current Load | 2.3 A |
| Power Supply Compatibility | 1771-P4S, P6S, P4S1, P6S1 |
| Control Coprocessor Port | Yes |
| Operating Temperature | 0…60°C (32…140°F) |
| Storage Temperature | −40…85°C (−40…185°F) |
| Power Dissipation | 12 W |
| Max Analog I/O | 1024 |
| I/O Scan Time | 10 ms @ 57.6 kb, 7 ms @ 115.2 kb, 3 ms @ 230.4 kb |
Information About 1785-L30B
The 1785-L30B is part of the PLC-5 family, recognized for its modular architecture and long-term reliability in industrial automation. Built as a standard processor, it is compatible with 1771 I/O chassis and supports up to 13 I/O chassis across local and remote configurations. Designed with an RS-232/422A/423-A serial interface and dual DH+/RIO ports, it integrates efficiently with legacy and modern plant-floor systems. Its 32K word memory, battery-backed storage, and optional EEPROM support make it suitable for medium to large automation tasks requiring stable, deterministic control.
Key Features:
- 32K word user memory: Supports medium-scale logic, data handling, and control tasks.
- DH+/Remote I/O communications: Two channels selectable as adapter or scanner for network flexibility.
- Configurable serial port: RS-232, RS-422A, and RS-423 support for device and programming connectivity.
- Scalable I/O capacity: Manages up to 1024 mixed I/O or complementary 1024 inputs and 1024 outputs.
- Battery-backed RAM: Ensures program retention during power loss.
- EEPROM backup option: Supports 1785-ME memory modules for non-volatile storage.
- Wide operating range: Designed for 0…60°C environments and industrial temperature extremes.
- Compatible with PLC-5 architecture: Integrates with up to 13 I/O chassis and 12 remote I/O racks.
The 1785-L30B delivers the reliability and precision required for robust, distributed control systems in legacy and modern industrial environments.
Description
The Allen-Bradley 1785-L30B is a PLC-5/30 standard controller equipped with 32K words of user memory for mid-range industrial control applications. It supports up to 1024 I/O or complementary 1024 input and 1024 output configurations, enabling scalable system architectures. The controller provides two DH+/Remote I/O channels and one configurable serial port for flexible communication across plant networks.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Allen-Bradley |
| Category | PLCs/Machine Control |
| Part Number | 1785-L30B |
| Subcategory | Standard Controller |
| Series | PLC-5 |
| Processor Type | PLC-5/30 |
| User Memory | 32K words |
| Battery-Backed RAM | Yes |
| EEPROM Backup | Supported (1785-ME modules) |
| Embedded Communications | 2 × DH+/RIO; 1 × Serial (RS-232/423/422A) |
| Max I/O Capacity | 1024 mixed or 1024 in + 1024 out (complementary) |
| Max I/O Racks | 4 local racks; 13 total chassis |
| Remote I/O Chassis | Up to 12 |
| Backplane Current Load | 2.3 A |
| Power Supply Compatibility | 1771-P4S, P6S, P4S1, P6S1 |
| Control Coprocessor Port | Yes |
| Operating Temperature | 0…60°C (32…140°F) |
| Storage Temperature | −40…85°C (−40…185°F) |
| Power Dissipation | 12 W |
| Max Analog I/O | 1024 |
| I/O Scan Time | 10 ms @ 57.6 kb, 7 ms @ 115.2 kb, 3 ms @ 230.4 kb |
Information About 1785-L30B
The 1785-L30B is part of the PLC-5 family, recognized for its modular architecture and long-term reliability in industrial automation. Built as a standard processor, it is compatible with 1771 I/O chassis and supports up to 13 I/O chassis across local and remote configurations. Designed with an RS-232/422A/423-A serial interface and dual DH+/RIO ports, it integrates efficiently with legacy and modern plant-floor systems. Its 32K word memory, battery-backed storage, and optional EEPROM support make it suitable for medium to large automation tasks requiring stable, deterministic control.
Key Features:
- 32K word user memory: Supports medium-scale logic, data handling, and control tasks.
- DH+/Remote I/O communications: Two channels selectable as adapter or scanner for network flexibility.
- Configurable serial port: RS-232, RS-422A, and RS-423 support for device and programming connectivity.
- Scalable I/O capacity: Manages up to 1024 mixed I/O or complementary 1024 inputs and 1024 outputs.
- Battery-backed RAM: Ensures program retention during power loss.
- EEPROM backup option: Supports 1785-ME memory modules for non-volatile storage.
- Wide operating range: Designed for 0…60°C environments and industrial temperature extremes.
- Compatible with PLC-5 architecture: Integrates with up to 13 I/O chassis and 12 remote I/O racks.
The 1785-L30B delivers the reliability and precision required for robust, distributed control systems in legacy and modern industrial environments.