Excellent PLC
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Product Overview
The ABB PM825 is a high-performance processor module designed for use with the S800 I/O family and the Advant Controller 80 (AC 80) system. Built with the Motorola MC68360 CPU operating at 25 MHz, it supports complex automation tasks, high-speed communication, and real-time control in industrial applications. It integrates tightly with ABB’s drive systems and supports multiple fieldbus options including DDCS and AF100.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Code | 3BSE010796R1 |
| Processor Type | Motorola MC68360 |
| Clock Speed | 25 MHz |
| Flash PROM (System) | 1024 KB |
| Flash PROM (User Application) | 512 KB |
| RAM | 1024 KB (512K x 16-bit) |
| Communication Ports | RS-232, RS-485, Optical DDCS |
| Supported Protocols | Modbus, DDCS, AF100 |
| Mounting Type | DIN rail (DIN 50022) |
| Power Supply | 24 VDC (19.2–30 VDC) |
| Dimensions (W x H x D) | 225 x 108 x 135 mm |
| Weight | 1 kg |
Applications
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Industrial automation and process control
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ABB ACS600/800 drive systems
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I/O signal management with S800 modules
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Communication gateway for fieldbus protocols (e.g., PROFIBUS, Modbus)
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High-speed real-time control in power plants and manufacturing systems
Advantages
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Robust Performance: Efficient MC68360 processor for real-time control
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Flexible Integration: Supports multiple ABB I/O and drive systems
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Redundant Power Options: Enhances system reliability
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Multiple Interfaces: Modbus, RS-485, DDCS, and AF100
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DIN Rail Mounting: Easy and secure installation
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Comprehensive Diagnostics: Built-in LED indicators for real-time status
Frequently Asked Questions (FAQ)
Q1: What is the main function of the PM825 module?
A1: It acts as the central processing unit for the AC 80 controller, managing real-time operations and communication with I/O and drives.
Q2: What type of processor is used in PM825?
A2: It uses a Motorola MC68360 25 MHz CPU.
Q3: Can PM825 be used in redundant configurations?
A3: Yes, it supports redundant power supply connections.
Q4: Which I/O modules are compatible with PM825?
A4: It is compatible with ABB S800 I/O modules.
Q5: What communication protocols does PM825 support?
A5: Modbus, DDCS, and Advant Fieldbus 100 (AF100).
Q6: How many I/O devices can be connected to the ModuleBus?
A6: Up to 24 I/O devices, 12 on electrical and 12 on optical ModuleBus.
Q7: Is PM825 hot-swappable?
A7: No, the unit should be powered off before replacement.
Q8: What tools are used for programming PM825?
A8: Programming is done using ABB’s AdvaBuild and Function Chart Builder (FCB).
Q9: What is the function of the INIT button?
A9: It triggers a cold start and reinitializes the module.
Q10: Can PM825 connect directly to Modbus panels?
A10: Yes, via RS-485 using the panel/printer port (CH2).
Related ABB S800 Series or Compatible Models
| Model | Description | Dimensions (mm) | Weight |
|---|---|---|---|
| PM820 | CPU module for AC 80 base | 225 x 108 x 135 | 1.0 kg |
| PM860 | Controller unit for 800xA | 270 x 210 x 100 | 2.2 kg |
| PM861K01 | Redundant CPU kit | 290 x 210 x 100 | 2.3 kg |
| PM866 | High-performance CPU for 800xA | 270 x 210 x 100 | 2.3 kg |
| PM876 | Advanced CPU for 800xA | 290 x 210 x 100 | 2.5 kg |
| TB820 | Optical ModuleBus Modem | 45 x 110 x 100 | 0.3 kg |
Popular ABB Models
| Model | Description | Dimensions (mm) | Weight |
|---|---|---|---|
| AC800M PM864 | CPU module for AC 800M | 260 x 230 x 60 | 1.3 kg |
| CI854AK01 | PROFIBUS-DP Communication Module | 116 x 123 x 59 | 0.4 kg |
| AI810 | Analog Input Module (S800 I/O) | 45 x 119 x 102 | 0.25 kg |
| DO810 | Digital Output Module (S800 I/O) | 45 x 119 x 102 | 0.25 kg |
| PM511V16 | CPU for Freelance 2000 | 233 x 120 x 125 | 1.8 kg |
| CI860 | Communication Interface (MB300) | 110 x 115 x 40 | 0.3 kg |
