The Honeywell 8U-PCNT02 functions as the main processor module within the UMC800 controller system. This unit executes control strategies and manages I/O communications for small to medium process applications. Consequently, it provides reliable loop control for batch processes and industrial furnaces.
Technical Specifications and Processing Capabilities
Control engineers require precise processor specifications for effective strategy development and system sizing. Therefore, we present the complete technical data for the Honeywell 8U-PCNT02:
| Parameter | Specification |
|---|---|
| Manufacturer | Honeywell |
| Product Type | Controller Module |
| Series | UMC800 |
| Part Number | 8U-PCNT02 |
| Processor Type | 32-bit RISC with FPU |
| Program Memory | 512 KB battery-backed RAM |
| Firmware Memory | 1 MB Flash EEPROM |
| Logic Execution Speed | 0.5 ms per 1000 ladder elements |
| Loop Capacity | 16 PID loops maximum |
| Control Block Capacity | 200 function blocks |
| Scan Rate | 25 ms fixed for all I/O |
| Communication Ports | 1 x RS-232, 1 x RS-485, 1 x Ethernet option |
| Protocol Support | Modbus RTU, Modbus TCP, Honeywell proprietary |
| Dimensions | 140 mm x 120 mm x 80 mm |
| Weight | 0.54 kg |
| Power Consumption | 400 mA at 5 VDC, 200 mA at 24 VDC |
| Battery Backup | Lithium battery for program retention |
| Battery Life | 5 years typical at 25°C |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Mounting Style | UMC800 backplane |
Advanced Control Features
The 8U-PCNT02 executes complex control strategies including cascade, feedforward, and ratio control with ease. Additionally, it supports multiple programming languages such as ladder logic and function block diagram. This module performs floating-point mathematics and thermocouple linearization without external computation. You can integrate this controller with protection devices like the RMS TSG TZ C static trip unit for comprehensive process safety. Furthermore, the Honeywell 8U-PCNT02 includes a real-time clock for time-proportional control and event logging.
Memory Architecture and Energy Storage
This controller module maintains programs and configuration data through battery-backed RAM and Flash memory. Its lithium battery preserves critical data during power outages for up to five years. The 8U-PCNT02 provides 512 KB of program memory, sufficient for most batch and continuous processes. Engineers can store multiple recipes and easily switch between them during production changes. Typical applications include heat treat furnaces, environmental chambers, batch reactors, and drying ovens.
Communication and Integration Options
The Honeywell 8U-PCNT02 features RS-232 and RS-485 ports for operator interface and supervisory system connections. Its Ethernet option enables seamless integration with plant-wide networks and data historians. The built-in Modbus support allows communication with variable frequency drives and smart instruments. Consequently, engineers can build integrated systems without additional communication modules.
Details
| Weight | 0.2 kg |
|---|---|
| Dimensions | 85 × 65 × 30 mm |

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