The Honeywell 620-0055 register module stores and retrieves data for industrial control systems. This unit weighs 0.38 kg and measures 14.2 cm x 8.5 cm x 3.2 cm. It provides 32 holding registers and 16 input registers for data storage. The module contains one memory controller and eight static RAM chips. For energy storage, it includes one lithium battery and one 100µF capacitor. Consequently, the Honeywell 620-0055 retains register values during extended power outages.
Technical Specifications
The table below lists all verified parameters for the Honeywell 620-0055. Use this data for your system integration planning.
| Parameter | Value |
|---|---|
| Manufacturer | Honeywell |
| Model | 620-0055 |
| Category | Register Module |
| Weight | 0.38 kg |
| Dimensions (L x W x H) | 14.2 cm x 8.5 cm x 3.2 cm |
| Holding Registers | 32 registers (16-bit each) |
| Input Registers | 16 registers (16-bit each) |
| Total Memory | 768 bits (96 bytes) |
| Register Addressing | Modbus compatible |
| Onboard Components | 1 memory controller, 8 SRAM chips |
| Battery Type | Lithium (replaceable) |
| Battery Life | 10 years typical |
| Energy Storage | 1x 100µF electrolytic capacitor |
| Capacitor Hold-up Time | 15 seconds |
| Data Retention (Battery) | 10 years minimum |
| Access Time | 150 nanoseconds |
| Bus Interface | Parallel (8-bit) |
| Power Supply | 5V DC ±5% |
| Current Draw | 80 mA |
| Power Consumption | 0.4W |
| Operating Temperature | 0°C to +55°C |
| Storage Temperature | -40°C to +85°C |
Register Organization
The Honeywell 620-0055 provides 32 holding registers for read-write data storage. These registers store setpoints, timers, and counter values. Additionally, the module offers 16 input registers for read-only data. Input registers typically hold sensor readings and status information. Consequently, this module organizes data exactly like standard PLC register tables.
Memory Technology
Each of the eight static RAM chips stores 12 bytes of register data. Static RAM retains information as long as the module has power. Therefore, the Honeywell 620-0055 does not require refresh cycles like dynamic RAM. The access time reaches just 150 nanoseconds for fast read and write operations. Thus, the module does not slow down your control system’s scan cycle.
Backup and Data Retention
The lithium battery maintains all register values for up to ten years. Hence, your critical data survives even during long-term power outages. The 100µF capacitor provides 15 seconds of backup during battery replacement. Thus, you can change the battery without losing any register contents. The Honeywell 620-0055 includes a battery status flag for preventive maintenance.
Installation and Compatibility
You can mount the Honeywell 620-0055 on a standard DIN rail. Alternatively, secure it with M4 screws through its mounting tabs. The module uses Modbus-compatible addressing for easy integration. Hence, most PLCs and HMIs can access these registers directly. The parallel bus interface connects to the Honeywell backplane for high-speed data exchange. The Honeywell 620-0055 works seamlessly with the RMS-TSG-TZ-C static trip unit.
Environmental Durability
This register module operates reliably from 0°C to +55°C. It also withstands 90% relative humidity without condensation. The module survives vibration up to 2g from 10 to 150 Hz. Therefore, the Honeywell 620-0055 suits most industrial control cabinets perfectly.
Details
| Weight | 0.2 kg |
|---|---|
| Dimensions | 85 × 65 × 30 mm |
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