Varec 8810 Remote Terminal Unit

The 8810 Remote Terminal Unit (RTU) is a modular, Ethernet ready, communications device. Its powerful industrial chassis is ideal for integration with tank gauges and other field devices used in inventory management applications. With support for up to six interface modules, it is extremely flexible in handling data exchange across multiple communication protocols.

Specifications

Module Architecture

• Complete Computer Control System
• Inputs are reported to Host Computer by Scanned Poll
• Built-in Software Function Library
• Surge Protection Conforming to ANSI/IEEE C37.90a-1974
• Host Communication via RS-232 and RS-485
• Industry Standard Protocols: Modbus and OPC UA
• I/O Interfaces: DI, DO
• Quick-Disconnect I/O Terminations
• Modular Construction for Optimum Expandability
• Non-Volatile Database
• Redundant power inputs
• 6 expansion slots
• 27+ channels (more for DIO)
• Supports up to 400 tanks
• Green Hills INTEGRITY RTOS with ARINC-653 Partitioning
• NIST SP 800-53 & FIPS 140-2 Compliant (future)

I/O Expansion

The available expansion modules are listed below:
• 8812 BPM: Bi-Phase Mark
• 8813 DIO: Digital I/O
• 8814 SER: Serial
• 8815 M/S: Mark/Space

Options

Memory

• 800 MHz quad-core CPU
• 1 x 32 GB USB flash drive
• 2 x 32 GB mini SD cards
• 2048 MB high-speed RAM

DC Power

18-65 VDC, 20 W max (CPU Module)

TCP/IP Communications

100 Mbps Ethernet interface using OPC UA over TCP/IP and Modbus over TCP

Serial Host/Slave Communications

• Selectable Data Rate, 1200 to 115200
• RS-232 or RS-485 communications
• RS-485 Maximum Cable Length (18 AWG), 4000 ft/1200 m
• RS-485 Maximum Multi-dropped Units, 32

Physical

8810 RTU Case: 15.50? W x 9.85? H x 6.00? D

Environmental

• Operating Temperature: -40°F to 185°F; -40°C to +85°C
• Storage Temperature: -40°F to 212°F; -40°C to 100°C
• Humidity: 0 to 95% RH non-condensing
• Ingress Protection: NEMA 1, IP30

Discrete Inputs/Outputs

• Maximum Quantity: 48
• Isolation Voltage: 4000 Vrms
• Maximum Current: 2.0 A
• Operating Voltage:
–Output: 3-60 VDC
–Input: 3-32 VDC

Remote Terminal Unit