1. Product Overview

2. Electrical Specifications

• Channel configuration: 8 fully isolated analog input channels, Quad-Bus SUB8 architecture, standard 4–20mA passive loop input

• Backplane power supply: +5VDC & ±12VDC powered via SUB8 rack backplane; typical power consumption ≤4.2W

• Galvanic isolation: 1000VAC channel-to-bus isolation; G50 variant adds extra transient surge suppression for power plant high-interference cabinet environment

• Input loop: Supports 2-wire/3-wire field transmitter power feed; max loop resistance 850Ω per channel

• Measurement accuracy: ≤0.1% full-scale precision; all-channel refresh cycle ≤2.8ms

• Built-in diagnostics: Individual channel open-circuit detection, over-range alarm, short-circuit fault diagnosis, all fault codes transmitted to DCS system; G50 improves fault anti-jamming capability

3. Mechanical & Environmental Parameters

• Form factor: Standard hot-swappable plug-in PCB for SUB8 rack; unified dimension:260mm×100mm×25mm, same as other Q-series I/O cards

• Operating temperature: -40℃ ~ +70℃; storage: -45℃ ~ +85℃; humidity 5%~95%RH non-condensing; G50 conforms to power plant coal-fired site EMC enhanced standard, CE certified

• Net weight: ~0.35kg

4. Front Panel LED Definition & Core Features

LED Indicators

• POWER(Green): Backplane power supply normal

• RUN(Green): Normal Quad-Bus communication with SUB8 master card

• CH1~CH8 LED: On when corresponding input channel has valid field signal

• FAULT(Red): Triggered by channel open/overrange/onboard hardware error

Key Functions

1. Online hot-swap: Module replacement without cutting rack power, no interruption to other I/O modules in same rack

2. G50 customized upgrade: Extra TVS surge components, optimized PCB layout for high-voltage interference in thermal power, petrochemical plant

3. Redundant bus compatible: Supports dual redundant master card (3A99159G03) SUB8 bus setup

4. Software configurable: Input range, filtering coefficient, alarm threshold adjustable via Ovation Developer configuration software

5. Typical Application

• Thermal power plant: Boiler drum level, main steam pressure/temperature, furnace pressure analog signal collection

• Petrochemical industry: Pipeline flow, tank level, reactor pressure monitoring

• Waste incineration & water treatment DCS analog parameter acquisition

6. Complete SUB8 Q-series Matching Inventory

• QBI DI:3A99160G02 (16CH Digital Input)

• QAO AO:3A99161G01 (8CH Analog Output)

• QBO DO:3A99162G01 (16CH Digital Output)

• QAI AI:3A99163G01G50 (8CH Analog Input, G50 enhanced spec)

• SUB8 Bus Master:3A99158G01 /3A99159G03