1. Part Number Definition

• 3A99164: Base SUB8 QBO digital output module family for Ovation DCS Quad-Bus rack system

• G01: Standard base variant, solid-state transistor DC output type; matching reinforced surge version marked as 3A99164G01G50

• Related model differentiation:

  • 3A99164G01: Standard 16-channel solid-state DO, 24VDC sinking/sourcing output (basic non-surge)

  • 3A99164G01G50: G50 enhanced anti-surge, lightning & EMC hardened version for heavy industrial site

  • Relay-type DO: 3A99168 series (Form A mechanical relay output, separate from QBO solid-state)

2. Electrical Specifications

• Channel count: 16 galvanically isolated solid-state digital output channels (no mechanical relay)

• Rated output: 24VDC field load, max 0.5A per single channel; total module aggregated load ≤6A

• Output type: Configurable sink/source transistor drive for solenoid valves, contactors, indicator lamps

• Isolation: Field-to-backplane isolation 1000VAC; G50 variant adds multi-stage TVS + varistor surge suppression

• Diagnostic functions: Per-channel short-circuit protection, overload fault detection, open-load alarm, internal hardware self-test; all fault status uploaded to DPU via Quad-Bus automatically

• Backplane power supply: +5V & ±12VDC from SUB8 rack backplane; typical power consumption ≈3.9W

• Response time: Channel switching delay ≤0.3ms, fast logic output for interlock & sequence control

3. Mechanical & Environmental Data

• Form factor: Standard plug-in SUB8 rack card, dimension 260mm × 100mm × 25mm, fully mechanically interchangeable with SUB8 QAI/QBI/QAO modules

• Hot-swap feature: Supports online hot-plug replacement without shutting down rack power, no disturbance to adjacent I/O cards

• Operating temperature: -40℃ ~ +70℃; storage temperature: -45℃ ~ +85℃

• Ambient humidity: 5%~95%RH non-condensing; G50 version complies with power plant EMC & CE industrial certification

4. Front Panel LED Indicators

• POWER (Green): Lights up when backplane supply is normal

• RUN (Green): Illuminated during healthy Quad-Bus communication with SUB8 master card (3A99158G02 / 3A99159G03)

• CH1~CH16: Individual channel LED turns ON when corresponding output channel is energized

• FAULT (Red): Activated by channel overload, short-circuit or module internal hardware failure

5. Core Features

1. Solid-state non-relay design, long service life, no contact abrasion for frequent on-off switching applications

2. G50 optional surge reinforced circuit against field surge spike, inverter & motor EMI interference for thermal power, petrochemical site

3. Compatible with redundant SUB8 master controller for dual-redundant DCS I/O drop configuration

4. Output logic inversion, fault alarm threshold configurable via Ovation Developer software

6. Typical Application

• Thermal power plant: Control of solenoid valves, field auxiliary relays, local status indicator lights

• Petrochemical / Waste-to-energy plant: Interlock logic drive for pump, fan auxiliary control circuit

• Water treatment plant: On-off control of dosing valve and auxiliary field equipment

7. Matching SUB8 System Components

• SUB8 Quad-Bus Master Card: 3A99158G02 (standard), 3A99159G03 (redundant)

• DI QBI Module: 3A99160G02

• AI QAI Module: 3A99163G01/G01G50

• AO QAO Module: 3A99161G01

• Relay Output QRO Module: 3A99168G01