1. Product Introduction

Version note: G03 is third upgraded revision of 3A99159 series, improved bus anti-interference & surge protection, fully pin-compatible with G01/G02 old versions, direct drop-in replacement.

2. Electrical Specifications

• Power Input: +5VDC / ±12VDC supplied from Ovation main rack backplane; typical power consumption ≤5.2W

• Master Bus: Ovation proprietary high-speed SUB8 master protocol, single card can control up to 8 independent SUB8 branch racks; each branch max loads 8 slots SUB8 I/O & communication modules

• Isolation Design: Bus signal isolation 1000VAC between main backplane and SUB8 field bus; EMC surge & reverse wiring protection upgraded on G03 revision

• Onboard Diagnosis Power: Isolated auxiliary monitoring power for rack channel fault detection

3. Mechanical & Environmental Parameter

• Form Factor: Standard Ovation plug-in PCB for main controller rack slot, same outline as 3A99158 series

• Dimension: 260(L) ×100(W) ×25(H) mm; Net weight ≈0.37kg

• Operating Temperature: -40℃ ~ +72℃; Storage Temp: -45℃ ~ +85℃

• Humidity Range: 5%~95%RH non-condensing; CE industrial EMC & LVD certified

4. Key Technical Features

1. Full Hot-Swap Support: Online plug/replace without main rack power shutdown, running SUB8 I/O keeps uninterrupted control

2. Redundancy Configuration: Dual 3A99159G03 redundant master setup for critical control loops; standby master seamless auto-switchover upon primary hardware failure

3. Front Panel LED Indicators:

   • POWER(Green): Module power normal

   • BUS ACT(Green): SUB8 bus communication running

   • FAULT(Red): Bus short/offline / module hardware error

   • LINK(Red): Individual SUB8 branch rack abnormal

4. Enhanced Self-Diagnosis (G03 upgrade): Real-time scan each SUB8 rack offline, module dropout, bus overload; upload detailed fault codes to DPU for system alarm display in Ovation workstation

5. Flexible Configuration: Via Ovation Developer software to define quantity of cascaded SUB8 branches, bus communication rate and fault threshold

5. Typical Application Scenarios

1. Coal-fired power plant induced draft fan, forced draft fan, feedwater pump, coal mill SUB8 local I/O control cabinet master interface

2. Petrochemical refining unit third-party instrument Modbus access rack master control (cooperated with 3A99158G02 Modbus gateway)

3. Metallurgy, municipal sewage, waste incineration plant Ovation DCS distributed SUB8 I/O system

6. Installation & Maintenance Guidance

1. Install into designated master slot of Ovation standard controller rack, lock front buckle against field vibration loose contact

2. Important safety-related cabinet adopt dual redundant 3A99159G03 layout to avoid single-point failure

3. Routine annual maintenance: Clean PCB dust, inspect backplane golden finger oxidation and SUB8 bus terminal tightness

4. Do not hot-unplug when all SUB8 branches are fully loaded to avoid instantaneous bus surge damage to master chip