B&R Automation 0GH-AI300 Analog Input Module (0GH Series PLC)

Product Description

0GH-AI300 is the B&R 0GH series 16-channel voltage analog input module, a discontinued legacy PLC I/O card for B&R 0GH automation rack system. It is designed for acquisition of analog voltage signals from industrial process transmitters and sensors. It is compatible with BP200, BP201, BP210 base backplane plates. This module is widely used in packaging machinery, textile, printing and semiconductor auxiliary equipment control systems as spare part.

Key Functions

• 16 differential voltage analog input channels, nominal input range -10V ~ +10V, maximum overrange -20V ~ +20V
• 12-bit ADC resolution; total conversion time for all 16 channels is 1ms, fast sampling for high-speed process signal capture
• Differential input resistance: 1 MΩ per channel; 40dB common mode rejection at 50Hz to suppress power frequency ground loop noise
• Max power consumption: 9W; C-UL-US safety certification for industrial cabinet installation
• Receives analog voltage signals from pressure, temperature, position and flow sensors; converts analog signals to digital values for PLC CPU processing
• Front terminal block for field wiring connection; module diagnostics and channel status feedback via backplane bus to PLC controller
• Standard 0GH series rack card form factor; hot swap support for maintenance in non-critical redundant systems

Application Scenarios

• B&R 0GH series PLC automation system, analog voltage signal acquisition module
• Packaging, printing, textile and metal forming machinery, collecting sensor voltage signals for closed-loop control
• Semiconductor fab auxiliary skid control, monitoring pressure, temperature and level analog sensors
• Legacy B&R 0GH system spare part replacement, equipment retrofit and maintenance

Common Issues & FAQ

• Analog signal drift / unstable readings: Check field cable shielding and grounding; inspect terminal block for oxidation or loose wiring; verify cabinet temperature and check for aging input circuit capacitors on PCB.
• Individual channel no reading: Test input channel continuity; check for overvoltage damage on the channel input protection circuit; inspect backplane connector pins for oxidation.
• All channels show zero value: Check module 24VDC auxiliary supply; verify backplane bus communication; confirm module address and hardware configuration in B&R programming software.
• High noise on analog channels: Confirm differential wiring is correctly implemented; separate analog signal cables from high-power motor/drive cables; check common mode ground potential difference.
• Refurbished / replacement unit note: After installation into 0GH base plate, perform module configuration in B&R programming software. Carry out channel calibration, test all 16 voltage input channels with signal source, validate bus communication before putting machine into production. Inspect electrolytic capacitors for aging on refurbished modules.