The 140AIO33000C is an intrinsically safe analog output module in the Modicon Quantum automation platform, providing 8 channels of 0-20 mA, 4-20 mA, or 0-25 mA output with 15-bit resolution. Its CE II1 G/D-EEx ia IIC marking means it is certified for use in Zone 0/1/2 gas and Zone 20/21/22 dust hazardous areas when installed with approved barriers — the module itself limits energy to prevent ignition.
Obsolete — sourcing reality
Available through independent surplus channels; quantities are lot-specific and confirmed at RFQ. No pin-compatible direct successor is listed from the original manufacturer.
The module draws 2.5 A from the Quantum backplane and dissipates 12.5 W — budget this into the rack power supply sizing, especially in a hot environment where the 60 °C operating ceiling (32-140 °F) limits adjacent module loading. Isolation between channels and the backplane bus is 1780 Vrms for 60 seconds, meeting the galvanic separation required for intrinsically safe circuits per EN 50020 and EN 50039. Update time is 4 ms with a settling time of 1 ms to within ±0.1% of final value — fast enough for most process control loops, but not suitable for high-speed motion or valve positioning that demands sub-millisecond response. The module detects an open circuit on 4-20 mA outputs, which is critical for fault annunciation in safety-instrumented loops.
The 140AIO33000C carries approvals under UL 508, CSA C22.2 No 142, ATEX Directive 94/9/EC, and the EN 50014/50020/50039/50281-1-1/50284 standards for explosive atmospheres. Conformal coating (Humiseal 1A33) is applied as standard protective treatment, and the module includes an internal fuse for output protection.