IP3112-B310 Beckhoff
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The Beckhoff IP3112-B310 is part of the IP Compact Box Units series and provides four differential input channels with a nominal input range of 0 to 20 mA. It features a common internal channel ground, channel to control isolation of 500 V, and supports connection via PROFIBUS fieldbus system. The unit includes M8 and M12 connectors and offers a resolution of 15 bits plus arithmetic sign.
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Product Description:
The IP3112-B310 is a four-channel analog input slice manufactured by Beckhoff as part of the IP Compact Box Units series. Intended for decentralized control architectures, the component converts process-current signals from field sensors into digital words that a PLC can evaluate. Its fully potted housing carries an IP67 rating, so the unit can be mounted directly on machinery and tied into the fieldbus without a protective cabinet. This layout helps shorten cable runs between sensors and the controller, which can reduce the chance of noise pickup in busy equipment.
Each differential measurement channel shares a common internal ground but is galvanically separated from the control side by 500 V of isolation. The architecture tolerates up to 35 V maximum of common-mode potential between signal pairs, helping protect the A/D section from wiring faults and stray voltage. A complete conversion takes 140 ms, after which a value with 15 bits plus an arithmetic sign is loaded into the process image. The nominal input span is 0 to 20 mA, making the module suitable for standard current-output transmitters. Ten selectable input filters suppress noise, and the differential topology helps reject ambient interference before the data is passed to the controller.
The module provides 4 inputs, and each one has an input resistance of 80 Ω, which keeps burden voltage low for loop-powered devices. Communication with the host system takes place over PROFIBUS, allowing the box to be installed close to the sensing point instead of near the control cabinet. Power enters and daisy-chains through a 4-pin M8 plug and socket, while signal lines terminate on M12 screw-in connectors that remain secure under vibration. Up to 30 VDC maximum is available for sensor supply, so compatible transducers can draw auxiliary power directly from the unit. This arrangement simplifies field wiring where multiple instruments are grouped around the same machine section.
Frequently Asked Questions about IP3112-B310:
Q: What is the nominal input current range for the Beckhoff IP3112-B310 module?
A: The IP3112-B310 input module supports a nominal input range of 0 to 20 mA, making it suitable for standard current signal applications.
Q: What is the resolution of the IP3112-B310 input module?
A: This model offers 15-bit resolution with an additional arithmetic sign, allowing for precise and accurate current measurements.
Q: How many input channels are available on the IP3112-B310 and what is their topology?
A: The IP3112-B310 features four differential input channels, each using a common internal ground configuration.
Q: Which fieldbus system does the Beckhoff IP3112-B310 support?
A: This module is compatible with PROFIBUS fieldbus systems for network integration.
Q: What is the channel-to-control isolation voltage of the IP3112-B310?
A: Each channel on the IP3112-B310 provides channel-to-control isolation rated at 500 V for enhanced electrical safety.
