Product Description:

The IE3312-0000 is a field-installable temperature acquisition module produced by Beckhoff within the IE Extension Box Units series. Designed for mounting directly on machinery, the unit extends an I/O network with dedicated thermocouple measurement capability. By converting low-level sensor signals into digital process data close to the installation point, it reduces wiring to the control cabinet and supports decentralized temperature monitoring in automated production lines.

Each of the module’s 4 analog inputs is handled by a microprocessor-based linearization stage and delivered with a native resolution of 0.1 °C per digit, allowing fine temperature discrimination without additional scaling in the controller. The inputs are galvanically separated from the logic domain by 500 V of channel-to-control isolation, which helps limit ground loops in electrically noisy machines. A complete conversion cycle occupies 260 ms, so all four channels refresh within one standard scan. The resulting data frame contains 4 × 16 bits, which is transferred across the extension bus and keeps mapping in the host system consistent. Because millivolt measurement is supported, the terminals accept direct sensor voltages without external amplifiers.

For field integration, sensors are attached through an M12 screw-in header, and the upstream supply is routed through a feed connector, while downstream signaling exits through one 4-pin M8 socket. Lead pairs use a 2-wire method, and the unit automatically recognizes the industry-standard Type K thermocouple as the default channel configuration. Four selectable filter profiles suppress electromagnetic interference and damp process noise during measurement. Alarm handling is aided by dedicated Error LEDs that illuminate whenever an open sensor or broken wire condition is detected.