JUMO 701160/8-0153-001-23 SafetyM TB/TW Temperature Limiter

The JUMO 701160/8-0153-001-23, also cataloged as the 701160 Temperature Limiter, operates as a dedicated hardware component for thermal threshold monitoring within industrial heating profiles. It measures physical PT100 resistance temperature detector inputs natively at the process tier to execute hardware relay shutdown sequences parallel to master control network platforms when thermal states exceed assigned safety thresholds.

Hardware Specifications

Industrial Control & Drive Integration

• Backplane Bus Communication Velocity Licences and Relay Execution: The safety limiter uses a self-contained processor to evaluate the analog input loop independently of the main automation rack. It processes temperature trips locally within millisecond thresholds, clearing the hardwired interlock contacts without introducing processing latency that could limit backplane bus communication velocity properties assigned to the master controller.
• Profinet / EtherNet/IP Deterministic Networks Mapping: Auxiliary signaling contacts transmit physical trip and alarm flags down to upstream communication links. This arrangement routes critical limit data over Profinet / EtherNet/IP deterministic networks, enabling central control panels to synchronize burner shutdown logs with structural machinery telemetry.
• I/O Density Scaling and Process Isolation: By isolating the primary safety temperature limiter (TB/TW) functions within a separate 0.160 kg Polyamide enclosure, the installation scales down central processing hardware needs. This independent design ensures that custom I/O density scaling routines remain separate from critical thermal protective loops, fulfilling machinery protection standards.

Frequently Asked Questions

Q: What specific hardware behaviors manifest if the connected PT100 sensor line undergoes an unexpected short or open circuit?

A: The internal monitoring logic registers the invalid resistance value instantly, treats the condition as an over-temperature state, and trips the safety relay output. This fail-safe response drops the interlocking circuit to protect the heating block from unmonitored thermal cycles.

Q: Can this 20-30 V AC/DC unit be hot-swapped or extracted from the DIN rail while the primary contact terminals are fully loaded?

A: No. Removing the module or adjusting the 0.2 to 2.5 mm2 screw terminal blocks while energized can induce electrical arcing across the contacts. This action risks pitting the relay contact pads, generating transient electrical noise on the power rails, and disrupting neighboring modules.