Configured for precision single-loop process management, the YOKOGAWA UT35A-001-11-00/LP/DC (UT35A-001-11-00/LP/DC Digital Indicating Controller) provides direct physical signal processing and setpoint control across distributed instrumentation networks.

Suffix Breakdown & Model Matrix

• UT35A: Base model for 1/4 DIN digital indicating controller.
• -001: Specifies universal input configuration and primary control output logic.
• -11: Defines standard communication and terminal interface specifications.
• -00/LP/DC: Designates the integrated loader port, loop power supply, and 24 VDC power input version.

Hardware Specifications

Process Control Instrumentation Connectivity

The controller integrates seamlessly into standard process environments utilizing universal input sensing for thermocouples, RTDs, and mA/V signals. It features channel-to-channel isolation principles to ensure input stability against common-mode noise in instrumentation loops. The internal architecture facilitates cold junction compensation (CJC) for temperature inputs, ensuring stable setpoint execution and process variable monitoring via the 3-color 14-segment LCD display.

Frequently Asked Questions

Q: Does the UT35A-001 support ramp and soak profile execution?

A: Yes, the unit includes built-in ramp and soak functionality, allowing for time-based setpoint adjustments without the requirement for external PLC sequence logic.

Q: Is the loader port (/LP) compatible with standard USB-to-serial converters?

A: The /LP loader port requires a dedicated Yokogawa communication cable for interface with the LL50A software. Standard generic serial converters may not provide the necessary voltage levels or signal protocols.

Field Installation Guidelines

• Verify the 96 mm x 96 mm panel cutout dimensions to ensure the NEMA4 / IP66 gasket provides a proper seal against moisture and dust ingress.
• Use shielded, twisted-pair cabling for all universal input signals to maintain the 0.1% accuracy rating and mitigate electromagnetic interference (EMI).
• Ensure the 24 VDC power source is regulated and isolated to prevent voltage transients from affecting the controller internal processing.
• Route signal wires away from high-current power cables to prevent induction noise, which can cause erratic control output behavior.
• Confirm that the input type (thermocouple, RTD, or voltage) is correctly selected in the software configuration before applying process variables.