Controllers & Temperature Controllers

I. Overview

The LU-908M smart manual operator uses an advanced ATMEL single-chip microcomputer as the host, reducing peripheral components. Through a modular structure and EMI suppression and other technologies, the reliability of the instrument is further improved. The LU-908M automatically receives the setpoint signal and valve position feedback signal from the system (or controller), adjusts according to the deviation between them, and outputs the corresponding control signal (relay forward/reverse rotation), so the servo amplifier can be eliminated and the actuator driven directly. The LU-908M provides one analog control output: it receives the analog input signal from the system (controller) and converts it directly into another analog signal for the controlled object. The input and output signals can be different analog signals, e.g. 0-5V input with 4-20mA output. The LU-908M adopts a dual 4-digit LED display and shows the valve position or output via a bar graph. It provides bumpless manual/automatic switching, manual/automatic status output, valve position tracking output, controller event input, and hard manual operation.

Dimensions and panel cutout (W×H×D)  Unit: mm
Type A: 96×96×105  Cutout: 92×92        Type B: 48×96×105  Cutout: 45×92
Type C: 96×48×105  Cutout: 92×45        Type D: 160×80×105  Cutout: 152×76
Type E: 80×160×105  Cutout: 76×152      Type F: 72×72×105  Cutout: 68×68