Memory-type Temperature Controllers
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LU-936 High-Speed High-Precision PID Controller
The LU-936 is a high-speed, high-precision PID controller designed for the semiconductor, photovoltaic and new energy industries. It combines a 32-bit processor with a dedicated 24-bit ADC, achieving 0.05-class measurement accuracy (0.03 class customizable) and a 10ms sampling rate. Its independently developed fuzzy PID algorithm enables precise temperature control of objects with large pure lag.
I. Product Overview
Core Features
1 Extremely fast sampling speed (10ms) and ultra-high accuracy (0.05 class, 0.03 class customizable)
2 Supports multiple types of input signals such as thermocouples, RTDs, standard voltage and standard current, and is equipped with a fast and accurate nonlinear correction algorithm. It can implement auxiliary second-channel sampling, support difference/average calculation, and can also be used as an external setpoint signal input;
3 Flexible control modes, including on/off control, manual control and PID artificial intelligence control with auto-tuning function, with 2 setpoint registers and support for external setpoint and event-triggered setpoint switching;
4 Rich alarm functions: 4 groups of alarm registers can be freely combined and mapped to any physical output interface, providing 9 alarm modes;
5 Adopts 5-digit digital tube display for simple human-machine interaction, modular plug-and-play structure and rich output specifications, suitable for various application scenarios;
6 Compatible with the standard MODBUS communication protocol, with strong versatility and reliability and excellent anti-interference performance, passing the industrial level-3 electromagnetic compatibility test;
7 Equipped with thermocouple break, RTD break and over-range detection functions; the code 5b is displayed when a fault occurs.
II. Main Technical Parameters
1. Input Specifications
- Thermocouple: S/R/B/K/N/E/J/T (corresponding to different temperature ranges, e.g. K: -200~1372°C);
- RTD: PT100 (-200~800°C), Cu50/Cu100 (-50~150°C);
- Standard signals: 0~100mV millivolt, 0~500Ω resistance, 0~10V/0~5V/1~5V voltage, 4~20mA/0~10mA current (all support custom settings).
2. Core Performance
1 Cold junction compensation: ±0.1°C; sampling resolution: 1/0.01°C; sampling period: 10ms;
2 Power supply: 85~265VAC (24VDC power supply customizable, model suffix + 24V); overall power consumption <4W;
3 Operating environment: -10~+60°C, 0~80RH%.
3. Output Modes
| Code | Output Type | Key Parameters / Description |
|---|---|---|
| SCR | SCR phase-shift trigger output | - |
| SSR | Solid state relay trigger / SCR zero-crossing trigger | 15VDC/30mA |
| RELA | Relay contact normally open output | 250VAC/3A |
| I010 | 0~10mA current output | Load capacity < 1000 ohm |
| I420 | 4~20mA current output | Load capacity < 500 ohm |
| FREE | 0~20mA custom current output | Range set by software register |
| FRSS | Limiting solid state relay / SCR zero-crossing trigger | Limiting threshold set by software register |
| FRRL | Limiting relay output | Limiting threshold set by software register |
4. Alarm Functions
- Alarm registers: 4 groups, freely mapped to each output position
- Alarm modes: 9 types, namely single-sided hysteresis upper limit alarm, single-sided hysteresis lower limit alarm, double-sided hysteresis upper limit alarm, double-sided hysteresis lower limit alarm, positive deviation alarm, negative deviation alarm, positive/negative deviation outside alarm, positive/negative deviation inside alarm and fault alarm
LU-936 High-Speed High-Precision PID Controller User Manual
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