Memory-type Temperature Controllers

I. Overview
LU-962M memory-type program controller is a high-performance, high-reliability intelligent industrial controller adopting a brand-new design concept. It is specially designed for the regulation and control of temperature, flow, pressure, level, etc. in light industry machinery, ovens, test equipment, refrigeration/heating equipment, etc. It is widely used in chemical, ceramics, metallurgy, petrochemical, heat treatment and other industries.
Main features:
It adopts an advanced ARM processor, featuring fast processing speed, simple interface components, and high reliability and stability.
It covers signals such as thermocouples of various commonly used graduation numbers, RTDs, standard voltage and standard current, and its fast and accurate nonlinear correction algorithm ensures the accuracy of digital sampling.
Multiple control modes are freely selectable; among them, the intelligent regulation control adopts a control mode combining fuzzy theory and traditional PID control, so that the control process has the advantages of fast response, small overshoot and high steady-state accuracy, and has an obvious control effect especially on objects with large pure lag that are difficult to control by conventional PID. The control algorithm has an auto-tuning function.
There are abundant setpoint modes, with multiple event-based program status switching modes.
Up to 255 segments of program control curves can be set, and independent output limiting can be performed for each segment. It has a jump function; through the jump function, several program heating curves can be linked into one, and periodic cyclic program heating curve control can also be executed through the jump function. It has pause (HoLd) and stop (Stop) functions.
The unique control process memory function can store 1024 points of control process memory data, and the memory modes include PV and PV+MV memory. The memory interval is adjustable from 1 to 60 seconds. Users can quickly browse by one-key operation, and the memory data is automatically refreshed according to the browsing time requirement. This function can quickly analyze the control effect and facilitate control maintenance.
Rich alarm outputs: 4 groups of alarm registers can be freely combined and freely defined to any physical output interface. They can also be set as event outputs, with an event output delay recovery command. Auxiliary second-channel sampling can be implemented; together with the alarm source and transmitter source parameter settings, the difference calculation alarm or difference calculation transmitter function can be realized.
Dual-row 4-digit digital tube and 20-line light column output percentage display, human-machine interaction operation, simple and easy to use.
Plug-and-play modular structure and rich output specifications meet various application requirements.
It adopts the standard MODBUS communication protocol, with strong versatility and high reliability.
Strong anti-interference performance, passing the industrial level-3 electromagnetic compatibility test requirements.
II. Main Technical Specifications
*  Input specifications and range:
Thermocouple: S (-50~1768), R (-50~1768), B (250~1820), K (-200~1372), N (-200~1300), E
(-200~1000), J (-200~1200), T (-200~400)
RTD: PT100 (-200~800), Cu50 (-50~150), Cu100 (-50~150),
Standard millivolt signal: custom 0~100mV
Standard resistance signal: custom 0~500 ohm
Standard voltage signal: 0~10V, 0~5V, 1~5V, custom 0~10V
Standard current signal: 4~20mA, 0~10mA, custom 0~20mA
*  Measurement accuracy: 0.2 class (±0.2%FS±1 digit)
*  Cold junction compensation: ±1°C
*  Sampling resolution: 1°C or 0.1°C
*  Sampling period: 0.5 s
*  Thermocouple break, RTD break and over-range detection, displays Sb
*  Control mode: on/off control, manual control, PID artificial intelligence control with auto-tuning function
*  Output mode: Scr SCR phase-shift trigger output
SSr solid state relay trigger output (15VDC/30mA), SCR zero-crossing trigger output
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, range set by software register
FrSS Limited solid state relay, SCR zero-crossing trigger, limiting threshold set by software register
FrrL Limited relay, limiting threshold set by software register
Scr3 Three-phase SCR software phase-shift trigger output
PnJ Forward/reverse relay position control output
*  Alarm function: 4 groups of alarm registers, freely mapped to each output position
10 alarm modes selectable (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, fault alarm, event output alarm)
*  Power supply voltage: 85~265VAC
*  Overall power consumption: less than 4W
*  Operating environment: temperature -10~+60°C, humidity 0~80RH%
III. Output Interface Modules
D1 On/off signal dry contact isolated input module
G1 Solid state relay drive voltage output module (DC15V/30mA)
I5 Optically isolated analog current output module
U5 Optically isolated analog voltage output module
J5 Relay contact output module (250VAC/3A, normally open)
J6 Relay contact output module (250VAC/0.8A, normally open)
J7 Dual relay contact output module (250VAC/0.8A, normally open)
J8 Relay contact output module (250VAC/3A, normally open + normally closed)
J9 Relay contact output module (250VAC/0.8A, normally open + normally closed)
S2 Optically isolated RS232 communication module