Memory-type Temperature Controllers

I. Overview
LU-922M memory-type on/off 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.
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. Threshold alarm, deviation alarm, etc. can be realized.
Dual-row 4-digit digital tube plus 20-line light column 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 5b
*  Control mode: on/off control
*  Output mode: SSr solid state relay trigger output (15VDC/30mA), SCR zero-crossing trigger output
rELA relay contact normally open output (250VAC/3A)
*  Alarm function: 4 groups of alarm registers, freely mapped to each output position
9 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)
*  Power supply voltage: 85~265VAC *  Overall power consumption: less than 4W
*  Operating environment: temperature -10~+60°C, humidity 0~80RH%
III. Output Interface Modules
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
S4 Optically isolated RS485 communication module
V6 Isolated 12V/50mA transmitter supply output module
V7 Isolated 24V/50mA transmitter supply output module