Controllers & Temperature Controllers
Product Details · PRODUCT DETAILS
LU-906H Intelligent Temperature Difference Controller
The LU-906H intelligent temperature difference controller is a high-precision digital controller that combines multiple input types, output modes and control modes in one instrument.
I. Overview
The LU-906H smart temperature difference controller is an intelligent, high-accuracy digital controller. It integrates multiple input types, output modes, and control modes in one unit. By combining fuzzy theory with conventional PID control, it offers fast response, small overshoot, and high stability accuracy. The LU-906H adopts a dual 4-digit LED display and can show the measured values of two circuits simultaneously. It provides bumpless manual/automatic switching, auto-tuning, and a soft-start function on power-up.
The LU-906H smart temperature difference controller is mainly used to control the temperature difference between two temperature points, such as the temperature difference between the outlet and return water of chilled water and cooling water in air-conditioning systems, so that regardless of changes in system load, the temperature difference between outlet and return water remains constant, ensuring the cooling supply of the system stays in the optimal state and thereby achieving energy savings.
2. Technical Parameters
Basic error: ±(0.2%F.S±1) digit
Resolution: 1, 0.1
Display: dual 4-digit LED display + bar graph
Input specifications: K, S, B, T, E, J, Wre325, N
Pt100, Cu50, Cu100
0-10mA, 4-20 mA
0-5V, 1-5V
Special input: R, Wre526, mV, others
J1: Relay output (resistive 250VAC/3A, NO + NC)
J2: Relay output (resistive 250VAC/0.8A, NO)
T: Solid-state relay trigger output (12V/40mA)
T1: Single-channel SCR zero-crossing trigger output
T2: Two-channel SCR zero-crossing trigger output
I1: Control current output (0-10mA/4-20mA)
I2: Current transmitter output (0-10mA/4-20mA)
V1: DC12V/50mA supply module
V2: DC24V/50 mA supply module
V3: DC5 V/50 mA supply module
V5: Control/transmitter voltage (0-5V or 0-10 V)
R: RS232 communication module
S: RS485 communication module
C1: Single-phase SCR phase-shift trigger
C3: Three-phase three-wire SCR phase-shift trigger
C4: Three-phase four-wire SCR phase-shift trigger
Broken sensor or over-range: displays symbol Sb
Sampling period: 0.5 s
Power supply voltage: 85~264VAC
Power consumption: 4W
3. 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
LU-906H Intelligent Temperature Difference Controller User Manual
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