LU-S14000 Series I/O Modules

Overview
LU-S14017 is a 16-bit A/D eight-channel fully differential analog input module that can acquire analog input signals such as voltage and current. All channels provide a programmable input range function, offering excellent cost performance for industrial measurement and monitoring applications; moreover, a voltage isolation of 3000V is provided between its analog input channels and the module, effectively preventing the module from being damaged by high-voltage surges. It supports the Modbus protocol and uses the RS-485 bus for communication transmission, with a built-in optocoupler providing 3000V isolation voltage. It features surge protection, spike absorption and lightning protection.

Main features
Superior immunity to interference (EMC)
•High ESD immunity Test results: air discharge ±12KV; contact discharge ±6KV
•Easily passes 3KV fast transient burst interference (EFT test)
•Lightning surge impact protection ±2KV
•Radiated noise immunity test An analog noise interference source is provided through a winding (Impulse voltage: 1KV, Impulse width: 1us); no abnormality after 10 min of application
•Voltage dips, short interruptions and voltage variation immunity test Power supply ramp ±20%Ut, time ramp 2s±20% Voltage dip and temporary interruption 40%Ut, duration 5s

Analog input
•Effective resolution: 16 bits •Channels: eight, fully differential
•Input types: mV, V, mA
•Input ranges: ±150mV, ±500mV, ±1V, ±5V, ±10V, ±20mA
•Isolation voltage: 3000Vdc
•Input surge protection: yes
•Fault and overvoltage protection: withstands ±30V
•Sampling rate: 10 samples/s
•Input impedance: 20MΩ
•Bandwidth: 13.1Hz @ 50 Hz, 15.72Hz @ 60Hz
•Accuracy: ±0.1% or better
•Zero drift: ±6μV/°C
•Full-scale drift: ±25ppm/°C
•CMR @ 50 / 60Hz: min 92dB

Communication
•Mode: RS-485
•Protocol: Modbus
•Isolation voltage: 3000Vdc
•Surge protection, lightning protection: yes

Built-in watchdog timer
Power supply
•Power requirement: +10~+30Vdc (unregulated)
•Power consumption: 1.7W