LU-S14000 Series I/O Modules

Overview
LU-S14053 provides 16 non-isolated digital input channels and supports dry contacts and wet contacts; for wet contacts the high level range is +4—30V and the low level range is 0—+2V. With dry contacts the effective transmission distance can reach 500m. 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

Digital input
•Channels: 16
•Digital input level: Dry contact: logic 0: shorted to ground logic 1: open. Wet contact: logic 0: max +2V logic 1: +3.5V~+30V
•Effective distance (dry contact only): max 500m

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: 1.2W