Summary:

LU-S14052 offers fully independent isolated 8 digital input channels, supports wet contact. For wet contact, the high level input is +4 ~ +30V, the low level input is 0 ~ +1V. The isolation voltage between each channel is 5000VDC, the input impedance is 3 KΩ/0.5 W. LU-S14052 supports Modbus protocol, uses RS-485 to communicate, has built-in optical coupler, can provide 3000VDC isolation voltage. LU-S14052 also has the functions of surge protection, surge absorption, thunder-proof etc.

Main Feature:

Excellent EMC performance

1. High Anti-Electrostatic, test result:
    Air Discharge: ± 12 KV
    Contact Discharge: ± 6 KV
2. Easy to pass 3 KV Electrical Fast Transient/Burst Immunity Test (EFT test)
3. Lighting Surge Immunity: ± 2 KV
4. Radiated & Noise Immunity Test
    With noise interference simulated by multi-circle wire

   (Impulse amplitude: 1 KV, bandwidth: 1 µs) by 10 minutes, no abnormal phenomena
5. Voltage Dips, Short Interruptions, and Voltage Variations Immunity Test  
   Gradual change of voltage: ± 20% Ut, 
   Gradual change of time: 2 s ± 20%
   Voltage Dips and Short Interruptions: 40% Ut  
    The duration time: 5 s

Digital Input
● Channels: 8 (Fully independent isolated channels)
● Input Level:
   Logic Level 0: +1 V max
   Logic Level 1: +3.5 V ~ +30 V 
● Isolation Voltage: 5000 VRMS
● Input Impedance: 3 KΩ/0.5 W

Communication
● Mode: RS-485
● Communication Protocol: Modbus
● Isolation Voltage: 3000 VDC
● Surge-protection & Thunder-proof: Yes

                              Watchdog Timer Built in

Power
● Power: Unregulated +10 ~ +30 VDC
● Power Consumption: 1.0 W