Isolators / Distributors
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LU-GK Digital Signal Isolator
The LU-GK digital signal isolator connects field switches or proximity switches and, after isolation, transmits signals to control systems or other modular instruments via relay contacts or transistor level outputs. It uses an independent DC supply with isolation between power supply, input and output. Input types include switches and NAMUR proximity switches per DIN 19234, with a 7-9V input supply.
I. Overview
The LU-GK switch signal isolator is suitable for connecting on-site switches or proximity switches, etc.; through isolation, it transmits them to the control system or other unit combination instruments by relay contact, transistor level signal and other output modes.
The isolator is powered by an independent DC power supply, with isolation between power supply, input and output.
II. Technical parameters
● Input
Input type: switch, NAMUR type proximity switch conforming to DIN19234 standard
Input supply: 7~9V (open circuit, 1KΩ internal resistance)
Short-circuit current: approx. 8mA
Operating characteristic: input current >2.1mA or input resistance <2K, output closed, yellow indicator lamp on.
Input current <1.2mA or input resistance >10K, output open, yellow indicator lamp off.
● Output
A. Relay output: 2A/30VDC or 0.5A/125VAC
Response time: ≤10ms
B. Transistor output: external supply voltage≤40V
Drive output current: ≤40mA
Response time: ≤1ms
● Power supply
Power supply voltage: 20~35VDC
Power supply protection: reverse connection protection, overvoltage and overcurrent protection
Current consumption: ≤42mA (24V)
● General technical parameters
Panel switch functions:
|
Status |
Channel 1 |
Channel 2 |
||
|
K3 |
K4 |
K1 |
K2 |
|
|
ON |
Fault detection enabled |
Logic normal |
Fault detection enabled |
Logic normal |
|
OFF |
Fault detection disabled |
Logic reverse |
Fault detection disabled |
Logic reverse |
Insulation resistance: ≥100MΩ
Insulation strength: 1500VAC; 1min
Operating temperature: -20~+60°C
LU-GK Digital Signal Isolator Selection Guide
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