Endress+Hauser Liquiphant FTL31 - Max and Min Safety Modes

Liquiphant FTL31 Electrical connection
Endress+Hauser 19
Maximum safety
Terminal assignment MAX output Yellow LED (ye)
2
1
3
4
L– L+
K
0.5A
1
2
2
1
Wire colors for M12 plug:
• 1 = BN (brown)
• 2 = WT (white)
• 3 = BU (blue)
• 4 = BK (black)
Symbols
K
Description
Yellow LED (ye) lit
Yellow LED (ye) not lit
External load
Minimum safety
Terminal assignment MIN output Yellow LED (ye)
L– L+
2
1
3
4
K
0.5A
4
11
1
4
Wire colors for M12 plug:
• 1 = BN (brown)
• 2 = WT (white)
• 3 = BU (blue)
• 4 = BK (black)
Symbols
K
Description
Yellow LED (ye) lit
Yellow LED (ye) not lit
External load
Function monitoring with M12 plug
Using a two-channel analysis, function monitoring of the sensor can be implemented in
addition to level monitoring, e.g. per relay switch, PLC, AS-i Bus I/O module.