Smart Positioner
YT-3700 / 3750
Product Manual
Ver. 1.03
34
5.2.2
Terminals with micro-limit switch option
The input and output terminals of products equipped with micro-limit switches can be connected to an
external system as shown below. Refer to the table below for the signal name and function of each
terminal.
Fig. 5-3: Mechanical Switch Terminal
Terminal
name
Signal name
Function
1, LS-1
Common terminal for Limit Switch 1
Common contact terminal for Limit Switch 1
2, LS-1
Normal open signal for Limit Switch 1
The contact of the Limit Switch 1 is closed when
the valve passes through the preset position.
3, LS-1
Normal close signal for Limit Switch 1
The contact of the Limit Switch 1 opens when
the valve passes through the preset position.
1, LS-2
Common terminal for Limit Switch 2
Common contact terminal for Limit Switch 2
2, LS-2
Normal open signal for Limit Switch 2
The contact of the Limit Switch 2 is closed when
the valve passes through the preset position.
3, LS-2
Normal close signal for Limit Switch 2
The contact of the Limit Switch 2 opens when
the valve passes through the preset position.
