Samson 3374 Series - Direction of Action; Actuator Stem Extended; Actuator Stem Retracted

5-14 EB 8331-4 EN
Installation
Application: Three-step mode (3STP)
–
+1 IN
–1
IN
+2
IN
–2
IN
+3
IN
–3
IN
+4
IN
4
IN
+
–
Binarysignal
Three-wire connection: Four-wire connection:
–
+1 IN
–1
IN
+2
IN
–2
IN
+3
IN
–3
IN
+4
IN
4
IN
Binarysignal
Retracts
:
Extends
:
Î Wire all the inputs free of voltage.
Fig.5-16: Terminal assignment for 'Three-step mode' application
Application: Temperature closed-loop control
upon input signal failure (POSF)
–
+1 IN
–1
IN
+2
IN
–2
IN
+3
IN
–3
IN
+4
IN
4
IN
0(4) ... 20 mA
0(2) ... 10 V
Pt 1000
Binarysignal
Î Wire the input free of voltage.
Fig.5-17: Terminal assignment for 'Temperature closed-loop control upon input signal failure'
application