Samson 3738-20 Mounting And Operating Instructions page 17

Electronic Limit Switch Type
Version
Contacts Contact C
Limit contact for inter-
mediate position
Contact St
Fault alarm contact
Current specifications when contact A
is not connected
EB 8390 EN
3738-20-xxx1400xxx000
With integrated solenoid valve
PTO (power to open): responds when the valve moves through
the switching contact towards the operating position (P14)
PTC (power to close): responds when the valve moves through
the switching contact towards the fail-safe position (P14)
Responds when a status message or error message is generat-
ed
(always NC contact).
Contact B: I = 50 µA (wire breakage)
Contact C: I = 1.2 mA
Contact St: I = 1.2 mA
Technical data
3738-20-xxx1000xxxx00
For external solenoid valve
17