Samson 3738-20, Mounting And Operating Instructions

Page: 56 / 84

56 EB 8390 EN
Operation
The electronic limit switch must be in the con-
figuration mode (SET). See page 40.
Display when P6 = NC
P19: Reading before the
test starts
After the test has started:
P19 : Simulation of
contact A
(limit switch for fail-
safe position)
P19 : Simulation of
contact B
(limit switch for
operating position)
P19 : Simulation of wire
break at contact B
P19 : Simulation of
contact C:
(signal on reaching
target range during
partial stroke test)
P19 : Simulation of fault
alarm contact
Turn
g
P19 (TSTC)
Press , P19 blinks
Turn
g
A/B/B_LB/C/St
All contacts are activated.
Press .
The contact selected is deactivated while the
rotary pushbutton is pressed.
Turn
g
ESC
Press to exit the parameter setting.
Note:
When P6 = NO, the logic for con -
tacts A, B and C is reversed. B_LB on
the display means the contact C is
activated.
9.4 Testing the solenoid valve
You can de-energize the solenoid valve while
the voltage is still applied using the
P20 pa-
rameter. In this case, the valve moves to the
fail-safe position.
Observe the assignment of contacts A and
B depending on the direction of action
(page 83).
The electronic limit switch must be in the con-
figuration mode (SET). See page 40.
P20: Reading before the
test starts
After the test has started:
P20 : Testing solenoid
valve
Example: PTO
%
Turn
g
P20 (TSTS)
Press , P20 blinks and ESC is displayed.
