Samson 3374-10 - Electronic Limit Contacts; Restart

EB 8331-4 EN 57
Congurationlevel
9.8 Electronic limit contacts
The electronic limit contact can be triggered by the actuator stem position exceeding or fall-
ing below an adjustable switching point.
− Triggeredwhenthepositionexceedstheswitchingpoint: The limit contact is activated
when the actuator stem position moves beyond the switching point. The limit contact is
deactivated when the actuator stem moves below the switching point plus hysteresis.
− Triggeredwhenthepositionmovesbelowtheswitchingpoint: The limit contact is acti-
vated when the actuator stem position moves below the switching point. The limit contact
is deactivated when the actuator stem position moves beyond the switching point plus
hysteresis.
An activated limit contact remains permanently active if the switching point is smaller or larg-
er than the hysteresis. This limit contact can only be deactivated by a restart (see sec-
tion11.4) or by resetting to NONE (c24, c27).
Code Description WE Adjustment range
c24 Limit contact 1
Message in case of event
NONE NONE (inactive)
HIGH (value above limit)
LOW (value below limit)
c25 Switching point of limit contact 1 10.0 % 0.0 to 100.0%
c26 Hysteresis of limit contact 1 1.0 % 0.0 to 10.0%
c27 Limit contact 2
Message in case of event
NONE NONE (inactive)
HIGH (value above limit)
LOW (value below limit)
c28 Switching point of limit contact 2 90.0 % 0.0 to 100.0%
c29 Hysteresis of limit contact 2 1.0 % 0.0 to 10.0%
9.9 Restart
After the power supply returns after a power supply failure, the actuator starts according to
the restart conditions.
− Normal(c43=NORM): The actuator remains in automatic mode and immediately fol-
lows the input signal.
− Zerocalibration(c43=ZERO): The actuator performs a zero calibration.
NOTICE
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