Samson 3374-11 - 9.10 Blockage

58 EB 8331-4 EN
Congurationlevel
− Fixedpositioningvalue(c43=FIX): The actuator switches to the manual mode and
moves the actuator stem to the Fixed positioning value for restart.
− Stopinmanuallevel(c43=STOP): The actuator switches to the manual mode and sets
the last positioning value to be the same as the manual positioning value.
Code Description WE Adjustment range
c43 Restart NORM NORM (normal)
ZERO (zero calibration)
FIX (xed positioning value)
STOP (stop in manual level)
When c43 = FIX
c44 Fixed positioning value for restart 0.0 % 0.0 to 100.0%
9.10 Blockage
Blockage detection (c51)
The actuator detects a valve blockage by comparing the travel after the torque-dependent
switch has been triggered with the travel measured on initialization. If the comparison shows
that the limit switch was triggered too early, this indicates that there is a valve blockage. A
blockage is indicated on the display by the
icon.
Remove blockage (c52)
When the Blockage removal function is active, the actuator stem extends and retracts 1 mm
at the adjusted stroking speed three times at the most in sequence.
Blocking protection (c53)
The blocking protection prevents the valve from seizing up. If the actuator stem is in the
closed position (0 %), it is extended slightly and then moved back to the closed position 24
hours after it last moved.
Code Description WE Adjustment range
c51 Blockage detection NO NO (function inactive)
YES (function active)
c52 Blockage removal NO NO (function inactive)
YES (function active)
c53 Blocking protection NO NO (function inactive)
YES (function active)