EB 8331-4 EN 59
Congurationlevel
9.11 Travel
Limited travel range (c63)
The Limited travel range parameter determines in % how far the actuator stem can move at
the maximum. The rated travel (c61) acts as the reference. When c63 = 100.0%, the travel
range is not limited.
Code Description WE Adjustment range
c61 Rated travel [mm]
u Read only
c63 Limited travel range 100.0 % 10.0 to 100.0%
Speed level (c64)
The actuator stem moves to the position determined by the input signal at the selected stroking
speed. There are two different speed levels (NORM and FAST).
The transit time (c66) is calculated from the travel and the stroking speed (c65). The transit time
is the time that the actuator stem needs to move through the adjusted travel. The following ap
-
plies:
Transit time [s] =
Travel [mm]
Stroking speed [mm/s]
Code Description WE Adjustment range
c64 Speed level NORM NORM (normal), FAST (fast)
c62 Gear version
u Read only
c65 Stroking speed [mm/s]
u Read only
c66 Transit time [s]
u Read only
Dead band (switching range)
The dead band suppresses slight movements of the stem. The dead band represents the sum
of the positive and negative hysteresis. After the actuator has been stationary, the input sig-
nal must change by at least half of the dead band to cause the actuator to move again.
Code Description WE Adjustment range
c67 Dead band (switching range) 2.0 % 0.5 to 5.0%
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