JUMO 706030 LOGOPRINT 500 Printing Recorder Operating Manual - Manual (Page 26)

3 Operation and visualisation
26
3.3 Different chart speeds (paper feed)
The printing recorder is equipped with several different chart speeds, so that
the measurements can always be optimally interpreted on the chart.
Normal chart
speed The chart paper is transported with the speed which is programmed in the pa-
rameter Operating level
Î Chart speed.
Limit operation
(limit feed) If the value goes above or below the programmable limits
(Configuration level 1
Î Limit feed) then the paper transport will be switched
over to the speed programmed in Configuration level 2 Î Feed limit.
External
speed A signal at a logic input (extra code) can be used to switch to a chart paper
speed which is programmed in Configuration level 3
Î External speed.
Timed
operation
(feed time) This chart paper speed is valid for a programmable period of time, and is de-
fined by the parameter Configuration level 2
Î Feed time.
If it is set so that start time = end time, then the timed operation is inactive.
Different priorities apply for the various speeds.
v Section 3.5.6 “Switching the chart speed”
H
To avoid excessively frequent chart speed changes, a switching
differential (hysteresis) of 0.5% is applied to the switching level.
The switching differential is referred to the scaling and zoom.
Se = scaling end
Sa = scaling start
Ze = zoom end
Za = zoom start
Differential
(Se - Sa) x (Ze - Za) x 0.01
100
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