JULABO SE-Z Heating Circulators - Manual (Page 47)

HE / SE
47
9.5.5. COSPEED - external
This parameter affects the temperature pattern only in case of external
control.
Possible parameters: 0.0 ... 5.0
During selftuning, the control parameters Xp, Tn and Tv of a controlled
system are automatically determined and stored. Depending on the
controlled system, time for tuning can be unequally longer. This
controller layout allows protection of sensitive objects requiring
temperature application.
°C
t
Setpoint
5
3
0
Int. temperature
Ext. temperature
As soon as a co-speed factor is set, it is
considered for calculating the control
parameters. As shown in the diagram,
tuning times become shorter the higher
the co-speed factor is, but overshooting
can happen in the internal system.
9.5.6. Control parameters – XPU-, XP-, TN-, TV- EXTERNAL
Setting range: 0.1 ...99.9
Setting range: 3 ...9999
Setting range: 0 ... 999
In most cases the control parameters preset in the factors are adequate
for achieving an optimum temperature sequence.
The control parameters allow adjustment to special control processes.
Setting range: 0.1 ... 99.9
Proportional range >Xpu<
The proportional range Xpu of the cascaded controller is only needed for
external control.