55
[MV rate-of-change]
For Heating control, if PV is lower than SV, output is generally turned from OFF to ON as
shown in (Fig. 8.1.3-1).
If MV rate-of-change is set, the output can be changed by the rate-of-change (Fig. 8.1.3-2).
This control is suitable for high temperature heaters (which are made from molybdenum,
tungsten or platinum, etc., and used at approx. 1500 to 1800 ) which are easily burnt out
from turning on electricity rapidly.
Usual output
Output when MV rate-of-change is set
(Fig. 8.1.3-1)
(Fig. 8.1.3-2)
8.2 Group Selection
There are 4 groups to be set for the controller; SV, Event group, PID group, AT group
and Engineering group.
Select a group with the
key, and set each item in the group with the
key.
PV Display
Group
Setting Items
• SV, Event group
(Fixed value control)
• SV, Event (EVT1, EVT4, EVT5)
(Fixed value control)
• Program Pattern group
(Program control)
• Step SV, Step time, Wait value,
Event (EVT1, EVT4, EVT5)
(Program control)
PID group
PID parameters
AT group
AT/Auto-reset Perform/Cancel, AT bias
Engineering group
Input parameters, Output parameters,
Event output parameters, Program
parameters, Other functions
For details of the Engineering group, see pages 27 to 50.
20 %/sec
10 %/sec
5 sec
OFF
100 %/sec
1 sec
10 sec
ON
