Omron EJ1G, User Manual

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36
Setup Procedure
Section 3-1
The heaters are first divided into groups and it is decided whether each
group will use gradient temperature control or 2-PID control. In this exam-
ple, there are three groups of gradient temperature control for three chan-
nels and one group of 2-PID control for three channels. The groups are
divided as shown in the following diagram.
The group settings are made with the following parameters.
Note (a) When the group settings are changed after temperature control
has been performed, the control-related parameters are not ini-
tialized. To redo the group settings after control has been per-
formed, be sure to initialize the setting parameters before
changing the group settings.
(b) The control operation cycle will get longer if there are a lot of
channels or groups performing gradient temperature control,
which may affect control performance. Refer to Characteristics on
page 171 for details.
Parameter Description
Number of Enabled
Groups Sets the total number of groups, consisting of those per-
forming gradient temperature control and those perform-
ing 2-PID control.
Initial Communica-
tions Unit No. Sets the communications unit number for the group’s ini-
tial channel.
Initial Channel Sets the initial channel for the initial communications unit
number.
Number of Enabled
Channels Sets the number of channels performing gradient temper-
ature control or 2-PID control.
Control Type Sets whether the group will perform gradient temperature
control or 2-PID control.
H
F
U
E
D
U
0 1 2 3 4 5 6
TC2
CH1
CH2
TC2 TC2 TC2 TC2 TC2
CH1 CH1 CH1 CH1 CH1
CH2 CH2 CH2 CH2 CH2
Group 1 (gradient)
Group 2 (gradient)
Group 3 (gradient)
Group 4 (2-PID)