Modular Temperature Controller for Gradient Temperature Control
EJ1G
11
Gradient Temperature Control Settings
■
Gradient Group Settings
The gradient group settings are made on the HFU, as described
below.
Example:
In this example, 3-channel gradient temperature control is
performed by heater blocks in three locations.
•
Gradient temperature control is divided into three groups.
•
One channel of 2-PID control is used for each heater block (making
a total of three channels).
•
All channels are set to detect heater burnouts.
For the group settings, 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 example, there are three groups of gradient
temperature control for three channels, and one group of 2-PID
control for three channels. The groups are divided as shown below.
Group Division into Gradient Temperature Control and 2-PID
Control
The group settings are made with the following parameters.
Note:
When the group settings are changed after temperature control
has been performed, the control-related parameters are not
initialized. To redo the group settings after control has been
performed, be sure to initialize the setting parameters before
changing the group settings.
The group settings for this example are as given here.
The HFU handles all of the operations for gradient temperature
control and 2-PID control. The maximum number of enabled
channels that can be controlled is selected at the HFU from 4, 8, 16,
or 32 channels, and that number of channels is allocated for the
number of groups used.
In this example, the maximum number of enabled channels is three,
so the HFU allocates groups in units of four channels each. The HFU
recognizes the following channels for the Basic Unit.
Allocation of Channels Inside the HFU
Parameter
Description
Number of enabled
groups
Sets the total number of groups, consisting of
those performing gradient temperature control
and those performing 2-PID control.
Initial Communications
Unit No.
Sets the communications unit number for the
group's initial channel.
Initial channel
Sets the initial channel for the initial
communications unit number.
Number of enabled
channels
Sets the number of channels performing
gradient temperature control or 2-PID control.
Control type
Sets whether the group will perform gradient
temperature control or 2-PID control.
0
HFU
HFU: Advanced Unit
TC2: 2-channel Basic Unit
EDU: End Unit
1
TC2
2
TC2
3
TC2
4
TC2
5
TC2
6
TC2 EDU
Lower heater (gradient temperature control performed for three heaters)
Heater block 1
Heater block 2
Heater block 3
Upper heater (2-PID control)
0
HFU
1
CH1
2
CH1
Group 1 (Gradient)
3
CH1
4
CH1
5
CH1
6
CH1
CH2 CH2 CH2 CH2 CH2 CH2
TC2 TC2 TC2 TC2 TC2 TC2
EDU
Group 2 (Gradient)
Group 3 (Gradient)
Group 4 (2-PID)
Variable
type
Address
Parameter
Setting value
F1 (B1)
0000
Number of enabled groups
4
0100
Group
1
Initial Communications Unit
No.
1
0101
Initial channel
0
0102
Number of enabled
channels
3
0103
Control type
0: Gradient
temperature
control
0200
Group
2
Initial Communications Unit
No.
2
0201
Initial channel
1
0202
Number of enabled
channels
3
0203
Control type
0: Gradient
temperature
control
0300
Group
3
Initial Communications Unit
No.
4
0301
Initial channel
0
0302
Number of enabled
channels
3
0303
Control type
0: Gradient
temperature
control
0400
Group
4
Initial Communications Unit
No.
5
0401
Initial channel
1
0402
Number of enabled
channels
3
0403
Control type
1: 2-PID
control
0
HFU
1
2
Group 1 (Gradient)
3
4
5
6
TC2 TC2 TC2 TC2 TC2 TC2
EDU
Group 2 (Gradient)
Group 3 (Gradient)
Group 4 (2-PID)
CH1 CH3 CH6 CH9 CH11 CH14
CH2 CH5 CH7 CH10 CH13 CH15