Fuji Electric PXZ Series Operation Manual page 13

Pid autotune controllers featuring fuzzy logic
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LoC
Lock-out: This function enables or disables changing
the settings of parameters.
Code:
0 - All parameter settings are changeable
1 - All parameter settings are locked; cannot be
changed
2 - Only the main setpoint can be changed; all other
parameter settings are locked and cannot be changed.
STAT Ramp/Soak Status: The Ramp/Soak program automati-
cally changes the setpoint value with time in accor-
dance with a preset pattern, as shown in the figure
below. This device allows a maximum of four ramp and
four soak segments. Ramp is the region in which SV
changes toward the target value. Soak is the region in
which the target value is maintained. STAT displays the
current ramp/soak status. No setting can be made.
oFF:
Not in operation
1-rP – 4-rP:
Executing 1st – 4th ramp
1-St – 4-St:
Executing 1st – 4th soak
End:
End of program
SV-1 Ramp Target Value: Sets the target value for each ramp
to
to
segment.
SV-4 Setting range: 0-100% of full scale
TM1r Ramp Segment Time: Sets the duration of each ramp
to
to
segment.
TM4r Setting range: 00.00 to 99hrs 59mins.
TM1S Soak Segment Time: Sets the duration of each soak
to
to segment.
TM4S Setting range: 00.00 to 99hrs 59mins.
Mod Ramp/Soak Mode: Up to 16 different modes of
ramp/soak operations are possible. Choose the appro-
priate code from the Table of Ramp/Soak Modes.
Setting: 0-15
Set Value
SV3
Third
ramp
SV2
Second
ramp
SV1
Second
soak
SV4
First
First
PV
ramp
soak
TM1R TM1S TM2R TM2S TM3R TM3S TM4R
Ramp: Region in which the setpoint changes toward the target value.
Soak: Region in which the setpoint stays unchanged at the target value.
Note 1: SV cannot be changed while the operation is running or suspended.
Note 2: The use of fuzzy control is inhibited while Ramp-Soak operation is being
performed.
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Third
Fourth
soak
Ramp
Fourth Soak
Time
TM4S
Table of Ramp/Soak Modes
MOD Power on start Output on END
0
No
Going on control
1
No
Going on control
2
No
Going on control
3
No
Going on control
4
No
Stand-by mode
5
No
Stand-by mode
6
No
Stand-by mode
7
No
Stand-by mode
8
Yes
Going on control
9
Yes
Going on control
10
Yes
Going on control
11
Yes
Going on control
12
Yes
Stand-by mode
13
Yes
Stand-by mode
14
Yes
Stand-by mode
15
Yes
Stand-by mode
1. Power on Start: Program starts from the current PV value.
In non-power-on-start the program starts from the
main SV value.
2. Output on END: Output condition at the end of the program (ProG=End)
3. Output on OFF:
Output condition when program is terminated (ProG=oFF)
4. Repeat function: Ramp-soak program operates repeatedly.
If the repeat function is off, the SV value on the last step is
maintained.
Stand-by mode:
Output -3%, Alarm off.
Going on Control: When program ends (End), control is at the SV value
on the last step.
When program is terminated (oFF), control is at the main SV
value.
12
Output on OFF Repeat function
Going on control
No
Going on control
Yes
Stand-by mode
No
Stand-by mode
Yes
Going on control
No
Going on control
Yes
Stand-by mode
No
Stand-by mode
Yes
Going on control
No
Going on control
Yes
Stand-by mode
No
Stand-by mode
Yes
Going on control
No
Going on control
Yes
Stand-by mode
No
Stand-by mode
Yes

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