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84
Setting Control Specifications
Section 4-3
Starting Conditions
for the Disturbance
Overshoot
Adjustment Function
The Disturbance Overshoot Adjustment Function will operate after the pro-
cess value (PV) has stabilized in the Disturbance Rectification Band and the
deviation is larger than the Disturbance Judgment Width.
• When the Disturbance Judgment Width is positive, the Disturbance Over-
shoot Adjustment Function will operate if a disturbance causes the pro-
cess value (PV) to fall. When the Disturbance Judgement Width is
negative, the Disturbance Overshoot Adjustment Function will operate if a
disturbance causes the process value (PV) to rise.
• The Disturbance Overshoot Adjustment Function will not operate in the
following situations:
• When the Disturbance Rectification Band or Disturbance Judgment
Width parameter is 0
• When the set point is changed (when the set point change width ex-
ceeds the Disturbance Rectification Band)
• During autotuning
• During ON/OFF control
• During PD control (I = 0.0)
4-3-10 Operation during Errors
This parameter can be used to select the operation when an error occurred.
Note
This parameter can be set only when operation is stopped.
When this parameter has been changed, the new setting becomes effective
the next time a software reset is performed for the Unit or the next time power
is turned ON.
• When setting 1 (MV at PV Error) is being used, set the MV at PV Error in
variable type D5/95. For details, refer to
MV at PV Error
on page 77.
• If this parameter is set to 2: stop control, control will stop when an error
occurs and will not be restored automatically even if the error is cleared.
Execute the Reset Error operation command to restore operation.
SP
Temperature
Time
The Disturbance Overshoot Adjustment Function does not operate.
The Disturbance Overshoot Adjustment Function operate.
Disturbance Rectification
Band
Disturbance Judgment
Width
Variable type
Parameter name
Setting range
Default
F0/B0
Operation During Error (Selection B)
(Common)
0: Notification only
(continue)
1: MV at PV Error
2: Stop control
0
Conditions for use
There must be a CT input.
Summary of Contents for EJ1 EtherCAT
Page 2: ...EJ1 Modular Temperature Controllers User s Manual Revised July 2008 ...
Page 3: ...iv ...
Page 19: ...xx ...
Page 213: ...188 Detailed Description of Services Section 6 4 ...
Page 227: ...202 Detailed Description of Services Section 7 5 ...
Page 303: ...278 Index ...
Page 305: ......