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Bit
Flag name
Simultaneous temperature
b9
rise parameter error status
b10
Self-tuning error
(fixed to 0)
b11 to b15
*1
The parameter indicates the values in CH Simultaneous temperature rise gradient data (address: 2D1H, 2D5H, 2D9H,
2DDH) and CH Simultaneous temperature rise dead time (address: 2D2H, 2D6H, 2DAH, 2DEH).
For details on the simultaneous temperature rise function, refer to the following. (Page 198, Section 8.3.17)
*2
If the flag turns to 1 (ON) on the other conditions, check the following contents according to the setting of CH Self-
tuning setting (address: 2C0H to 2C3H).
CH Self-tuning setting (address: 2C0H
to 2C3H)
1: Starting ST (PID Constants Only)
3: Starting ST (PID constants and
Simultaneous Temperature Rise
Parameter)
This area is enabled only for the following channels.
• CH1 to CH4 when the standard control is used
• CH3 and CH4 when mix control (normal mode) or mix control (expanded mode) is used
Condition on which a flag turns to 1 (ON)
This flag turns to 1 (ON) when simultaneous
*1
temperature rise parameter
has not been
calculated by self-tuning.
This flag turns to 1 (ON) when any of the following
operations was performed during the self-tuning.
• Set value (SV) setting change (only for the start-
up)
• PID constants change
• Setting change rate limiter change
• Output limiter change
• Output variation limiter setting change
• Control output cycle change
• Sensor correction change
• Primary delay digital filter change
• AUTO to MAN mode shift
• Forward/reverse action shift
This flag also turns to 1 (ON) in the following
cases.
• 6000 seconds (1 hour and 40 minutes) or longer
has passed after the ST start.
• The change rate of the temperature process
value (PV) during ST is less than 1.125
(/minute).
• The temperature process value (PV) became
out of the temperature measurement range.
• Required measurement data was not obtained
because the manipulated value (MV) did not
reach the upper limit output limiter value or the
lower limit output limiter value until the
measurement was completed.
• The temperature process value (PV), which was
supposed to increase after self-tuning was
started with the starting ST, decreased by 1
() or more instead.
• The temperature process value (PV), which was
supposed to decrease after self-tuning was
started with the starting ST, increased by 1
() or more instead.
(Unused)
• Check that wiring is correct in control loop.
• Set 4: Starting ST plus vibration ST to CH Self-tuning setting (address: 2C0H to 2C3H) and start control.
• Check that wiring is correct in control loop.
• If the simultaneous temperature rise parameter has been calculated, save the parameter. After that, set 4:
Starting ST plus vibration ST to CH Self-tuning setting (address: 2C0H to 2C3H) and start control. If the
simultaneous temperature rise parameter has not been calculated, check that wiring is correct in control loop.
Condition on which a flag turns to 0 (OFF)
*2
This flag turns to 0 (OFF) when any of the following
operations was performed.
• The corresponding channel shifted from operating
status to stop status (when CH Operation monitor
(RX11 to RX14) turned off).
• Do not run the ST (0) is set to CH Self-tuning setting
(address: 2C0H to 2C3H).
This flag also turns to 0 (OFF) in the following cases.
• When the self-tuning has started by the change of the
set value (SV)
• When the temperature process value (PV) moved out of
the stable condition and the vibration ST has started
Check contents
APPENDICES
A
307
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Table of Contents
Troubleshooting
