Mitsubishi Electric FR-F820-00046, Instruction Manual

Page: 551 / 940

Parameters (A) Application parameters
FR-F800 5 - 379
PID gain tuning error
When the read value of Pr. 1219 or the PID gain tuning status monitor display is "9, 90 to 96", tuning
has not been properly completed due to a tuning error. Remove the cause of the tuning error, and per-
form tuning again.
Monitor
value
Error definition Cause of tuning error Corrective action for error
9
Termination of tuning
due to activation of an
inverter protective
function
An inverter protective function is activated.
Remedy the cause.
(Refer to page 6-9.)
90 Input upper limit error
The measured value is higher than the PID
upper limit (Pr. 131 or Pr. 1143). Change the Pr. 131 or Pr. 1143
setting as appropriate.
91 Input lower limit error
The measured value is lower than the PID
lower limit (Pr. 132 or Pr. 1144). Change the Pr. 132 or Pr. 1144
setting as appropriate.
92 Deviation limit error
The deviation exceeded the PID deviation
limit (Pr. 553 or Pr. 1145). Change the Pr. 553 or Pr. 1145
setting as appropriate.
93 Timeout error
Tuning is not terminated within the time set
in Pr. 1211 after the start of PID gain tuning. Change the Pr. 1211 setting as
appropriate.
94 Calculation error The tuning calculation is inconsistent.
In the step response method,
change the Pr. 1212 and Pr. 1213
settings as appropriate.
In the limit cycle method, change
the Pr. 1217 setting as appropriate.
95 Setting error
PID control is disabled during tuning.
The PID control setting has been
changed during tuning.
In the limit cycle method, the Pr. 1215
setting is equal to or lower than the
Pr. 1216 setting.
Enable PID control.
Change the Pr. 1215 and
Pr. 1216 settings as appropriate.
96 PID mode error
PID gain tuning has been started during
automatic switchover or pre-charge
operation.
A stall prevention or regeneration
avoidance operation occurred during
PID gain tuning.
A condition for output shutoff by the
SLEEP function was satisfied during PID
gain tuning.
Frequency fluctuation occurred because
of the frequency jump, maximum
frequency, or minimum frequency
during PID gain tuning.
Change the setting of each function
as appropriate.
Tab. 5-185: Corrective actions for PID gain tuning errors