Mitsubishi Electric 800 Series Instruction Manual page 358

 Performing tuning
• Before performing tuning, check the monitor display of the operation panel or the parameter unit if the
inverter is in the state ready for tuning. (Refer to 2) below.) Turning ON the start command while tuning is
unavailable starts the motor.
• In the PU operation mode, press
(STF signal or STR signal). Tuning will start.
NOTE
• Satisfy the required inverter start conditions to start offline auto tuning. For example, stop the input of MRS signal.
• To force tuning to end, use the MRS or RES signal or press
signal or STR signal) OFF also ends tuning.)
• During offline auto tuning, only the following I/O signals are valid (initial value).
Input terminals <effective signals>: STP (STOP), OH, MRS, RT, RES, STF, and STR
Output terminals: RUN, OL, IPF, CA, AM, and A1B1C1
• When the rotation speed and the output frequency are selected for terminals CA and AM, the progress status of offline
auto tuning is output in fifteen steps from CA and AM.
• Do not perform ON/OFF switching of the Second function selection (RT) signal during offline auto tuning. Auto tuning will
not be performed properly.
• When the offline auto tuning is selected (Pr.96 Auto tuning setting/status = "101"), the motor rotates. Take caution and
ensure the safety.
• Since the Inverter running (RUN) signal turns ON when tuning is started, pay close attention especially when a sequence
which releases a mechanical brake by the RUN signal has been designed.
• When executing offline auto tuning, input the run command after switching ON the main circuit power (R/L1, S/L2, T/L3)
of the inverter.
• While Pr.79 Operation mode selection = "7", turn the PU operation external interlock (X12) signal ON to tune in the PU
operation mode.
• Monitor is displayed on the operation panel and parameter unit during tuning as below.
Pr.96 setting value
(1) Setting
(2) During tuning
(3) Normal completion
• Note: Offline auto tuning time (with the initial setting)
Offline auto tuning setting
No motor rotation (Pr.96 (Pr.463) =
"1")
With motor rotation (Pr.96 (Pr.463) =
"101)
/ on the operation panel. For External operation, turn ON the start command
1
Parameter unit display
READ:List
TUNE
TUNE
1
STOP PU
TUNE
TUNE
2
STF FWD PU
STF
TUNE 3
TUNE
COMPLETION
COMPLETION
STF STOP PU
STF
Approx. 25 to 120 s
(The time depends on the inverter capacity and motor type.)
Approx. 40 s
(The following offline auto tuning time is set according to the acceleration/deceleration time
setting. Offline auto tuning time = acceleration time + deceleration time + approx. 30 s)
on the operation panel. (Turning the start signal (STF
101 1
AutoTune
READ:List
TUNE
101
--- STOP
STOP PU
PREV
AutoTune
TUNE
102
STF FWD
FWD PU
PREV
AutoTune
TUNE
103
Completed
STF STOP
STOP PU
PREV
Time
101
Operation panel display
12:34
AutoTune 12:34
TUNE
1
101
PU
--- STOP PU
NEXT
PREV NEXT
12:34
AutoTune 12:34
TUNE
2
102
PU STF FWD PU
NEXT
PREV NEXT
12:34 AutoTune 12:34
TUNE
3 103
Completed
PU STF STOP PU
NEXT PREV NEXT
5. PARAMETERS
5.10 (C) Motor constant parameters
3
4
5
5
5
6
7
8
9
10
357