N700 Operating Instructions and Parts Manual
12. Explanation of H-Group
136
(4) Precautions
①
Set motor base frequency (F002), motor voltage selection (F013), and motor rated
current(F017) to the specification of the motor measued.
②
The motor capacity which is measured is to the maximum capacity of an application motor
and below 1 level capacity.
③
In the state that the DC braking selection (A081) is set validly 1(VALID), the accurate
motor constant will not be measured. Please set DC braking selection invalidly
0(INVALID). (Initial value is invalid.)
④
In the case of selecting 2(VALID IN ROT.) that the motor rotates in autotuning
selection(H001), be cautious the following points,
z
It causes no trouble to accelate up to 80% of the base frequency,
z
Do not operate the motor from outside.
z
Do not release the brake.
z
Torque is not enough during autotuning. In application like an elevator, as it is
possibility to slip down.
z
The motor should be removed from the machine of the load and excute autotuning by
itself. (In this case, as inertia motor J is motor itself, add the motor shaft converting
value to inertia motor.)
z
In the machine restricted the motor shaft revolution permit (elevator, ball screw, and
so on), the mode H001=1(VALID NOT ROT.) should be selected in which operates
autotuning without rotating.
⑤
Sometimes, the motor can rotate in spite of selecting 1 (VALID NOT ROT) in H001.
If the motor rotates in spite of selecting 1 (VALID NOT ROT), set the autotuning selection
to the mode H001=2(VALID IN ROT.).
⑥
When operating autotuning by using one class low motor. Validate overload restriction
function, then set the overload restriction level 1.5 times as high as rated output current of
motor.
(5) Setting
method
①
Set the autotuning selection (H001) to 1(VALID NOT ROT.) or 2(VALID IN ROT.) and push
the store(STR) key.(but, RUN command source(F011=2) must be OPE)
②
Turn the Run command ON.
After turning the Run command ON, the motor automatically runs in the following order of
(1) to (4).(
z
The first DC excitation (not rotate)
z
The second AC excitation (not rotate)
z
V/f Operation (When H001 is set to 1(VALID NOT ROT.), this is not operated.)
z
Display the tuning data.