11
12
13
14
15
16
17
18
19
20
439
16. (G) Control Parameters
16.6 DC injection brake, zero speed control, servo lock, and magnetic flux decay output shutoff
• To input the LX signal, set "23" in any of
Pr.178 to Pr.189 (Input terminal function selection)
to assign the function.
NOTE
• Changing the terminal assignment using
Pr.178 to Pr.189 (Input terminal function selection)
may affect the other functions.
Set parameters after confirming the function of each terminal.
• Performing pre-excitation (LX signal and X13 signal) under torque control may start the motor running at a low speed even
when the start signal (STF or STR) is not input. This product with the start command ON may also rotate the motor at a low
speed when the speed limit value is set to zero. Confirm that the motor running does not cause any safety problems before
performing pre-excitation.
• Note that during the pre-excitation operation, a voltage is applied to the motor even when the [RUN] LED on the operation
panel or the FWD/REV indicator on the parameter unit is OFF.
• When offline auto tuning (
Pr.96 Auto tuning setting/status
= "1 or 11") is performed during pre-excitation operation, pre-
excitation is disabled.
• When the LX signal is ON and the start signal is OFF at the automatic restart after instantaneous power failure, the motor does
not decelerates to stop from the detected motor speed, and pre-excitation (zero speed control / servo lock) is applied.
Parameters referred to
Pr.13 Starting frequency
Pr.71 Applied motor
Pr.80 Motor capacity
Pr.178 to Pr.189 (Input terminal function selection)
CAUTION
• Install a mechanical brake to make an emergency stop or to stay stopped for a long time.
• Wait until the machine stops completely, and fix the motor with a mechanical brake, then turn the LX signal (pre-
excitation) OFF.
Operation
frequency
Time
Pr. 10
Zero speed control
Servo lock
When
Pr. 850
= 1
Operation time
ON
Normal operation
Normal operation
Pr. 11
(Hz)
Output frequency
LX signal
Содержание FR-E800
Страница 17: ...16 1 Introduction 1 3 Related manuals MEMO ...
Страница 51: ...50 2 Basic Operation 2 8 I O terminal function assignment MEMO ...
Страница 89: ...88 3 Parameters 3 4 Parameter list by function group number MEMO ...
Страница 135: ...134 5 Speed Control 5 9 Troubleshooting in the speed control MEMO ...
Страница 153: ...152 6 Torque Control 6 7 Troubleshooting in torque control MEMO ...
Страница 195: ...194 8 E Environment Setting Parameters 8 18 Current average value monitor signal MEMO ...
Страница 237: ...236 10 D Operation Command and Frequency Command 10 6 Operation by multi speed setting MEMO ...
Страница 339: ...338 13 T Multi Function Input Terminal Parameters 13 9 Start signal operation selection MEMO ...
Страница 455: ...454 16 G Control Parameters 16 13 Speed smoothing control MEMO ...
Страница 481: ...480 18 Appendix 18 4 Parameters functions and instruction codes under different control methods MEMO ...