200
9. (F) Settings for Acceleration/Deceleration
9.1 Setting the acceleration and deceleration time
Setting the acceleration/deceleration time in the low-speed range (Pr.791,
Pr.792)
• If torque is required in the low-speed range (less than 10% of the rated motor frequency) under PM sensorless vector
control, set the
Pr.791 Acceleration time in the low-speed range
and
Pr.792 Deceleration time in low-speed range
settings higher than the
Pr.7 Acceleration time
and
Pr.8 Deceleration time
settings so that the mild acceleration/
deceleration is performed in the low-speed range. (When the RT signal is turned ON, the second acceleration/deceleration
time is prioritized.)
NOTE
• Set
Pr.791 (Pr.792)
to a value larger than the
Pr.7 (Pr.8)
setting. If set as
Pr.791 < Pr.7
, the operation is performed as
Pr.791
= Pr.7
. If set as
Pr.792 < Pr.8
, the operation is performed as
Pr.792 = Pr.8
.
Emergency stop function (Pr.1103)
• When the Emergency stop (X92) signal is ON, the deceleration stop is performed according to the settings in the
Pr.1103
Deceleration time at emergency stop
and
Pr.815 Torque limit level 2
.
• To input the X92 signal, set "92" in any parameter from
Pr.178 to Pr.189 (Input terminal function selection)
to assign
the function to a terminal.
• The X92 signal is a normally closed input (NC contact input) when it is input via an external input terminal, and a normally
open input (NO contact input) when it is input via communication.
• "PS" is displayed on the operation panel during activation of the emergency stop function.
NOTE
• The X92 signals can be assigned to an input terminal by setting
Pr.178 to Pr.189 (Input terminal function selection).
Changing the terminal assignment may affect other functions. Set parameters after confirming the function of each terminal.
Parameters referred to
Pr.3 Base frequency
Pr.10 DC injection brake operation frequency
Pr.29 Acceleration/deceleration pattern selection
Pr.125, Pr.126 (frequency setting gain frequency)
Pr.178 to Pr.189 (Input terminal function selection)
Low-speed range
(rated motor frequency/10)
Acceleration time
Slope set by
Pr.7
Deceleration time
Slope set by
Pr.8
Deceleration time
in low-speed range
Slope set by
Pr.792
Acceleration time
in low-speed range
Slope set by
Pr. 791
Time
Output
frequency (Hz)
ON
OFF
X92
ON
Time
Output frequency
Start signal
Deceleration
by an emergency stop
Normal
acceleration
OFF
ON
ON
Summary of Contents for FR-E800
Page 17: ...16 1 Introduction 1 3 Related manuals MEMO ...
Page 51: ...50 2 Basic Operation 2 8 I O terminal function assignment MEMO ...
Page 89: ...88 3 Parameters 3 4 Parameter list by function group number MEMO ...
Page 135: ...134 5 Speed Control 5 9 Troubleshooting in the speed control MEMO ...
Page 153: ...152 6 Torque Control 6 7 Troubleshooting in torque control MEMO ...
Page 195: ...194 8 E Environment Setting Parameters 8 18 Current average value monitor signal MEMO ...
Page 237: ...236 10 D Operation Command and Frequency Command 10 6 Operation by multi speed setting MEMO ...
Page 339: ...338 13 T Multi Function Input Terminal Parameters 13 9 Start signal operation selection MEMO ...
Page 455: ...454 16 G Control Parameters 16 13 Speed smoothing control MEMO ...
