Mitsubishi Electric FR-A800 Series Instruction Manual page 274

 Block diagram
Speed limit
Terminal 2
Terminal 4
[Pr.858 = 0]
Terminal 1
[Pr.868 = 0]
Speed setting
RL
RM
RH
REX
Option
Operation panel
Parameter
[Pr.808, Pr.809]
Maximum
frequency
[Pr.1]
Terminal 1
[Pr.868 = 5]
Speed setting
NOTE
• To select coasting instead of deceleration stop with speed limit when the start command is turned OFF, set Pr.250 Stop
selection.
• The RT (Second function selection) signal and the X9 (Third function selection) signal are used to enable switching between
acceleration/deceleration time settings. The acceleration/deceleration time after switching depends on the settings in Pr.44
Second acceleration/deceleration time and Pr.45 Second deceleration time, or Pr.110 Third acceleration/deceleration
time and Pr.111 Third deceleration time. The acceleration/deceleration time is a period of time taken to reach Pr.20
Acceleration/deceleration reference frequency.
• Pr.21 Acceleration/deceleration time increments is used to change the setting increment.
• When the automatic restart after instantaneous power failure is selected, the inverter accelerates the motor from the frequency
search result frequency to the set frequency. (Pr.57 Restart coasting time ≠ 9999, Pr.162 Automatic restart after
instantaneous power failure selection = "10, 12, 13, 1010, 1012, or 1013")
• Pr.811 Set resolution switchover is used to change the setting increment for speed setting, operation speed monitoring, and
torque limit setting.
• Pr.862 Encoder option selection is used to change the Vector control compatible plug-in option or the control terminal option
for the first and second motors.
• Pr.1113 Speed limit method selection is used to change the direction of rotation, torque command polarity, and power
driving / regenerative driving status.
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AU signal
Terminal 2 bias [C2, C3(Pr.902)]
Terminal 2 gain [Pr.125, C4(Pr.903)]
OFF
Terminal 4 bias [C5,C6(Pr.904)]
ON Terminal 4 gain [Pr.126,C7(Pr.905)]
RT signal [Pr.822]
OFF ≠9999
=9999
filter
[Pr.832]
ON
≠9999
=9999
Multi-speed
selection
[Pr.4 to 6,
24 to 27,
232 to 239]
Terminal 1 bias [C12,C13(Pr.917)]
Terminal 1 gain [C14,C15(Pr.918)]
RT signal [Pr.822]
OFF ≠9999
=9999
filter
[Pr.832]
ON ≠9999
=9999
search engine
Analog input offset
adjustment [Pr.849]
Analog input
selection
[Pr.73]
[Pr.822]
[Pr.74]
[Pr.832]
[Pr.74]
Terminal 1 input, 0 to 10 V
Terminal 1 input, -10 to 0 V
Terminal 1 input, 0 to 10 V
Terminal 1 input, -10 to 0 V
[Pr.822]
[Pr.74]
[Pr.832]
[Pr.74]
5.4 Torque control under Real sensorless vector control and Vector control
Acceleration/deceleration*
Upper/lower limit setting
[Pr.1]
[Pr.2]
[Pr.7] [Pr.8]
* Acceleration/deceleration is
disabled when Pr.807 = "2" and
the setting value in Pr.1 Maximum
frequency is used for limiting the
speed.
Speed limit
Operation mode selection
[Pr.79] [Pr.807]
0
1
2
Reverse
Forward
Forward
Reverse
5. PARAMETERS
1
2
A
3
4
5
6
7
8
9
10
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