Multi-speed setting (low
Stall prevention operation
Second stall prevention
Stop-on contact/load torque
high- speed frequency control
Stop-on contact excitation
current low-speed scaling
PWM carrier frequency at
The setting range of FR-A820-03160(55K) or lower and FR-A840-01800(55K) or lower
The setting range of FR-A820-03800(75K) or higher and FR-A840-02160(75K) or higher
Connection and operation example
Forward rotation command
High-speed operation command
Middle-speed operation command
Stop-on contact selection 0
Stop-on contact selection 1
∗ The input terminal used differs according to the Pr.180 to Pr.189 settings.
Setting the stop-on-contact control
• Make sure that the inverter is in External or Network operation mode. (Refer to
• Select either Real sensorless vector control (speed control) or Advanced magnetic flux vector control.
• Set "1, 3, 11 or 13" in Pr.270 Stop-on contact/load torque high- speed frequency control selection.
• Set the output frequency for stop-on-contact control in Pr.6 Multi-speed setting (low speed).
Set the frequency as low as possible (about 2 Hz). If a frequency higher than 30 Hz is set, it operates with 30 Hz.
• When both the RT and RL signals are switched ON, the inverter enters the stop-on-contact control, and operation is
performed at the frequency set in Pr.6 independently of the preceding speed.
0 to 590 Hz
Set the output frequency for stop-on-contact control.
0 to 400%
Set the stall prevention operation level for stop-on-contact control.
0 to 400%
The smaller value set in either Pr.22 or Pr.48 has priority.
Load torque high-speed frequency control (Refer to
Stop-on contact + load torque high speed frequency control (Refer
Stop-on contact + load torque high
speed frequency control
Set the force (holding torque) for stop-on-contact control.
0 to 300%
Normally, set the scaling factor between 130 to 180%.
Set a PWM carrier frequency for stop-on-contact control.
0 to 9
For Real sensorless vector control, the carrier frequency is always 2
kHz when the setting value is 0 to 5 and always 6 kHz when the
0 to 4
setting value is 6 to 9. (Valid at the output frequency of 3 Hz or less.)
As set in Pr.72 PWM frequency selection.
E.OLT is invalid under stop-
∗ Goes into stop-on-contact control mode when
both RL and RT switch on.
RL and RT may be switched on in any order
with any time difference
(a): Acceleration time(Pr.7)
(b): Deceleration time(Pr.8)
(c): Second deceleration time(Pr.44/Pr.45)
5.14 (A) Application parameters