Stop-On-Contact Control - Mitsubishi Electric FR-A820-00046 Instruction Manual

Parameters
5.14.5

Stop-on-contact control

To ensure accurate positioning at the upper limit, etc. of a lift, stop-on-contact control causes the me-
chanical brake to close while the motor creates a holding torque to keep the load in contact with a me-
chanical stopper, etc.
This function suppresses vibration that is likely to occur when the load is stopped upon contact in lift
applications, thereby ensuring reliable and highly accurate positioning stop.
Fig. 5-237:
Pr.
6
D303
22
H500
48
H600
270
A200
275
A205
276
A206
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
FR-A800
Magnetic flux Magnetic flux Magnetic flux Sensorless
Without stop-on-contact control
Vibration
Suppressing vibration in vertical motion applications
Name
Multi-speed setting (low
speed)
Stall prevention operation
level
Second stall prevention
operation level
Stop-on contact/load
torque high-speed
frequency control
selection
Stop-on contact excitation
current low-speed
multiplying factor
PWM carrier frequency at
stop-on contact
Sensorless Sensorless
With stop-on-contact control
Complete stop
Lift
Initial Setting
Description
value range
10 Hz 0 to 590 Hz Set the output frequency for stop-on-contact control.
Set the stall prevention operation level for stop-on-
150% 0 to 400%
contact control.
The smaller value set in either Pr. 22 or Pr. 48 has
150% 0 to 400%
priority.
0 Normal operation
1 Stop-on-contact control
Load torque high-speed frequency control (Refer to
2
page 5-513.)
Stop-on contact + load torque high speed frequency
0
3
control (Refer to page 5-513)
11 Stop-on-contact control
Stop-on contact + load torque high
speed frequency control
13
(Refer to page 5-513.)
Set the force (holding torque) for stop-on-contact
0 to 300% control.
9999
Normally, set it from 130 to 180%.
9999 No compensation.
Set a PWM carrier frequency for stop-on-contact
0 to 9
control.
For Real sensorless vector control, the carrier
frequency is always 2 kHz when the setting value is 0
9999
0 to 4
to 5 and always 6 kHz when the setting value is 6 to 9.
(Valid at the output frequency of 3 Hz or less.)
9999 As set in Pr. 72 "PWM frequency selection".
(A) Application parameters
Lift
I001567E
E.OLT is invalid
under stop-on-
contact control
5 - 509