Mitsubishi Electric FR-A820-00046 (0.4K), Instruction Manual

Page: 711 / 1218

Parameters (A) Application parameters
FR-A800 5 - 509
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.
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
I001567E
Fig. 5-237: Suppressing vibration in vertical motion applications
Pr. Name
Initial
value
Setting
range
Description
6
D303
Multi-speed setting (low
speed)
10 Hz 0 to 590 Hz Set the output frequency for stop-on-contact control.
22
H500
Stall prevention operation
level
150% 0 to 400%
Set the stall prevention operation level for stop-on-
contact control.
The smaller value set in either Pr. 22 or Pr. 48 has
priority.
48
H600
Second stall prevention
operation level
150% 0 to 400%
270
A200
Stop-on contact/load
torque high-speed
frequency control
selection
0
0 Normal operation
1 Stop-on-contact control
2
Load torque high-speed frequency control (Refer to
page 5-513.)
3
Stop-on c load torque high speed frequency
control (Refer to page 5-513)
11 Stop-on-contact control
E.OLT is invalid
under stop-on-
contact control
13
Stop-on c load torque high
speed frequency control
(Refer to page 5-513.)
275
A205
Stop-on contact excitation
current low-speed
multiplying factor
9999
0 to 300%
Set the force (holding torque) for stop-on-contact
control.
Normally, set it from 130 to 180%.
9999 No compensation.
276
A206
PWM carrier frequency at
stop-on contact
9999
0 to 9
Set a PWM carrier frequency for stop-on-contact
control.
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 setting value is 6 to 9.
(Valid at the output frequency of 3 Hz or less.)
0 to 4
9999 As set in Pr. 72 "PWM frequency selection".
Magnetic flux Magnetic flux Magnetic flux Sensorless Sensorless Sensorless
Without stop-on-contact control With stop-on-contact control
Lift
Vibration Complete stop
Lift