Mitsubishi Electric 800 Series, Инструкция по эксплуатации, Страница: 464 / 727

(A) Application parameters
PARAMETERS
463
5
GROUP
A
5.14.5
Stop-on-contact control

The setting range of FR-A860-01080 or lower

The setting range of FR-A860-01440 or higher
 Connection and operation example
To ensure accurate positioning at the upper limit, etc. of a
lift, stop-on-contact control causes the mechanical brake to
close while the motor creates a holding torque to keep the
load in contact with a mechanical 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.
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 466 .)
3
Stop-on c load torque high speed frequency control (Refer to
page 466 )
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 466 .)
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>
Vibration Complete stop
Lift Lift
<With stop-on-contact control>
Power
supply
Forward rotation command
High-speed operation command
Middle-speed operation command
Stop-on contact selection 0
Stop-on contact selection 1
MCCB
R/L1
S/L2
T/L3
STF
RH
∗
RM
∗
RL
∗
RT
∗
SD
U
V
W
MC
Mechanical
brake
Motor
∗
The input terminal used differs according to the Pr.180 to Pr.189 settings.
•Sink logic
(a) (b) (c)
Time
Pr.4
RH
RM
RL
RT
Pr.5
Pr.6
0
Normal mode
Stop-on contact
control mode
(a): Acceleration time ( Pr.7 )
(b): Deceleration time ( Pr.8 )
(c): Second deceleration time ( Pr.44 / Pr.45 )
∗
ON OFF
ON OFF
ON OFF
ON
∗
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
Output frequency