Stop-On Contact Control Function(Pr. 6, Pr. 48, Pr. 270, Pr. 275, Pr. 276) - Mitsubishi Electric FR-E700 Instruction Manual

Parameter
6.9.4 Stop-on contact control function
(Pr. 6, Pr. 48, Pr. 270, Pr. 275, Pr. 276)
To ensure accurate positioning at the upper limit etc. of a lift, stop-on-contact control causes a me-
chanical brake to be closed while the motor is developing a holding torque to keep the load in contact
with a mechanical stopper etc. This function suppresses vibration which is liable to occur when the
load is stopped upon contact in vertical motion applications, ensuring steady precise positioning.
Vibration
Fig. 6-45: Suppressing vibration in vertical motion applications
Pr. No. Name
Multi-speed setting
6
(low speed)
Second stall prevention
48
operation current
Stop-on contact control
270
selection
Stop-on contact excitation
275
current low-speed multiplying
factor
PWM carrier frequency at stop-
276
on contact
The parameter can be set when Pr. 160 "User group read selection" = 0.
This parameter allows its setting to be changed during operation even if "0" (initial value) is set in
Pr. 77 "Parameter write selection".
FR-E700 SC EC/ENE
Without stop-on-contact control
Initial Value Setting Range Description
Sets the output frequency for stop-on-
10 Hz 0–400 Hz
contact control.
Sets the stall prevention operation level
0–200%
for stall prevention operation level.
9999
9999 Pr. 22 setting
0 Normal operation
0
1 Stop-on-contact control
Set the force (holding torque) for stop-
0–300% on-contact control.
9999
Normally set 130% to 180%.
9999 Without compensation
Sets a PWM carrier frequency for stop-
0–9
on-contact control.
9999
As set in Pr. 72 "PWM frequency
9999
selection".
AD MFVC AD MFVC AD MFVC GP MFVC GP MFVC GP MFVC
With stop-on-contact control
Complete stop
Lift
Parameters referred to
Motor brake and stop operation
Lift
Refer to
Section
4–6 Multi-speed setting 6.6.1
24–27
15 Jog frequency 6.6.2
48 Second stall prevention 6.3.5
operation current
59 Remote function selection 6.6.3
72 PWM frequency selection 6.15.1
79 Operation mode selection 6.18.1
128 PID action selection 6.20.1
178–184 Input terminal 6.10.1
function selection
292 Automatic acceleration/ 6.7.4
deceleration
I001567E
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