Mitsubishi Electric FR-E700 Instruction Manual page 245

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
mechanical 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 oc-
cur when the load is stopped upon contact in vertical motion applications, ensuring steady pre-
cise positioning.
Vibration
Fig. 6-45: Suppressing vibration in vertical motion applications
Pr.
Name
No.
Multi-speed setting
6
(low speed)
Second stall prevention
48
operation current
Stop-on contact control
270
selection
Stop-on contact excita-
275
tion current low-speed
multiplying factor
PWM carrier frequency at
276
stop-on contact
The parameter can be set when Pr. 160 "User group read selection" = 0.
FR-E700 EC
Without stop-on-contact control
Initial Setting
Description
Value Range
Sets the output frequency for
10Hz 0–400Hz
stop-on-contact control.
Sets the stall prevention opera-
0–200% tion level for stall prevention
9999
operation level.
9999 Pr. 22 setting
0 Normal operation
0
1 Stop-on-contact control
Set the force (holding torque)
0–300% for stop-on-contact control.
9999
Normally set 130% to 180%.
9999 Without compensation
Sets a PWM carrier frequency
0–9
for stop-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
4–6 Multi-speed setting
24–27
15 Jog frequency
48 Second stall preven-
tion operation cur-
rent
59 Remote function
selection
72 PWM frequency
selection
79 Operation mode
selection
128 PID action selection
178–184 Input terminal
function selection
292 Automatic accelera-
tion/deceleration
I001567E
Refer to
Section
6.6.1
6.6.2
6.3.5
6.6.3
6.15.1
6.18.1
6.20.1
6.10.1
6.7.4
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