43
DECELERATION FREQUENCY HOLD (Parameter P18)
When the set deceleration time is too short for the inertial load, this parameter can be used to
temporarily reduce the deceleration rate to prevent an overvoltage trip.
Data setting value
Function details
0
Stall prevention function disabled
1
Stall prevention function enabled
Note 1)
Always set the setting data to "0" when using the regenerative brakes.
(The regenerative brake function will not operate when the default data "1" is set.)
Note 2)
The regenerative brake specifications are shown below. Always consider the
working conditions carefully before using.
Note that the inverter could be damaged if the specifications are exceeded during
use.
1) Maximum duty factor (%ED): 2%
2) Maximum working time: 3 seconds
3) Braking torque: 100%
Note 3)
Always use the Matsushita-dedicated option for the brake resistor.
Refer to the precautions on page 15 for installing the brake resistor, etc.
SW1, SW2, SW3 FUNCTION SELECT (Parameter P19, P20 and P21)
Used to set the control functions of SW1, SW2 and SW3 (control circuit terminals No. 7, 8
and 9).
(Also read the supplementary details on pages 68 to 72.)
Function
setting switch
SW1 (terminal No. 7)
SW2 (terminal No. 8)
SW3 (terminal No. 9)
Setting
parameter No.
P19 P20 P21
0
Multi-speed SW1 input
Multi-speed SW2 input
Multi-speed SW3 input
1
Reset input
Reset input
Reset input
2
Reset lockout input
Reset lockout input
Reset lockout input
3
Jog selection input
Jog selection input
Jog selection input
4
Auxiliary stop input
Auxiliary stop input
Auxiliary stop input
5
Coast-to-stop input
Coast-to-stop input
Coast-to-stop input
6
Frequency signal
changeover input
Frequency signal
changeover input
Frequency signal
changeover input
7
2nd characteristics
selection input
2nd characteristics
selection input
2nd characteristics
selection input
Setting data
8
Frequency , setting
