Santerno Sinus Penta - Page 377

PROGRAMMING GUIDE
SINUS PENTA
377/486
C234 Ramp Action at the End of Power Down
C234 Range
0 ÷ 2
0: Stop
1: Stand–by
2: Dcb
Default
0
0: Stop
Level
ENGINEERING
Address
1234
Function
When the motor speed during Power Down attains the Power Down end value
set in C235, three operating modes are possible depending on C234
programming:
[Stop]
If the drive is capable of bearing DC bus voltage, it will control the motor
until it stops irrespective of the speed value set in C235
. If power supply is
restored when the deceleration ramp is over, the RUN command must be
disabled and enabled again to accelerate the motor. If power supply is restored
when the motor is still decelerating, the speed of reference is forced to the motor
with the preset acceleration ramp.
[Stand–by] When decelerating, once the speed value set in C235
is
attained, the drive is put on stand–
by and the motor keeps decelerating (motor
idling). If power supply is restored, the same conditions as descr
ibed in the step
above (see [Stop]); instead of stopping the motor, the drive is put on stand–by.
[DCB] When decelerating, once the speed value set in C235
is attained, DC
braking occurs. Its duration depends on the speed value set in C235
and on DC
braking parameters (see the DC BRAKING MENU):
t* = C217 * ( C235 /C219 )
with C235/C219
equal to max. 10. If power supply is restored, the same
conditions as described in the step above occur (see [Stop]); instead of s
topping
the motor, the drive performs DC braking.
C235 Motor Speed at the End of Power Down
C235
Range
0 ÷ 5000
0 ÷ 5000 rpm
Default
0
0 rpm
Level
ENGINEERING
Address
1235
Function
Motor speed at the end of Power Down.
If C234 is set as [Stand–by], the drive is put on stand-by; if C234
is set as
[DCB], it determines DC braking. Both conditions occur during the deceleration
ramp due to Power Down and when the speed value set in C235 is attained.