N700 Operating Instructions and Parts Manual
11. Explanation of C-Group
127
releasing signal is outputted, the inverter will not accelerate until the braking confirmation
which is set in (C016). If braking confirmation signal is not inputted within waiting time for
braking confirmation, the inverter will output braking error signal (BER) and would occur
the trip. If braking confirmation signal is not set to intelligent input braking terminal, the
waiting confirmation will be invalid, and after the inverter will output braking releasing
signal, proceed to
④
.
④
After braking confirmation signal is inputted(after braking releasing signal is outputted
when BOK is not selected), the inverter waits for acceleration, and then begins to
accelerates again and accelerates to the frequency.
⑤
When running command turns off, the inverter decelerates to releasing frequency and
turns braking releasing signal (BRK) off.
⑥
When braking confirmation signal (BOK) is set to intelligent input terminals, after braking
releasing signal turns off, the inverter will not decelerate during the waiting time for
braking confirmation which is set in (C016), and will wait for braking confirmation signal to
turn off.
If braking confirmation signal does not turn off within the waiting time for braking
confirmation, the inverter will output braking error signal (BER) and the trip will occur.
If braking confirmation signal is not set to intelligent input braking terminal, the waiting
time for braking confirmation will be invalid and after the inverter will output braking
releasing signal, proceed to
⑦
.
⑦
After braking confirmation signal turns off (after braking releasing signal turns off), the
inverter waits for the waiting time for stop, and then begins to decelerate again and
decelerates to 0 Hz.
C017 break releasing
frequency
Output frequency
Running
command
Braking releasing
output
Braking confirmation
signal
C015 waiting time for stop
C013 waiting time for conformation
C014 waiting time for
acceleration
C016 waiting time for braking
confirmation
C016 waiting time for braking
confirmation
C017 releasing frequency
⑦
②
④
③
⑥
Fig. 11- 4 Timing chart that BOK is selected to intelligent input terminals.
(2) When braking control function is used, if necessary, assign the following functions to
intelligent input/output terminals.
①
When signal outputted from external braking during releasing braking is inputted to an
inverter, one of the intelligent output terminals should be assigned braking conformation
signal: BOK(33).
②
One of the intelligent output terminals should be assigned to braking signal : BRK to
release braking.
And when output signal at the time of braking trouble is used, signal of braking trouble :
BER should be assigned.