TECO-Westinghouse F510 Series, Инструкция по эксплуатации

Страница: 225 / 444

4 - 153
07-09=2: DC braking to stop
When a stop command is issued, the inverter will turn off the output (Baseblock) and after the minimum
Baseblock time (07-18) has expired activate DC braking (07-07). Refer to Fig.4.3.50.
The DC braking time (t
DCDB
) of Figure 4.3.50 is determined by the value of 07-08 (DC Braking start time)
and the output frequency at the time the stop command was issued.
(07-08) x 10 x output frequency
t
DCDB
=
Fmax (01-02)
Note: Increase the minimum Baseblock time (07-18) in case an Overcurrent trip occurs during the DC
braking.
Output
frequency
Run
Time
Time
Stop
tb.b t
DCDB
tb.b :Minimum baseblock time (07 -18)
t
DCDB
:DC braking time
10
%
07-08 × 1
07-08 × 10
100
%
t
DCDB
Maximum output
frequency
(Fmax, 01- 02)
Output frequency
upon stop command
Figure 4.3.50 DC braking to stop
07-09=3: Coast to stop with timer
When a stop command is issued the motor will coast to a stop after the minimum Baseblock time (07-18)
has expired. The inverter ignores the run command until the total time of the timer has expired.
The total time of the timer is determined by the deceleration time (00-15, 17, 22 or 24) and the output
frequency upon stop. Refer to Fig.4.3.51
Output
frequency
Run
Time
Time
Stop
10% 100%
Maximum output
frequency
(Fmax, 01- 02)
Run Stop Run
T1
T1
：
Total Time
T1
Deceleration
Time
(e.g. 00-15)
Min.
baseblock
Time t
b.b
(07-18)
Output frequency
upon stop command
Figure 4.3.51 Coast to stop with timer