Yaskawa Matrix Converter - Manual (Page 176)

Stopping Methods
6-
11
Stopping Methods
This section explains the parameter settings and functions to have the MxC stop the motor.
‹ Selecting the Stopping Method when a Stop Command is Sent
There are four methods of stopping the MxC when a Stop Command is sent:
• Decelerate to Stop (also referred to as, “Ramp to Stop”)
• Coast to Stop
• DC Injection Braking Stop
• Coast to Stop (with or without a timer)
Set parameter b1-03 to indicate how the MxC should stop the motor. The MxC is unable to coast to stop or use
DC braking when operating in Flux Vector Control.
„ Related Parameters
Parameter
Number
Name
Description
Setting
Range
Default
Change
during
Run
Control Methods
Display V/f
Open
Loop
Vector
Flux
Vector
b1-03
Stopping Method
Selection Selects the stopping method when the Run
Command is removed.
0: Decelerate to stop
1: Coast to Stop
2: DC Injection to Stop
3: Coast with Timer (A new Run Command
is ignored if received before the timer
expires).
0 to 3 * 0 No Q Q Q
Stopping Method
b1-05
Minimum Output
Frequency (E1-09)
or Less Operation
Selection Operation method when frequency reference
is less than minimum output frequency set in
E1-09.
0: Operates according to frequency reference
(E1-09 is disabled).
1: Output shuts off (coast to stop if less than
E1-09).
2: Operates according to E1-09 (frequency
reference set to E1-09).
3: Zero speed (frequency reference becomes
zero when less than E1-09).
0 to 3 0 No No No A
Zero-Speed Oper
b2-01
DC Injection Brak-
ing Start Fre-
quency Sets the frequency at which DC injection
braking starts when decelerate to stop (b1-03
= 0) is selected. If b2-01< E1-09, DC Injec-
tion braking starts at E1-09.
Note: Zero Speed restrictions are active in
Flux Vector Mode.
0.0 to
10.0
0.5 Hz No A A A
DCInj Start Freq
b2-02
DC Injection Brak-
ing Current Sets the DC injection braking current as a per-
centage of the MxC rated current.
Note: The DC excitation current is deter-
mined by the setting in E2-03 when
operating in Flux Loop Vector Control
Method.
0 to
100
50% No A A No
DCInj Current
b2-03
DC Injection Brak-
ing Time/DC Exci-
tation Time at Start Sets the time of DC injection braking at start
in units of 0.01 seconds.
0.00
to
10.00
0.00 s No A A A
DCInj Time
@Start