Function Of Issuing A 0Hz Command During A Halt - Toshiba TOSVERT VF-AS1 Instruction Manual

Output frequency [Hz]
DC braking start frequency
Operation signal (F-CC)
Operation standby signal (ST-CC)
Note 1: If the motor shaft fixing control parameter
the DC braking start frequency
activated and the motor shaft fixing control continues regardless of the setting of the DC braking time
parameter
Note 2: If a power failure occurs during motor shaft fixing control and the motor starts to a coast, motor shaft fixing
control will be canceled. Also, if the inverter trips during motor shaft fixing control and is restored to working
order by the retry function, motor shaft fixing control will be canceled.

6.8.3 Function of issuing a 0Hz command during a halt

: 0Hz command output selection
• Function
This function controls the motor in the zero-speed state at the time of stop. If this function is set up, the
0Hz command will be put out instead of DC braking at the time of a stop,and a motor will be controlled in
the setting time stop state. The monitor display serves as
operates only at the time of vector control with a sensor (
Refer to DC braking (Section 6.8.1) for conditions of operation. The position of DC braking is served as an
operation which sets the operation frequency command to 0Hz.
[Parameter setting]
Title
0Hz command output selection
DC braking starting frequency
DC braking time
Note 1: This function doesn't operate when
Note 2: If this function is set up, motor shaft fixing control
Note 3: This function doesn't operate at the time of a torque control.
Note 4: This function doesn't operate except
function, the option board for PG feedback is required. Other than the vector control with a sensor
the usual DC braking operates.
Note 5: Since the reference frequency that will suspend the motor abruptly from the state of high rotation if (
is set up highly, please be careful. A trip may occur according to load conditions.
Note 6: This parameter has a function similar to the DC braking function, which is activated by a command from the
terminal board or an external control device (input terminal function
control device). To the DC braking function which will be activated if
(DC braking), and to the DC braking function which will be activated if
to (DC braking), but it issues 0Hz commands instead of DC braking commands.
Set frequency
0
Output current [A]
0
and terminals ST-CC are closed (ON), the DC braking function is
.
Function
=
= ,
F-17
LED display
is set at (enabled) when the output frequency is below
during this control operation. This function
= , ).
Adjustment range
: Standard (DC braking)
: 0Hz command
~ Hz
~ sec.
.
cannot be used.
of the vector control mode with a sensor. In order to use this
or
(jog run stop pattern) is set to
E6581301
is displayed.
is displayed.
Time [s]
2
ON
OFF
ON
OFF
Default setting
= ,
)
, or command from external
(emergency stop pattern) is set
6
,