Function Of Issuing A 0Hz Command During A Halt - Toshiba VF-PS1 Instruction Manual

DC braking start frequency
Operation standby signal (S3-CC)
Note 1: If the motor shaft fixing control parameter  is set at  (enabled) when the output frequency is below
the DC braking start frequency  and terminals S3-CC are closed (ON), the DC braking function is
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
6
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  during this control operation. This function
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



Note 1: This function doesn't operate when =.
Note 2: If this function is set up, motor shaft fixing control  cannot be used.
Note 3: This function doesn't operate except = of the vector control mode with a sensor. In order to use this
function, the option board for PG feedback is required. Other than the vector control with a sensor =, the
usual DC braking operates.
Note 4: 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 5: 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  or , or command from external
control device). To the DC braking function which will be activated if  (jog run stop pattern) is set to 
(DC braking), and to the DC braking function which will be activated if  (emergency stop pattern) is set
to  (DC braking), but it issues 0Hz commands instead of DC braking commands.
Output frequency [Hz]
Set frequency

0
Output current [A]
0
Operation signal (F-CC)
Function
0Hz command output selection
DC braking starting frequency
DC braking time

Adjustment range
: Standard (DC braking)
: 0Hz command
~ Hz
~ sec.
F-16
E6581386
LED display
 is displayed.
 is displayed.
Time [s]

2
ON
OFF
ON
OFF
Default setting


