Emergency Stop; Overload Reduction Start-Up Frequency; Motor's 150%-Overload Time Limit - Toshiba TOSVERT VF-A7 Instruction Manual

6.25.4 Emergency stop



Function
Emergency stop mode of can be selected. At emergency stop, a trip message ("") is displayed.
Note) When setting  at  or (Emergency DC injection braking stop), you need to set also the
parameters (DC injection braking current) and (Emergency DC injection braking
control time).
1) Emergency stop by terminal operation
Emergency stop can be performed with the a or b-contact. Assign the emergency stop function
to a terminal as described below, and select a stop mode.
Input
CC
[Parameter setting]
Title
Emergency stop

Emergency DC injection braking

control time
DC injection braking current

(Example of assignment) Assigning the emergency stop function to the terminal S4
Title
Input terminal selection #8 (S4)

Note 1) An emergency stop can be carried out from the terminal even in panel operation mode. In this case,
however, holding down the Stop key for more than 5 seconds causes the inverter trip ()
even when  is set at ,  or .
Note 2) If DC injection braking is not needed for normal stops, though  is set at  or  (emergency
DC injection braking), then set the DC braking time  at   [s].
2) Emergency stop by panel operation
Emergency stop can be performed with the control panel, in other operation command mode.
Press twice the STOP key on the control panel.
Press the STOP key
Press the STOP key again

6.25.5 Overload reduction start-up frequency


Refer to 5.13 for details.

6.25.6 Motor's 150%-overload time limit


Refer to 5.13 for details.
Emergency stop
Emergency DC injection braking control time
a-contact
Function
Function
Then, " " is displayed, and also a fault detection signal (FL) is put out at

=,  or , while the FL is not active if

Overload reduction start-up frequency
Motor 150%-overload time limit
F-58
Input
CC
Adjustment range
: Coast stop
: Deceleration stop
: Emergency DC injection braking stop
: Coast stop without FL output
: Deceleration stop without FL output
: Emergency DC injection braking
without FL output
  [s]
  [%]
Adjustment range
 

starts blinking.
Emergency stop
b-contact
Default setting



Setting value
(emergency stop)
is set at 3, 4 or 5.
