E6581381

6.17.4 Emergency stop

H: Emergency stop

H : Emergency DC braking time

Function

These parameters allow you to specify how to stop operation using an external control device when an external trip occurs. When operation is stopped, the trip G and the FL relay also are activated. When setting H to  (emergency DC braking), set also H (DC braking rate) and H (emergency braking time)

1)External trip stop via terminals

The external trip stop function can be executed via the a-contact. Proceed as follows to assign an external stopping terminal and select the stopping method:

[Parameter setting]

 

 

 

 

 

Title

Function

Adjustment range

 

Default setting

 

 

 

 

0: Coast stop

 

 

 

6

H

Emergency stop selection

1: Slowdown stop

 

0

 

 

 

2: Emergency DC braking

 

 

 

 

 

 

 

 

 

 

H

Emergency DC braking time

0.0 ~ 20.0 [sec]

 

1.0

 

 

H

DC braking current

0-100 (%)

 

50

 

 

(Example of terminal assignment): Assigning the trip stop function to the RES terminal

 

 

 

 

Title

Function

Adjustment range

 

Setting value

 

 

H

Input terminal selection 3 (RES)

0-71

11 (External trip

 

 

 

stop)

 

 

 

 

 

 

 

 

Note 1: Emergency stopping via the specified terminal is possible, even during panel operation.

Note 2: If DC braking is not needed to bring the motor to a stop under normal conditions, although H is set to 2 (emergency DC braking), set the DC braking starting frequency (H) at 0.0 Hz.

2) Emergency stopping from the operation panel

Emergency stopping from the operation panel is possible

by pressing the STOP key on the panel twice while the inverter is not in the panel control mode.

(1)

Press the

STOP key

"GQHH" will blink.

(2)

Press the

STOP key once again

Operation will come to a trip stop in accordance with the setting

 

 

 

of the H parameter.

After this, "G" will be displayed and a failure detection signal generated (FL relay deactivated).

F-57

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Image 153
Toshiba VF-FS1 instruction manual  Emergency stop  Emergency DC braking time, External trip stop via terminals