Hitachi SJ Series User Manual page 197

Hide thumbs Also See for SJ Series:

Table of Contents

Limit operation command direction.

• Want to limit the operation command direction.

• Want to prevent damage of the machine due to the

inverter output in opposite direction.

• Output in the allowed rotation direction can be

obtained by setting the operation direction limit

selection [AA114] to limit the direction of the

• Set the operation direction limit selection if reverse

operation output could adversely affect connected

machines with no external force applied.

Operation direction limit

Even if this function works, you may have output

of reverse operation as a result of the control other

than V/f control. In this case, enable the reverse

operation prevention function.

See "12.6.3 Limiting output direction."

• Even if this function is used, the motor may rotate

in the reverse direction under an external force

applied in that direction. If you use this function to

limit the operation direction, use the function for a

system that does not receive an external force

applied in the reverse direction.

• The reverse rotation direction command due to a

negative value of the frequency is also restricted.

• Output stops when the direction is being limited.

Both forward and reverse

rotations enabled

Only forward rotation enabled

Only reverse rotation enabled

Inverter Functions

Chapters

Table of Contents