Mitsubishi HD-5000A Instruction Manual download pdf (Page 124)

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4. OPERATION

4.4.3 Count type home position return

In count type home position return, a motion is made over the distance set in parameter No.43 (moving

distance after proximity dog) after detection of the proximity dog front end. The position where the first Z-

phase signal is given after that is defined as a home position. Hence, if the proximity dog (DOG) is 10ms

or longer, there is no restriction on the dog length. This home position return method is used when the

required proximity dog length cannot be reserved to use dog type home position return or when the

proximity dog (DOG) is entered electrically from a controller or the like.

(1) Signals, parameters

Set the input signals and parameters as follows.

Item Device/Parameter used Description

Manual home position return

mode selection

Automatic/manual selection (MD0) MD0 is switched on.

Count type home position return Parameter No.8

1 : Count type home position return

is selected.

Home position return direction Parameter No.8

Refer to section 4.4.1 (2) and choose home

position return direction.

Dog input polarity Parameter No.8

Refer to section 4.4.1 (2) and choose dog

input polarity.

Home position return speed Parameter No.9 Set speed until detection of dog.

Creep speed Parameter No.10 Set speed after detection of dog.

Home position shift distance Parameter No.11

Set when shifting the home position,

starting at the first Z-phase signal given

after passage of the proximity dog front end

and movement over the moving distance.

Moving distance after proximity

dog

Parameter No.43

Set the moving distance after passage of

proximity dog front end.

Home position return

acceleration/deceleration time

constants

Parameter No.41

Use the acceleration/deceleration time

constants set in parameter No. 41.

Home position return position

data

Parameter No.42

Used to set the current position on

completion of home position return.

Program

Select the program including the "ZRT"

command that executes a home position

return.

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Mitsubishi HD-5000A Instruction Manual Page 124

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