Synchronous Tap Specifications (Option); Closed Method Synchronous Tap; Semi-Closed Method Synchronous Tap; Synchronous Tap Operation - Mitsubishi Electric MDS-B-SPJ2 Series Specification Manual

7.2 Synchronous tap specifications (option)

The two types of synchronous taps are as follows:

1. Closed method synchronous tap

2. Semi-closed method synchronous tap

7.2.1 Closed method synchronous tap
In this method, the position loop is configured by the position signal of the encoder installed on the
spindle.
(1) Connection
Refer to page "1.5 Configuration" for information on connecting the encoder and spindle drive
unit.
(2) Encoder installation
Refer to the page on encoder orientation for information.
7.2.2 Semi-closed method synchronous tap
In this method, the position loop is configured by the position signal of the motor built-in encoder.
Thus, a special detector for synchronous tapping is not required.
Note that this only applies when the connection between the spindle and motor uses gears or is a
direct connection.
(Closed method synchronous tapping is possible if the connection is with a belt or timing belt.)
This method is also possible for standard motors without a Z phase signal.
(1) Connection
There are no connections to be added for the synchronous tap function.

7.2.3 Synchronous tap operation

When the synchronous tap operation is entered, one of the following types of operations can be
selected with the parameter.
(1) Synchronous tap operation after the zero point return (0 is designated in parameter SPECT-bit E)
(2) Synchronous tap operation after the deceleration stop (1 is designated in parameter SPECT-bit
E)
The possibility of the operations above is restricted in the following manner.
..... Possible
Synchronous tap after zero point
return
Synchronous tap after
deceleration stop
7. Optional Specifications and Parts
× ..... Impossible
No
orientation
×
Encoder
orientation
7 − 7
Motor built-in
encoder orientation