12.2 Origin Returns
12.2.1 Origin Return Type
12-3
12.2
Origin Returns
An origin return must be performed after the power supply is turned ON to align the position of
the Servomotor with the position of the machine. An origin return, however, is not required if an
absolute encoder is used.
12.2.1
Origin Return Type
The SERVOPACK supports the following three types of origin returns.
Refer to the following section for details on origin returns.
13.3.3 Origin Returns on page 13-15
12.2.2
Parameter Settings
Connecting the Origin Signal Input
To use an origin return, wire the SERVOPACK CN1 connector pin that corresponds to the
switch for the origin signal input shown in the following table.
Enabling/Disabling the Origin Signal Input
You can disable the origin signal input by changing the settings of a parameter in the SERVO-
PACK. If the input is disabled, wiring the origin signal input is not required.
Setting the Origin Signal Input Polarity
This parameter sets the polarity of the origin signal input that will be active.
Origin Return Type Function
Typ e 0
An origin return is based on the Home Flag and the detection of phase C of the
encoder.
Typ e 1
An origin return is based only on the Home Flag.
The axis travels at the origin approach speed in the specified origin return direc-
tion.
Typ e 3 An origin return is based only on the detection of phase C of the encoder.
Typ e Signal Name Connector Pin Meaning
Input /HOME CN1-11 Origin Signal Input
Parameter Meaning
PnBA4
b.
0 The origin signal input is disabled.
b. 1
The origin signal input (HOME) is input from CN1-11.
(Default setting)
Parameter Meaning
PnBA3
b.
0
The origin signal input is active while the external switch is
open.
(Default setting)
With this setting, the position where the external switch
changes from closed to open will be the origin.
b.
1
The origin signal input is active while the external switch is
closed.
With this setting, the position where the external switch
changes from open to closed will be the origin.
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