9 Operation
9.2.3 Setup Procedure Using Linear Servomotors without Hall Sensors
9-16
(b) Checking the Concurrence between the Linear Scale Count Direction and the Linear Ser-
vomotor Forward Direction
Next, move the coil assembly by hand in the direction of the side with the cable, and check that the Un00D
monitor is counting up.
When the Value of the Un00D is counted down
When the value of the Un00D is a counted down, set the parameter Pn080.1 = 1 (B-phase progression, U, V, W-phase in
order). Enable the setting by setting validation.
With this setting, the SERVOPACK performs current control by treating the linear scale countup direction as the motor
forward direction.
(c) Related Parameters
(8) Assigning Polarity Detection Start Input (/P-DET)
When using a linear servomotor without a hall sensor, polarity detection must be performed after turning ON the
power. When the input signal assignment mode is set to the factory setting (Pn50A.0=0), polarity detection starts
at the same time as the Servo ON (/S-ON) signal, and when the polarity detection is completed, the Servo Ready
(/S-RDY) signal turns ON.
To incorporate a sequence at the host controller that monitors the Servo Ready signal and outputs servo ON sig-
nals or to perform polarity detection using different timing from the servo ON signal, the polarity detection start
signal (/P-DET) must be assigned to a user-set input.
After setting the parameter Pn50A.0 to 1 (the input signal assignments can be changed for each signal), set
Pn50D.3 (/P-DET signal mapping) and assign the /P-DET signal to any input terminal. The setting validation is
required to enable the settings.
When the linear servomotor is moved by hand to the side with the cable,
if the value of Un00D is a countup value, confirmation is completed.
Linear servomotor cable
attached to coil assembly
INFO
Parameter
Description
Pn080
n.
0
Phase-A progression, phase-U, V, W order (factory setting)
n.
1
Phase-B progression, phase-U, V, W order
Type
Name
Connector Pin
Number
Setting
Meaning
Input
/S-ON
CN1-40
ON (low level)
Turning the servo ON and the polarity detection function
ON (enabled).
OFF (high level)
Turning the servo ON and the polarity detection function
OFF (disabled).
/P-DET
Must be allocated
ON (low level)
Turning the polarity detection function ON (enabled).
OFF (high level)
Turning the polarity detection function OFF (disabled).
This input signal is used to start polarity detection.
Either the /S-ON or /P-DET signal can be used to start polarity detection.
When the /P-DET signal is used, input signal must be allocated. For details on assignment methods, refer to
8.3.2 Input Cir-
cuit Signal Allocation
.
Summary of Contents for SGLFW
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