NSK EDD Megatorque Motor - Position Feedback Signal

7. Operational Function
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7.2.8. Position Feedback Signal
 The position feedback signal monitors the rotational amount of the Motor in øA/øB format and the Motor
reference position by the øZ pulse.
 The signal can be used for controlling the position scale in the master controller.
 The total edge count number of øA and øB pulses for a one revolution of the Motor can be freely divided
by the parameter FR (Feedback signal resolution).
The number of the øZ pulses for one revolution of the Motor is 80 pulses.
 The parameter FZ (Feedback phase Z configuration) specifies the signal configuration of phase
Z.
Fig 7-19: Position feedback signal
ø A/øB
generation
øZ
generation
CN2: CHA
CN2: CHB
CN2: CHZ
Parameter FZ
2 621 440
80
Offset of home
position
Parameter FD
Monitor FK
2 621 440
Parameter FR
Position scale
based on the user
home position*
Position scale
based on the Motor
home position
*
Refer to “6.2.3. Setting Home Position” for the user
home position ans the Motor home position.
Table 7-27: Input/Output and parameters related to the position feedback signal.
Category
Name (code)
Function
Initial
setting
Range/Description
Unit
Control output
CHA
Position feedback signal øA
–
 The pulse signal that indicates number of Motor
rotation.
 The signal format is the line driver format. .
 Number of outputting pulses of øA and øB in one
revolution can be freely divided.
CHA
Position feedback signal øA
–
CHB
Position feedback signal øB
–
CHB
Position feedback signal øB
–
CHZ
Position feedback signal øZ
–
CHZ
Position feedback signal øZ
–
Parameter
FD
Specifies the leading phase of
feedback signal.
0
0: The leading phase is øA in the CW.
1: The leading phase is øB in the CW.
–
FZ
Specifies configuration of øZ.
0
0: øZ configuration
1: MSB configuration
–
FR
Feedback signal resolution
81 920
0: Prohibit to output øA/øB.
1 to 5 242 880
count/rev.
VL

Pulse generating speed limiter.
10.000
0.001 to 10.000
s
-1
Monitor
FK
Reads out the total edge count
number of øA and øB.
0
-2 147 483 648 to 2 147 483 647
count
★: Requires the password.

: Automatically set by the parameter FR.