NSK Megatorque PS Series User Manual

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7.2.8.1. Resolution of Position Feedback Signal
Table 7-28:Resolution of position feedback signal
Category øA and øB (count/revolution)
øZ
(count/revolution)
Shipping set
• 81 920 (after quadrupled)
(20 480 each for øA and øB)
80
Range
• 1 to 5 242 880 (after quadrupled)
(1 to 1 310 720 each for øA and øB)
80
Restrictions
• The frequency of quadrupled position feedback signal is
3 125 000 [count/revolution]
(The maximum output frequency of øA and øB is 781 kHz.)
• For example, the maximum rotational speed of the Motor for the resolution of
5 242 880 [count/revolution] must be less or equal to the following.
• Maximum rotational speed: = 781 000/1 310 720 = 0.6 [s
-1
]]
(There is another restriction on the specified maximum speed of each Motor
type.)
–
 Specify the total number of edge count of øA and øB pulse for one Motor revolution by the
parameter FR (Feedback signal resolution). The signal phase relation between øA and øB can be
specified by the parameter FD (Feedback signal leading phase)
The Driver Unit will process internal residual pulses caused by the setting of free circular
resolution.
(The basic position for the computation of free resolution setting is the home position.)
◊ For an example, let’s set the Motor resolution to 360 000 edge count for one revolution.
(Phase A and B outputs 90 000 [count/revolution] respectively.)
:
/
NSK ON
NSK ON
:
FR360000
VL8.681;_
3
<
R F 6
&
0
?
0
?
ENT
0
?
0
?
KN S /
SP
N
ENT
O

NSK Megatorque PS Series Specifications

General

Brand	NSK
Model	Megatorque PS Series
Category	Engine
Language	English