89

 

10

bit = 1040

rps

 

 

12

bit =

260

rps

 

 

14

bit =

65

rps

 

 

16

bit =

16.5rps

 

 

 

 

 

 

 

 

 

 

 

Resolution

DS13

DS14

 

 

 

10

ON

ON

 

 

 

12

ON

OFF

 

 

 

14

OFF

ON

 

 

 

16

OFF

OFF

 

 

 

 

 

 

Note:

-Each resolution change must be followed by new components selection procedure.

-When changing resolution under dynamic conditions, a period of uncertainty will exist before position and velocity data is valid.

Encoder resolution

In the STD mode (DS12 OFF), the encoder signals A,B are created by the EPLD and can have only the following basic resolutions (for 2 pole Resolver):

256 for 10 bits

1024 for 12 bits

4096 for 14 and 16 bits

When the Resolver is more than 2 poles, the resolution for one shaft rotation will be:

Er = QxS / 8

Q = number of Resolver poles ;

S = resolution of converter (2 10,212,or 214)

When different encoder resolution is needed the encoder signals are generated by the EPROM and the R/D resolution is no longer user selectable. This option requires

-DS12 at ON

-Special EPROM which is programmed for this resolution.

DBP - Rev 6/93

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Image 90
Elmo DBP SERIES manual Off