Parameter assignment
3.5 Function parameters
SIMOTION ADI4 - Analog Drive Interface for 4 Axes
44 Manual, 05/2009, 6FC5 297-0BA01-0BP6
3.5.1 Encoder type
Encoder type "not available"
An encoder type setting of "not available" for Encoder x means that Axis x does not exist, or
that it is not to be operated. User data transmitted for this axis in the PROFIBUS message
frame are empty.
Encoder type TTL
Encoder parameters:
● Resolution
Encoder resolution in encoder pulses per encoder revolution
Note
In the case of spindles with a low-resolution encoder, the actual-value characteristic
(incrementing) may be displayed in a non-linear fashion. The incrementing that is visible on
the actual-value display is the result of the speed resolution (RR), where:
• RR: 60000 / ( T
DP
* ER * PM )
• RR (speed resolution): [(revolutions/min) / encoder pulse]
• T
DP
(position control cycle clock = PROFIBUS cycle clock): [ms]
• ER (encoder resolution): [Encoder pulse / revolution]
• PM (pulse multiplication)
Example:
T
DP
(position control cycle clock = PROFIBUS cycle clock): 2 ms
ER (encoder resolution): 2500 pulses/revolution
PM (pulse multiplication): 4
RR = 60000 ( 2*2500*4) = 3 (revolutions/min) / encoder pulse
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