Omron CS1W-MC221 - 02-2008 Operation Manual page 40

Control System Configuration and Principles
3. When the speed control voltage is received by the servo driver, it rotates
the motor at a speed corresponding to the speed control voltage. The ro-
tational speed is in proportion to the speed control voltage.
Servo Driver Speed Characteristics
Rotational speed +N (r/min)
4. The rotary encoder directly connected to the motor axis rotates in sync
with the motor and generates feedback pulses.
5. The error counter is reduced by the feedback pulses until the error counter
goes to zero. When the error counter goes to zero, the speed control volt-
age to the servo driver becomes zero and the motor stops rotating.
Target position value
(pulses)
Error counter count
(pulses)
Speed control voltage
Section 1-4
Speed control voltage
Time
Time
Time
Positioning end
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