UPD168113 datasheet(38/50 Pages) NEC

38 / 50 page

Data Sheet S16423EJ2V0DS

µ PD168113

11.7.10 Example of acceleration/deceleration operation

(1) Acceleration valid/deceleration valid

Set pulses

Acceleration/

deceleration pulses

(2) Acceleration valid/deceleration invalid

(3) Acceleration invalid/deceleration invalid

(4) Acceleration invalid/deceleration valid

(1’) Acceleration valid/deceleration valid Note1

Set pulses

Condition: Set pulses/2 < acceleration/deceleration pulses

(2’) Acceleration valid/deceleration invalid Note2

Condition: Set pulses < acceleration/deceleration pulses

(4’) Acceleration invalid/deceleration valid Note3

Condition: Set pulses < acceleration/deceleration pulses

The left side figures in upper figures show the ideal operation waveform. If the number of set pulses is less than the

number of acceleration/deceleration control pulses, the operation as the right side figures in upper figures.

Notes 1. The deceleration operation is stared when 1/2 of the set number of pulses has been reached during the

acceleration operation. Therefore, acceleration and deceleration are always mirrored.

2. If the set number of pulses is less than the number of acceleration/deceleration control pulses during only

the acceleration operation, the operation is stopped at the pulse rate in the middle of acceleration.

3. If the set number of pulses is less than the number of acceleration/deceleration control pulses during only

the deceleration operation, the last pulse rate does not reach the target value. The set number of pulses is

output in accordance with the deceleration pulse curve, and the operation is stopped.

UPD168113 Datasheet(PDF) 38 Page - NEC