Yaskawa Sigma II Series Servo System - Manual (Page 220)

Sigma II User’s Manual Chapter 5: Parameter Settings and Functions
5-134
For settings higher than 16384 P/R, pulses must be set in the following increments.
The setting error alarm A.09 (dividing ratio setting error) will occur if the setting is out-
side the allowable range or does not satisfy the setting conditions. The overspeed alarm
A.51 will occur if the motor speed exceeds the upper limit.
When setting the pulse dividing ratio using a digital operator or panel operator, the display
of the number of pulses increments as shown in the above table and the upper limit will
not increment above the resolution of mounted encoder.
When Pn212 is set without connecting a servomotor to the servo amplifier, the upper limit
is automatically set to 2
30
(=1073741824: the maximum output value of the sero ampli-
fier) since the encoder resolution of the servomotor is unknown.
Therefore, it is recommended to set Pn212 after connecting a servomotor.
Encoder Resolution
(Bits)
Number of Encoder
Pulses per Revolution
(P/R)
Setting Range
(P/R)
13 2048 16 to 2048
Pn212 needs not be
used.
16 16384 16 to 16384
17 32768 16 to 32768
20 262144 16 to 262144
PG Dividing Pulse
Setting (P/R)
Increments
(P/R)
Motor Speed Upper Limit
(rpm)
16 to 16384
1-pulse
No limit (up to the motor maximum
speed)
16386 to 32768 2-pulse
82×10 6 /Set value
32772 to 65536 4-pulse
65544 to 131072 8-pulse
131088 to 262144 16-pulse