4-196
20- 30
PG gear ratio 1
Range
【1~1000】
20- 31
PG gear ratio 2
Range
【1~1000】
■PG card is required (PG-X3/PG-B3/PG-IPM)
PG pulse divider ratio can be set by 20-29.
■PG feedback setting
(1) Over speed operation setting (20-19 to 20-21).
. When the motor operation exceeds the tuning limit, an error is detected.
. If the motor speed feedback exceeds the set value of 20-20 (over-speed detection
level) and set time of (over speed detection delay time), a failure detection of
overspeed (OS) will be detected.
. For over-speed (operating system) detection, the stop of the inverter is set by
20-19.
. For the block figure of PG feedback failure detection referring to the following figure
4.3.117.
(2) PG speed deviation setting (20-22 to 20-24).
. When the speed deviation (namely the difference between the set speed and the
actual motor speed) exceeds the tuning limit, an error will be detected.
. If the speed deviation is greater than the set value of 20-23 (deviation detection
level) or greater than time of 20-24 (deviation detection delay time), then the
speed deviation (DEV) failure detection will be enabled (namely the output
frequency is the reference frequency ± the agreed width of frequency detection,
20-22).
. If the speed deviation is detected, the inverter will stop according to the set of
20-22.
. For the block figure of PG feedback failure detection referring to the below figure
4.3.117.
(3) PG detection setting (20-25 to 20-26).
. If the PG (PGO) breaking-off failure is detected to exceed the set time of 20-26
(PG open circuit detection time).
. The inverter will stop according to the set of 20-25
. For the block figure of PG feedback failure detection, referring to the following
figure 4.3.117,
Figure 4.3.117 The block figure of PG feedback failure detection
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