5-136
Chap. 5 FUNCTION CODES
F codes
E codes
C codes
P codes
H codes
A codes
b codes
r codes
J codes
d codes
U codes
y codes
When enabling the vector control with speed sensor, mount the sensor encoder on the motor output shaft
directly, or on a shaft with the rigidity equivalent to the motor output shaft. A backlash or deflection being on
the mounting shaft could interfere with normal control.
For using the Fuji VG motor exclusively designed for vector control, the sensor is mounted on the motor shaft
directly. Set both the pulse count factor 1 (d16) and pulse count factor 2 (d17) to "1."
d21, d22
d23
Speed Agreement/PG Error (Hysteresis width and Detection timer)
PG Error Processing
These function codes specify the detection levels of the speed agreement signal DSAG and PG error detected signal
PG-ERR.
Speed agreement signal DSAG (E20 to E24 and E27, data = 71)
Speed Agreement/PG Error (Hysteresis width) (d21) Data setting range: 0.0 to 50.0%,
100% at the maximum speed
(Detection timer) (d22) Data setting range: 0.00 to 10.00 (s)
If the speed regulator's deviation (between the reference speed and detected one) is within the specified range (d21), the
signal
DSAG turns ON. If the deviation is out of the specified range (d21) for the period specified by d22, the signal
turns OFF. This signal allows the user to check whether the speed regulator works properly or not.
PG error detected signal PG-ERR (E20 to E24 and E27, data = 76)
Speed Agreement/PG Error (Hysteresis width (d21) Data setting range: 0.0 to 50.0%,
100% at the maximum speed
(Detection timer) (d22) Data setting range: 0.00 to 10.00 (s)
PG Error Processing (d23) Data for d23 Function
0 Continue to run
1 Stop running with alarm 1 (
ere
)
2 Stop running with alarm 2 (
ere
)
If the deviation (between the reference speed and detected one) is out of the specified range (d21) for the period
specified by d22, the inverter judges it as a PG error.
Data setting for d23, however, defines the detection conditions and the error processing after the error detection.
Data for d23 Detection condition Processing after error detection
0 The inverter outputs the PG error
detected signal
PG-ERR and continues to
run.
1
When the inverter cannot follow the speed
command (even after the soft-starting) due to a
heavy overload or the like, and the detected speed
is slow against the reference speed, the inverter
does not interpret this situation as a PG error.
2 The inverter interprets the situation above as a PG
error.
The inverter enters the coast-to-stop state
outputting the
ere
alarm, and also
outputs the PG error detected signal
PG-ERR.
Enabling an operation limiting function such as the torque limit and droop control will increase the deviation
caused by a huge gap between the reference speed and actual one. In this case, the inverter may trip
interpreting this situation as a PG error, depending on the running status. To avoid this incident, set the d23
data to "0: Continue to run" to prevent the inverter from tripping even if any of those limiting functions is
activated.
d24 Zero Speed Control (Refer to F23.)
d25 ASR Switching Time (Refer to A42.)
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