2.3 Overview of Function Code
C
hap.
2
FUN
CT
IO
N
C
O
D
E
S
E30
Speed Arrival (Hysteresis)
H75 (Speed Agreement, Delay time)
E30 specifies the detection range of the speed arrival signal.
- Data setting range: 0.00 to 6000 (r/min)
Data setting range changes depending on the number of poles of motor etc. For details, refer to
section 2.2.
■
Output signals "Speed arrival
FAR
", "Speed arrival 3
FAR3
", "During acceleration
DACC
" and "During deceleration
DDEC
"
The output signal
FAR
can be assigned to a general-purpose, programmable output terminal by
setting "1" (E20 to E24 and E27). The
FAR
comes ON when the detected speed against the reference
speed (pre-ramp) is within the specified range. However, if the run command is OFF or the reference
speed (pre-ramp) is less than 0.00 (r/min) (less than the stop speed), it will not come ON.
The output signal
FAR3
can be also assigned by setting "72." The
FAR3
comes ON when the
detected speed against the reference speed (pre-ramp) is within the specified range. This output
signal is not affected by any run command.
The output signals
DACC
and
DDEC
can be also assigned by setting "73" and "74," respectively.
The
DACC
or
DDEC
comes ON depending on whether the motor is accelerating or decelerating by
comparing the reference speed (pre-ramp) with the detected speed. These output signals during
accelerating and decelerating are turned OFF according to the level of the speed arrival hysteresis
specified by E30.
When the output signals
FAR
,
DACC
and
DDEC
are assigned, the ON-to-OFF delay
time can be specified by function code H75 in order to prevent chattering. H75 can be
used for the output signal
DSAG
.
When the torque vector control is selected reference speed (final) is used instead of
detected speed.
Following is a timing chart for these output signals.
E30
E30
E30
E30
E30
E30
E30
E30
FWD
FAR
FAR3
DACC
DDEC
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
H75
H75
H75
H75
H75
H75
Speed
Detected
speed
Refference speed
(pre-ramp)
2-69
Содержание Frenic lift
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