Hitachi hitachi series inverter 사용자 설명서
37
Frequency Arrival Signals
The Frequency Arrival group of outputs helps coordinate external systems with the current
velocity profile of the inverter. As the name implies, output [FA1] turns ON when the output
frequency arrives at the standard set frequency (parameter F001). Output [FA2] relies on
programmable accel/ decel thresholds for increased flexibility. For example, you can have
an output turn ON at one frequency during acceleration, and have it turn OFF at a different
frequency during deceleration. All transitions have hysteresis to avoid output chatter if the
output frequency is near one of the thresholds.
velocity profile of the inverter. As the name implies, output [FA1] turns ON when the output
frequency arrives at the standard set frequency (parameter F001). Output [FA2] relies on
programmable accel/ decel thresholds for increased flexibility. For example, you can have
an output turn ON at one frequency during acceleration, and have it turn OFF at a different
frequency during deceleration. All transitions have hysteresis to avoid output chatter if the
output frequency is near one of the thresholds.
Option
Code
Terminal
Symbol
Function Name
State
Description
ON when output to motor is at the constant frequency
01
FA1 Frequency
Arrival
Type 1 – Constant
Speed
Speed
OFF when output to motor is OFF, or in any acceleration or
deceleration ramp
ON when output to motor is at or above the set frequency
thresholds for, even if in acceleration or decel ramps
02
FA2 Frequency
Arrival
Type 2 – Over
frequency
frequency
OFF when output to motor is OFF, or during accel or decel
before the respective thresholds are crossed
ON when output to motor is at the set frequency
06
FA3 Frequency
Arrival
Type 3 – Set
frequency
frequency
OFF when output to motor is OFF, or in any acceleration or
deceleration ramp
ON when output to motor is at or above the set frequency
thresholds for, even if in acceleration or decel ramps
24
FA4 Frequency
Arrival
Type 4 – Over
frequency (2)
frequency (2)
OFF when output to motor is OFF, or during accel or decel
before the respective thresholds are crossed
ON when output to motor is at the set frequency
25
FA5 Frequency
Arrival
Type 5 – Set
frequency (2)
frequency (2)
OFF when output to motor is OFF, or in any acceleration or
deceleration ramp
Valid for inputs:
11, 12, AL0 – AL2
Required
settings
settings
C042
,
C043
,
C045
,
C046
,
Notes:
• For most applications you will need to use only
• For most applications you will need to use only
one type of frequency arrival outputs (see
examples). However, it is possible assign both
output terminals to output functions [FA1] and
[FA2]
examples). However, it is possible assign both
output terminals to output functions [FA1] and
[FA2]
• For each frequency arrival threshold, the output
anticipates the threshold (turns ON early) by
1.5Hz
1.5Hz
• The output turns OFF as the output frequency
moves away from the threshold, delayed by
0.5Hz
0.5Hz
• The example circuit for terminal [11] drives a
relay coil. Note the use of a diode to prevent the
negative going turn-off spike generated by the
coil from damaging the inverter’s output
transistor
negative going turn-off spike generated by the
coil from damaging the inverter’s output
transistor
Example for terminal [11] (default output configuration
shown see page 66):
shown see page 66):
Example for terminal [AL0], [AL1], [AL2] (requires
output configuration see
output configuration see
page 66
):
See I/O specs on
page 21,22.
RY
Inverter output
terminal circuit
terminal circuit
CM2
11
FA1
AL1
Power
supply
Load
AL0
AL2
Inverter logic
circuit board
circuit board
FA1