Hitachi WJ200 Series Quick Reference Manual page 38

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.
Option Terminal
Function Name
Code Symbol
01
FA1 Frequency Arrival
Type 1 – Constant
Speed
02
FA2 Frequency Arrival
Type 2 – Over
frequency
06
FA3 Frequency Arrival
Type 3 – Set
frequency
24
FA4 Frequency Arrival
Type 4 – Over
frequency (2)
25
FA5 Frequency Arrival
Type 5 – Set
frequency (2)
Valid for inputs: 11, 12, AL0 – AL2
C042, C043, C045, C046,
Required
settings
Notes:
•
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]
•
For each frequency arrival threshold, the
output anticipates the threshold (turns ON early)
by 1.5Hz
•
The output turns OFF as the output
frequency moves away from the threshold,
delayed by 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
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State
ON when output to motor is at the constant 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
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
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
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
OFF when output to motor is OFF, or in any acceleration or
deceleration ramp
Example for terminal [11] (default output configuration
shown – see page 3-54):
Inverter output
terminal circuit
Example for terminal [AL0], [AL1], [AL2] (requires
output configuration – see
Inverter logic
circuit board
AL0
Power
supply
See I/O specs on page 4-6
37
Description
FA1
CM2 11
RY
page 54):
FA1
AL1 AL2
Load