Hitachi WL200 Series - Frequency Arrival Signals

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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
Code
Terminal
Symbol
Function Name
State
Description

FA1
Frequency Arrival
Type 1 – Constant
Speed
ON
when output to motor is at the constant frequency
OFF
when output to motor is OFF, or in any acceleration or
deceleration ramp

FA2
Frequency Arrival
Type 2 – Over
frequency
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

FA3
Frequency Arrival
Type 3 – Set
frequency
ON
when output to motor is at the set frequency
OFF
when output to motor is OFF, or in any acceleration or
deceleration ramp

FA4
Frequency Arrival
Type 4 – Over
frequency (2)
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

FA5
Frequency Arrival
Type 5 – Set
frequency (2)
ON
when output to motor is at the set frequency
OFF
when output to motor is OFF, or in any acceleration or
deceleration ramp
Valid for inputs:
11, 12, AL0 – AL2
Example for terminal [11] (default output configuration
shown see page 66):
Example for terminal [AL0], [AL1], [AL2] (requires
output configuration see page 66):
See I/O specs on page 23, 24.
Required
settings
, , , ,
Notes:
 For most applications you will need to use only
one type of frequency arrival outputs (see
examples). However, it is possible to assign both
output terminals to output functions [FA1] and
[FA2]
 For each frequency arrival threshold, the output
anticipates the threshold (turns ON early) by
1.0% of maximum frequency
 The output turns OFF as the output frequency
moves away from the threshold, delayed by
2.0% of maximum frequency
 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
RY
Inverter output
terminal circuit
CM2
11
FA1
AL1
Power
supply
Load
AL0
AL2
Inverter logic
circuit board
FA1