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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
Terminal
Code
Symbol
FA1
01
FA2
02
FA3
06
FA4
24
FA5
25
Valid for inputs:
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
Function Name
Frequency Arrival
Type 1 – Constant
Speed
Frequency Arrival
Type 2 – Over
frequency
Frequency Arrival
Type 3 – Set
frequency
Frequency Arrival
Type 4 – Over
frequency (2)
Frequency Arrival
Type 5 – Set
frequency (2)
11, 12, AL0 – AL2
C042, C043, C045, C046,
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 59):
Inverter output
terminal circuit
Example for terminal [AL0], [AL1], [AL2] (requires
output configuration see
Inverter logic
circuit board
See I/O specs on
31
Description
FA1
CM2
11
RY
page
59):
FA1
AL0
AL1
AL2
Power
Load
supply
page 16,17.
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