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
Function Name
State
Description
01 |
| FA1 | Frequency Arrival | ON | when output to motor is at the constant frequency | |||||||||
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| Type 1 – Constant | OFF | when output to motor is OFF, or in any acceleration or | ||||||||
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02 |
| FA2 | Frequency Arrival | ON | when output to motor is at or above the set frequency | |||||||||
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| Type 2 – Over |
| thresholds for, even if in acceleration or decel ramps | ||||||||
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| frequency | OFF | when output to motor is OFF, or during accel or decel | ||||||||
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06 |
| FA3 | Frequency Arrival | ON | when output to motor is at the set frequency | |||||||||
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| Type 3 – Set | OFF | when output to motor is OFF, or in any acceleration or | ||||||||
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24 |
| FA4 | Frequency Arrival | ON | when output to motor is at or above the set frequency | |||||||||
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| Type 4 – Over |
| thresholds for, even if in acceleration or decel ramps | ||||||||
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| frequency (2) | OFF | when output to motor is OFF, or during accel or decel | ||||||||
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| before the respective thresholds are crossed | ||||||||
25 |
| FA5 | Frequency Arrival | ON | when output to motor is at the set frequency | |||||||||
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| Type 5 – Set | OFF | when output to motor is OFF, or in any acceleration or | ||||||||
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| frequency (2) |
| deceleration ramp |
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| 11, 12, AL0 – AL2 |
| Example for terminal [11] (default output configuration | ||||||||
| Required |
| C042, C043, C045, C046, |
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| Notes: |
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| examples). However, it is possible assign both |
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| output terminals to output functions [FA1] and |
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| 11 |
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•For each frequency arrival threshold, the output
anticipates the threshold (turns ON early) by |
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1.5Hz |
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•The output turns OFF as the output frequency
moves away from the threshold, delayed by | Example for terminal [AL0], [AL1], [AL2] (requires |
0.5Hz | output configuration see page 66): |
• The example circuit for terminal [11] drives a | Inverter logic | FA1 | |
relay coil. Note the use of a diode to prevent the | |||
negative going | circuit board |
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coil from damaging the inverter’s output |
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transistor |
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| AL0 | AL1 | AL2 |
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Power |
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supply |
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See I/O specs on page 21,22.
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