Hitachi X200 Series instruction manual 38, Frequency Arrival Signals

4−38

Frequency Arrival Signals

Operations and Monitoring

The Frequency Arrival group of outputs help 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	State		Description
Code	Symbol
01	FA1	Frequency Arrival	ON	when output to motor is at the set frequency
		Type 1 – Constant	OFF	when output to motor is OFF, or in any
		Speed		acceleration or deceleration ramp
02	FA2	Frequency Arrival	ON	when output to motor is at or above the set
		Type 2 – Over		frequency thresholds for, even if in acceleration or
		frequency		deceleration ramps
			OFF	when output to motor is OFF, or during
				acceleration or deceleration before the respective
				thresholds are crossed
Valid for inputs:		11, AL0 – AL2		Example for terminal [11] (default output
Required settings		(none)		configuration shown – see page 3-54):
Notes:				Inverter output
• For most applications you will need to use only
				terminal circuit		FA1
one type of frequency arrival outputs (see
examples). However, it is possible assign both
output terminals to output functions [FA1] and
[FA2].
					CM2	11

•For each frequency arrival threshold, the output anticipates the threshold (turns ON early) by 1.5Hz.

• The output turns OFF as the output frequency				RY
moves away from the threshold, delayed by
0.5Hz.	Example for terminal [AL0], [AL1], [AL2] (requires
• The delay time of the output signal is 60 ms
	output configuration – see page 54):
(nominal).
• The example circuit for terminal [11] drives a	Inverter logic			FA1
relay coil. Note the use of a diode to prevent the	circuit board
negative going turn-off spike generated by the
coil from damaging the inverter’s output
transistor.
			AL0	AL1	AL2
		Power
					Load
		supply

See I/O specs on page 4-6