Using Intelligent Output Terminals
Oper
ations
a
nd Moni
tor
ing
4–44
Run Signal
When the [RUN] signal is selected as an
intelligent output terminal, the inverter
outputs a signal on that terminal when it is
in Run Mode. The output logic is active
low, and is the open collector type (switch
to common).
The timing diagram to the right shows the
Run Signal operation in detail. The inverter
outputs the [RUN] signal whenever the
inverter output exceeds the start frequency
specified by parameter B082
.
The start
frequency is the initial inverter output frequency when it turns ON.
NOTE:
If you use an intelligent output to drive an external relay, be sure to connect a diode
across the relay coil. This will prevent the negative-going turn-off spike generated by the coil
from damaging the inverter’s output transistor.
Frequency Arrival
Signals
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). Outputs [FA2] through [FA5]
provide variations on this function for increased flexibility, relying on two programmable accel/
decel thresholds. For example, you can have an output turn ON at one frequency during accel-
eration, 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.
Note the following:
• For most applications you will need to use only one or two of the frequency arrival type
outputs (see example). However, it is possible to assign all five output terminals to output
functions [FA1] through [FA5].
• For each frequency arrival threshold, the output anticipates the threshold (turns ON early) by
an amount equal to 1% of the maximum frequency set for the inverter.
• The output turns OFF as the output frequency moves away from the threshold, delayed by an
amount equal to 2% of the max. frequency.
Opt. Code
00
Symbol
[RUN]
Valid for
Outputs
[11 to [15],
[ALx]
Required
Settings
(none)
Default
terminal
[12]
[FW, RV]
Motor
speed
Run
Signal
start freq.
B82
ON
t
Opt. Code
and
Symbol
01=[FA1]
02=[FA2]
06=[FA3]
24=[FA4]
25=[FA5]
Valid for
Outputs
[11 to [15],
[ALx]
Required
Settings
F001 for FA1
C042 and
C043 for
FA2 and FA3
C045 and
C046 for
FA4 and FA5
Default
terminal
[11]=[FA1]
Other
terminals
Requires
config.
Symbol
Function Name
Description
FA1
Frequency arrival type 1 –
constant speed
ON when output to motor is at the standard set
frequency F001
FA2
Frequency arrival type 2 –
over-frequency
ON when output to motor is at or above the FA
threshold 1 (C042) during accel
FA3
Frequency arrival type 3 –
at frequency
ON when output to motor is at the FA threshold 1
(C042) during accel, or at C043 during decel
FA4
Frequency arrival type 4 –
over-frequency (2)
ON when output to motor is at or above the FA
threshold 2 (C045) during accel
FA5
Frequency arrival type 5 –
at frequency (2)
ON when output to motor is at the FA threshold 2
(C045) during accel, or at C046 during decel
