225
Special operation and frequency control
4
PA
R
A
M
E
T
E
R
S
(7) PID output suspension function (SLEEP function) (SLEEP signal,
Pr. 554
,
Pr. 575 to Pr. 577
)
The inverter stops operation if the output frequency after PID control remains at less than the
Pr. 576 Output
interruption detection level
setting for longer than the time set in
Pr. 575 Output interruption detection time
. (At this time,
if "0 to 3" is set to
Pr.554 PID signal operation selection
, output is shut off (the inverter coasts to stop) when SLEEP
operation starts. If "10 to 13" is set, the inverter decelerates to a stop in the deceleration time set in
Pr.8
when
SLEEP operation starts.)
This function can reduce energy consumption in the low-efficiency, low-speed range.
When the deviation (= set value - measured value) reaches the PID output shutoff cancel level (
Pr. 577
setting -
1000%) while the PID output interruption function is on, the PID output interruption function is canceled and PID
control operation is resumed automatically.
While the PID output interruption function is on, the PID output interruption signal (SLEEP) is output. At this time,
the inverter running signal (RUN) is off and the PID control operating signal (PID) is on.
For the terminal used for the SLEEP signal output, assign the function by setting "70" (positive logic) or "170"
(negative logic) in
Pr. 190 to Pr. 196 (output terminal function selection)
.
*
When the output rises to the output interruption cancel level during deceleration to a stop, output interruption gets cancelled, and the inverter
accelerates again to continue PID control.
Pr.576 Output interruption detection level
is invalid during deceleration.
Pr.554 Setting
SLEEP Function
FUP Signal, FDN Signal
Y48 Signal
0 (Initial value)
Inverter coasts to a stop at the
start of SLEEP operation
Only signal output
Only signal output
1
Signal stop by fault (E.PID)
2
Only signal output
Signal stop by fault
(E.PID)
3
Signal stop by fault (E.PID)
10
Inverter decelerates to a stop at
the start of SLEEP operation
Only signal output
Only signal output
11
Signal stop by fault (E.PID)
12
Only signal output
Signal stop by fault
(E.PID)
13
Signal stop by fault (E.PID)
Output frequency
Deviation
Pr.576
Pr.577
- 1000%
RUN
Time
ON
OFF
SLEEP
Less than
Pr. 575
Pr. 575
or more SLEEP period
PID
Cancel
level
When
Pr.554
= "0 to 3", reverse action (
Pr.128
= "10")
Output frequency
Deviation
When
Pr.554
= "10 to 13", reverse action (
Pr.128
= "10")
Pr.576
Pr.577
- 1000%
RUN
Time
ON
OFF
SLEEP
Less than
Pr. 575
Pr. 575
or more
SLEEP period
PID
Cancel
level
Decelerates
to a stop*
Summary of Contents for F700
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