205
Special operation and speed control
4
PARAMETERS
(7) PID output suspension function (SLEEP function) (SLEEP signal, Pr. 554, Pr. 575 to Pr. 577 )
The drive unit stops operation if the rotation speed after PID operation 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. (In this condition, setting Pr. 554
PID signal operation selection = "0 to 3" coasts the motor (output shutoff) to a stop at SLEEP operation start, and setting "10
to 13" decelerates the motor at SLEEP operation start according to the set deceleration time (Pr. 8 setting, etc.).) This
function can reduce energy consumption in the low-efficiency, low-speed range.
When the deviation (= set point - 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
drive unit 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 or Pr. 192 (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 drive unit 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)
Drive unit coasts to a stop at the
start of SLEEP operation
Only signal output
Only signal output
1 Signal output + stop by fault (E.PID)
2 Only signal output
Signal output + stop by fault
(E.PID)
3 Signal output + stop by fault (E.PID)
10
Drive unit decelerates to a stop
at the start of SLEEP operation
Only signal output
Only signal output
11 Signal output + stop by fault (E.PID)
12 Only signal output
Signal output + stop by fault
(E.PID)
13 Signal output + stop by fault (E.PID)
Rotation speed
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 = "20")
Deviation
Rotation speed
Deviation
When
Pr. 554 = "10 to 13", reverse action (Pr. 128 = "20")
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*
