gefran VDI100 Series User Manual

Figure4.4.83:(a)PIDcontrolbockdiagram
PID
Target
Value
Feedback
Value
+
-
PID=OFF
PID=ON
f
Soft Start
Output
Frequency
( Fout )
PID
Sleep/Wake- up
function
(Fref)
Freq Reference
10-29= 0
10-29=1 or 2
t
Figure4.4.83:(b)TimingdiagramPIDsleep/wakeup
Output Frequency (Fout)
Frequency Reference
(Fref)
t
wake up delay time
(10-20)
sleep delay time
(10-18)
Fmin
(01-08)
Sleep
Frequency
(10-17)
Wake- up
Frequency
(10-19)
Output
Frequency
Figure4.4.83:(c)TimingdiagramofPIDsleepcompensationfrequency/wakeup
Output Frequency (Fout)
Frequency Reference
(Fref)
t
wake up delay time
(10-20)
sleep delay time
(10-18)
Fmin
(01-08)
Sleep
Frequency
(10-17)
Wake- up
Frequency
(10-19)
Output
Frequency
Notes:
10-40=0,refertoFigure4.4.83(b)
The PID sleep timer is enabled when the output frequency (Fout) falls below the PID sleep frequency (10-17).
When the sleep timer reaches the set PID sleep delay time (10-18) the inverter will decelerate to a stop and
enter the sleep mode.
10-40=1,refertoFigure4.4.83(c)
When output frequency (Fout) is lower than PID sleep frequency set by 10-17, Timer of PID sleep mode will run
and the output frequency changes with the reference frequency (Fref) until it reaches the minimum output fre-
quency (Fmin) set by 01-08. When the PID sleep delay time (10-18) is completed, the motor will run gradually
to the PID sleep frequency set by 10-17.
Note: It should be used in the situation of being required the constant frequency.
While sleep mode is active and the motor has stopped, the internal PID control is still in operating. When the
reference frequency increases and exceeds the wakeup frequency parameter 10-19 for the time specied in
the wakeup delay time parameter 10-20, the inverter will restart and the output frequency will ramp up to the
reference frequency.
Example:
- When wakeup frequency< sleep frequency, inverter starts by the sleep frequency and sleeps depending on
sleep frequency.
- When wakeup frequency> sleep frequency, inverter starts by the wakeup frequency and sleeps depending on
sleep frequency.
VDI100 • Instruction manual 221

gefran VDI100 Series Specifications

General

Brand	gefran
Model	VDI100 Series
Category	Inverter
Language	English