1.
2.
3.
4.
5.
6.
1.
a.
b.
c.
2.
3.
4.
5.
Table 403: Range:
Min: 0 s
Max: 3600 s
Default value: 0 s
4.16.4.1 Running Sleep Mode in Open Loop
Procedure
The motor speed is less than the speed set in
parameter 22-47 Sleep Speed [Hz]
. The motor runs longer than the time dura-
tion set in
parameter 22-40 Minimum Run Time
. The sleep condition lasts longer than the time set in
parameter 22-48 Sleep
Delay Time
.
The drive ramps the motor speed down to
parameter 1-82 Min Speed for Function at Stop [Hz]
.
The drive activates
parameter 1-80 Function at Stop
. The drive is now in sleep mode.
The drive compares the speed setpoint with
parameter 22-43 Wake-Up Speed [Hz]
to detect a wake-up situation.
The speed setpoint is greater than
parameter 22-43 Wake-Up Speed [Hz]
. The sleep condition has lasted longer than the time
set in
parameter 22-41 Minimum Sleep Time
. The wakeup condition lasts longer than the time set in
parameter 22-49 Wake-
Up Delay Time
. The drive is now out of sleep mode.
Go back to speed open-loop control (ramp motor speed up to the speed setpoint).
4.16.4.2 Running Sleep Mode in Closed Loop
Procedure
The drive goes into boost status if the following conditions are met.
If
parameter 22-02 Sleepmode CL Control Mode
is set to
[0] Normal
:
The motor speed is less than the value in
parameter 22-47 Sleep Speed [Hz]
.
The feedback is above the reference.
The motor runs longer than the time in
parameter 22-40 Minimum Run Time
.
The sleep condition lasts longer than the time in
parameter 22-48 Sleep Delay Time
.
If
parameter 22-02 Sleepmode CL Control Mode
is set to
[1] Simplified
:
The motor speed is less than the value in
parameter 22-47 Sleep Speed [Hz]
.
The motor runs longer than the time in
parameter 22-40 Minimum Run Time
.
The sleep condition lasts longer than the time in
parameter 22-48 Sleep Delay Time
.
If
parameter 22-45 Setpoint Boost
is not set, the drive goes into sleep mode.
After the time in
parameter 22-46 Maximum Boost Time
has passed, the drive ramps down the motor speed to the speed in
parameter 1-82 Min Speed for Function at Stop [Hz]
.
The drive activates
parameter 1-80 Function at Stop
. The drive is now in sleep mode.
The drive is out of sleep mode when the error between the reference and the feedback is greater than
parameter 22-44
Wake-Up Ref./FB Diff
, and the sleep time is longer than the time in
parameter 22-41 Minimum Sleep Time
, and the wake-up
condition lasts longer than the time set in
parameter 22-48 Sleep Delay Time
.
The drive goes back to closed-loop control.
4.16.5 22-5* End of Curve
End of Curve
The end-of-curve condition occurs when a pump is yielding a large volume to ensure the set pressure. This situation can occur if
there is a leakage in the distribution pipe system after the pump which causes the pump to operate at the end of the pump charac-
teristic. If the feedback is below the setpoint for the required pressure for a set time (
parameter 22-51 End of Curve Delay
), and the
pump runs with maximum speed set in
parameter 4-14 Motor Speed High Limit [Hz]
, the function selected in
parameter 22-50 End of
Curve Function
takes place.
It is possible to get a signal on 1 of the digital outputs by selecting
[192] End of curve
in
parameter group 5-3* Digital Outputs
and/or
parameter group 5-4* Relays
. The signal is present when end-of-curve condition occurs and the selection in
parameter 22-50 End of
Curve Function
is different from
[0] Off
.
AU363928304090en-000101 / 130R0982
172 | Danfoss A/S © 2021.07
Parameters
VLT® Flow Drive FC 111
Programming Guide
