Parameters: 22-** Application Functions; Sleep Mode - Danfoss VLT AutomationDrive FC 360 Programming Manual

Parameter Descriptions
4.19 Parameters: 22-** Application
Functions

4.19.1 22-4* Sleep Mode

The sequence when running sleep mode in open loop:
1. The motor speed is less than
parameter 22-47 Sleep Speed [Hz] and the motor
4 4
has been running longer than
parameter 22-40 Minimum Run Time.
2. FC 360 ramps the motor speed down to
parameter 1-82 Min Speed for Function at Stop [Hz].
3. FC 360 activates 1-80 Function at Stop. The
frequency converter is now in sleep mode.
4. FC 360 compares the speed setpoint with
parameter 22-43 Wake-Up Speed [Hz] to detect
wake-up situation.
5. The speed setpoint is greater than
parameter 22-43 Wake-Up Speed [Hz] and the
sleep condition has last for more than
parameter 22-41 Minimum Sleep Time. The
frequency converter is now out of sleep mode.
6. Go back to speed open loop control (ramp motor
speed up to the speed setpoint).
The sequence when running sleep mode in closed loop:
1. If 20-81 PI Normal/ Inverse Control = [0] Normal.
When error between reference and feedback is
greater than 22-44 Wake-Up Ref./FB Diff, the
frequency converter enters Boost status. If
22-45 Setpoint Boost is not set, the frequency
converter enters sleep mode.
2. After 22-46 Maximum Boost Time, the frequency
converter ramps the motor speed down to
parameter 1-82 Min Speed for Function at Stop [Hz].
3. The frequency converter activates 1-80 Function at
Stop. The frequency converter is now in sleep
mode.
4. When error between reference and feedback is
greater than 22-44 Wake-Up Ref./FB Diff, and the
condition last more than
parameter 22-41 Minimum Sleep Time, the
frequency converter is out of sleep mode.
5. The frequency converter reverts to close loop
control.
NOTICE
Sleep mode is not active when local reference is active
(set speed manually with navigation keys on the LCP).
Does not work in Hand-mode. Auto set-up in open loop
must be carried out before setting input/output in closed
loop.
104
Programming Guide
22-40 Minimum Run Time
Range:
10 s
22-41 Minimum Sleep Time
Range:
10 s
22-43 Wake-Up Speed [Hz]
Range:
10
22-44 Wake-Up Ref./FB Diff
Range:
10 %
22-45 Setpoint Boost
Range:
0
%
22-46 Maximum Boost Time
Range:
60
s
Danfoss A/S © Rev. 2014-03-31 All rights reserved.
Function:
[0 - 600 s] Set the desired minimum running time for
*
the motor after a start command (digital
input or Bus) before entering sleep mode.
Function:
[0 - 600 s] Set the desired minimum time for staying in
*
sleep mode. This overrides any wake-up
conditions.
Function:
[ 0 - 400.0 ] Only to be used if 1-00 Configuration Mode, is
*
set for open loop and speed reference is
applied by an external controller. Set the
reference speed at which the sleep mode
should be deactivated
Function:
[0 - Only to be used if parameter 1-00 Configuration
*
100 %] Mode is set for closed loop and the integrated
PI controller is used for controlling the pressure.
Set the pressure drop allowed in percentage of
setpoint for the pressure (P
the sleep mode.
Function:
[-100 Only to be used if parameter 1-00 Configuration
- 100 Mode, is set for closed loop and the integrated PI
*
%] controller is used. In systems with e.g. constant
pressure control, it is advantageous to increase
the system pressure before the motor is stopped.
This extends the time in which the motor is
stopped and help to avoid frequent start/stop.
Set the desired overpressure/temperature in
percentage of setpoint for the pressure (P
temperature before entering the sleep mode.
If setting for 5%, the boost pressure is be
P *1.05. The negative values can be used for e.g.
set
cooling tower control where a negative change is
needed.
Function:
[0 - Only to be used if parameter 1-00 Configuration
600 s] Mode is set for closed loop and the integrated PI
*
controller is used for controlling the pressure.
Set the maximum time for which boost mode is
allowed. If the set time is exceeded, sleep mode is
entered, not waiting for the set boost pressure to
be reached.
) before cancelling
set
)/
set
MG06C402