Danfoss VLT FC 100 Series Programming Manual page 180

3. Parameter Description
3
When low power or low speed is detected the motor is stopped, but the reference signal (f
of the low pressure created, the controller will increase the reference signal to gain pressure. When the reference signal has reached a set value f
the motor restarts.
The speed is set manually by an external reference signal (Remote Reference). The settings (par. 22-3*) for tuning of the No Flow function must be set
to default.
Configuration possibilities, overview:
No Flow detection (pumps only)
Low speed detection
External signal
Pressure/Temperature (transmit-
ter connected)
Output frequency
NB!
Sleep Mode will not be active when Local Reference is active (set speed manually by means of arrow buttons on the Local Control
Panel). See Par. 3-13,
Does not work in Hand-mode. Auto set-up in open loop must be carried out before setting input/output in closed loop.
22-40 Minimum Run Time
Range:
*
10 s [0 - 600 s]
22-41 Minimum Sleep Time
Range:
*
10 s [0 - 600 s]
180
Internal PI Controller
(Par. 1-00: Closed loop)
Sleep mode Wake up
Yes
Yes
Yes
Yes
No
Reference Site
.
Function:
Set the desired minimum running time for the motor after a Start command (digital input or Bus) before entering
Sleep Mode.
Function:
Set the desired minimum time for staying in Sleep Mode. This will override any wake up conditions.
MG.11.C5.02 - VLT ®
®
VLT HVAC Drive Programming Guide
) from the external controller is still monitored and because
ref
External PI Controller or manual control
(Par. 1-00: Open loop)
Sleep mode
Yes (except manual setting
of speed)
Yes
Yes
is a registered Danfoss trademark
wake
Wake up
No
Yes