When low power or low speed is detected the motor is stopped, but the reference signal (f
ref
) from the external
controller is still monitored and because 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
wake
, the motor restarts,.
Configuration possibilities, overview:
Internal PI Controller
(par.1-00
Configuration Mode: Closed-loop)
External PI controller or manual control
(par.1-00
Configuration Mode: Open-loop)
Sleep mode Wake up Sleep mode Wake up
No Flow detection (pumps only) Yes Yes (except manual set-
ting of speed)
Low speed detection Yes Yes
External signal Yes Yes
Pressure/Temperature (trans-
mitter connected)
Yes No
Output frequency No Yes
NOTE
Sleep mode will not be active when Local Reference is active (set speed manually by means of arrow buttons on the
keypad). See par.3-13
Reference Site.
Does not work in hand mode. Auto set-up in open-loop must be carried out before settin
g input/output in closed-loop.
22-40 Minimum Run Time
Range: Function:
10 s* [0 - 600 s] Set the desired minimum running time for the motor after a start com-
mand (digital input or bus) before entering sleep mode.
22-41 Minimum Sleep Time
Range: Function:
10 s* [0 - 600 s] Set the desired minimum time for staying in sleep mode. This will over-
ride any wake-up conditions.
22-42 Wake-up Speed [RPM]
Range: Function:
Applica-
tion de-
pend-
ent*
[Application dependant]
TR200 Programming Guide 4-189
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