Vacon 100 flow Applications Manual page 351

PARAMETER DESCRIPTIONS
The Jockey pump function controls a jockey pump with a digital output signal. You can use a
jockey pump if a PID controller is used to control the main pump. The function has 3
operation modes.
Selection
Selection name
number
0
1
2 PID sleep (level)
JockeyStopLevel
Jockey Start Level
PID Controller
Wake Up Level
Output Freq
PID Sleep
Jockey Pump Control
(Selected value = PID Sleep)
Jockey Pump Control
(Selected value =
PID Sleep (Level))
Fig. 106: The Jockey pump function
LOCAL CONTACTS: HTTP://DRIVES.DANFOSS.COM/DANFOSS-DRIVES/LOCAL-CONTACTS/
Not used
The jockey pump starts when the PID Sleep of the main
PID sleep pump activates. The jockey pump stops when the main pump
wakes up from the sleep mode.
The jockey pump starts when the PID Sleep activates, and
the PID feedback signal is less than the level set by parame-
ter P3.21.2.2.
The jockey pump stops when the PID feedback signal is more
than the level set in parameter P3.21.2.3 or the main pump
wakes up from the sleep mode.
PID Feedback
PID Sleep
Delay
VACON · 351
Description
10