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vacon • 63
P9.9
P9.10
Definition of minimum load at nominal and zero speed zero. Fault condition delay. This time
can be set between 1.0 and 300.0 s.
This is the maximum time allowed for an underload state to exist. An internal up/down counter
counts the accumulated underload time. If the underload counter value goes above this limit
the protection will cause a trip according to parameter P9.7). If the drive is stopped the under-
load counter is reset to zero.
3
Torque
Par.
P9.8
Par.
P9.9
5 Hz
Figure 18. Underload characteristic settings.
U
NDERLOAD LOAD AT ZERO FREQ
U
NDERLOAD TIME
Underload time counter
Par. P9.10
Underload•
No underl.
Figure 19. Underload time counter.
Underload area
Fieldweakening
point
Trip area
Trip/warning
par. P9.7
Parameter description
f
Time
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