70 • vacon description of parameters
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7
Par. ID711
NX12k64
Trip area
Time
Stall time counter
Stall
No stall
Trip/warning
par. ID709
711 Stall time
(2.6.15)
This time can be set between 1.0 and
120.0s.
This is the maximum time allowed for a
stall stage. The stall time is counted by an
internal up/down counter.
If the stall time counter value goes above
this limit the protection will cause a trip
(see ID709). See chapter 9.3.
Figure 26. Stall time count
712 Stall frequency limit
(2.6.16)
The frequency can be set between 1-f
max
(ID102).
For a stall state to occur, the output frequency must have remained below this limit. See
chapter 9.3.
717 Automatic restart: Wait time
(2.8.1)
Defines the time before the frequency converter tries to automatically restart the motor
after the fault has disappeared.
718 Automatic restart: Trial time
(2.8.2)
The Automatic restart function restarts the frequency converter when the faults selected
with parameters ID720 to ID725 have disappeared and the waiting time has elapsed.
Figure 27. Example of Automatic restarts with two restarts
NX12k67
Fault trigger
Motor stop signal
Motor start signal
Supervision
Wait time
Par.ID717
Restart 1 Restart 2
Trial time
Par. ID718
Fault active
RESET/
Fault reset
Autoreset function: (Trials = 2)
Wait time
Par.ID717
Wait time
Par.ID717
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