Fault trigger
Autoreset
Trial time
Restart 1
Restart 2
Fault active
Warning
Autoreset function: (Trials=2)
Trial time
Par. ID718
Wait
time
Par. ID717
Wait
time
Par. ID717
Wait
time
Par. ID717
e
3
0
b
h
0
6
8
.1
0
Illustration 79: Example of Automatic Restarts with Two Restarts
Parameters
ID 720
to
ID 725
determine the maximum number of automatic restarts during the trial time set by parameter
ID 718
. The
time count starts from the first auto reset. If the number of faults occurring during the trial time exceeds the values of parameters
ID
720
to
ID 725
, the fault state becomes active. Otherwise the fault is cleared after the trial time has elapsed and the next fault start the
trial time count again.
If a single fault remains during the trial time, a fault state is true.
10.351 (ID 719) Restart Function
Location in the menu:
P2.8.3
(Standard Application, Local/Remote Control Application, Multi-step Speed Control Application, PID
Control Application, Multi-purpose Control Application, Pump and Fan Control Application
Use this parameter to select the start mode for the Automatic reset function.
10.352 (ID 720) Automatic Restart: Number of Retries after Undervoltage Fault Trip
Location in the menu:
P2.8.4
(Standard Application, Local/Remote Control Application, Multi-step Speed Control Application, PID
Control Application, Multi-purpose Control Application, Pump and Fan Control Application)
Use this parameter to set how many automatic restarts the AC drive can make during the set trial time after an undervoltage fault.
Selection num-
ber
Selection name
Description
0
No automatic restart
-
>0
Number of automatic restarts after undervolt-
age fault
The fault is reset and the drive is started automatically after
the DC-link voltage has returned to the normal level.
10.353 (ID 721) Automatic Restart: Number of Retries after Overvoltage Fault Trip
Location in the menu:
P2.8.5
(Standard Application, Local/Remote Control Application, Multi-step Speed Control Application, PID
Control Application, Multi-purpose Control Application, Pump and Fan Control Application)
Use this parameter to set how many automatic restarts the AC drive can make during the set trial time after an overvoltage fault.
AB296635287482en-000301 / DPD00903
258 | Danfoss A/S © 2023.02
Parameter Descriptions
VACON® NX All-in-One
Application Guide
Summary of Contents for VACON NX
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