Danfoss VLT HVAC Series Programming Manual page 161

VLT ® HVAC Drive Programming Guide
14-12 Function at Mains Imbalance
Option:
[0] * Trip
[1] Warning
[2] Disabled
[3] Derate
3.14.4 14-2* Trip Reset
Parameters for configuring auto reset handling, special trip handling and control card self test or initialization.
14-20 Reset Mode
Option:
[0] * Manual reset
[1] Automatic reset x 1
[2] Automatic reset x 2
[3] Automatic reset x 3
[4] Automatic reset x 4
[5] Automatic reset x 5
[6] Automatic reset x 6
[7] Automatic reset x 7
[8] Automatic reset x 8
[9] Automatic reset x 9
[10] Automatic reset x 10
[11] Automatic reset x 15
[12] Automatic reset x 20
[13] Infinite auto reset
NOTE!
The motor may start without warning. If the specified number of AUTOMATIC RESETs is reached within 10 minutes, the adjustable
frequency drive enters Manual reset [0] mode. After the Manual reset is performed, the setting of par.14-20
original selection. If the number of automatic resets is not reached within 10 minutes, or when a Manual reset is performed, the internal
AUTOMATIC RESET counter returns to zero.
NOTE!
Automatic reset will also be active for resetting safe stop function in firmware version < 4.3x.
Function:
Operating under severe line imbalance conditions reduces the lifetime of the motor. Conditions are
considered severe if the motor operates continuously near nominal load (such as when a pump or
fan runs near full speed).
When a severe line imbalance is detected:
Trip
Select [0] to trip the adjustable frequency drive.
Select Warning [1] to issue a warning.
select Disabled [2] for no action.
Derate
Select [3] for derating the adjustable frequency drive.
Function:
Select the reset function after tripping. Once reset, the adjustable frequency drive can be restarted.
Select Manual reset [0] to perform a reset via [RESET] or via the digital inputs.
Automatic reset x 1...x20
Select [1]-[12] to perform between one and twenty automatic resets after
tripping.
Select Infinite Automatic Reset [13] for continuous resetting after tripping.
MG.11.C6.22 - VLT ® is a registered Danfoss trademark
3 Parameter Description
3
Reset Mode
reverts to the
3-137