Danfoss VLT HVAC Series User Manual

14-12 Function at Mains Imbalance
Option: 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:
[0] * Trip Select
Trip [0] to trip the adjustable frequency drive.
[1] Warning Select
Warning [1] to issue a warning.
[2] Disabled select
Disabled [2] for no action.
[3] Derate Select
Derate [3] for derating the adjustable frequency drive.
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: Function:
Select the reset function after tripping. Once reset, the adjustable frequency drive can be restarted.
[0] * Manual reset Select
Manual reset [0] to perform a reset via [RESET] or via the digital inputs.
[1] Automatic reset x 1 Select
Automatic reset x 1…x20 [1]-[12] to perform between one and twenty automatic resets after
tripping.
[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 Select
Infinite Automatic Reset [13] for continuous resetting after tripping.
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
Reset Mode reverts to the
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.
VLT
®
HVAC Drive Programming Guide 3 Parameter Description
MG.11.C6.22 - VLT
®
is a registered Danfoss trademark 3-137
3

Danfoss VLT HVAC Series Specifications

General

Protection Features	Overcurrent, Overvoltage, Undervoltage, Overtemperature, Short circuit
Communication Interfaces	Profibus, Ethernet
Cooling Method	Forced convection
Ambient Temperature	-10°C to +40°C
Enclosure Rating	IP20, IP21, IP55
Output Voltage	0 - 100% of supply voltage