Danfoss VLT Programming Guide

14-12 Function at Mains Imbalance
Option: Function:
Operation under severe main imbalance conditions reduces the lifetime of the motor. Conditions are
considered severe if the motor is operated continuously near nominal load (e.g. a pump or fan
running near full speed).
When a severe mains imbalance is detected:
[0] * Trip Select
Trip [0] to trip the frequency converter.
[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 frequency converter.
3.14.4 14-2* Trip Reset
Parameters for configuring auto reset handling, special trip handling and control card self test or initialisation.
14-20 Reset Mode
Option: Function:
Select the reset function after tripping. Once reset, the frequency converter 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.
NB!
The motor may start without warning. If the specified number of AUTOMATIC RESETs is reached within 10 minutes, the frequency
converter 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.
NB!
Automatic reset will also be active for resetting safe stop function.
VLT
®
HVAC Drive Programming Guide 3 Parameter Description
MG.11.C9.02 - VLT
®
is a registered Danfoss trademark 149
3

Danfoss VLT Specifications

General

Frequency	50/60 Hz
Enclosure	IP20, IP21, IP55, IP66
Series	VLT
Control Technique	Flux Vector Control
Output Voltage	0-Vinput
Control Method	Fieldbus
Communication Interface	PROFIBUS, CANopen
Protection Features	Overload, Overvoltage, Undervoltage, Short Circuit, Ground Fault
Cooling Method	Liquid Cooled
Storage Temperature	-25°C to +70°C
Relative Humidity	5-95% non-condensing
Altitude	Up to 1000m (3280ft) without derating, up to 4000m (13120ft) with derating
Operating Temperature	-10°C to +50°C (14°F to 122°F)