Danfoss VLT AutomationDrive FC 300 Instruction Manual

1-03 Torque Characteristics
Option: Function:
Select the torque characteristic required.
VT and AEO are both energy saving operations.
[0] * Constant torque Motor shaft output provides constant torque under variable speed control.
[1] Variable torque Motor shaft output provides variable torque under variable speed control. Set the variable torque
level in par. 14-40
VT Level .
[2] Auto Energy Optim. Automatically optimizes energy consumption by minimizing magnetization and frequency via
par. 14-41
AEO Minimum Magnetization and par. 14-42 Minimum AEO Frequency .
[5] Constant Power The function provide a constant power in field weakening area. Follows the formula:
P
constant
=
Torque x RPM
9550
This selection maybe unavailable depending on drive configuration.
This parameter cannot be adjusted while the motor is running.
1-04 Overload Mode
Option: Function:
[0] * High torque Allows up to 160% over torque.
[1] Normal torque For an oversized motor - allows up to 110% over torque.
This parameter cannot be adjusted while the motor is running.
1-90 Motor Thermal Protection
Option: Function:
The adjustable frequency drive determines the motor temperature for motor protection in three
different ways:
• Via a thermistor sensor connected to one of the analog or digital inputs (par. 1-93
Ther-
mistor Source
). See section PTC Thermistor Connection .
• Via a KTY sensor connected to an analog input (par. 1-96
KTY Thermistor Resource ). See
section
KTY Sensor Connection .
• Via calculation (ETR = Electronic Terminal Relay) of the thermal load, based on the actual
load and time. The calculated thermal load is compared with the rated motor current
I
M,N
and the rated motor frequency f
M,N
. The calculations estimate the need for a lower
load at lower speed due to less cooling from the fan incorporated in the motor.
[0] * No protection Continuously overloaded motor, when no warning or trip of the adjustable frequency drive is re-
quired.
[1] Thermistor warning Activates a warning when the connected thermistor or KTY sensor in the motor reacts in the event
of motor overtemperature.
[2] Thermistor trip Stops (trips) adjustable frequency drive when connected thermistor or KTY sensor in the motor
reacts in the event of motor overtemperature.
The thermistor cut-out value must be > 3 k.
Integrate a thermistor (PTC sensor) in the motor for winding protection.
[3] ETR warning 1 Please see detailed description below
[4] ETR trip 1
[5] ETR warning 2
4 How to Program
VLT
®
AutomationDrive FC 300 Instruction
Manual
4-8 MG.33.AG.22 - VLT
®
is a registered Danfoss trademark
4

Danfoss VLT AutomationDrive FC 300 Specifications

General

Brand	Danfoss
Model	VLT AutomationDrive FC 300
Category	DC Drives
Language	English