Danfoss VLT AutomationDrive FC 302 Programming Guide

Option
Name
Description
[0]*
Disabled
No OVC required.
[1]
Enabled (not at stop)
Activates OVC except when using a stop signal to stop the drive.
[2]
Enabled
Activates OVC.
Parameter 2-18 Brake Check Condition
Table 166: Parameter 2-18 Brake Check Condition
2-18 Brake Check Condition
Default value: [0] At power up
Parameter type: Option
Setup: All setups
Conversion index: –
Data type: Uint8
Change during operation: True
Option
Name
Description
[0]*
At power up
Brake check at power-up.
[1]
After coast situations
Brake check is performed after coast situations.
Parameter 2-19 Over-voltage Gain
Table 167: Parameter 2-19 Over-voltage Gain
2-19 Over-voltage Gain
Default value: 100%
Parameter type: Range, 10 - 200%
Setup: All setups
Conversion index: 0
Data type: Uint16
Change during operation: True
Select overvoltage gain.
5.3.3 2-2* Mechanical Brake
Parameters for controlling operation of an electro-magnetic (mechanical) brake, typically required in hoisting applications.
To control a mechanical braking, a relay output (relay 01 or relay 02) or a programmed digital output (terminal 27 or 29) is required.
Normally, this output must be closed during periods when the drive is unable to hold the motor, for example due to an excessive
load.
Select [32] Mechanical Brake Control for applications with an electro-magnetic brake in parameter 5-40 Function Relay, parameter 5-30
Terminal 27 Digital Output, or parameter 5-31 Terminal 29 Digital Output. When selecting [32] Mechanical brake control, the mechani-
cal braking is closed from start-up until the output current is above the level selected in parameter 2-20 Release Brake Current. During
stop, the mechanical braking activates when the speed drops below the level specified in parameter 2-21 Activate Brake Speed [RPM].
If the drive enters an alarm condition, an overcurrent, or overvoltage situation, the mechanical braking immediately cuts in. This is
also the case during Safe Torque Off.
N O T I C E
Protection mode and trip delay features (parameter 14-25 Trip Delay at Torque Limit and parameter 14-26 Trip Delay at Inverter
Fault) may delay the activation of the mechanical braking in an alarm condition. These features must be disabled in hoisting ap-
plications.
AU275636650261en-000101 / 130R0334118 | Danfoss A/S © 2022.12
Parameter Descriptions
VLT AutomationDrive FC 301/302
Programming Guide

Danfoss VLT AutomationDrive FC 302 Specifications

General

Brand	Danfoss
Model	VLT AutomationDrive FC 302
Category	DC Drives
Language	English