Dc Hold/Preheat Current; Brake Function; Ac Brake Max. Current - Danfoss VLT HVACDrive Instruction Manual

VLT ® HVAC Drive Instruction Manual
[0] * None
[1] Analog input 53
[2] Analog input 54
[3] Digital input 18
[4] Digital input 19
[5] Digital input 32
[6] Digital input 33
NOTE!
This parameter cannot be adjusted while the motor is running.
NOTE!
Digital input should be set to [0]

2-00 DC Hold/Preheat Current

Range:
50 %* [Application dependant]
NOTE!
The maximum value depends on the rated motor current.
NOTE!
Avoid 100% current for too long. It may damage the motor.

2-10 Brake Function

Option:
[0] * Off
[1] Resistor brake
[2] AC brake

2-16 AC Brake Max. Current

Range:
100.0 %* [Application dependant]
PNP - Active at 24V
in parameter 5-00.
Function:
Enter a value for holding current as a percentage of the rated motor current I
Motor Current
par. 1-24 . 100% DC holding current corresponds to I
This parameter holds the motor (holding torque) or pre-heats the motor.
This parameter is active if [1] DC hold/Preheat is selected in par. 1-80
Function:
No brake resistor installed.
Brake resistor incorporated in the system, for dissipation of surplus braking energy as heat. Con-
necting a brake resistor allows a higher DC link voltage during braking (generating operation). The
resistor brake function is only active in adjustable frequency drives with an integral dynamic brake.
AC Brake will only work in Compressor Torque mode in par. 1-03
Function:
Enter the maximum permissible current when using AC brake to avoid overheating motor windings.
The AC brake function is available in flux mode only (FC 302 only).
MG.11.AB.22 - VLT ® is a registered Danfoss trademark
7 How to Program the Adjustable Frequency
.
M,N
Function at Stop
Torque Characteristics
Drive
7
set in
M,N
.
.
7-19