Danfoss VLT HVAC Drive FC 102 Operating Instructions Manual page 86

How to Programme
1-93 Thermistor Source
Option:
6 6
[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
2-00 DC Hold/Preheat Current
Range:
50 [ 0 -
% 160 %]
*
NOTICE
Parameter 2-00 DC Hold/Preheat Current has no effect
when 1-10 Motor Construction=[1] PM, non-salient SPM.
84
Operating Instructions
Function:
NOTICE
This parameter cannot be adjusted
while the motor is running.
NOTICE
Set digital input to [0] PNP - Active at
24 V in 5-00 Digital I/O Mode.
Select the input to which the thermistor (PTC
sensor) should be connected. An analog
input option [1] Analog Input 53 or [2] Analog
Input 54 cannot be selected if the analog
input is already in use as a reference source
(selected in parameter 3-15 Reference 1
Source, parameter 3-16 Reference 2 Source or
3-17 Reference 3 Source).
When using VLT PTC thermistor card MCB
112, [0] None must always be selected.
Function:
Enter a value for holding current as a percentage
of the rated motor current I set in
M,N
parameter 1-24 Motor Current. 100% DC hold
current corresponds to I .
M,N
This parameter holds the motor (holding torque)
or preheats the motor.
This parameter is active if [1] DC hold/Motor
Preheat is selected in parameter 1-80 Function at
Stop.
Danfoss A/S © 08/2014 All rights reserved.
NOTICE
The maximum value depends on the rated motor
current.
Avoid 100% current for too long. It may damage the
motor.
2-10 Brake Function
Option: Function:
Available selections depend on 1-10 Motor
Construction:
[0] Asynchron:
[0] Off
[1] Resistor brake
[2] AC brake
[1] PM non-salient:
[0] Off
[1] Resistor brake
[0] Off No brake resistor installed.
[1] Resistor Brake resistor incorporated in the system, for
brake dissipation of surplus brake energy as heat.
Connecting a brake resistor allows a higher DC-
link voltage during braking (generating operation).
The resistor brake function is only active in
frequency converters with an integral dynamic
brake.
[2] AC brake AC brake only works in compressor torque mode
in parameter 1-03 Torque Characteristics.
2-17 Over-voltage Control
Option: Function:
NOTICE
Parameter 2-17 Over-voltage Control has no
effect when 1-10 Motor Construction=[1]
PM, non-salient SPM.
NOTICE
The ramp time is automatically adjusted to
avoid tripping of the frequency converter.
[0] Disabled No OVC required.
[2] Enabled Activates OVC.
*
MG11F502