Danfoss VLT FC 102 Programming Manual page 114

Programming Guide | VLT® HVAC Drive FC 102
1-91 Motor External Fan
Default value: [0] No
Setup: All setups
Data type: Uint8
Option Name
[0]* No
[1] Yes
1-93 Thermistor Resource
Default value:
[0] None
Setup: All setups
Data type: Uint8
This parameter cannot be adjusted while the motor is running.
Set digital input to [0] PNP - Active at 24 V in parameter 5-00 Digital I/O Mode.
When using VLT® PTC Thermistor Card MCB 112 always always select [0] None.
114 | © 2024.10
Parameter type:
Conversion index:
Change during operation:
Description
No external fan is required, that is the motor is derated at low
speed.
Applies an external motor fan (external ventilation), so no
derating of the motor is required at low speed. The upper curve
in the following drawing (f
current is lower than nominal motor current (see parameter 1-24
Motor Current). If the motor current exceeds nominal current, the
operation time still decreases as if no fan was installed.
t [s]
2000
1000
600
500
400
300
200
100
60
50
40
30
20
10
1.0 1.2 1.4
Figure 36: Example with External Motor Fan Applied
Parameter type:
Conversion index:
Change during operation:
NOTICE
NOTICE
NOTICE
Parameter Descriptions
Option
–
True
= 1 x f ) is followed if the motor
out M,N
f = 2 x f
OUT M,N
f = 1 x f
M,N
OUT
f = 0.2 x f
OUT M,N
I
M
I (parameter 1-24)
1.6 1.8 2.0
M,N
Option
–
True
AU430028034214en-001901 / 130R0310
(parameter 1-23)