Application Examples; Hvac Application Examples; Star/Delta Starter Or Soft-Starter Not Required; Start/Stop - Danfoss VLT DriveMotor FCM 106 Design Manual

Application Examples

4 Application Examples

4.1 HVAC Application Examples

4.1.1 Star/Delta Starter or Soft-starter not
Required
When larger motors are started, it is necessary in many
countries to use equipment that limits the start-up current.
In more traditional systems, a star/delta starter or soft-
starter is widely used. Such motor starters are not required
if a frequency converter is used.
As illustrated in Illustration 4.1, a frequency converter does
not consume more than rated current.
800
700
600
500
400
300
200
100
1
0
0 12,5
Illustration 4.1 Start-up Current
1 VLT ®
DriveMotor FCM 106
2 Star/delta starter
3 Soft-starter
4 Start directly on mains
Table 4.1 Legend for Illustration 4.1
®
VLT DriveMotor FCP 106 and FCM 106 Design Guide
4
3
2
25 37,5 50Hz
Full load
& speed
MG03M102 - 08/2015

4.1.2 Start/Stop

Terminal 18 = start/stop 5-10 Terminal 18 Digital Input [8]
Start
Terminal 27 = No operation 5-12 Terminal 27 Digital Input
[0] No operation (Default coast inverse)
5-10 Terminal 18 Digital Input = Start (default)
5-12 Terminal 27 Digital Input = Coast inverse
(default)
12 13 18 19 27
1
2
3
Illustration 4.2 Start/Stop and Running Speed
1 Start/Stop
2 Speed
3 Start/Stop [18]
Table 4.2 Legend for Illustration 4.2
29 32 33 20
35
4 4