Danfoss VLT DriveMotor FCM 106, Design Manual, Page: 37 / 66

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.
Full load
% F
ull load cur
ren
t
& speed
500
100
0
0 12,5 25 37,5 50Hz
200
300
400
600
700
800
4
3
2
1
175HA227.10
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
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)
195NA446.10
18 13 12 29 27 19 32 33 20
+24V P 5-10 [8] P 5-12 [0]
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
Application Examples
VLT
®
DriveMotor FCP 106 and FCM 106 Design Guide
MG03M102 - 08/2015 35
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