Device functions
ECOFAST Motor Starters
GWA 4NEB 950 5221-12 DS 02
6-5
Deutsc
h
En
glish
6.4
Electronic/mechanical switching technology
Electronic switching technology
The motor starter controls the motor in a 2-phase system with power semi-
conductors.
(Only applicable to soft starters)
Mechanical switching technology
The motor starter controls the motor in a 3-phase system with contactors.
Contact block defective
If a contact block is defective (contactor welded / thyristor failure), the motor
starter cannot shut down the motor.
Note
If necessary, evaluate the message "Switching element defective" and shut
down the branch on the basis of this by means of an upstream contact
block.
Possible causes of faults
The "Switching technology" device function returns the "General fault" signal
in response to the following causes:
• Switching element defective (e.g. contactor contact welded, power semicon-
ductor failed)
• Switching element overload (e.g. semiconductor too hot, only applicable to
soft starters)
Summary of Contents for ecofast 3RK1702-2GB18-0AA1
Page 1: ...Motor Starter Handbuch Manual 04 2009 ecofast Totally Integrated Automation ...
Page 2: ......
Page 12: ...ECOFAST Motorstarter viii GWA 4NEB 950 5221 12 DS 02 ...
Page 40: ...Montage von Motorstartern ECOFAST Motorstarter 3 8 GWA 4NEB 950 5221 12 DS 02 ...
Page 58: ...Gerätefunktionen ECOFAST Motorstarter 6 6 GWA 4NEB 950 5221 12 DS 02 ...
Page 70: ...Bestellnummern ECOFAST Motorstarter C 4 GWA 4NEB 950 5221 12 DS 02 ...
Page 74: ...Korrekturblatt ECOFAST Motorstarter GWA 4NEB 950 5221 12 DS 01 ...
Page 84: ...ECOFAST Motor Starters viii GWA 4NEB 950 5221 12 DS 02 ...
Page 112: ...Installation of Motor Starters ECOFAST Motor Starters 3 8 GWA 4NEB 950 5221 12 DS 02 ...
Page 130: ...Device functions ECOFAST Motor Starters 6 6 GWA 4NEB 950 5221 12 DS 02 ...
Page 138: ...Technical data ECOFAST Motor Starters A 8 GWA 4NEB 950 5221 12 DS 02 ...
Page 146: ...ECOFAST Motor Starters GWA 4NEB 950 5221 12 DS 02 ...
Page 149: ......